Some standard content:
ICS25.220.70
Machinery Industry Standard of the People's Republic of China
JB/T10240-2001
Electrostatic Powder Coating Equipment
Electrostatic Powder Coating Equipment2001-05-23 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JB/T10240—2001
This standard is proposed and managed by the National Technical Committee for Standardization of Metal and Non-metal Coverings. The responsible drafting unit of this standard is the Second Design and Research Institute of the Ministry of Machinery Industry. The participating drafting units of this standard are Nordson (China) Co., Ltd., Jiangsu Taicang City Electrostatic Equipment Factory, Wagner Spraying Equipment (Shanghai) Co., Ltd., and Yudong Mechanical Engineering Company. The main drafters of this standard are Zhang Haicheng, Zou Yongfeng, Jin Chaoyang, Zhang Junda, Hong Peiliang, Gao Minjian, and Wang Chunfa. This standard is published for the first time.
1 Scope
Machinery Industry Standard of the People's Republic of China
Electrostatic powder coating equipment
Electrostatic powder coating equipment JB/T10240—2001
This standard specifies the composition and classification, technical requirements, testing and inspection, marking, packaging, transportation and storage, installation, use and maintenance of electrostatic powder coating equipment.
This standard applies to the design, manufacture, installation, commissioning, use and maintenance of electrostatic powder coating equipment. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB 1911990
GB 28941995
GB/T6388—1986
GB/T 6739—1996
GB/T 6807—1986
GB7691—1987
GB/ T 82641987
GB/T 9286—1998
GB/T13384-1992
GB 147731993
GB156071995
GB 162971996
JB/T5832—1991
3 Definitions
Pictorial symbols for packaging, storage and transportation
Safety colors
Safety signs
Transport packaging, receiving and shipping marks
Coating hardness pencil test method
Technical conditions for phosphating treatment of steel workpieces before paintingSafety regulations for painting operationsLabor safety and labor hygiene managementTechnical terms for painting
Scratch test for paint and varnish films (eqvISO2409:1992)General technical conditions for packaging of electromechanical products
Safety regulations for painting operationsSafety technical conditions for electrostatic spray guns and their auxiliary devicesSafety regulations for painting operationsSafety of powder electrostatic spraying processComprehensive emission standards for air pollutants
High-voltage electrostatic generator for painting
This standard adopts the definitions in GB/T8264 and the following definitions. 3.1 Booth for electrostatic powder spraying A room or enclosure structure that is closed or semi-closed, not easy to accumulate powder, has good mechanical ventilation, does not leak powder, and can effectively guide uncoated powder into a recovery device, which is specially used for electrostatic powder spraying. 2 Electrostatic powder spraying gun Electrostatic spraying powder gun 3.2
A spray gun that uses the principle of static electricity and has protective measures to spray powder coatings. Powder feeder
A device that can continuously and evenly supply powder coatings for spraying. Approved by China Machinery Industry Federation on May 23, 2001, implemented on October 1, 2001
JB/T10240—2001
3.4 Sieving equipment of powder Sieving powder (including recovered powder) to remove impurities and unqualified powder to meet the particle size requirements of spraying powder. 3.5 Recovery equipment of powder A device specially used to collect uncoated powder, separate it from the powder-gas mixture (dust-containing gas), and make the exhaust air meet the emission standards.
3.6 Powder spraying area Powder area
Area where dangerous, flammable and explosive suspended powder or accumulated powder exists due to powder spraying operation. 3.7 Irregular flow
All airflows that affect the control of wind speed, such as the airflow generated by the movement of workpieces and operators, the airflow formed by the workshop through-wind and the gaps between doors and windows.
3.8 Powder application rate Powder absorption coefficient at fist time The ratio of the amount of powder applied on the workpiece to the actual amount of powder sprayed when the electrostatic powder spray gun sprays a certain size of workpiece to the specified coating thickness (expressed as mass percentage).
3.9 Powder spraying quantity Powder spraying quantity The mass of powder coating sprayed by the spray gun nozzle per unit time. 3.10 Spraying circle diameter spraying circle diameter meta spray gun sprays dispersed powder coating on the vertical surface of the specified distance. When the spraying pattern is an ellipse, the spraying circle diameter refers to the effective length of the major axis of the ellipse. 3.11 Encircle action encircle action refers to the encircling effect of paint particles on the back of the workpiece when they move along the electric lines in the high-voltage electrostatic field. 3.12 Powder recovery efficiency powder recycle efficiency the ratio of the average reduction of powder in the inlet and outlet gas of the powder recovery device to the average powder amount in the inlet gas (expressed as mass percentage).
4 Composition and classification
Electrostatic powder coating equipment mainly consists of the following parts. 4.1 Electrostatic powder spraying room
According to the material form, it can be divided into: metal material and non-metallic material electrostatic powder spraying room. According to the operation form, it can be divided into: intermittent and continuous electrostatic powder spraying room. According to the exhaust form, it can be divided into: side exhaust type, bottom exhaust type and bottom side combined exhaust type electrostatic powder spraying room. 4.2 Electrostatic powder spray guns and high-voltage electrostatic generators can be divided into automatic and manual electrostatic powder spray guns according to the operation mode. According to the structural form, they can be divided into built-in high-voltage electrostatic generators and external high-voltage electrostatic generator electrostatic powder spray guns. 4.3 Powder supply and powder screening device
The powder supply device generally adopts the Venturi suction form, and the powder screening device generally has vibration and rotation forms. 4.4 Recovery device
Generally, single-stage or two-stage recovery is adopted, which is composed of one or two of the following forms, namely cyclone, filter element, sintering plate and bag. 2
4.5 Control system
JB/T10240—2001
Generally, it can be divided into manual control system and automatic control system 5 Technical requirements
5.1 General requirements
5.1.1 The design, manufacture and delivery of electrostatic powder coating equipment shall comply with the provisions of 4.1 and 4.2 of GB7691-1987. 5.1.2 Safety, sanitation, fire prevention, explosion prevention and noise in the powder spraying area shall comply with the relevant provisions of Chapter 4 of GB15607-1995. 5.1.3 The grounding of all equipment (including workpieces and catenary) in the powder spraying area shall comply with the provisions of 4.10 of GB15607-1995. 5.1.4
The layout of each equipment and pipeline in the powder spraying area shall be neat and beautiful, and shall meet the requirements of use, maintenance and safety. 5.1.5 In occasions where powder spraying and color change are frequent, the average color change time of electrostatic powder coating equipment should not be more than 45 minutes. The connection between the electrostatic powder spraying room, the recovery device and the pipeline should be well sealed without powder spillage. 5.1.6
5.1.7 The electrostatic powder spraying room, powder supply device and powder screening device shall be made of non-combustible or flame-retardant materials: the shell of the recovery device shall be made of conductive materials.
5.1.8 If the electrostatic powder spraying room, powder supply device, powder screening device and recovery device are made of ordinary steel, the ordinary steel workpieces used shall be phosphated according to the requirements of GBT6807 before assembly and coated with protective decorative coating. The coating adhesion shall reach level 1~2 (cross-cut method) specified in GB/T9286, the coating hardness shall not be lower than 2H (pencil hardness) specified in GB/T6739, and the coating thickness shall not be less than 50um5.2 Conditions of use
Ambient temperature: 0~40℃;
Relative humidity: ≤85%
Altitude: ≤1000m
Power supply voltage: single-phase AC 220V22V
Three-phase AC 380V±38V;
Power supply frequency: 50Hz
Compressed air: pressure ≥0.6MPa:
Water content ≤1.3g/m2;
Oil content ≤0.01mg/m2;
Transverse velocity of interfering air flow near powder spraying room: ≤0.3m/s: Surface temperature of workpiece entering powder spraying room: ≤50℃. There is no gas or liquid that corrodes metal and destroys insulation, and there is no severe vibration and impact at the operating location. 5.3 Electrostatic powder spraying room
5.3.1 The safety and health indicators of the electrostatic powder spraying room shall comply with the provisions of a, b and c in 4.3.3 of GB15607-1995. 5.3.2 The wind speed of the opening surface of the electrostatic powder spraying room shall be 0.5~0.6m/s, and the determination of its exhaust volume shall comply with the provisions of 6.1 and 6.2 of GB15607-1995.
5.3.3 The lighting in the electrostatic powder spraying room shall comply with the provisions of 4.7 of GB15607-1995. 5.3.4 The joints of the electrostatic powder spraying room shall be seamless, and the inner wall shall be smooth and flat without dead corners, easy to clean, and not easy to accumulate powder: and all or most of the uncoated powder can be organized into the recovery device. 3
JB/T10240—2001
5.3.5 The electrostatic powder spraying room should not be combined with the recovery device to form an integral structure that cannot be disassembled and is difficult to clean the powder. 5.3.6 The airflow in the electrostatic powder spraying room should be reasonably distributed, and the air can carry the powder to the recovery device in time to avoid turbulence. 5.3.7 The opening size of the electrostatic powder spraying room should be minimized under the premise of meeting the requirements of workpiece entry and exit and operation stations. 5.3.8 Under normal working conditions, there should be no powder overflow at the openings of the electrostatic powder spraying room. 5.3.9 The electrostatic powder spraying room should take corresponding measures (such as the bottom of the catenary is higher than the top of the powder spraying room) to prevent powder accumulation at the catenary and the primary hanger.
The distance from the spray gun electrode to the workpiece and the wall of the powder spraying room in the electrostatic powder spraying room should be no less than 150mm and 250mm respectively. 5.3.10
5.4 Electrostatic powder spray gun and high-voltage electrostatic generator The safety requirements of electrostatic powder spray gun and its auxiliary devices shall comply with the provisions of Chapters 4, 5 and 6 of GB14773-1993. 5.4.1
5.4.2 The technical requirements of high-voltage electrostatic generator for electrostatic powder spray gun shall comply with the provisions of Chapter 5 of JB/T5832-1991. 5.4.3 The maximum powder spraying amount of electrostatic powder spray gun shall not be less than 300g/min and shall be adjustable. Spraying circle diameter of electrostatic powder spray gun: effective diameter shall not be less than 300mm. 5.4.4
Encircling effect of electrostatic powder spray gun: effective diameter shall not be less than 100mm. 5.4.5
The one-time powder application rate of electrostatic powder spray gun shall not be less than 60%. 5.4.6
The installation distance between automatic electrostatic powder spray guns should not be less than 350mm5.4.7
Electrostatic powder spray guns should be easy to disassemble and install and easy to clean. 5.4.9
Electrostatic powder spray guns should have good charging effect, good atomization performance, uniform powder output, and no sparks when in use.5.5 Powder supply and powder screening device
5.5.1 The safety requirements of powder supply and powder screening device should comply with the provisions of 4.8 and 4.9 of GB15607-1995. 5.5.2 Powder supply and powder screening device should adopt a structure with good sealing and no powder leakage, not easy to accumulate powder and easy to clean. 5.5.3 Powder supply device should be able to supply powder continuously, evenly and stably; its powder supply amount should be adjustable within a certain range. 5.5.4
Powder screening device should be able to meet the particle size requirements of spray powder. 5.5.5 The inner wall of the powder supply pipe should be smooth and not easy to accumulate powder and block. 5.5.6 Powder supply pipes, air pipes and other hoses should be made of flame retardant materials, and their pressure resistance requirements should not be less than 1.5 times their maximum working pressure. 5.6 Recovery device
5.6.1 The safety requirements of the recovery device should comply with the provisions of 4.8, 4.9 and 6.4.1 of GB156071995. 5.6.2 The exhaust gas emission of the recovery device should comply with the relevant provisions of GB16297. If it is recycled, it should also comply with the provisions of 6.6 of GB156071995
5.6.3 The filter materials (such as filter elements, etc.) used in the recovery device should be selected from materials that are not easy to generate static electricity, blockage and moisture absorption. 5.6.4 The recovery device should use effective powder cleaning and powder conveying devices. 5.6.5 If an exhaust duct is required, a circular duct with flange connection should be used for laying. The inner wall of the duct should be smooth, and the wind speed in the duct should not be less than 8m/s. At the same time, it should be well grounded to prevent powder accumulation and static electricity. 5.6.6 The air volume processing capacity of the recovery device shall meet the exhaust volume requirements of the electrostatic powder spraying room connected to it. 5.6.7 The fan bearing of the recovery device shall be equipped with a protective device to prevent powder intrusion: if the fan noise is greater than 80dB (A), a fan soundproof room shall be set.
5.6.8 The powder recovery rate shall not be less than 95%
5.7 Control system
JB/T10240—2001
5.7.1 The control of various electrical and gas equipment in the powder spraying area should adopt the nearest centralized control method, and it is not advisable to adopt the decentralized control method: electrical devices unrelated to the powder spraying operation should not be set. 5.7.2 A fire alarm device should be installed in the automatic electrostatic powder spraying room, and an automatic fire extinguishing device should be installed. 5.7.3 When the size of the workpieces differs greatly or the gap between the workpieces is large, the automatic electrostatic powder coating equipment should adopt a workpiece identification system to realize the automatic intermittent spraying of the spray gun.
5.7.4 The automatic electrostatic powder spray gun shall be electrically interlocked with the fan of the recovery device. When the fan of the recovery device fails, the spray gun can automatically stop spraying.
5.7.5 The automatic electrostatic powder spray gun shall be electrically interlocked with the workpiece conveying device (such as a catenary, etc.). When the workpiece conveying device fails, the spray gun can automatically stop spraying.
5.7.6 The recovery device of the automatic electrostatic powder coating equipment shall be equipped with an air volume monitor. When the air volume is lower than the safe value, the automatic electrostatic powder spray gun can automatically stop spraying.
6 Test and Inspection
The electrostatic powder coating equipment shall be tested and inspected by the manufacturer for the wind speed of the opening surface of the electrostatic powder spraying room (see 6.1), the safety test and inspection of the electrostatic powder spray gun and its auxiliary devices (see 6.2), the test and inspection of the high-voltage electrostatic generator for the electrostatic powder spray gun (see 6.3), the spray performance test and inspection of the electrostatic powder spray gun (see 6.4) and the powder recovery rate test and inspection (see 6.5). Among them, 6.1 and 65 should be tested and inspected after the equipment is installed, and the others (6.2, 6.3 and 6.4) can be tested and inspected before leaving the factory, and a certificate of inspection should be provided before the equipment is installed and used. 6.1 Test and inspection of wind speed on the opening surface of the electrostatic powder spraying room 6.1.1 Test equipment
One handheld anemometer (error ± 5%). 6.1.2 Test conditions shall comply with the requirements of 5.2.
6.1.3 Test method bzxz.net
a) Turn on the recovery device and adjust it to normal working state: b) Measure the wind speed at the four corners and the center point of the opening plane of the electrostatic powder spraying room at 50mm from each edge;) The arithmetic average of the wind speeds at the above five points is the wind speed on the opening surface of the electrostatic powder spraying room. 6.1.4 The test results of the wind speed on the opening surface of the electrostatic powder spraying room shall comply with the provisions of 5.3.2. 6.2 Safety test and inspection of electrostatic powder spray gun and its auxiliary devices 6.2.1 Safety test and inspection of electrostatic powder spray gun and its auxiliary devices shall be carried out in accordance with Chapter 7 of GB147731993. The items are: a) Visual inspection; b) Impact test: drop test; d) High-voltage cable tension test e) Pressure test; f) High-voltage insulation test: g) Short-circuit test; h) Temperature test; i) Ignition test; i) Protection capability.
JB/T10240—2001
6.2.2 The safety test results of electrostatic powder spray gun and its auxiliary devices shall meet the requirements of 5.4.1 6.3 Test and inspection of high-voltage electrostatic generator for electrostatic powder spray gun 6.3.1 The test of high-voltage electrostatic generator for electrostatic powder spray gun shall be carried out in accordance with Chapter 6 of JB/T5832-1991 except for the appearance inspection. The items are:
a) Insulation test:
b) Load test:
Short circuit test:
d) Overcurrent protection test;
e) No-load test;
f) No-load impact test;
g) Load operation test;
h) Temperature rise test:
i) Safety test.
6.3.2 The test results of high-voltage electrostatic generator for electrostatic powder spray gun shall meet the requirements of 5.4.2. 6.4 Electrostatic powder spray gun spray performance test and inspection 6.4.1 Maximum powder spray test and inspection 6.4.1.1 Test equipment
a) One weighing device (weighing 1000g, sensitivity 1g); b) Three clean polyester bags;
c) One stopwatch;
d) 5kg of epoxy resin powder coating (particle size 180 mesh, resistivity 102~1013Q·am). 6.4.1.2 Test conditions shall comply with the requirements of 5.2. 6.4.1.3 Test method
a) Adjust the spray gun powder spray to the maximum working state; b) Tie the weighed clean polyester bag to the spray gun mouth, with the bag and the spray gun in a straight line, and spray powder for 1 minute;) Weigh the bag after powder spraying, subtract the mass of the clean bag, repeat three times and take the average value, which is the maximum powder spray of the spray gun. 6.4.1.4 The test results of the maximum powder spray of the spray gun shall comply with the provisions of 5.4.3. 6.4.2 Spray gun spray circle diameter test and inspection 6.4.2.1 Test equipment
a) One steel tape measure (2m);
b) Three Q235 phosphated steel plates (700mm×700mm×2mm);
d) One magnetic thickness gauge (accuracy 2um);
e) 5kg of epoxy resin powder coating (particle size 180 mesh, resistivity 1012~1013Q·cm). 6.1.2.2 Test conditions shall be in accordance with the requirements of 5.2. 6.1.2.3 Test method
a) Fix the steel plate and the electrostatic powder spray gun, set the center point of the steel plate, align the spray gun vertically with the center point of the steel plate and keep the distance between the spray gun nozzle and the steel plate at 150mm, and the steel plate is grounded;
JB/T10240—2001
b) Use the nozzle with the largest spray circle diameter for the spray gun, spray at a powder spray rate of 150-200g/min for 30s:) After the powder on the steel plate is solidified, draw a straight line through the center point of the steel plate (if the spray pattern is an ellipse, draw a straight line through the center point of the steel plate along the major axis of the ellipse), measure two points along the line whose coating thickness is equivalent to 20% of the coating thickness at the center point of the steel plate, measure the distance between the two points and record;
d) Repeat the test three times according to the above method, and take the arithmetic mean of the three data as the spray circle diameter of the spray gun. 6.4.2.4 The test results of the spray circle diameter of the spray gun shall comply with the provisions of 5.4.4. 6.4.3 Test and inspection of the embracing effect of the spray gun
6.4.3.1 Test equipment
a) One steel tape measure (2m);
b) Q235 phosphating steel pipe (wall thickness 3~5mm, length 250mm), several pieces of steel pipes with different diameters in the range of Φ100~200mm:
) One stopwatch:
d) One magnetic thickness gauge (accuracy 2μm):e) Epoxy resin powder coating (particle size 180 mesh, resistivity 1012~103Q·am) 5kg6.4.3.2 Test conditions
Ambient temperature 25~30℃;
Relative humidity 60%~70%:
Workpiece grounding resistance ≤100Q.
6.4.3.3 Test method
a) Fix the steel pipe and the electrostatic powder spray gun, with the distance between the spray gun nozzle and the steel pipe being 150mm, the steel pipe being grounded, and spraying the middle of the steel pipe with a powder spraying rate of 150~200g/min for 30s; b) After the powder on the steel pipe is solidified, on the middle section, the point closest to the spray gun is set as A, and the point farthest from the spray gun is set as B, and the coating thickness at any point on the semicircle between A and B (including A and B points); c) If the coating thickness at any point between A and B (including A and B points) is less than 20% of the coating thickness at point A, the diameter of the steel pipe should be reduced and tested again until it is not less than 20% of the coating thickness at point A; the diameter of the steel pipe is the effective diameter of the spray gun's embracing effect. 6.4.3.4 The test results of the embracing effect of the electrostatic powder spray gun shall comply with the provisions of 5.4.5. 6.4.4 Test and inspection of the powder coating rate of the spray gun 6.4.4.1 Test equipment
a) Several pieces of Q235 phosphating steel plates (700mm×700mmX2mm); b) One magnetic thickness gauge (accuracy 2μm); c) One epoxy resin powder coating (particle size 180 mesh, resistivity 1012~103Q·am) 5kg d) One weighing equipment (weighing 50kg, sensitivity 5g). 6.4.4.2 Test conditions
Ambient temperature 25~30℃;
Relative humidity 60%~70%;
Ground resistance of workpiece ≤1002.
6.4.4.3 Test method
JB/T10240—2001
a) Weigh the mass of the powder supply barrel filled with powder and the steel plate without powder coating respectively, and record them; b) Fix the steel plate and ground it, aim the spray gun vertically at the steel plate and keep the distance between the spray gun nozzle and the steel plate at 200mm; c) Spray the steel plate evenly on one side at a powder spray rate of 150~200g/min to ensure that the coating is uniform at each point; d) Carefully remove the steel plate after spraying, weigh and record it, and calculate the mass of the powder coated on the steel plate; e) Weigh the mass of the powder supply barrel after spraying, record it, and calculate f) After the powder on the steel plate is solidified, measure the coating thickness at the four corners and the center point 50 mm away from each edge of the steel plate, and calculate the arithmetic average coating thickness of the steel plate:
g) The arithmetic average coating thickness of the steel plate should be 70μm ± 5μm. If it does not meet the requirements, the above method should be used again for testing; h) Calculate according to formula (1):
Φ=ZZ,×100%
In the formula:
——·One-time powder application rate:
Z,——Mass of powder applied on the steel plate, g: Z2 Powder consumption in the powder supply barrel, g.
6.4.4.4 The one-time powder application rate test results of the electrostatic powder spray gun shall comply with the provisions of 5.4.6. 6.5 Powder recovery test and inspection
6.5.1 Test equipment
a) One weighing device (weighing 5kg, sensitivity 5g); b) One clean polyester bag;
c) 5kg of epoxy resin powder coating (particle size 180 mesh, resistivity 1012~103Qam). 6.5.2 Test conditions shall be in accordance with the requirements of 5.2.
6.5.3 Test method
a) Connect the weighed clean polyester bag to the outlet of the recovery device, turn on the recovery device, and spray powder at a powder spray rate of about 50g/min at a distance of 300mm from the nozzle of the spray gun to the suction port of the recovery device; b) After the powder is sprayed, stop the machine and weigh the bag mass to calculate the mass of the powder in the bag; c) Calculate according to formula (2):
n=（1-W,/W,） ×100%
Where: n
Powder recovery rate:
W,—mass of powder in the bag, kg;
W2mass of sprayed powder, 5kg.
6.5.4 The test results of powder recovery rate shall comply with the provisions of 5.6.8. 7 Signs
7.1 Safety colors and safety signs that meet the requirements of GB2893 and GB2894 shall be set in a conspicuous position in the powder spraying area. (2)
7.2 Durable signs should be placed in obvious places on the main components of electrostatic powder coating equipment. The signs should include the following: a) Manufacturer name and trademark:
b) Product name and model:
c) Main technical parameters, such as rated minimum exhaust volume, installed power, etc.: d) Manufacturing date and factory number.
7.3 The signs of electrostatic powder spray guns should also comply with the relevant provisions of 9.2 of GB14773-1993, 8
8 Packaging, transportation and storage
8.1 Packaging
JB/T10240-2001
8.1.1 The packaging of electrostatic powder coating equipment should comply with the relevant provisions of GB/T13384. 8.1.2 The packaging box should have "product mark" and "shipping and receiving mark" in obvious places, and be marked with clear marks such as "upward", "handle with care" and "afraid of moisture" in accordance with the provisions of GB191: "shipping and receiving mark" should comply with the relevant provisions of GB/T6388. 8.1.3 The electrostatic powder coating equipment should have the following random technical documents, which should be packed and placed in the packaging box and moisture-proof: a) Product instruction manual (including equipment installation diagram, system diagram, electrical schematic diagram, list of wearing parts and safety requirements, etc.) and operation manual;
b) Product certificate:
9 Random spare parts and random tool list;
d) Packing list.
8.1.4 All parts of the product should be firmly fixed and have necessary inner packaging to avoid collision and damage during transportation. 8.2 Transportation
During loading and unloading and transportation, strong vibration, inversion and rain should be prevented. 8.3 Storage
It should be stored in a dry and well-ventilated room, and there should be no corrosive gas or liquid around it. 9 Installation, use and maintenance
9.1 Installation
9.1.1 The floor of the powder spraying area shall comply with the provisions of 4.6 of GB15607-1995 9.1.2 The location of the powder spraying area shall comply with the provisions of 4.4 and 4.13 of GB15607-1995. 9.1.3 During installation, check whether all supporting parts are complete and whether the accessories are complete; after installation, all parts should be connected firmly and tightly without looseness. 9.2 Use and maintenance
9.2.1 The safe operation and maintenance procedures of the equipment shall be followed in accordance with the provisions of Chapters 8, 9 and 10 of GB7691-1987 and this standard. 9.2.2 The use and maintenance of electrostatic powder coating equipment shall also comply with the provisions of Chapter 8 of GB15607-1995. 9
Mechanical Industry Standard
Electrostatic Powder Coating Equipment
JB/T10240—2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
1/16 Printing Sheet 3/4
4 Word Count 20000
First Edition July 2001
First Printing July 2001
Print Quantity 1-500
Price 1200 Yuan
2001-051
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn10
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