JB/T 8608-1997 Technical requirements for low pressure casting machines
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T8608—1997
Low Pressure Casting Machine
Published on August 18, 1997
Technical Conditions
Implementation on January 1, 1998
Ministry of Machinery Industry of the People's Republic of China
JH\T8608
This standard is formulated based on the existing technical level of China's high pressure casting machine and in accordance with the international level. In order to meet the needs of domestic and foreign trade and economic exchanges, this standard stipulates the technical requirements, test methods, inspection rules, etc. of low pressure casting machine. The National Foundry Standardization Technical Committee is the main body of this standard. The main bodies of this standard are Jinan Foundry and Forging Machinery Research Institute of the Ministry of Machinery Industry, Weihai Guanghua Machinery Factory, and Guanshui Forging Machinery Factory. The main drafters of this standard are Shi Daizeng, Jinfa Shen, Ji Guangke, and Chen Chouzhen. Scope
Machinery Industry Standard of the People's Republic of China
Low Pressure Casting Machine:
Technical Specifications
This standard specifies the technical requirements, test methods and inspection specifications for low pressure casting machines. The following standards are applicable to the following new low pressure casting machines. 2 Reference Standards
JB/T 8608-1997
The following standards include the following items: The difference between the referenced standards and the items in this standard is the same as the actual content of this standard. If the difference is not a significant difference, the standard shall be valid. All standards may be revised from time to time. When the standards are published, the parties to this standard shall explore the possibility of using the latest version of the standards. GR/T 1164 --J3915
G6 37668.1
GE 7532--$7
GT 256. 1-1996
GE/T331391
14/7365.1.-91
6303. /T 6331 2U2
ITI/T 8356. 19
ZB :50CGG·R3
3.1 Pressurization rate
Shape and other tolerances
General technical conditions for concentration control system
Technical conditions for gas core system
Industrial gas equipment Part 1: General technical conditions
General technical properties of machine
Measurement method for purity of machine
Pressure of hot chamber press
Micro-measurement method for washing machine over the height
Special equipment for clothing Technical requirements
The positive value of sound is determined
The technical conditions of the wave system and dyeing method of the metal cutting machine are random technical documents
In the pressure making process, it is called the wave, filling and pressure prevention stage, the air pressure in the insulation protection is recorded and its ratio is 3.2 and the liquid knife
In the low temperature and waiting time, the metal liquid in the dropper is about to reach the filter door, the actual temperature is the original pressure, 3.3 yuan mold force
In the low jade making process, the metal is limited to the full casting mold. The force brought by the insulation furnace. 3. 4 Pressure keeping method
In the low temperature storage silicon, after the room is filled, the sound fee is supplemented, and the filling in the insulation furnace will be filled with a higher force.
3.5 Liquid time
In the process of low pressure casting, the time required for the active liquid in the production liquid to rise to the outlet. 3.6 Mold filling time
In the process of bed casting, the time required for the metal to fill the mold from the opening. Approved by the machine
1999-01-01 implementation
JB86 account-197
In the process of low pressure casting, the time required for the special type of gold to be formed into a thin shell. 3.8 Ground pressure time
In the process of low pressure casting, the time required for the gas pressure on the surface of the metal in the furnace to rise from the positive pressure to the positive pressure. 3.9 Secondary pressure time
In the process of low pressure casting, the time required for the new pressure to be maintained after the mold is formed or the mold is formed. 3.10 Pressure interval
During the low pressure holding process, the gas pressure in the furnace should be kept at a minimum to ensure that the pressure drops to the required pressure of the atmosphere or the required pressure.
3.11 Repeated precision
During the low pressure holding process, the gas pressure time curve on the metal should be kept close to the given pressure curve at each injection.
4 Technical requirements
4.1 The casting machine should meet the requirements of the standard and be manufactured according to the technical documents specified in the final order. 4.? The external components of the casting machine should meet the requirements of the current relevant standards. 4.3 The pressure system and pneumatic system of the casting machine should meet the relevant provisions of G376% and G7932 respectively. 4.4 The electrical system of the casting machine shall comply with the relevant provisions of G/T526.1. 4.5 The safety requirements of the casting machine shall comply with the relevant national standards and industry standards of my country: 4.6 Appearance quality
4.6.1 All exposed welds of the casting machine shall be flat and there shall be no pores, fire marks, laser marks, etc. 4.6.2 Various pipelines on the casting machine shall be arranged neatly. +3 The exposure of the casting machine shall comply with the provisions of 159011
4. The latest cleaning flow of the casting machine after laser shall not be greater than 2g/1:L. 4.8 Factory precision Www.bzxZ.net
48.1 The plane between the two molds shall comply with the requirements of the 3rd grade tolerance in Table B3 of C114-1796 4.8.2 The parallelism between the guide samples shall comply with the requirements of the 5th grade tolerance value in Table B3 of CB/T1184-196. 4.9.1 The design and manufacture of the insulation furnace shall comply with the relevant standards and technical documents. 4.9.3 The temperature difference of the metal in the insulation furnace shall meet the following requirements: When the deep power is on and off, it should not be greater than 4.9.3 Under normal working conditions, the temperature of the insulation furnace (furnace temperature) should not be greater than 4.9.4 The leakage rate of the insulation furnace should meet the following requirements: a. When the pressure is sealed, it should not be greater than 25L/min: b. When the furnace body is dense, it should not be greater than 4nT./min. 4.10 Air transport
1.10.1 The machine sequence shall be carried out according to the requirements of the technical documents. The continuous room operation time shall not be 10,000. 4.10.2 The operating mechanism of each working mechanism of the machine shall be safe and reliable, and the operating parts shall be flexible and reliable, and the phase adjustment operation shall be stable and the abnormal stop shall be made.
4 The following process conditions of the coffee 3 poetry making machine should be adjusted according to the environment, and the work should be derived from the current market jade transportation rate of the technical support parts:
One port time:
Crusting time:
Filling time:
Road pressure time:
Pressure holding time:
Filling force:
Metal liquid temperature in the wet piece
JB/T8606-199 7
4.10.4 When the fermentation machine is running idle, the noise value 4 should be greater than B (A) 4.10.5 When the fermentation machine is in the liquid filling stage, the error of the increase in the bed rate should be 5:. [0. The idle operation time of the machine should not be greater than 305. 4.11 Load test
4.1E.1 Before the load operation, the idle operation test should be carried out and should comply with the provisions of 13.2. 411.2 The actual test should be carried out for no less than 2U times. 4.3 The actual machine should be connected to the actual machine. The temperature of the liquid surface flow should not be maintained at the production stage of the machine. The process efficiency should not exceed 9. 4.11.4
5 Test method
5.1 The method specified in 1BT5355.1 is reverse test. 3.1 The method specified in JB/T 5331.2 shall be used for determination. 3.3 The geometric toughness shall be determined by the method specified in 3.2.1.1 and 3.2.2.1 of JT+630S.2-92. 5.4 The provisions of the industrial rate identification method 5.4.1 Determination of the working temperature 7: When the flow meter is connected to the sensor, there should be no leakage and there should be no gold liquid in the sensor.
5.4.2 Determination method
The selected casting shall be adjusted to the requirements of the measured state technical document, and the specified pressure shall be reached (the pressure is greater than the pressure at the 20th time). On the recorded pressure time, the corresponding small pressure rate of 5913.192°C is calculated. Taking the second pressure rate as the reference, find the maximum and minimum pressure rate values recorded at another point, and calculate the pressure rate error of multiple points according to formula 1. The maximum value is the pressure rate error of this measurement, KAAAX1G
, the pressure rate error at the 1st second, 4
the maximum or minimum value of the pressure rate at the 1st second, MPa/s.
5.3 years old set || tt || turn the valve of the machine, according to the above method, in the liquid rising, filling the required water adding rate range, respectively measure the yam machine speed constant (in the filling stage, take 07MP/) the middle value and the maximum value (filling stage, take 00MF/) respectively. The Beijing also added three violation rate error rate is the range of the Bay machine plan delivery rate error rate. The 5.5 protection temperature error rate is 5.5. The actual limit of the gas expansion is 700: the temperature of the gold shop is greater than the width of the car, and the set value is 3.
JH/T8608-1997
Close the gas source, connect the insulation product to the atmosphere: the temperature measuring head is equipped in the gold immersion liquid.
5.5.2 Setting method
The temperature of the insulation furnace is measured for a set time of not less than i5. 5.3 The absolute value of the difference between the measured value and the agreed value is the insulation error. 5. Measurement of the gas leakage rate in the insulation furnace 5.6.1 Measurement conditions: The temperature of the insulation furnace is 1.5-2.5 °C. The gas leakage rate is 1.5-2.5 °C. The gas leakage rate is 2.5-3.5 °C. 5.6.2 Measurement method: Fill the furnace with appropriate pressure and speed, so that the actual pressure inside the furnace is 2 MPa. Use a meter to measure the pressure drop of the gas inside the insulation furnace. The time is 1.5-5. Then calculate the moisture gas leakage rate by (2): a. The gas leakage rate in the insulation furnace is 1.5-2.5 °C. The gas leakage rate is 1.5-2.5 °C. The gas leakage rate is 2.5-3.5 °C. MP and I
--the gas pressure inside the insulation is reduced.MP:
V--the filling volume of the insulation, L;
1--a certain time can be min.
, the determination of the complete technical parameters
5. 7.1 Determination case
--according to the relevant process requirements of the machine, determine the relevant process performance of the machine; the time scale is 15:
... The temperature sensor is not added and the insulation pressure is the rated pressure,
3. 7. 2. The fixed square operation
connection technology request document requirements, tracking the transfer of unusual 10 times of physical porcelain method. Record the first and the system of gas pressure hours - stop industry view, gold filling life section not on, with the high position and product of the policy jade as the starting point of the time interval as: "the time of the opposite pressure! The dose is, piFA.P with the first control of the body pressure curve as the given curve. The energy should be calculated according to 3). (
formula: 0. - one - second: the light set of teaching repeatability error, Return, p: ... "South piece first: 2nd compression force +MPa; first piece first, net, MPa:
--wrinkle jade force MTal
first liquid jade force, MPa.
5.7.3 Determine
filling mold hospital product quantity large value party to be controlled machine "technical parameter repeatability error, 6 inspection rules
6..! Each prayer port machine should be read by the staff of the cold inspection department inspection and storage qualification return and attached market product page disk qualified book before it can be white! ()
JB/8608-1997
6.1.2 Factory inspection: All items 4.6, 4.8, 4.9.4, and 4.10 shall be inspected and adjusted: All items inspected shall be qualified. .2 Type inspection
6.2.1 When any of the following situations occurs, type inspection shall be carried out. When new products are inspected: After formal production, the product tree, materials, and processes may have major changes in performance: When production is stopped for more than 2 years, when production is resumed;
When production is resumed, once every 3 years!
When there is a significant difference between the factory inspection results and the previous type inspection results, the national supervision agency shall propose the requirement for group inspection. 6.2.2 During type inspection, 2 rings of each batch shall be randomly selected from the qualified products of the factory inspection, and no less than one shall be inspected each time. 6.2.3 Type inspection shall also be carried out in accordance with the standards of the enterprise. All type inspection items shall be qualified.
In addition to marking, packaging, and delivery
7.1 The packaging of special machines shall comply with the relevant provisions of JR/T3356.1. 7.2 Each machine shall be equipped with a standard product label. The label shall comply with the provisions of GB/T13306. T,3 The machine to be manufactured shall be accompanied by the following technical documents. The preparation of random technical documents shall comply with the provisions of GB/T50006. a) Instructions for use:
b) Certificate of conformity
e) Packing list
7.4 The transportation of the machine shall comply with the provisions of .4 and 7.5 of JB1644-91. 5
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.