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文章分析了在施工过程中产生的微量穿膛风对ＴＩＧ焊氩气层流保护作用、电弧稳定性及工艺参数的影响，指出微量穿膛风是小径管ＴＩＧ打底焊缝产生气孔的主要原因。
The article analyzes the effect of trace borehole wind generated during construction on the laminar flow protection, arc stability and process parameters of TIG argon arc welding. It is pointed out that the micro bore borehole is the main cause of the stomatal opening in the TIG weld of the small diameter pipe .