In order to study the effect of current pulse frequency on the arc pressure of TIG welding,the distribution form of arc pressure as well as the penetration depth and weld width of TIG welding at different current pulse frequencies were detected with a small hole drilling method. The results showthat the arc pressure curve of TIG welding is similar to the normal distribution curve. The pressure in the center of arc is the biggest,and the closer to the edge,the smaller the pressure is. When the current pulse ...
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