焊接方面的词汇？ 刚刚接到一位外国朋友的回复： is it in context ot tig welding? pipes? when you do it, then the argon (usually, but may be some other inert gas too) is not only fed through the tig nozzle, but also fed to the inside of the pipe so (with the ends closed) so that the molten metal (of the weld) is not exposed to air and hence liable for oxidation. it is in the inert gas atmosphere like the top layer (facing the nozzle). this is a common practice for the pipeline tig welding.查看更多
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