Working principle and use method of electric welding machine

1. Principle: Using the high-temperature arc generated when the positive and negative electrodes are short-circuited, the solder on t

Working principle and use method of electric welding machine

1. Principle: Using the high-temperature arc generated when the positive and negative electrodes are short-circuited, the solder on the electrode and the material to be welded are melted, so as to achieve the purpose of bonding.

2. Usage: Before use, check that the primary and secondary poles are connected correctly, and the input voltage is consistent with the nameplate of the welding machine. Do not touch the live part of the primary circuit after connecting the power supply.

3. When moving the welder, be sure to cut off the power supply, and don't drag the cable to move the welder. In case of sudden power failure during welding, the power supply should be cut off immediately. When you are welding, it is absolutely not allowed to use iron plate lap instead of welding machine grounding. There is also the shell of electric welding machine, which must have good zero connection or grounding protection, and the installation and disassembly of its power supply should be carried out by electricians. The insulation resistance between the primary and secondary windings of the welding machine, between the windings and the iron core, and between the windings, leads and the shell shall be not less than 0.5 megohm.

4. The length of primary power cord of AC arc welding machine is not more than 5m, and the length of secondary cable of welding machine is not more than 30m. Electrode holder and welding wire must be well insulated and firmly connected, and gloves should be worn when replacing covered electrode. Work in a damp place. Should stand on the insulating rubber board or wooden board. It is forbidden to weld containers or pipelines under pressure, and the power supply must be cut off before welding live equipment.