Some standard content:
ICS 77.180
J61
JB
Machinery Industry Standard of the People's Republic of China
JB10145-1999
Die casting machine
Safety requirements||tt ||Die castingmachineSafety requirements1999-10-08 Release
National Machinery Industry Bureau
Release
2000-03-01 Implementation
JB 10145--1999||tt| |Foreword
This standard is formulated in accordance with the provisions of GB/T16755-1997 "Rules for Drafting and Presentation of Mechanical Safety Standards". It belongs to Class C safety standards: it stipulates safety requirements for repellent casting machines. Since domestic Class A and Class B safety standards are being formulated one after another, all published Class A and Class B safety standards that can be cited have been cited in this standard, and there are no Class A and Class B that can be cited. Safety standards, this standard specifies specific safety requirements in terms. This standard has been implemented since March 1, 2000. This standard was proposed and centralized by the National Foundry Machinery Standardization Technical Committee. This standard was drafted by: Jinan Foundry and Forging Machinery Research Institute, Shanghai Die Casting Machine Factory, Ningbo Dongfang Die Casting Machine Tool Co., Ltd., Dongye Machinery Manufacturing Factory, Shanghai Lijin (Yida) Machinery Co., Ltd., Jiangsu Guannan Die Casting Machine Co., Ltd. The main drafters of this standard: Gao Tianzhen, Chen Yijiang, Zhu Fengnian, Han Jianxiong, Liu Xiangshang, Chen Jinlou Fantu
Machinery Industry Standards of the People's Republic of China
Die Casting Machinery
Safety Requirements
Die casting machineSafety requiremientsThis standard specifies the basic safety technical requirements that die casting machine designers, manufacturers and suppliers should follow. This standard applies to cold chamber die casting machines and hot chamber die casting machines (hereinafter referred to as die casting machines). 2 Reference standards
JB10145—1999
The provisions contained in the following standards constitute provisions of this standard by being quoted in this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB 5083—1999
GB/T 5226.1-1996
GB 12265.1-1997
GB 12265.3-1997
GB/T 14776——1993
GB/T15706.1—1995
GB/T15706.2—1995
GB/T 162511996
GB167541997
GB/T 16855.1—1997
GB/T16856--1997
JB/T 5365.21991
JB5545—1991
JB/T 6331.2-1992
JB/T7536—J994
JB /T9978—1999
3 definitions
General principles for safety and hygiene design of production equipment
T industrial machinery and electrical equipment Part 1: General technical conditions Mechanical safety Safe distance to prevent upper limbs from touching the danger zone Mechanical safety Minimum spacing to avoid extrusion of various parts of the human body Ergonomic workstation size design principles and numerical values ??Basic concepts and general design principles of mechanical safety Part 1: Basic terminology, methodology Basic concepts and general design principles of mechanical safety Part 2: Technical principles and Ergonomics and original testing of mechanical safety emergency stop design principles for standardizing the design of work systems
Safety components related to mechanical safety control systems Part 1: General principles of design Principles of mechanical safety risk assessment
Method for determination of cleanliness of foundry machinery Technical conditions for safety protection of casting machinery using microscopy method
Method for determination of noise of casting machinery Sound pressure level determination General terminology of mechanical safety
Terminology of casting machinery
Except in JB/T15706.1, GB/ In addition to the definitions given in T16856, JB/T7536 and JB/T9978 that apply to the standard, this standard also adopts the following definitions.
3.1 Die-casting type
A mold divided into two halves used on a die-casting machine as a casting. 3.2 Parting surface
The National Machinery Industry Bureau approved the implementation on 2000-03-01 on 1999-10-01
The die-casting mold is divided into two halves: moving and final sections. 3.3 Locking mechanism
JB10145-1999
In the die-casting machine, when the die-casting mold is closed, it is used to lock the die-casting mold and generate a locking force to prevent the die-casting mold from being separated during the injection and filling process. of institutions. The mechanism can be an independent mechanism or combined with a combined mechanism. 3.4 Protection device to prevent mis-closing
In the die-casting machine, when the die-casting mold is in a fully open state, it is a device used to prevent the movable seat plate from any accidental closing action before receiving the closing command.
3.5 Remaining material cake
The cylindrical metal cake formed by the remaining metal in the injection chamber after injection by the cold chamber die casting machine. 3.6 Narrow points
In the die-casting machine or auxiliary device, any other part other than the parting surface that may cause some part of the body to be squeezed. These parts may be between moving parts, or between moving parts and fixed parts, or between moving parts and die-cast workpieces. 4 Important hazardous items
The following important hazardous items are the results of risk assessment based on GB/T16856 for die-casting machines within the scope of application of this standard. 4.1 Mechanical hazards
4.1.1 During the operation of the die-casting machine, its moving parts may cause dangers such as pinching, shearing, collision, and entanglement to the human body. 4.1.2 Due to the shape of the die-casting machine parts, the sharp edges and corners may cause injuries or cuts to the human body. 4.1.3 During the use of die-casting machine parts, there may be dangers caused by loosening, loosening, falling or breaking, chipping, or being used out. 4.1.4 There may be dangers caused by parts in the die-casting machine that may move on their own under the influence of gravity or may cause unexpected movement due to control failure. 4.1.5 When working at height (repair or maintenance, etc.), there may be a risk of falling. There may be dangers of slipping and falling around the die-casting machine. Maintenance personnel may encounter dangers such as collision and pinching if the operating space is narrow or the operation is inconvenient. 4. 1. 6
Possible dangers caused by high-pressure fluids
4.1.6.1
4. 1. 6.2
The maximum pressure of hydraulic and pneumatic systems exceeds the neutral element of the system Hazards caused by the rated safe working pressure of the device. Possible explosion hazard from hydraulic accumulators. Danger caused by dismantling or repairing the energy converter without completely releasing the pressure. 4.1.6.3
Leakage in hydraulic or pneumatic systems may cause jet hazards and contaminate the ground, causing slips and other hazards. 4.1.6.4
4:1.6.5 Pressure loss or severe pressure drop may cause mechanism failure and cause danger. 4.1.6.6 Foreign matter (such as oxide scale, Burrs, moisture, etc.) may cause mechanism failure and personal injury.
4.2 Electrical hazards
4.2.1 Direct contact of personnel with exposed live parts, wires or components with insulation failure may cause dangers such as electric shock, fire, burns, panic and falls.
4.2.2 Danger caused by improper operation caused by failure of control components. 4.3 Thermal hazard
4.3.1 During the process of transporting molten metal from the self-heating furnace to the injection chamber of the cold chamber die casting machine, splash may occur, causing scalds and burn hazards. 4.3.2 After the casting machine is closed, due to insufficient locking force, accidental mold opening or other negligence, there may be a danger of molten metal ejecting 2
from the parting surface.
JB10145-1999
4.3.3 The danger that the operator may extend into the molten metal of the holding furnace due to accident or negligence. 4.3.4 The danger of liquid metal splashing around the nozzle of the die-casting machine. 4.4 Noise hazard
The die-casting machine makes excessive noise due to the following reasons, causing operators hearing loss, tinnitus, fatigue, mental depression and danger caused by disturbing auditory signals after long-term work:
A pneumatic system exhaust Gas:
Unbalanced operation of the motor and pump:
Improper installation of pipelines and weak fixation;
Other mechanical impacts.
4.5 Hazards arising from materials and substances
4.5.1 Hydraulic oil used in die-casting machines may cause combustion hazards. 4.5.2 The mold lubricant used in the die-casting machine may cause a burning hazard. 4.5.3. The smoke and mist produced by the mold lubricant used in the die-casting machine may cause inhalation hazards to the human body. 4.6 Other dangers
4.6.1 Possible dangers caused by ignoring ergonomics principles, such as error-prone operating directions, inappropriate lighting, excessive tension and fatigue, etc.
4.6.2 During hoisting and transportation, there is a danger of accidental tipping, movement or falling due to excessive weight, poor stability, improperly fixed parts, insufficient strength of the spreader, etc.
4.6.3 The devices and control systems in the die-casting machine have poor anti-electromagnetic interference performance, which may cause danger if the machine cannot operate normally. 4.6.4 When two or more operators operate the holding machine, dangers may arise due to uncoordinated operations or other accidents. 5 Safety requirements and/or measures
5.1 Basic requirements
5.1.1 The safety design of the die-casting machine must comply with the principles specified in GB/T15706.1, GB/T15706.2 and GB5083. 5.1.2 In addition to complying with the provisions of this standard, the safety protection of the die-casting machine must also comply with the relevant provisions of JB5545. 5.1.3 The die-casting machine should be designed to eliminate hazards or limit risks to the greatest extent so that it has intrinsically safe performance. If this is not possible or cannot be fully realized, personnel must be protected by providing safety protection devices. It is never allowed to ignore the above principles and simply rely on usage information to provide warnings or reminders to users. 5.1.3.1 Usage information can only be used to provide relevant notifications and warnings to users about remaining risks that cannot be eliminated or fully reduced through design and for which safety protection devices are ineffective or not fully effective. Usage information should not be used to make up for defects in design and manufacturing. 5.1.3.2 Hazards that can be eliminated by design should not be left to the user to solve (for example, if the machine needs to be modified). The manufacture and installation of safety protection devices should not be left to the user. 5.1.4 The design of the die-casting machine should fully reflect the principles of ergonomics and comply with the provisions of GB/T16251, GB/T14776 and other relevant standards
5.2 Safety protection requirements for die-casting hazardous areas. The main dangerous area of ??the machine is the die-casting mold area, and various measures must be taken to eliminate relevant risks. JB10145-1999
5.2.1 The locking mechanism of the mold must ensure that the die-casting mold is reliably locked after molding. 5.2. .1.1 It is best to design the closing mechanism and the locking mechanism as mechanisms that act independently of each other. The locking mechanism is recommended to be mechanical. If it is hydraulic, reliable sealing of the hydraulic cylinder should be ensured and a die-cast lock should be installed in an obvious position. Display device for molding force. 5.2.1.2 The mold closing procedure must be interlocked with the injection procedure to avoid injection before the mold locking procedure is completed. 5.2.2 To prevent the mold seat plate from moving in the molding direction after opening. 5.2.2.1 The protective device to prevent mis-closing should continue to function during the entire shutdown time after opening until the closing procedure is performed. 5.2.2.2 To prevent mis-closing. The closing protection device should be interlocked with the control system to prevent the failure of individual controls, which will not affect its function of preventing accidental closing
5.2.2.3 The protective device to prevent accidental closing should not be exposed. The contact with other parts of the die-casting machine may cause unsafe contact points. 5.2.2.4 The inspection of protective devices to prevent mis-fitting shall be convenient. 5.2.3 Protective devices (protective doors, protective covers or baffles) must be installed in the die-casting mold area. , to provide safety protection for all personnel who are at risk (operation, adjustment, maintenance, lubrication, inspection, cleaning or other personnel who may enter). The setting principle of the protective device is: a pair of die-casting machines with a molding force of less than 250kN. The machine must be installed on both sides of the machine and directly above the die-casting danger zone: a die-casting machine with a closing force equal to or greater than 250kN must be installed on both sides of the machine. 5.2.3.1 The selection, design and installation of various protective devices. The requirements should comply with the provisions of GB/T15706.2 and other relevant standards. 5.2.3.2 The installation of the protective device shall not cause any obstruction to the operation and sight of the operator. The protective device shall be interlocked with the control system. When the protective device is not inserted correctly. position, the die-casting machine cannot start the closing action. 5.2.3.3
5.2.3.4 The controller and interlocking device related to the protective device should be able to prevent accidental operation. 5.2.3.5 The positioning of the protective device. Finally, it must be able to prevent any part of the human body from entering the emergency area of ??the die-casting type or the dangerous parts of the nearby auxiliary equipment
5.2.3.6 After the protective device is positioned, it should be able to ensure that there is no molten metal on the parting surface of the die-casting type. It will not cause harm to the human body after being ejected. During the closing process of the die-casting machine cycle, the protective door of the parting surface should be able to be fully closed continuously. 5.2.3.72
If the control of the parting surface protective door is disconnected before the die-casting machine is closed, the die-casting machine should stop running or the movable seat plate should be returned. 5.2.3.8
5.2.3.9 In the cold chamber die-casting machine, the die-casting mold is fully opened. After the protection device to prevent mis-fitting takes effect, the parting surface protective door must be opened after the remaining material cake is ejected. Open. In a hot chamber die casting machine, you must wait until the injection piston begins to return before the parting surface protective door can be opened.
5.2.3.10 Inspection of protective devices should be convenient. 5.2.4 The die-casting mold closing should be controlled with both hands. Two-hand control should comply with the requirements of Type 3 of 9.2.5.7 in GB/T5226.1-1996. 5.2.4.1 The distance and arrangement position between the two controllers should prevent the possibility of operation by one hand or one hand and forearm, abdomen, knee and other parts. The time limit of synchronous operation shall not be greater than 15. 5.2.4.2 The arrangement of each controller shall prevent any part of the operator's body from reaching into the gap of the parting surface of the die-casting mold. 5.2.4.3 The number of two-hand controls shall match the number of operators specified on the selector switch. 5.2.5 The die-casting machine should be equipped with photoelectric safety devices as needed for safety protection of die-casting mold closing. 5.2.6 The design of the pressing machine should be able to ensure that after the molten metal is injected into the die-casting mold, the mold is opened for at least the shortest holding time required by the process. During this period, all other controls of the die-casting machine should be in interlock. state. 5.2.7 The die-casting mold replacement of the press holding machine should be designed with quick replacement and quick clamping type to shorten the die-casting mold replacement time and facilitate operation. 5.2.8 The design of the net holding machine must ensure that the die-casting mold is firmly installed on the moving parts. , fixed seat plate, there will be no danger due to accidental loosening,
5.3 Requirements for electrical systems
JB10145—1999
5.3.1 All electrical equipment must comply with the relevant regulations of GB/T5226.1 and GB16754 to prevent electrical hazards. 5.3.2 Due to the high working environment temperature of the die-casting machine, cooling facilities should be provided for the electrical cabinet in case the control components operating under high temperature conditions may be damaged.
5.3.3 The layout of cables must fully consider the possibility of being burned by molten metal. Protective devices should be provided where necessary and described in the instructions for use.
5.4 Requirements for control systems
The safety requirements and design of safety components of the die-casting machine control system should comply with the relevant regulations of GB/T16855.1. 5.5 Requirements for hydraulic and pneumatic systems
5.5.1 - General requirements
5.5.1.1 The system should be equipped with a device that can ensure that the working pressure is maintained within the allowable range. In addition, measures should be taken to ensure that the system does not cause danger due to internal leaks or severe pressure drops. 5.5.1.2 Measures should be taken to ensure that the system does not cause danger due to the connection, interruption or restoration of the control power source (electrical, hydraulic or pneumatic), pressure fluctuation or drop (expected or unexpected). 5.5.1.3 All components and parts installed in the system must be protected when the maximum working pressure is exceeded. Pressure can be controlled through a limit valve.
5.5.1.4 The layout of each component in the system, including pipelines, should be easy to access, safe and reliable for adjustment, maintenance and disassembly. Measures should be taken to ensure that there will be no significant loss of liquid during disassembly. 5.5.1.5 No foreign matter (such as scale, burrs, chips, etc.) should remain in the pipeline. The system must have means to control the cleanliness of the media (such as filters) to ensure that the functions of the device and components are safe and reliable. System cleanliness should comply with relevant standards. The hydraulic pipeline should have sampling means that comply with the provisions of JB5365.2 to regularly inspect the cleanliness and status of the hydraulic system. 5.5.1.6 The design and installation of pipes must prevent them from being used as steps and treads, nor can they be used to support components. Under no circumstances should any tensile forces be applied to pipes and pipe joints.
5.5.1.7. In addition to being fixed at both ends of fixed pipelines, fixed points must be added to longer pipelines and must be firmly fixed to avoid vibration or movement. Measures must be taken to prevent damage or hazards caused by thermal expansion. 5.5.1.8 No fasteners, connectors or other parts are allowed to be welded to the outer wall of the pipeline. 5.5.1.9 The equipment that should be installed according to the schedule must be fixed to the die-casting machine body, valve plate and other objects, and is not allowed to rely solely on pipe support. 5.5.1.10 For situations where dangerous incorrect connections may occur during pipeline assembly, the pipelines shall be marked. Both hard pipes and hoses must be installed to protect against any type of foreseeable damage (in particular, the layout of hoses should fully consider the possibility of being burned by molten metal), and should not hinder the adjustment, repair and replacement of components. It should hinder the work of the die-casting machine and the operation of the die-casting machine. 5.5.1.11 Glass and plastic containers should be protected against shattering. 5.5.2 Hydraulic system and accumulator
5.5.2.1 All hydraulic components (including seals, filters, etc.) must be compatible with the hydraulic oil used in the system. In order to avoid incompatibility problems due to flame-retardant hydraulic oil, it is also necessary to inspect the protective layer and other liquids related to the system (such as paint, lubricating oil, etc.) as well as the structural materials and installation materials that may come into contact with them (such as cables). , hoses and non-metallic operating parts, etc.) take additional precautions 5.5.2.2 Under normal operating conditions of the die-casting machine, the fuel tank should have good heat dissipation capabilities. A heat exchanger should be installed in the system. The user instructions 5
JB10145-1999
should indicate that the temperature in the fuel tank should be checked regularly. When the oil temperature exceeds 55C, the vehicle should be stopped immediately to check the reason. 5.5.2.3 In the design of the hydraulic system, measures should be taken to ensure the safe release of residual hydraulic energy. 5.5.2.4 For the hydraulic circuit including the hydraulic curtain energy device, when the hydraulic device is disconnected, the pressure of the energy device must be able to automatically release the load or the accumulator can be safely locked.
Note: In special circumstances, when pressure is still needed after the pressure device is disconnected, this requirement does not need to be met. However, prompt instructions must be given in a conspicuous position on or near the energizer 1, and the same instructions must be given in the operating instructions and pressure system diagrams. 5.5.2.5 The accumulator and the pressure components connected to it must take protective measures against excessive pressure on the liquid side, possible corrosion effects and excessive temperature. In special cases, protection against excessive pressure on the gas side is also required. 5.5.2.6 Hydraulic devices with accumulators must be equipped with warning signs stating "Attention - The device must be depressurized before maintenance work begins!\. 5.5.2.7 The installation position of the accumulator must be such that it is easy to access during maintenance. Accumulator The accumulator and all associated pressure components must be firmly fixed, safe and reliable
5.5.2.8 The manufacturing of the accumulator must be carried out in accordance with the relevant national regulations on pressure vessels. Any unauthorized machining of the accumulator is prohibited. T.. Modifications by welding or other measures.
5.5.2.9 The following safety instructions should be made on the accumulator or on the label of the accumulator: One text: "Caution - Pressure vessel\; - Pre-filled gas Pressure;
means "only nitrogen is allowed".
Note: When there is an agreement between the manufacturer and the user to use other suitable gases, the selected gas must be stated on the label. 5.5.2.10 The maintenance of the accumulator should be detailed in the instruction manual. Safety requirements, at least include the following: 1. Inspect and adjust the gas filling pressure according to the method recommended by the curtain energizer manufacturer. It should be noted that the allowable pressure cannot be exceeded. Gas is not allowed to be discharged after each adjustment and inspection: 1. Before removing the device from the device for repair, the fluid pressure must be reduced to zero: a condition that allows trained personnel to follow technical guidance documents and use parts and materials that are manufactured according to valid drawings and have certificates of conformity. Repair, installation and/or disassembly, replacement of parts: Before each disassembly of the accumulator, all liquid and gas pressures must be relieved. For continued safe use of the accumulator, assembly and acceptance inspection must be carried out by the accumulator. It must be done by the device manufacturer or the person who invests the rights. 5.5.3 Pneumatic system
5.5.3.1 Air-water separators and filters should be used in pneumatic systems to prevent moisture and external solid particles from entering the control system. When necessary, an oil mist lubricator should be installed to lubricate the components of the control system to minimize the hazards of unstable operation. 5.5.3.2 The discharged gas must not cause danger. Mufflers used in exhaust holes should not be dangerous, and sintered mufflers must be safe and reliable.
5.6 Protection requirements against thermal hazards
5.6.1 The design of the automated system for injecting molten metal from a self-insulating furnace into the injection chamber of a cold chamber die casting machine should reduce the possible hazards caused by transporting molten metal. to minimum.
5.6.2 The movement of the pouring ladle should be smooth, and there should be no overflow of liquid metal from the pouring ladle during the process of pouring molten metal from the holding furnace to the injection chamber.
5.6.3 Measures should be taken to prevent the pouring ladle hanging arm (the part that hangs the pouring ladle, which should not be in contact with the molten metal) from falling into the molten metal in the holding furnace
||JB 10145-1999
5.6.4 An indicating device or indicator light that can indicate the upper and lower limits of the amount of molten metal in the holding furnace should be installed. 5.6.5 Porcelain injection should be interlocked with the mold closing and injection mechanisms. Only when the die casting mold is completely closed and the injection punch returns to the extreme position, pouring can be started:
5.6.6 For hot chamber die casting The machine should use protective covers and heat-insulating covers to seal the surface of the molten metal in the holding furnace (increasing crucible) to prevent operators from accidentally extending into the molten metal. The cover plate provided should generally not be removed except when filling metal into the holding furnace and inspecting the holding furnace. A baffle should be set around the nozzle to minimize the harm of molten metal splashing. 5.7 Safety protection requirements for noise
5.7. Measures should be taken to minimize the noise radiation hazard of the die-casting machine. 5.7.2 A silencer should be used for the exhaust hole of the air valve. 5.7.3 Pipes arranged side by side The paths should not be in contact with each other to prevent noise and squealing. 5.7.4 When the die-casting machine is operating normally, its equivalent continuous sound pressure level shall not be greater than 85dB(A), and the measurement method shall be in accordance with JB/T6331.2. 5.8 Other safety. Protection requirements
5.8.1 The design of die-casting machine parts should minimize the hazards of narrow points and moving parts. The minimum distance to avoid compression of various parts of the human body should comply with the relevant provisions of GB12265.3. 2 The design of the die-casting machine should make full use of the safety distance to prevent human limbs from touching the danger zone. The installation and layout of the protective devices must also ensure the safety distance to prevent the limbs from touching the danger zone. The safety distance to prevent the limbs from touching the danger zone should comply with the provisions of GB12265.1 and other relevant standards. . 5.8.3 Die-casting machines should minimize the risk of parts breaking, loosening or falling. This should be ensured by design, reliable fixing or covering
5.8.4 Except for die-casting hazards. Outside the area, protective devices should also be provided for other areas where there may be dangers such as collision, pinching, entanglement, use of parts, liquid splashing or heat, noise radiation, etc. For dangers that only occur in the case of contact. In the area, blocking devices (such as yellow-coated isolation chains) can also be set up to draw personnel's attention to safety. 5.8.5 When there is a possibility of accidental movement of die-casting machine parts or pistons due to potential or kinetic energy, they should be set up. Stopping or locking mechanism.
5.8.6 For multi-person operations, safety protection devices should be provided for each auxiliary operator to meet the safety protection range and safety required for their respective operations. Requirements for protection retention time. 5.8.7 When repairing the machine or replacing or adjusting the die-casting mold, the relevant moving mechanism that may cause injury must be equipped with a power source (electric, hydraulic or pneumatic) cut-off device
5.8. 8. The die-casting machine should try to use centralized lubrication. If this is not possible, manual lubrication must be carried out under the conditions of ensuring that all mechanisms of the die-casting machine can be effectively stopped during shutdown (including insufficient pressure and lubricating oil amount). 5.8.9 The pressure oil used in the die-casting machine should be flame-retardant hydraulic oil (water-glycol based) to minimize the hydraulic pressure. The danger of oil burning should be strictly specified in the instruction manual. At the same time, the hydraulic oil for recommended applications must be described by type and performance, and cannot be determined solely by the name or brand of the hydraulic oil manufacturer. 5.8.10 The die-casting machine should be specified. Use water-soluble mold lubricant. When using oil-based mold lubricant, pay attention to fire prevention and explain it in the instruction manual
5.8.11 The die-casting lubricant nozzle should be connected with the mold opening and pick-up manipulator. Lock, only when the die-casting mold is fully opened and the pickup robot picks up the parts 7
9. The equipment that should be installed according to the schedule must be fixed to the die-casting machine body, valve plate and other objects. It is not allowed to rely solely on pipe support. 5.5.1.10 For situations where dangerous incorrect connections may occur during pipeline assembly, the pipelines shall be marked. Both hard pipes and hoses must be installed to protect against any type of foreseeable damage (in particular, the layout of hoses should fully consider the possibility of being burned by molten metal), and should not hinder the adjustment, repair and replacement of components. It should hinder the work of the die-casting machine and the operation of the die-casting machine. 5.5.1.11 Glass and plastic containers should be protected against shattering. 5.5.2 Hydraulic system and accumulator
5.5.2.1 All hydraulic components (including seals, filters, etc.) must be compatible with the hydraulic oil used in the system. In order to avoid incompatibility problems due to flame-retardant hydraulic oil, it is also necessary to inspect the protective layer and other liquids related to the system (such as paint, lubricating oil, etc.) as well as the structural materials and installation materials that may come into contact with them (such as cables). , hoses and non-metallic operating parts, etc.) take additional precautions 5.5.2.2 Under normal operating conditions of the die-casting machine, the fuel tank should have good heat dissipation capabilities. A heat exchanger should be installed in the system. The user instructions 5
JB10145-1999
should indicate that the temperature in the fuel tank should be checked regularly. When the oil temperature exceeds 55C, the vehicle should be stopped immediately to check the reason. 5.5.2.3 In the design of the hydraulic system, measures should be taken to ensure the safe release of residual hydraulic energy. 5.5.2.4 For the hydraulic circuit including the hydraulic curtain energy device, when the hydraulic device is disconnected, the pressure of the energy device must be able to automatically release the load or the accumulator can be safely locked.
Note: In special circumstances, when pressure is still needed after the pressure device is disconnected, this requirement does not need to be met. However, prompt instructions must be given in a conspicuous position on or near the energizer 1, and the same instructions must be given in the operating instructions and pressure system diagrams. 5.5.2.5 The accumulator and the pressure components connected to it must take protective measures against excessive pressure on the liquid side, possible corrosion effects and excessive temperature. In special cases, protection against excessive pressure on the gas side is also required. 5.5.2.6 Hydraulic devices with accumulators must be equipped with warning signs stating "Attention - The device must be depressurized before maintenance work begins!\. 5.5.2.7 The installation position of the accumulator must be such that it is easy to access during maintenance. Accumulator The accumulator and all associated pressure components must be firmly fixed, safe and reliable
5.5.2.8 The manufacturing of the accumulator must be carried out in accordance with the relevant national regulations on pressure vessels. Any unauthorized machining of the accumulator is prohibited. T.. Modifications by welding or other measures. bZxz.net
5.5.2.9 The following safety instructions should be made on the accumulator or on the label of the accumulator: One text: "Caution - Pressure vessel\; - Pre-filled gas Pressure;
means "only nitrogen is allowed".
Note: When there is an agreement between the manufacturer and the user to select other suitable gases, the selected gas must be stated on the label. 5.5.2.10 The maintenance of the accumulator should be detailed in the instruction manual. Safety requirements, at least include the following: 1. Inspect and adjust the gas filling pressure according to the method recommended by the curtain energizer manufacturer. It should be noted that the allowable pressure cannot be exceeded. Gas is not allowed to be discharged after each adjustment and inspection: 1. Before removing the device from the device for repair, the fluid pressure must be reduced to zero: a condition that allows trained personnel to follow technical guidance documents and use parts and materials that are manufactured according to valid drawings and have certificates of conformity. Repair, installation and/or disassembly, and replacement of parts: Before each disassembly of the accumulator, all liquid and gas pressures must be relieved. For continued safe use of the accumulator, assembly and acceptance inspection must be carried out by the accumulator. It must be done by the device manufacturer or the person who invests the rights. 5.5.3 Pneumatic system
5.5.3.1 Air-water separators and filters should be used in pneumatic systems to prevent moisture and external solid particles from entering the control system. When necessary, an oil mist lubricator should be installed to lubricate the components of the control system to minimize the hazards of unstable operation. 5.5.3.2 The discharged gas must not cause danger. The muffler used in the exhaust hole should not be dangerous, and the sintered muffler must be safe and reliable.
5.6 Protection requirements against thermal hazards
5.6.1 The design of the automated system for injecting molten metal from the self-insulating furnace into the injection chamber of the cold chamber die casting machine should reduce the possible hazards caused by transporting the molten metal. to minimum.
5.6.2 The movement of the pouring ladle should be smooth, and there should be no overflow of liquid metal from the pouring ladle during the process of pouring molten metal from the holding furnace to the injection chamber.
5.6.3 Measures should be taken to prevent the pouring ladle hanging arm (the part that hangs the pouring ladle, which should not be in contact with the molten metal) from falling into the molten metal in the holding furnace
||JB 10145-1999
5.6.4 An indicating device or indicator light that can indicate the upper and lower limits of the amount of molten metal in the holding furnace should be installed. 5.6.5 Porcelain injection should be interlocked with the mold closing and injection mechanisms. Only when the die casting mold is completely closed and the injection punch returns to the extreme position, pouring can be started:
5.6.6 For hot chamber die casting The machine should use protective covers and heat-insulating covers to seal the surface of the molten metal in the holding furnace (increasing crucible) to prevent operators from accidentally extending into the molten metal. The cover plate provided should generally not be removed except when filling metal into the holding furnace and inspecting the holding furnace. A baffle should be set around the injection nozzle to minimize the harm of molten metal splashing. 5.7 Safety protection requirements for noise
5.7. Measures should be taken to minimize the noise radiation hazard of the die-casting machine. 5.7.2 A silencer should be used for the exhaust hole of the air valve. 5.7.3 Pipes arranged side by side The paths should not be in contact with each other to prevent noise and squealing. 5.7.4 When the die-casting machine is operating normally, its equivalent continuous sound pressure level shall not be greater than 85dB(A), and the measurement method shall be in accordance with JB/T6331.2. 5.8 Other safety. Protection requirements
5.8.1 The design of die-casting machine parts should minimize the hazards of narrow points and moving parts. The minimum distance to avoid compression of various parts of the human body should comply with the relevant provisions of GB12265.3. 2 The design of the die-casting machine should make full use of the safety distance to prevent human limbs from touching the danger zone. The installation and layout of the protective devices must also ensure the safety distance to prevent the limbs from touching the danger zone. The safety distance to prevent the limbs from touching the danger zone should comply with the provisions of GB12265.1 and other relevant standards. . 5.8.3 Die-casting machines should minimize the risk of parts breaking, loosening or falling. This should be ensured by design, reliable fixing or covering
5.8.4 Except for die-casting hazards. Outside the area, protective devices should also be provided for other areas where there may be dangers such as collision, pinching, entanglement, use of parts, liquid splashing or heat, noise radiation, etc. For dangers that only occur in the case of contact. In the area, blocking devices (such as yellow-coated isolation chains) can also be set up to draw personnel's attention to safety. 5.8.5 When there is a possibility of accidental movement of die-casting machine parts or pistons due to potential energy or kinetic energy, they should be set up. Stopping or locking mechanism.
5.8.6 For multi-person operations, safety protection devices should be provided for each auxiliary operator to meet the safety protection range and safety required for their respective operations. Requirements for protection retention time. 5.8.7 When repairing the machine or replacing or adjusting the die-casting mold, the relevant moving mechanism that may cause injury must be equipped with a power source (electric, hydraulic or pneumatic) cut-off device
5.8. 8. The die-casting machine should try to use centralized lubrication. If this is not possible, manual lubrication must be carried out under the conditions of ensuring that all mechanisms of the die-casting machine can be effectively stopped during shutdown (including insufficient pressure and lubricating oil amount). 5.8.9 The pressure oil used in the die-casting machine should be flame-retardant hydraulic oil (water-glycol based) to minimize the hydraulic pressure. The danger of oil burning should be strictly specified in the instruction manual. At the same time, the hydraulic oil for recommended applications must be described by type and performance, and cannot be determined solely by the name or brand of the hydraulic oil manufacturer. 5.8.10 The die-casting machine should be specified. Use water-soluble mold lubricant. When using oil-based mold lubricant, pay attention to fire prevention and explain it in the instruction manual
5.8.11 The die-casting lubricant nozzle should be connected with the mold opening and pick-up manipulator. Lock, only when the die-casting mold is fully opened and the pickup robot picks up the parts 7
9. The equipment that should be installed according to the schedule must be fixed to the die-casting machine body, valve plate and other objects. It is not allowed to rely solely on pipe support. 5.5.1.10 For situations where dangerous incorrect connections may occur during pipeline assembly, the pipelines shall be marked. Both hard pipes and hoses must be installed to protect against any type of foreseeable damage (in particular, the layout of hoses should fully consider the possibility of being burned by molten metal), and should not hinder the adjustment, repair and replacement of components. It should hinder the work of the die-casting machine and the operation of the die-casting machine. 5.5.1.11 Glass and plastic containers should be protected against shattering. 5.5.2 Hydraulic system and accumulator
5.5.2.1 All hydraulic components (including seals, filters, etc.) must be compatible with the hydraulic oil used in the system. In order to avoid incompatibility problems due to flame-retardant hydraulic oil, it is also necessary to inspect the protective layer and other liquids related to the system (such as paint, lubricating oil, etc.) as well as the structural materials and installation materials that may come into contact with them (such as cables). , hoses and non-metallic operating parts, etc.) take additional precautions 5.5.2.2 Under normal operating conditions of the die-casting machine, the fuel tank should have good heat dissipation capabilities. A heat exchanger should be installed in the system. The user instructions 5
JB10145-1999
should indicate that the temperature in the fuel tank should be checked regularly. When the oil temperature exceeds 55C, the vehicle should be stopped immediately to check the reason. 5.5.2.3 In the design of the hydraulic system, measures should be taken to ensure the safe release of residual hydraulic energy. 5.5.2.4 For the hydraulic circuit including the hydraulic curtain energy device, when the hydraulic device is disconnected, the pressure of the energy device must be able to automatically release the load or the accumulator can be safely locked.
Note: In special circumstances, when pressure is still needed after the pressure device is disconnected, this requirement does not need to be met. However, prompt instructions must be given in a conspicuous position on or near the energizer 1, and the same instructions must be given in the operating instructions and pressure system diagrams. 5.5.2.5 The accumulator and the pressure components connected to it must take protective measures against excessive pressure on the liquid side, possible corrosion effects and excessive temperature. In special cases, protection against excessive pressure on the gas side is also required. 5.5.2.6 Hydraulic devices with accumulators must be equipped with warning signs stating "Attention - The device must be depressurized before maintenance work begins!\. 5.5.2.7 The installation position of the accumulator must be such that it is easy to access during maintenance. Accumulator The accumulator and all associated pressure components must be firmly fixed, safe and reliable
5.5.2.8 The manufacturing of the accumulator must be carried out in accordance with the relevant national regulations on pressure vessels. Any unauthorized machining of the accumulator is prohibited. T.. Modifications by welding or other measures.
5.5.2.9 The following safety instructions should be made on the accumulator or on the label of the accumulator: One text: "Caution - Pressure vessel\; - Pre-filled gas Pressure;
means "only nitrogen is allowed".
Note: When there is an agreement between the manufacturer and the user to select other suitable gases, the selected gas must be stated on the label. 5.5.2.10 The maintenance of the accumulator should be detailed in the instruction manual. Safety requirements, at least include the following: 1. Inspect and adjust the gas filling pressure according to the method recommended by the curtain energizer manufacturer. It should be noted that the allowable pressure cannot be exceeded. Gas is not allowed to be discharged after each adjustment and inspection: 1. Before removing the device from the device for repair, the fluid pressure must be reduced to zero: a condition that allows trained personnel to follow technical guidance documents and use parts and materials that are manufactured according to valid drawings and have certificates of conformity. Repair, installation and/or disassembly, and replacement of parts: Before each disassembly of the accumulator, all liquid and gas pressures must be relieved. For continued safe use of the accumulator, assembly and acceptance inspection must be carried out by the accumulator. It must be done by the device manufacturer or the person who invests the rights. 5.5.3 Pneumatic system
5.5.3.1 Air-water separators and filters should be used in pneumatic systems to prevent moisture and external solid particles from entering the control system. When necessary, an oil mist lubricator should be installed to lubricate the components of the control system to minimize the hazards of unstable operation. 5.5.3.2 The discharged gas must not cause danger. The muffler used in the exhaust hole should not be dangerous, and the sintered muffler must be safe and reliable.
5.6 Protection requirements against thermal hazards
5.6.1 The design of the automated system for injecting molten metal from the self-insulating furnace into the injection chamber of the cold chamber die casting machine should reduce the possible hazards caused by transporting the molten metal. to minimum.
5.6.2 The movement of the pouring ladle should be smooth, and there should be no overflow of liquid metal from the pouring ladle during the process of pouring molten metal from the holding furnace to the injection chamber.
5.6.3 Measures should be taken to prevent the pouring ladle hanging arm (the part that hangs the pouring ladle, which should not be in contact with the molten metal) from falling into the molten metal in the holding furnace
||JB 10145-1999
5.6.4 An indicating device or indicator light that can indicate the upper and lower limits of the amount of molten metal in the holding furnace should be installed. 5.6.5 Porcelain injection should be interlocked with the mold closing and injection mechanisms. Only when the die casting mold is completely closed and the injection punch returns to the extreme position, pouring can be started:
5.6.6 For hot chamber die casting The machine should use protective covers and heat-insulating covers to seal the surface of the molten metal in the holding furnace (increasing crucible) to prevent operators from accidentally extending into the molten metal. The cover plate provided should generally not be removed except when filling metal into the holding furnace and inspecting the holding furnace. A baffle should be set around the injection nozzle to minimize the harm of molten metal splashing. 5.7 Safety protection requirements for noise
5.7. Measures should be taken to minimize the noise radiation hazard of the die-casting machine. 5.7.2 A silencer should be used for the exhaust hole of the air valve. 5.7.3 Pipes arranged side by side The paths should not be in contact with each other to prevent noise and squealing. 5.7.4 When the die-casting machine is operating normally, its equivalent continuous sound pressure level shall not be greater than 85dB(A), and the measurement method shall be in accordance with JB/T6331.2. 5.8 Other safety. Protection requirements
5.8.1 The design of die-casting machine parts should minimize the hazards of narrow points and moving parts. The minimum distance to avoid compression of various parts of the human body should comply with the relevant provisions of GB12265.3. 2 The design of the die-casting machine should make full use of the safety distance to prevent human limbs from touching the danger zone. The installation and layout of the protective devices must also ensure the safety distance to prevent the limbs from touching the danger zone. The safety distance to prevent the limbs from touching the danger zone should comply with the provisions of GB12265.1 and other relevant standards. . 5.8.3 Die-casting machines should minimize the risk of parts breaking, loosening or falling. This should be ensured by design, reliable fixing or covering
5.8.4 Except for die-casting hazards. Outside the area, protective devices should also be provided for other areas where there may be dangers such as collision, pinching, entanglement, use of parts, liquid splashing or heat, noise radiation, etc. For dangers that only occur in the case of contact. In the area, blocking devices (such as yellow-coated isolation chains) can also be set up to draw personnel's attention to safety. 5.8.5 When there is a possibility of accidental movement of die-casting machine parts or pistons due to potential energy or kinetic energy, they should be set up. Stopping or locking mechanism.
5.8.6 For multi-person operations, safety protection devices should be provided for each auxiliary operator to meet the safety protection range and safety required for their respective operations. Requirements for protection retention time. 5.8.7 When repairing the machine or replacing or adjusting the die-casting mold, the relevant moving mechanism that may cause injury must be equipped with a power source (electric, hydraulic or pneumatic) cut-off device
5.8. 8. The die-casting machine should try to use centralized lubrication. If this is not possible, manual lubrication must be carried out under the conditions of ensuring that all mechanisms of the die-casting machine can be effectively stopped during shutdown (including insufficient pressure and lubricating oil amount). 5.8.9 The pressure oil used in the die-casting machine should be flame-retardant hydraulic oil (water-glycol based) to minimize the hydraulic pressure. The danger of oil burning should be strictly specified in the instruction manual. At the same time, the hydraulic oil for recommended applications must be described by type and performance, and cannot be determined solely by the name or brand of the hydraulic oil manufacturer. 5.8.10 The die-casting machine should be specified. Use water-soluble mold lubricant. When using oil-based mold lubricant, pay attention to fire prevention and explain it in the instruction manual
5.8.11 The die-casting lubricant nozzle should be connected with the mold opening and pick-up manipulator. Lock, only when the die-casting mold is fully opened and the pickup robot picks up the parts 7
5.1.11 Glass and plastic containers should be protected against shattering. 5.5.2 Hydraulic system and accumulator
5.5.2.1 All hydraulic components (including seals, filters, etc.) must be compatible with the hydraulic oil used in the system. In order to avoid incompatibility problems due to flame-retardant hydraulic oil, it is also necessary to inspect the protective layer and other liquids related to the system (such as paint, lubricating oil, etc.) as well as the structural materials and installation materials that may come into contact with them (such as cables). , hoses and non-metallic operating parts, etc.) take additional precautions 5.5.2.2 Under normal operating conditions of the die-casting machine, the fuel tank should have good heat dissipation capabilities. A heat exchanger should be installed in the system. The user instructions 5
JB10145-1999
should indicate that the temperature in the fuel tank should be checked regularly. When the oil temperature exceeds 55C, the vehicle should be stopped immediately to check the reason. 5.5.2.3 In the design of the hydraulic system, measures should be taken to ensure the safe release of residual hydraulic energy. 5.5.2.4 For the hydraulic circuit including the hydraulic curtain energy device, when the hydraulic device is disconnected, the pressure of the energy device must be able to automatically release the load or the accumulator can be safely locked.
Note: In special circumstances, when pressure is still needed after the pressure device is disconnected, this requirement does not need to be met. However, prompt instructions must be given in a conspicuous position on or near the energizer 1, and the same instructions must be given in the operating instructions and pressure system diagrams. 5.5.2.5 The accumulator and the pressure components connected to it must take protective measures against excessive pressure on the liquid side, possible corrosion effects and excessive temperature. In special cases, protection against excessive pressure on the gas side is also required. 5.5.2.6 Hydraulic devices with accumulators must be equipped with warning signs stating "Attention - The device must be depressurized before maintenance work begins!\. 5.5.2.7 The installation position of the accumulator must be such that it is easy to access during maintenance. Accumulator The accumulator and all associated pressure components must be firmly fixed, safe and reliable
5.5.2.8 The manufacturing of the accumulator must be carried out in accordance with the relevant national regulations on pressure vessels. Any unauthorized machining of the accumulator is prohibited. T.. Modifications by welding or other measures.
5.5.2.9 The following safety instructions should be made on the accumulator or on the label of the accumulator: One text: "Caution - Pressure vessel\; - Pre-filled gas Pressure;
means "only nitrogen is allowed".
Note: When there is an agreement between the manufacturer and the user to select other suitable gases, the selected gas must be stated on the label. 5.5.2.10 The maintenance of the accumulator should be detailed in the instruction manual. Safety requirements, at least include the following: 1. Inspect and adjust the gas filling pressure according to the method recommended by the curtain energizer manufacturer. It should be noted that the allowable pressure cannot be exceeded. Gas is not allowed to be discharged after each adjustment and inspection: 1. Before removing the device from the device for repair, the fluid pressure must be reduced to zero: a condition that allows trained personnel to follow technical guidance documents and use parts and materials that are manufactured according to valid drawings and have certificates of conformity. Repair, installation and/or disassembly, replacement of parts: Before each disassembly of the accumulator, all liquid and gas pressures must be relieved. For continued safe use of the accumulator, assembly and acceptance inspection must be carried out by the accumulator. It must be done by the device manufacturer or the person who invests the rights. 5.5.3 Pneumatic system
5.5.3.1 Air-water separators and filters should be used in pneumatic systems to prevent moisture and external solid particles from entering the control system. When necessary, an oil mist lubricator should be installed to lubricate the components of the control system to minimize the hazards of unstable operation. 5.5.3.2 The discharged gas must not cause danger. Mufflers used in exhaust holes should not be dangerous, and sintered mufflers must be safe and reliable.
5.6 Protection requirements against thermal hazards
5.6.1 The design of the automated system for injecting molten metal from a self-insulating furnace into the injection chamber of a cold chamber die casting machine should reduce the possible hazards caused by transporting molten metal. to minimum.
5.6.2 The movement of the pouring ladle should be smooth, and there should be no overflow of liquid metal from the pouring ladle during the process of pouring molten metal from the holding furnace to the injection chamber.
5.6.3 Measures should be taken to prevent the pouring ladle hanging arm (the part that hangs the pouring ladle, which should not be in contact with the molten metal) from falling into the molten metal in the holding furnace
||JB 10145-1999
5.6.4 An indicating device or indicator light that can indicate the upper and lower limits of the amount of molten metal in the holding furnace should be installed. 5.6.5 Porcelain injection should be interlocked with the mold closing and injection mechanisms. Only when the die casting mold is completely closed and the injection punch returns to the extreme position, pouring can be started:
5.6.6 For hot chamber die casting The machine should use protective covers and heat-insulating covers to seal the surface of the molten metal in the holding furnace (increasing crucible) to prevent operators from accidentally extending into the molten metal. The cover plate provided should generally not be removed except when filling metal into the holding furnace and inspecting the holding furnace. A baffle should be set around the nozzle to minimize the harm of molten metal splashing. 5.7 Safety protection requirements for noise
5.7. Measures should be taken to minimize the noise radiation hazard of the die-casting machine. 5.7.2 A silencer should be used for the exhaust hole of the air valve. 5.7.3 Pipes arranged side by side The paths should not be in contact with each other to prevent noise and squealing. 5.7.4 When the die-casting machine is operating normally, its equivalent continuous sound pressure level shall not be greater than 85dB(A), and the measurement method shall be in accordance with JB/T6331.2. 5.8 Other safety. Protection requirements
5.8.1 The design of die-casting machine parts should minimize the hazards of narrow points and moving parts. The minimum distance to avoid compression of various parts of the human body should comply with the relevant provisions of GB12265.3. 2 The design of the die-casting machine should make full use of the safety distance to prevent human limbs from touching the danger zone. The installation and layout of the protective devices must also ensure the safety distance to prevent the limbs from touching the danger zone. The safety distance to prevent the limbs from touching the danger zone should comply with the provisions of GB12265.1 and other relevant standards. . 5.8.3 Die-casting machines should minimize the risk of parts breaking, loosening or falling. This should be ensured by design, reliable fixing or covering
5.8.4 Except for die-casting hazards. Outside the area, protective devices should also be provided for other areas where there may be dangers such as collision, pinching, entanglement, use of parts, liquid splashing or heat, noise radiation, etc. For dangers that only occur in the case of contact. In the area, blocking devices (such as yellow-coated isolation chains) can also be set up to draw personnel's attention to safety. 5.8.5 When there is a possibility of accidental movement of die-casting machine parts or pistons due to potential energy or kinetic energy, they should be set up. Stopping or locking mechanism.
5.8.6 For multi-person operations, safety protection devices should be provided for each auxiliary operator to meet the safety protection range and safety required for their respective operations. Requirements for protection retention time. 5.8.7 When repairing the machine or replacing or adjusting the die-casting mold, the relevant moving mechanism that may cause injury must be equipped with a power source (electric, hydraulic or pneumatic) cut-off device
5.8. 8. The die-casting machine should try to use centralized lubrication. If this is not possible, manual lubrication must be carried out under the conditions of ensuring that all mechanisms of the die-casting machine can be effectively stopped during shutdown (including insufficient pressure and lubricating oil amount). 5.8.9 The pressure oil used in the die-casting machine should be flame-retardant hydraulic oil (water-glycol based) to minimize the hydraulic pressure. The danger of oil burning should be strictly specified in the instruction manual. At the same time, the hydraulic oil for recommended applications must be described by type and performance, and cannot be determined solely by the name or brand of the hydraulic oil manufacturer. 5.8.10 The die-casting machine should be specified. Use water-soluble mold lubricant. When using oil-based mold lubricant, pay attention to fire prevention and explain it in the instruction manual
5.8.11 The die-casting lubricant nozzle should be connected with the mold opening and pick-up manipulator. Lock, only when the die-casting mold is fully opened and the pickup robot picks up the parts 7
5.1.11 Glass and plastic containers should be protected against shattering. 5.5.2 Hydraulic system and accumulator
5.5.2.1 All hydraulic components (including seals, filters, etc.) must be compatible with the hydraulic oil used in the system. In order to avoid incompatibility problems due to flame-retardant hydraulic oil, it is also necessary to inspect the protective layer and other liquids related to the system (such as paint, lubricating oil, etc.) as well as the structural materials and installation materials that may come into contact with them (such as cables). , hoses and non-metallic operating parts, etc.) take additional precautions 5.5.2.2 Under normal operating conditions of the die-casting machine, the fuel tank should have good heat dissipation capabilities. A heat exchanger should be installed in the system. The user instructions 5
JB10145-1999
should indicate that the temperature in the fuel tank should be checked regularly. When the oil temperature exceeds 55C, the vehicle should be stopped immediately to check the reason. 5.5.2.3 In the design of the hydraulic system, measures should be taken to ensure the safe release of residual hydraulic energy. 5.5.2.4 For the hydraulic circuit including the hydraulic curtain energy device, when the hydraulic device is disconnected, the pressure of the energy device must be able to automatically release the load or the accumulator can be safely locked.
Note: In special circumstances, when pressure is still needed after the pressure device is disconnected, this requirement does not need to be met. However, prompt instructions must be given in a conspicuous position on or near the energizer 1, and the same instructions must be given in the operating instructions and pressure system diagrams. 5.5.2.5 The accumulator and the pressure components connected to it must take protective measures against excessive pressure on the liquid side, possible corrosion effects and excessive temperature. In special cases, protection against excessive pressure on the gas side is also required. 5.5.2.6 Hydraulic devices with accumulators must be equipped with warning signs stating "Attention - The device must be depressurized before maintenance work begins!\. 5.5.2.7 The installation position of the accumulator must be such that it is easy to access during maintenance. Accumulator The accumulator and all associated pressure components must be firmly fixed, safe and reliable
5.5.2.8 The manufacturing of the accumulator must be carried out in accordance with the relevant national regulations on pressure vessels. Any unauthorized machining of the accumulator is prohibited. T.. Modifications by welding or other measures.
5.5.2.9 The following safety instructions should be made on the accumulator or on the label of the accumulator: One text: "Caution - Pressure vessel\; - Pre-filled gas Pressure;
means "only nitrogen
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.