The tube is blanketed in an inert gas such as nitrogen or argon.
管子被整个地漫浸在流动的氮或氩等惰性气体中。
After visual inspection and metallographic test, analysis and discuss the welding zone cracking reasons for 6061 and A7003 aluminum alloy thin-walled tube after TIG (argon shielded arc) welding.
通过宏观及微观检测，分析了6061铝合金管及A7003铝合金薄壁管经TIG(氩弧)焊后的焊接区开裂的原因。
Meanwhile, the invention also discloses a welding method of the stainless steel tube and an argon shield apparatus used in the welding method.
同时本发明也公开了不锈钢管的焊接方法以及焊接方法中使用到的氩气保护装置。
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