Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Development of Waveform Control for Suppressing the Spatter Generation

대전류 $CO_2$ 용접에서 스패터 저감을 위한 파형제어 기법 개발

  • Published : 2001.12.01
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Abstract

A new waveform control technique has been developed for suppressing the spatter generation in the repelled transfer mode of high current $CO_2$ welding. Based on the spatters in repelled transfer, a waveform concept of concept was established in a way to drop the welding current to lower level right before the pendant weld drop detatchment so that the explosion force associating with drop detatchment was decreased. There were several variables to be controlled such as the moment of current drop, the base current and the time of retention at the base current. Either at lower base current or at longer retention time, the more instantaneous shot circuits were int개duced and thus the spatter generation rates were increased. With optimizing the control variables, the amount of spatter generated was decreased by about 30%.

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References

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