虽然离子气流量的变化对穿孔熔池的孔径影响较小，但对熔池金属的流动性和焊缝成形影响较大。
The variation of the plasma gas flow can heavily influence the fluidity of the puddle metal and the weld formation though the diameter of the keyhole is hardly changed.
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。
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.
针对不锈钢穿孔等离子弧焊过程，熔池小孔的特征行为与弧光光谱辐射强度之间的关系进行了光谱试验研究。
The relationship between the keyhole behavior and arc light emission flux is studied by spectroscopic method in plasma arc welding of stainless steel.
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