铝合金电子束焊接熔透特征量的确定

Determination of characteristic parameters of weld penetration in electron beam welding of aluminum alloy

关键词:  电子束焊接  熔透  特征量  铝合金  视觉图像传感

Key words:  electron beam welding  penetration  characteristic parameter  aluminum alloy  visual image sensing

摘要:

基于视觉图像传感方法,通过设计的平板和斜板试验,对铝合金电子束焊接熔透特征量的提取进行了研究。结果表明,铝合金电子束焊接过程中熔深状态从未熔透向熔透转变时,特征区域宽(W)有相应的响应,特征区域后长(RL)无明显反应;经分析W作为熔透特征量,可用于监测焊接熔深状态的突变,为解决铝合金电子束焊接熔透控制提供了一种有效的途径。

Abstract:

Based on the visual image sensing method,extraction of the characteristic parameters of the weld penetration in electron beam welding of aluminum alloy was investigated with the flat plate and the slope plate experiments.The results show that the width of the feature zone(W) responds to the transition of the penetration status from the partial penetration to the full penetration during electron beam welding of aluminum alloy,but the rear part of the length of the feature zone(RL) does not.So the width of the feature zone can be used as the characteristic parameter of the penetration to monitor and control the variation of the penetration status,which provides an effective way for penetration control in electron beam welding of aluminum alloy.