The joint which is connected by welding method is called the welding joint, which is composed of welding seam, fusion zone, heat affected zone and its adjacent base metal.

用焊接方法连接的接头称为焊接接头，它由焊缝、熔合区、热影响区及其邻近的母材组成。

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And the effect of SPreading fusion of active flux on weld pool depth and arc phenomenon in A-TIG welding is also studied with properly experimental method.

采取适当的试验方法研究A- TIG焊活性剂对电弧现象及活性剂涂敷量对焊接熔深增加的作用。

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The welding method used was a PC-GMAW process with mixture gases shielding. Central crack for the welded plate was located in the fusion zone between welding seam and heat-affected zone.

焊接方法为脉冲熔化极混合气体保护焊，焊接板的中心裂纹处于焊缝与热影响区之间的熔合区。

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