MIG焊参数及路径对增材制造熔敷层尺寸的影响  

Effect of MIG welding parameters and trajectory on layer geometry shape in additive manufacturing

作　　者：赵孝祥 孙策[1] 叶福兴[1] 罗震[1] 

机构地区：[1]天津大学天津市先进连接技术重点实验室,300072

出　　处：《焊接》2016年第4期33-36,74,共4页Welding & Joining

基　　金：国家自然科学基金资助项目(51375332)

摘　　要：基于机器人MIG焊技术,对增材制造金属零件进行了初步研究。通过分析熔化极惰性气体保护焊熔滴过渡形式及焊接参数在增材制造过程中对成形熔敷层几何尺寸的影响,得出了最佳成形时熔滴的过渡形式及焊接参数范围,初步探究了直线与直线过渡、直线与圆弧过渡和圆弧与圆弧过渡3种成形路径形式对成形精度的影响。结果表明,熔敷层宽度随焊接电流的增加呈线性增加,不同成形路径对成形精度有很大的影响。为了控制成形零件的成形精度,需要精确调节不同路径过渡处焊接参数,为增材制造技术的进一步研究和在传统制造行业中的应用奠定了基础。An additive manufacturing technique based on robotic MIG welding was investigated.The optimum droplet transition state and welding parameters were summarized through analyzing the effect of droplet transition state and welding parameters of MIG welding in additive manufacturing process on the deposited layer geometry shape.The influences of three kinds of typical trajectory including straight line with straight line,straight line with circle,circle with circle on the layer geometry shape in the additive manufacturing process were studied.The results show that the deposited layer width increases linearly with the increasing of welding current,and the different forming path has great influence on the forming accuracy.In order to control the forming precision of the forming parts,welding parameters should be precisely adjusted according to different path transition.The study in this paper laid the foundation for the further research of additive manufacturing technique and its application in traditional manufacturing.

关 键 词：增材制造 熔化极惰性气体保护焊 成形路径 

分 类 号：TG444.74[金属学及工艺—焊接]