Our experimental results indicate the necessity of using inert gas as a protective measure in obtaining satisfactory welding effects.
试验结果表明了采用惰性气体保护焊接的必要性。
If the protective seal is not air proof or poor gas purity, it will also bring welding quality problems.
气路有密封不好的问题，或气体纯度不高，也会引起焊接质量问题。
According to the different welding materials, if adopts the carbon dioxide gas or mixed gas to be the protective medium to carry out the welding.
根据焊接材料的不同，可采用二氧化碳气体或混合气体作为保护介质进行焊接。
The results show that adopting CO2 gas protective welding instead of electrode welding rod can increase the efficiency of ensuring welding quality, which can also bring better economical benefit.
经过实践证明，替代焊条电弧焊，而采用CO2气体保护焊可提高效率，保证焊接质量，带来较好的经济效益。
The results show that adopting CO2 gas protective welding instead of electrode welding rod can increase the efficiency of ensuring welding quality, which can also bring better economical benefit.
经过实践证明，替代焊条电弧焊，而采用CO2气体保护焊可提高效率，保证焊接质量，带来较好的经济效益。
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