Spatter reduction in GMAW of stainless steel sheets using CBT process
Spatter reduction in GMAW of stainless steel sheets using CBT process
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DOI：
10.1080/09507116.2011.606153
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发表时间：
2013-03
影响因子：
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通讯作者：
T. Era;Akinobu Ide;Toshiro Uezono;T. Ueyama;Y. Hirata
中科院分区：
文献类型：
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作者：
T. Era;Akinobu Ide;Toshiro Uezono;T. Ueyama;Y. Hirata
在非脉冲熔化极气体保护电弧焊（GMAW）中，在再燃弧之前将短路电流降低到一个较低的水平，可以减少飞溅。控制桥过渡（CBT）工艺响应于熔融金属过渡而优化了真实的时间内预测再燃的准确性，实现了稳定的低飞溅水平。本文研究了富氩保护气体保护不锈钢GMAW焊接短路过渡的控制方法，以减少飞溅并实现稳定电弧。新的CBT工艺已经开发，通过应用特定的弧长控制，不受电弧电压异常上升的影响，在富氩气体保护焊。该工艺可以抑制由焊接熔池的振动运动中的波动或在随后的短路/再起弧循环中的再起弧的不准确预测所引起的飞溅的产生，并且由此即使在不锈钢上也可以进行短路过渡模式下的无飞溅GMAW。
In non-pulsed gas metal arc welding (GMAW), spatter can be reduced by lowering the short-circuit current to a low level just before the re-arcing. The controlled bridge transfer (CBT) process, which optimizes accuracy of predicting the re-arcing in real time in response to the molten metal transfer, realizes stable, low spatter level. In this paper, the methods for controlling short-circuit transfers to minimize spatter and to realize stable arcs in GMAW of stainless sheet using argon-rich shielded gases are investigated. The new CBT process has been developed by applying the specific arc length control that is not affected by abnormal rise in arc voltage in argon-rich shielded gas welding. This process can suppress the spatter generation caused by fluctuation in the vibratory motion of the weld pool or inaccurate prediction of the re-arcing in the succeeding short-circuit/re-arcing cycle, and thereby spatter-free GMAW in the short-circuit transfer mode can be carried out even on stainless steels.