Summary of welding techniques for MIG welding process
Release time:
2022-11-24
【Summary Description】 MIG gas shielded welding: 1. Maintain 1/4-3/8 inch wire extension (length of wire extending from torch tip). 2. Use a small diameter wire when welding thin plates. Large diameter welding wire and high current welding machine are used for thick plate welding. Check the specific performance recommendations of the welder. 3. Welding the workpiece with the correct welding wire. Stainless steel welding wire welding stainless steel, aluminum welding wire welding aluminum, steel welding wire connecting steel. 4. Use the correct protective gas. Carbon dioxide is very suitable for welding steel, but it may be too hot for welding thin plates. When welding thinner materials, a mixture of 75% argon and 25% carbon dioxide should be used. Only argon can be used for welding aluminum. When welding steel, a mixture of three gases (helium + argon + carbon dioxide) may be used. 5. For better control of the weld bead, keep the wire aligned with the joint edge of the puddle. 6. When the welding operation is in an abnormal position (vertical welding, horizontal welding, top welding), the molten pool should be kept small to achieve the best control of the weld, and the smallest diameter wire should be used as much as possible. 7. Ensure that the correct wire size is used for the nozzle, liner and drive roller. 8. Always clean the welding gun liner and drive roller, so that the welding gun mouth no splash. If the welding gun is blocked or the wire feed is not smooth, please replace it. 9. Try to keep the welding torch straight during welding to avoid wire feeding problems. 10. Use both hands at the same time during the welding operation to ensure the stability of the welding gun and do this as much as possible. (The same applies to stick welding, TIG welding and plasma cutting). 11. Adjust the tightness of the spool and drive roller of the wire feeder so that it can just feed the wire, not too tight. 12. When the welding wire is not in use, it should be kept in a clean and dry place to avoid pollution and affect the welding effect. 13. Use DC reverse polarity DCEP power supply. 14. The drag (pull) torch technology provides deeper penetration and narrower welds. Pushing gun technology produces shallow penetration and wider weld.
MIG gas shielded welding:
1. Maintain 1/4-3/8 inch wire extension (length of wire extending from torch tip).
2. Use a small diameter wire when welding thin plates. Large diameter welding wire and high current welding machine are used for thick plate welding. Check the specific performance recommendations of the welder.
3. Welding the workpiece with the correct welding wire. Stainless steel welding wire welding stainless steel, aluminum welding wire welding aluminum, steel welding wire connecting steel.
4. Use the correct protective gas. Carbon dioxide is very suitable for welding steel, but it may be too hot for welding thin plates. When welding thinner materials, a mixture of 75% argon and 25% carbon dioxide should be used. Only argon can be used for welding aluminum. When welding steel, a mixture of three gases (helium + argon + carbon dioxide) may be used.
5. For better control of the weld bead, keep the wire aligned with the joint edge of the puddle.
6. When the welding operation is in an abnormal position (vertical welding, horizontal welding, top welding), the molten pool should be kept small to achieve the best control of the weld, and the smallest diameter wire should be used as much as possible.
7. Ensure that the correct wire size is used for the nozzle, liner and drive roller.
8. Always clean the welding gun liner and drive roller, so that the welding gun mouth no splash. If the welding gun is blocked or the wire feed is not smooth, please replace it.
9. Try to keep the welding torch straight during welding to avoid wire feeding problems.
10. Use both hands at the same time during the welding operation to ensure the stability of the welding gun and do this as much as possible. (The same applies to stick welding, TIG welding and plasma cutting).
11. Adjust the tightness of the spool and drive roller of the wire feeder so that it can just feed the wire, not too tight.
12. When the welding wire is not in use, it should be kept in a clean and dry place to avoid pollution and affect the welding effect.
13. Use DC reverse polarity DCEP power supply.
14. The drag (pull) torch technology provides deeper penetration and narrower welds. Pushing gun technology produces shallow penetration and wider weld.
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