Safety technical protection regulations for AC spot welding machine
1, welding operation and cooperation personnel must wear labor protection articles according to regulations. Safety measures must be taken to prevent accidents such as electric shock, falling, gas poisoning and fire.
2. The electric welding machine used on site should be equipped with a waterproof, moisture-proof and sun-proof shed, and equipped with corresponding fire-fighting equipment.
3. Oil, wood, oxygen cylinders, acetylene generators and other inflammable and explosive articles shall not be piled up within the welding site 10m.
4. Before use, check that the primary and secondary wires are connected correctly, and the input voltage is consistent with the nameplate of the electric welding machine. Do not touch the live part of the primary circuit after connecting the power supply. The primary and secondary connections must be equipped with protective covers.
5, secondary tap connection copper plate should be compressed, the terminal should be gasket. Before closing), check the wiring nuts, bolts and other parts in detail to make sure they are in good condition, free from looseness and damage. There is a protective cover on the terminal.
6. When multiple electric welding machines are used centrally, they should be tapped on the three-phase power supply network to balance the three-phase load. The grounding devices of multiple welding machines shall be connected with grounding electrodes respectively, and shall not be connected in series.
Safety technical operation procedures of spot welding machine
I. Hazard factors and prevention and control measures
(1) Main risk factors:
1. Electric shock: In the process of operating or maintaining equipment, equipment leakage may cause electric shock injury.
2. Fire: During operation, spattered welding slag comes into contact with combustible substances, which may cause fire.
3. Scorching: Scorching may be caused by welding spatter or slag removal during welding operation.
4. Occupational hazards: occupational hazards such as welding smoke and arc generated in the process of welding operation.
5. Other injuries: scratches, falls, sprains and other injuries that may be caused during operation, handling and cleaning.
(2) Control measures:
1. Wear qualified labor protection articles correctly to ensure neckline, cuffs and hem? Three tight? .
2. Before operation, do a good job of equipment inspection according to the project, and check and ensure that the electrical circuit, limit, switch, safety and grounding devices are in good condition and reliable; Check whether the safety protection device is complete and effective; When maintaining, cut off the power supply in advance.
3. Before operation, oil stains on weldments and inflammable and explosive articles on site should be removed to ensure a safe distance.
4. In the process of handling, placing and processing the workpiece, we should concentrate our efforts and apply force evenly; Clean up the site in time to keep the site clean and unobstructed.
Second, the operation
(1) Before operation
1. Operators should be trained before operation. Operators should be familiar with the structure, performance, principle, fault treatment and operation method of spot welding machine.
2. Wear qualified labor protection articles correctly before operation to ensure the neckline, cuffs and hem. Three tight? . Wear flame-retardant work clothes, insulating shoes, insulating gloves, dust masks, protective glasses and other protective articles to ensure that labor protection articles are in good condition.
3. Before the operation, do a good job in equipment inspection according to the regulations, and check and ensure that the electrical lines, limits, switches, safety and grounding devices are in good condition and reliable; Check whether the safety protection device is complete and effective, and welding can be carried out only after it is confirmed to be in good condition; Power off in advance during maintenance, and hang safety warning signs.
4. Before operation, the inflammable and explosive articles at the welding site should be removed, and the flammable materials such as oil stain and paint at the welding site should be removed; Nothing can be placed on the workbench of the machine tool.
(2) In operation
5. When operating, adjust the appropriate power according to the load of the workpiece, and it is strictly prohibited to exceed the allowable range of the equipment.
6. When it is necessary to remove sundries and spattered welding slag from equipment or workpieces, stop the operation.
7. When handling or taking the workpiece, pay attention to the sharp corners, burrs and sharp edges of the workpiece, and wear protective gloves.
8. Pay attention to protect the circuit facilities of the control box from being damaged by touch when using; When the welding machine stops working when the temperature is lower than 0℃, the water stored in the cooling system must be blown clean with compressed air to prevent the pipeline from freezing or blocking. 9. During the operation of the equipment, it is not allowed to leave the job without authorization; Stop machining the workpiece in the middle, leave the job for some reason, or cut off the power supply in the middle.
10. In case of equipment abnormality or failure, the operation should be stopped, the power supply should be cut off in time, and the professionals should be informed to handle it. The operator shall not handle it without authorization.
1 1. Tools, raw materials, semi-finished products and finished products should be placed in a fixed position and firmly placed; Oil stains and debris on the ground should be cleaned in time to keep the workplace clean and smooth.
(3) After the operation
12. After the work, cut off the power supply and gas supply first, then turn off the water supply and clean up the equipment and operation site.
13. After the work, fill in the handover record as required and sign it for confirmation.
14. recyclable, non-recyclable and hazardous wastes are stored separately.
15. When maintaining equipment, it is necessary to cut off the power supply, set up safety warning signs and take necessary safety protection measures.
16. After maintenance, ensure that the protective facilities of the equipment are reset.
Third, emergency response.
1. In case of emergency, stop the operation immediately, help yourself and each other in time, and go to the hospital for treatment if necessary. 2. When evacuation is needed, cut off the power supply, gas supply and water supply of the equipment as much as possible.
3. Any emergency should be reported to the team leader or the leader on duty immediately.