TC4钛合金微束等离子弧堆焊接头成形研究  

Study on joint forming of TC4 titanium alloy by micro plasma arc welding

作　　者：韩志勇[1] 秦川[1] 雷娟娟[1] 贾鹏[1] 

机构地区：[1]中国民航大学天津市民用航空器适航与维修重点实验室,天津300300

出　　处：《焊接技术》2015年第8期10-13,1,共4页Welding Technology

基　　金：民航局重大专题项目(MHRD20130104)

摘　　要：分析研究了TC4钛合金薄板微束等离子弧堆焊工艺参数对接头成形的影响。试验结果表明,随焊接电流的增加,堆焊高度明显减小,堆焊宽度明显增加;随焊枪与焊件距离的增大,堆焊高度略微增加,堆焊宽度略微减小;随送丝速度的增大,堆焊高度和堆焊宽度均显著增加。热输入和稀释率是导致上述试验结果的主要原因。In this paper,it is analyzed that the effects of parameters in a TC4 titanium alloy sheet micro-plasma arc surfacing process on the joint forming.The experiments results showed that the surfacing height significantly decreases and the surfacing width obviously increases when adding the electric current;the increasing of the distance from the welding gun to the piece will bring a slight increase of the surfacing height and a slight decrease of the surfacing width;if the wire feeding speed raises,both the surfacing height and the surfacing width will notably increase.Welding heat input and dilution rate are the main cause of the test results.

关 键 词：微束等离子弧堆焊 TC4钛合金 接头成形 工艺参数 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG455[金属学及工艺—金属材料]