镁合金DE-GMAW焊接过程影响因素分析  

Analysis of influencing factors in de-gmaw welding process of magnesium alloy

作　　者：徐钊 XU Zhao(Department of physics and electronic information,Hengshui University.Hengshui 053000,China)

机构地区：[1]衡水学院物理与电子信息系,河北衡水053000

出　　处：《世界有色金属》2021年第18期147-148,共2页World Nonferrous Metals

基　　金：2020年衡水市市级科技计划自筹项目名称:交叉耦合电弧焊接中电弧稳定性的研究,课题号:2020011004Z。

摘　　要：目的:探索镁合金DE-GMAW焊接过程影响因素。方法:使用AZ31B镁合金作为材料,分别进行不同旁路电流下焊接测试、不同脉冲参数下焊接测试,以及不同焊丝间距下的焊接测试。观察不同条件下镁合金材料焊接效果,分析DE-GMAW焊接过程影响因素。结果:旁路电流的变化会造成熔宽、余高的改变,旁路电流为160 A材料焊缝成型效果最佳;脉冲峰值电流的增加使得材料拉伸性能呈现先上升后下降趋势,电流为70A材料拉伸性能最佳;焊丝间距为3mm时,较高的电弧稳定性提升了焊接质量。结论:镁合金DE-GMAW焊接过程影响因素,主要包括旁路电流、脉冲参数与焊丝间距三种因素,都会影响最终的焊接质量。Objective:To explore the influencing factors of de-gmaw welding process of magnesium alloy.Methods:AZ31B magnesium alloy was used for welding test under different bypass current,different pulse parameters and different wire spacing.The welding effect of magnesium alloy under different conditions was observed,and the influencing factors of de-gmaw welding process were analyzed.Results:the change of bypass current can cause the change of weld width and reinforcement,and the weld forming effect is the best when the bypass current is 160 a;the tensile property of the material increases first and then decreases with the increase of pulse peak current,and the tensile property of the material is the best when the current is 70 a;when the wire spacing is 3 mm,the higher arc stability improves the welding quality.Conclusion:the influencing factors of magnesium alloy de-gmaw welding process,including bypass current,pulse parameters and wire spacing,will affect the final welding quality.

关 键 词：镁合金 焊接 焊丝间距 焊接参数 

分 类 号：TG142.2[一般工业技术—材料科学与工程]