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基于MATLAB的激光-脉冲MIG复合焊过程稳定性评价
引用本文:杜杨,李桓,韦辉亮,薛宽.基于MATLAB的激光-脉冲MIG复合焊过程稳定性评价[J].焊接学报,2017,38(4):81-85.
作者姓名:杜杨  李桓  韦辉亮  薛宽
作者单位:1.天津大学 天津市现代连接技术重点实验室, 天津 300072
基金项目:国家自然科学基金资助项目,天津市应用基础与前沿技术研究计划资助项目,国家科技支撑计划
摘    要:因焊接质量与焊接过程的稳定性有直接关系,且焊接过程中采集到的电信号数量庞大,难以实现有效数据的快速提取,文中提出一种基于MATLAB的激光-脉冲MIG复合焊焊接过程稳定性评价方法.采用电流周期T的均值与标准差评价焊接过程的周期性,峰值电流与基值电流的差值d的均值与标准差来衡量焊接过程的波动性,综合这两方面来评价焊接过程的稳定性.文中进行四组激光-脉冲MIG复合焊验证试验,其电流信号、电弧形态、熔滴过渡和焊缝形貌的分析结果与该评价方法所得结果一致,证明文中提出的评价方法是有效可靠的.

关 键 词:MATLAB    激光-脉冲MIG复合焊    稳定性评价
收稿时间:2015/2/7 0:00:00

Stability evaluation of laser-pulsed MIG hybrid welding process based on MATLAB
DU Yang,LI Huan,WEI Huiliang and XUE Kuan.Stability evaluation of laser-pulsed MIG hybrid welding process based on MATLAB[J].Transactions of The China Welding Institution,2017,38(4):81-85.
Authors:DU Yang  LI Huan  WEI Huiliang and XUE Kuan
Affiliation:1.Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300072, China2.Tianjin Da Qian Pipe Co., Ltd, Tianjin 300385, China
Abstract:Since the stability of welding process is directly related to welding quality, and the larger number of electrical signals collected during laser-pulsed MIG hybrid welding are difficult to extract valid data rapidly, a method based on MATLAB to evaluate the stability of laser-pulsed MIG hybrid welding process is proposed in this paper. The current cycle T with average and standard deviation was considered to estimate the cycliticy of welding process, the difference value d between peak current and base current with average and standard deviation was considered to estimate the volatility of welding process respectively, combining with two aspects to above evaluate the stability of welding process comprehensively. To verify the reliability of the method proposed in this paper, four groups of laser-pulsed MIG hybrid welding experiments were carried out. The analysis results with current wave form, arc shape, droplets transfer characteristics and welds appearance of test were consistent with the results by using the method put forward in this paper. The evaluation method proposed in this paper is proved to be effective and reliable.
Keywords:MATLAB  laser-pulsed MIG hybrid welding  stability evaluation
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