铝-镀锌钢板异种金属Pulsed+DE-MIG熔钎焊方法研究.pdf

文档介绍：第卷第期材料科学与工艺
22 4 Vol􀆰 22 No􀆰 4
年月
2 0 1 4 8 MATERIALS SCIENCE & TECHNOLOGY Aug. 2014

铝-镀锌钢板异种金属 Pulsed DE-MIG 熔钎焊方法研究
顾玉芬,邵玲,石玗,黄健康

兰州理工大学省部共建有色金属先进加工与再利用国家重点试验室兰州
( , 730050)
摘要: 为精确控制焊接热输入,从而控制铝钢异种金属界面区金属间化合物生长,提出一种新型高效低热输入的脉冲旁

路耦合电弧焊( )方法,用铝合金焊丝在镀锌钢板上利用平板堆焊实验对工艺参数进行优化
MIG Pulsed DE-MIG ER5356 .
在焊丝总电流保持不变,不同的焊接参数下焊接,结果表明随着旁路电流的增大,焊缝宽度显著变小,且焊
Pulsed DE-MIG
缝堆高明显变高采用、、等测试手段观察和分析连接界面区的微观组织,发现在连接界面区形成、
. OM SEM EDS Fe2 Al5 FeAl3
金属间化合物层,且母材热输入大时, 析出得多,随着母材热输入的减小, 析出逐步减少直至无析出
FeAl3 FeAl3 FeAl3 .
关键词: 脉冲旁路耦合电弧焊( );铝镀锌钢板异种金属焊接;母材热输入;金属间化合物
MIG Pulsed DE-MIG -
中图分类号: 文献标志码: 文章编号:
TG434 A 1005-0299(2014)04-0118-06
Pulsed DE-MIG brazing⁃welding method of
aluminum⁃galvanized steel dissimilar metals
GU Yufen,SHAO Ling,SHI Yu,HUANG Jiankang
(State Key Laboratory of Advanced Processing and Recycling of Non⁃ferrous Metal,
Lanzhou University of Technology, Lanzhou 730050,China)
Abstract
: A new, high efficiency and low heat input method of Pulsed DE-MIG was put forward to control
welding heat input precisely and growth of pounds in interface of aluminum⁃steel. Pulsed
DE-MIG process parameters were optimized by plate welding of aluminum alloy welding wire ER5356 welded
on galvanized steel. The total current of welding wire remained constant, and Pulsed DE-MIG of aluminum⁃
galvanized steel dissimilar metals was carried out at differ