单一氟化物对钛合金激光焊的影响  

Effect of single fluoride on laser welding of titanium alloy

作　　者：许爱平 董俊慧[1] 甄甄杨 张艺程 Xu Aiping;Dong Junhui;Zhen Zhenyang;Zhang Yicheng(Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学,呼和浩特010051

出　　处：《焊接》2020年第9期24-26,62,共4页Welding & Joining

摘　　要：对TC4钛合金选取单一氟化物NaF,Na2SiF6,YbF3为活性剂进行活性焊接试验,采用5 mm单激光焊试验分析其对焊缝熔深、熔宽及等离子形态分析。试验结果表明,单激光焊试验中所选活性剂对焊缝熔宽和熔深影响各不相同,但均能减小熔宽和增加熔深,其中YbF 3效果最好;涂敷活性剂之后有效地降低了焊接等离子体的电子密度。Single fluoride NaF,Na 2 SiF 6 and YbF 3 were selected as active fluxes for welding experiment of TC4 titanium alloy,and their weld penetration,weld width and plasma morphology were analyzed by 5 mm single laser welding test.The results showed that the active fluxes selected in the single laser welding test had different effects on weld width and weld penetration,but all of them could reduce weld width and increase weld penetration,among which YbF 3 had the best effect.The electron density of the welding plasma was effectively reduced after active fluxes were applied.

关 键 词：TC4钛合金 激光焊 活性剂 等离子形态 

分 类 号：TG456.7[金属学及工艺—焊接]