In basis of analyzing the features of the conventional arc welding technology, a DC low-frequency plasma welding power with fusion penetration is selected as the heat source for metal forming.
本课题在分析常规弧焊技术特点的基础上，选取熔透式低频直流等离子弧焊电源作为成形的热源。
Based on the analysis of site welding, the main welding defects are lack penetration, lack fusion, slag inclusion and porosity.
从现场施工情况分析，焊接的内部缺陷主要有未焊透、未熔合、夹渣和气孔等几种。
Based on the analysis of site welding, the main welding defects are lack penetration, lack fusion, slag inclusion and porosity.
从现场施工情况分析，焊接的内部缺陷主要有未焊透、未熔合、夹渣和气孔等几种。
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