来源：http://www.wadoukai.com/ 发布时间：2021-04-10 浏览次数：
It is well known that one of the key factors of welding quality is the configuration of welding power. At present, there are four kinds of power supply configuration or welding methods inside and outside the enclosure. In order to select the best, we made a comparative analysis.
(1) CO2 gas protection power supply (melting pole) uses CO2 gas as protection. Advantages: low price of CO2 gas, high production efficiency, high welding current density, deep weld pool of weldment matrix, high melting efficiency, fast deposition speed, production efficiency 2 ~ 4 times higher than manual welding, and good rust and crack resistance; disadvantages: when high current welding, poor welding surface forming, more spatter, manual removal of spatter on the workpiece after welding.
(2) MIG gas shielded welding (metal electrode), using argon as protection. Advantages: large welding pool depth, stable welding arc, good weld formation and high production efficiency; disadvantages: because argon is used as shielding gas to realize the welding process, the price of argon is on the high side, and the price of MIG welding power source is 3-4 times higher than CO2 / MAG welding power source.
(3) MAG gas shielded welding power supply (metal electrode). Advantages: large weld pool depth, high deposition efficiency, small welding spatter, stable welding process and beautiful weld can be obtained.
(4) TIG gas protection power supply (non melting electrode), using argon as protection. Advantages: because the electrode only heats the workpiece through the current, so that the workpiece and the welding wire form a molten pool, so there is no spatter, and the weld shape is beautiful; disadvantages: the depth of the arc molten pool is shallow, the deposition rate is low, and the production efficiency is not high. Because the welding process is all protected by argon, the price is on the high side.