Some standard content:
JB/T9532--1999
This standard is a revision of ZBJ64016-1989 "Technical Conditions for MIG/MAG Welding Guns". In addition to making editorial revisions to ZBJ64016-1989 in accordance with the requirements of GB/T1.1-1993 and GB/T1.3-1997, this standard also makes the following revisions to the relevant technical contents: Change the working cycle of semi-automatic welding guns in Article 3.3 from 5min to 10min to coordinate with GB15579-1995 and other standards.
2 Cancel the annotation clause of Article 6.5.1.
3 Cancel the annotation clause in Article 6.9.2 and directly quote JB/T6233--1992 standard. 4 The temperature rise test method in Article 7.9 is changed to "When the temperature rise does not exceed 1℃ within 20min, it is considered to have reached the thermal stability state*.\" to "When the temperature rise does not exceed 2Kh, it is considered to have reached the thermal stability state....". The temperature rise test of the welding gun can be carried out together with the temperature rise test of the welding machine.
From the date of implementation, this standard will replace 2BJ64016-1989. This standard is proposed and managed by the National Electric Welding Machine Standardization Technical Committee. The drafting unit of this standard: Chengdu Electric Welding Machine Research Institute. The main drafter of this standard: Pan Ying.
1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Specifications for MIG/MAG Welding Guns
The specifications for MIG/MAG welding guns This standard specifies the technical specifications for semi-automatic and automatic MIG/MAG welding general welding guns. JB/T9532-1999
Replaces ZBJ64 016--1989
This standard applies to welding guns that convey solid steel welding wire or aluminum and its alloy welding wire. For welding guns that convey flux-cored wire, this standard can be referred to.
2 Cited 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/T2423.3---1993 Basic environmental test procedures for electrical and electronic products Test Ca: Steady-state damp heat test method (eqvIEC60068-2-3:1984)
GB4208-1993 Enclosure protection grade (IP code) (eqvIEC60529:1989)JB/T6233--1992 Wire reel and wire roll size (eqvISO864:1988)JB/T8748-1998MIG/MAG arc welding machine
3 Definitions
This standard adopts the following definitions.
3.1 Welding gun
It is composed of a conductive tube and a nozzle, etc., and is used to transmit current to the welding wire and transmit gas to protect the arc and welding area. 3.2 Insulating sheath
The insulating sheath on the welding cable, gas pipe, cooling water pipe, wire feeding hose and control line of the welding gun. 3.3 Rated current
The rated current value of the semi-automatic welding gun shall be expressed as the maximum allowable current when the duty cycle is 60% and the working cycle is 10min. The rated current value of the automatic welding gun shall be expressed as the maximum allowable current under the duty cycle of 100%. 4 Normal use conditions
4.1 The altitude shall not exceed 1000m.
4.2 The average maximum relative humidity of the wettest month is 90%, and the average minimum temperature of the month is 25℃. 4.3 Ambient temperature
4.3.1 The ambient temperature of the gas-cooled welding gun is -10℃~～+40℃. 4.3.2 The ambient temperature of the water-cooled welding gun is 5℃~40℃. 4.4 The inlet temperature of the cooling water is 5℃～30℃. 4.5 The wind speed in the place where the welding gun is used should be less than 1m/s, otherwise windproof measures should be added. 4.6 The place where the welding gun is used should be free of gas, steam, chemical deposition, dust and other explosive and corrosive media that seriously affect the use of the welding gun, and there should be no severe vibration and bumps.
5 Types and basic parameters
JB/T9532-1999
5.1 Welding guns are divided into semi-automatic and automatic welding guns according to the operation method. Welding guns are divided into water-cooled and air-cooled welding guns according to the cooling method; they are divided into wire drawing, wire pushing and wire pushing welding guns according to the wire feeding type. Among them, the wire drawing welding gun is divided into two types: the wire reel is inside the gun body and the wire reel is not inside the gun body.
5.2 Basic parameters are shown in Table 1.
Rated current A
General welding wire types
Aluminum and aluminum alloy welding wire
Steel welding wire
Aluminum and aluminum alloy welding wire
Steel welding wire
Aluminum and aluminum alloy welding wire
Steel welding wire
Aluminum and aluminum alloy welding wire
Steel coal wire
Aluminum and aluminum alloy welding wire
Steel welding wire
Aluminum and aluminum alloy welding wire
Steel welding wire
Steel welding wire
Wire diameter
0.6,0.8,1.0
1.2:1.6:2.0
0.8;1. 0;1. 2
1. 2;1. 6;2. 0
0.8,1.0;1.2
1.0;1.2;1.6
1.6,2.0,2. 5
1.0;1.2;1.6
1.2,1.6,2.0
Note: The wire drawing welding gun with the wire reel installed inside the gun body is suitable for conveying steel welding wire with a diameter of 0.6, 0.8 mm and aluminum and aluminum alloy welding wire with a diameter of 1.0 mm
5.3 The wire feeding speed of the wire drawing welding gun and the push-drawing welding gun is specified by the product standard. 6 Technical requirements
6.1 The welding gun should be processed according to the designed drawings to achieve the specified size and accuracy. 6.2 Insulation performance of welding gun
6.2.1 Insulation resistance
The insulation resistance between the welding gun body shell and the insulating sheath and the welding gun conductive nozzle shall not be less than 2.5MQ. 6.2.2 Insulation dielectric strength
6.2.2.1 The welding gun body shell and the insulating sheath and the welding gun conductive nozzle shall be able to withstand 1500V power frequency AC voltage for 1 minute without breakdown or flashover.
6.2.2.2 The control circuit and the welding gun conductive nozzle shall be able to withstand 800V power frequency AC voltage for 1 minute without breakdown or flashover. 6.3 The DC voltage of the control circuit shall not exceed 48V (average value); the AC voltage of the control circuit shall not exceed 42V (effective value). 6.4 Welding gun sealing performance
6.4.1 The gas circuit of the welding gun shall work normally at an intake pressure of 0.1MPa without leakage. 6.4.2 The water-cooled welding gun should work normally under the water inlet pressure of 0.2MPa without leakage. 6.5 Temperature rise limit of welding gun
6.5.1 The temperature rise of the hand-held part of the semi-automatic welding gun should not exceed 30K. 6.5.2 The temperature rise of the remaining parts of the semi-automatic welding gun except the hand-held part and the temperature rise of the automatic welding gun should comply with the relevant standards. 6.6 Surface quality
6.6.1 The surface of the molded parts and metal processed parts of the welding gun should be clean, smooth, free of burrs, pores, slag inclusions, peeling and other defects. Except for the necessary 204
blade angle, the edges should be rounded.
JB/T9532-1999
6.6.2 The outer surface roughness of the molded parts of the welding gun should not be greater than. 6.6.3 Electroplated parts should comply with the relevant standards. 6.7 Accuracy
6.7.1 Welding gun parts manufactured according to the same drawings shall be interchangeable. 6.7.2 After the welding gun is assembled, the conductive tip shall be measured according to the method specified in Article 7.4. The coaxiality error shall not exceed 5% of the inner diameter of the nozzle.
6.7.3 The contact surfaces shall be close and there shall be no obvious misalignment. 6.8 Welding cables and wire feeding, gas feeding and other pipelines 6.8.1 The welding cables, gas pipes, water pipes and wire feeding hoses of semi-automatic welding guns shall be covered with insulating sheaths. The insulating sheaths shall be resistant to corrosion by grease and solvents and have flame retardant effects. 6.8.2 For semi-automatic push-wire welding guns that convey steel welding wire, the length of the wire feeding hose shall not be less than 3m; the length of the wire feeding hose for aluminum welding wire shall be specified by the product standard.
6.8.3 For push-pull welding guns, the length of the wire feeding hose shall not be less than 6m. 6.8.4 For semi-automatic wire drawing welding guns with the wire reel not inside the gun body, when using steel welding wire, the length of the wire feeding hose should not be less than 5m. The length of the wire feeding hose for aluminum welding wire is specified by the product standard. 6.8.5 For wire drawing welding guns with a wire reel inside the gun body, the length of the welding cable, control line, air pipe, etc. should not be less than 10m. 6.8.6 For wire-pushing, wire-pushing or wire-drawing welding guns whose wire reels are not inside the gun body, when the wire feeding hose is wound around a circle with a diameter of 400 mm, the wire feeding speed when conveying steel wire should not change by more than 10% compared with when the wire feeding hose is straightened. 6.9 Gun body structure
6.9.1 Semi-automatic welding guns should be designed to be operated with one hand. 6.9.2 For wire-drawing welding guns with wire reels installed in the gun body, the interior should generally be able to accommodate a standard wire reel with a diameter of 100 mm, a width of 45 mm, and a center hole diameter of 16 mm. The wire reel should comply with the provisions of JB/T6233 and have the function of positioning and damping the wire reel.
6.9.3 Automatic welding guns should have start and stop devices. 6.10 Wire feeding traction force
6.10.1 For wire drawing welding guns with the wire reel installed inside the gun body, the traction force of the wire feeding mechanism shall not be less than 10N. 6.10.2 For wire drawing welding guns with push-pull welding guns or wire drawing welding guns with the wire reel not inside the gun body, the traction force of the wire feeding mechanism shall not be less than 30N. 6.11 The thread for connecting the welding gun contact nozzle shall be selected from M4, M5, M6, and M8. 6.12 Moisture resistance
After the moisture resistance test, the insulation resistance and insulation dielectric strength of the welding gun shall not be less than 70% of the values specified in Article 6.2. 6.13 Welding gun protection level
The protection level of the welding gun handheld part and the cable connector part shall not be less than IP20.6.14 Welding adaptability
When the welding gun and the corresponding matching welding machine are tested according to 7.15, the arc shall be easy to ignite, the welding process shall be stable, the weld shall be well formed, and there shall be no pores or other visible defects.
6.15 Mechanical impact resistance
When the welding gun is tested according to 7.13, except for scratches, there shall be no surface peeling, cracking or other damage. 6.16 Marking
6.16.1 The welding gun shall be marked with the model and rated current value at an appropriate position on its outer surface. The handwriting shall not be easily worn during the service life. 6.16.2 The main specifications of the blasting gun conductive nozzle and wire feed wheel shall be marked in a certain way. 205
6.17 Spare parts
JB/T 9532—1999
The spare parts such as the conductive nozzle and the nozzle of the welding gun must be complete, with no less than 2 pieces of each specification. 6.18 Life
The average trouble-free working time of the welding gun (excluding the nozzle, conductive nozzle and wire feeding hose) shall not be less than 500h. Note: This item is temporarily a recommended indicator.
7 Inspection method
7.1 Requirements for electrical instruments for inspection are as follows: Ammeter, voltmeter 0.5 level
Thermometer ±0.5K
7.2 Instrument type
For rectified current with a ripple factor greater than 10%, the root mean square value should be measured, and for rectified current with a ripple factor less than 10%, the average value should be measured.
7.3 Appearance inspection
The external dimensions, structure and roughness are measured by visual inspection and relevant measuring tools. 7.4 Measurement of the coaxiality of the conductive tip and the nozzle
Use a standard mandrel instead of welding wire and use a caliper to measure. The measuring point is located at the nozzle outlet and the maximum eccentricity is measured. 7.5 Interchangeability inspection
Disassemble the interchangeable parts of any two welding guns manufactured according to the same drawing, swap them and then install them. The reassembled welding gun should maintain the original performance and indicators.
7.6 Insulation resistance measurement
The insulation resistance measurement should be carried out before the dielectric strength test. Wrap the gun body shell and the outer surface of the insulating sheath of the welding gun with metal foil. Apply a 500V DC voltage between the metal foil and the welding gun conductive tip and read the value after stabilization. 7.7 Dielectric strength test
Apply a 50Hz, 1500V actual sine wave voltage between the metal foil wrapped around the outer shell of the welding gun and the outer surface of the insulating sheath and the welding gun conductive nozzle, and apply a 50Hz, 800V actual sine wave voltage between the control circuit and the welding gun conductive nozzle. The voltage applied at the beginning shall not exceed half of the specified value, and then rise to the full value within 10s and last for 1min. Rapidly reduce the voltage before cutting off the power supply. During the factory test, the duration of the full voltage is 5S.
During the test, observe whether there is flashover and breakdown; the leakage current shall not exceed 5mA. 7.8 Sealing test
7.8.1 Airtight test
Connect the welding gun to an air gap with an air inlet pressure of 0.1MPa, and then immerse the welding gun (except the nozzle outlet) in water for 10s. No bubbles should escape.
7.8.2 Watertightness test
Connect the water-cooled welding gun to a water source with an inlet pressure of 0.2MPa, block the outlet, and test for 1 minute. There should be no water leakage or seepage. The test can also be carried out with gas of the same pressure. 7.9 Temperature rise test
Clamp the welding gun on a bracket with negligible heat dissipation, and use a non-inductive resistor as the load. Pass the rated current according to the rated duty cycle of the welding gun (it can also be converted into a current with a duty cycle of 100%). Use a thermocouple or a spot thermometer to measure the temperature rise of the handheld part of the welding gun every 10 minutes, with no less than 5 measuring points, based on the hottest point. When the change in temperature rise does not exceed 2K/h, it is considered to have reached a thermally stable state. The temperature rise measurement should be carried out at half of the heating period in the last cycle. For water-cooled welding guns, the maximum water flow rate at the water outlet of the welding gun should not exceed 1.51/min during the temperature rise test. 7.10 Wire feeding hose performance test
JB/T9532—1999
Each specification of welding gun is matched with the corresponding welding machine, and the steel welding wire with the largest and smallest diameters of the welding gun is passed. Under the rated maximum and minimum wire feeding speeds, the wire feeding speed of the welding gun is measured when the wire feeding hose is in a straightened state and when the wire feeding hose is wound around a circle with a diameter of 400mm. The change rate of the wire feeding speed is calculated according to the following formula:_ 2 ×100%
Where: ——
Wire feeding speed when the wire feeding hose is in a straightened state, m/min, u-Wire feeding speed when the wire feeding hose is wound around a circle, m/min. 7.11 Wire feeding traction force test
Connect an ammeter to the wire feeding motor, extend the welding wire from the wire feeding wheel to a sufficient length (without passing through the welding gun conductive nozzle), and hang a weight at the end of the welding wire. Apply rated voltage to the wire feeding motor. When the gravity generated by the mass of the heavy object is equal to the rated traction force, if the wire feeding mechanism can lift the heavy object evenly and the motor current does not exceed the rated value, then the gravity of the heavy object at this time is the wire feeding traction force of the welding gun. 7.12 Moisture resistance test
The environmental conditions and methods of the moisture resistance test shall be carried out in accordance with GB/T2423.3. The temperature in the effective space of the test chamber shall be maintained at (40 ± 2) °C, and the relative humidity shall be maintained within the range of (93%)%. When the temperature of the welding gun reaches 40 °C, humidification shall be applied to prevent condensation on the welding gun. The insulation resistance and insulation dielectric strength tests after 48h test shall be carried out in accordance with Article 6.12. The welding gun subjected to moisture resistance test is not required to be tested in accordance with Article 6.2 before the moisture resistance test.
7.13 Mechanical impact testwww.bzxz.net
7.13.1 After the push-wire welding gun (if the welding gun uses a ceramic nozzle, the nozzle can be removed) is connected to the cable, it is suspended according to the dimensions specified in Figure 1, and then the welding gun is released at an initial velocity of zero, and impacts on a pine block of 500mm×500mm×20mm in size, and repeated 3 times.
Welding gun cable
Welding gun body
Pine block
7.13.2 The push-wire or wire-drawing welding gun (the wire reel is removed from the gun body) is in a horizontal state and falls freely from a height of 250mm to the cement floor. The test should be carried out three times. Note: Article 7.13.2 is temporarily a recommended indicator. 7.14 Welding gun protection level test
The test shall be carried out according to the method specified in Article 6.2 of GB4208. 7.15 Welding suitability test
The welding gun is matched with the corresponding power supply, and H08Mn2Si welding wire is used to weld on the low carbon steel plate by automatic welding. Two test plates are welded for each specification. The specification parameters shall meet the requirements of Article 8.6 of JB/T8748-1998. For welding guns that convey aluminum and aluminum alloy welding wire, the welding specifications are specified by the product standards. 8 Acceptance rules
8.1 The welding gun shall be inspected and qualified by the technical inspection department of the manufacturing unit before it can leave the factory. 8.2 Each welding gun shall be subject to factory inspection. The items, methods and requirements of factory inspection are shown in Table 2. 8.3 Welding guns shall be subject to type inspection in the following cases: a) Regular spot check of batch products (not less than once a year); b) There are major changes in the design, process or materials used in the welding gun, which are sufficient to affect certain characteristics and parameters; c) There is an unacceptable deviation between the factory inspection results of the welding gun and the previous type inspection results; d) New trial welding guns.
Table 2 Factory Inspection Items
Inspection Items
Appearance and Packing Inspection
Insulation Performance Test
Sealing Performance Test
Spare Parts Completeness Inspection
Inspection Method
According to 7.3 provisions
According to 7.6 and 7.7 provisions
According to 7.8 provisions
Visual method
Conform to 6.1, 6.6, 6.7.3, 6.8.1, 6.8.2, 6.8.3, 6.8.4.6.8.5, 9.1, 9.2.9.3
Conform to 6.2
Conform to 6.4
Conform to 6.17
In addition to all factory inspection items, type inspection shall also include the inspection items listed in Table 3. Table 3
Temperature rise test
Test items
Coaxiality test
Wire feeding hose performance test
Wire feeding traction test
Moisture resistance test
Welding gun protection level test
Welding adaptability test
Mechanical impact test
Interchangeability inspection
Test method
According to 7.9
According to 7.4
According to 7.10
According to 7. 11 provisions
According to 7.12 provisions
According to 7.14 provisions
According to 7.15 provisions
According to 7.13 provisions
According to 7.5 provisions
Comply with 6.5
Comply with 6.7.2
Comply with 6.8.6
Comply with 6.10
Comply with 6.12
Comply with 6.13
Comply with 6.14
Comply with 6.15
Comply with 6.7.1
8.5 Each item of type inspection shall comply with the requirements of this technical condition. At least two welding guns of each specification shall be inspected. If the initial test fails, double the number of welding guns shall be drawn for retest. If all the retests are qualified, the batch of products shall be considered to meet the technical conditions. If one product still fails in the retest, the batch of welding guns is considered to be unqualified. 9
Packaging, transportation and storage
Each welding gun and its accessories should be packed in a plastic bag and then placed in a wooden or paper packaging box. The welding gun should be fixed in the box. 9.14
9.2 The outer wall of the packaging box should be marked with the manufacturer's name and address, welding gun model, specifications, name, and packaging year and month. The words should not be blurred due to sun and rain.
9.3 The technical data packed with the welding gun and accessories include the instruction manual, nozzle, conductive nozzle, wire feeding hose parts drawing and welding gun certificate. 9.4 The welding gun should be protected from rain and snow during long-term storage and transportation. The welding gun should be stored in a warehouse with a relative humidity of no more than 85%, good air circulation, and a temperature of -25 to +55C.
10 Warranty period
JB/T9532—1999
If the user complies with the custody, transportation, storage and use conditions specified in the instruction manual, the manufacturer shall be responsible for repairing or replacing the welding gun free of charge within 6 months from the date of use, but within 12 months from the date of shipment from the manufacturer.
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.