Shandong Bee Gas Energy Tech Co., Ltd.

The development of shielding gases for MIG welding was tailored for MIG gas, used in Arco’s Welding Development Center, which contains Argon and CO2, and occasionally He, in other engineering cases. With regard to shielding, the gas mixture surrounds the weld pool creating a protective blanket that shields the molten metal from the incompatible air and oxidation. The composition of MIG gas may be changed according to the kind of metal being welded and the alloyed characteristics of the weld. For example, for aluminum, the mixture should contain a higher percentage of argon to ensure sufficient stability of the arc and smoothness of the weld bead. On the other hand, during welding of steel, a greater share of carbon dioxide can be used because of increased heat and penetration aid. The amount of argon may be reduced in other steels. It's noted that the right selection of MIG gas has great effects on the quality, efficiency, and constancy of welds produced in different industrial and manufacturing processes.