电焊机2024，Vol.54Issue(7)：76-82,7.DOI:10.7512/j.issn.1001-2303.2024.07.11
焊接速度对铝钢异种金属激光填丝熔钎焊性能的影响
Effect of Welding Speed on the Properties of Aluminum/Steel Dissimilar Metal by Laser Wire Fusion Brazing
摘要
Abstract
Aluminum alloy E600 and galvanized steel DP590D+Z for automotive body were tested by laser wire welding at different welding speeds.ER4047 wire was selected as welding material.The weld morphology,intermetallic compound layer thickness and mechanical properties were analyzed at different welding speeds.The test results show that the brazing joint with defects free and certain tensile strength can be obtained by laser wirefusion brazing with appropriate welding pa-rameters.In order to ensure the performance of the weld joint,it was necessary to control the intermetallic compound thick-ness of FeAl2 and FeAl3 at the interface.With the increase of welding speed,the line energy and the intermetallic compound thickness decreased.On the basis of meeting the requirements of aluminum and steel dissimilar metal welding forming,the welding speed can be selected as far as possible to control the thickness and ensure the performance of the joint.Considering the linear load of the joint and production efficiency,the optimal welding speed was 1.5 m/min.The linear load was about 197 N/mm,and the converted strength of aluminum alloy was 219 MPa,which was equivalent to 81%of the strength of the base metal.关键词
铝/钢/激光填丝焊/熔钎焊/焊接速度/金属间化合物Key words
aluminum/steel/laser wire welding/fusion brazing/welding speed/intermetallic compound thickness分类
矿业与冶金引用本文复制引用
周丹,高润凯,熊大辉,张家鹏,何军,王学英..焊接速度对铝钢异种金属激光填丝熔钎焊性能的影响[J].电焊机,2024,54(7):76-82,7.基金项目
武汉市科技计划项目(2022013202025167) （2022013202025167）
