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一、二氧化碳气体保护焊接的发展二氧化碳气体保护焊接是一种先进的焊接技术。它是用二氧化碳气体将熔化的金属与空气隔离;二氧化碳气体象一个保护罩,保护了熔化的金属,防止了空气的侵入。
First, the development of carbon dioxide gas shielded welding Carbon dioxide gas shielded welding is an advanced welding technology. It uses carbon dioxide gas to separate the molten metal from the air; the carbon dioxide gas acts as a protective shield that protects the molten metal and prevents intrusion of air.