The plasma cloud charge sensor was applied to detect the status of keyhole molten pool during pulsed plasma arc welding, furthermore, the detected signals were studied.
将等离子云传感器应用于脉冲等离子弧焊穿孔熔池小孔状态检测，并对检测信号的波形特征做了深入研究。
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Electron beam welding has significant keyhole effect, it induces the electron beam welding different from general melting, and also important influence on its welding stresses and distortion.
A numerical method is presented for the two dimensional quasi steady state heat transfer on high power density laser welding processes according to the keyhole model.