激光技术2012，Vol.36Issue(6)：780-782,3.DOI:10.3969/j.issn.1001-3806.2012.06.017
5052铝合金CO2激光-MIG复合焊接气孔特性分析
Analysis of porosity characteristics of 5052 aluminum alloy welded by hybrid CO2 laser-MIG welding
摘要
Abstract
Hybrid CO2 laser-metal inertia gas(MIG) welding is an efficient and fast welding method,however, porosity is prone to produce when welding aluminum alloy. In order to analyze the porosity characteristics of aluminum alloy in medium thickness by means of hybrid CO2 laser-MIG welding, 10mm thick 5052 aluminum alloy was welded by means of bead weld. Theoretical analysis and experimental verification was carried out. The results show that the heat source space and the back protection cushion block influence the porosity obviously. The porosity rate is minimum when the heat source spacing is 2mm ～ 3mm. Porosity can be effectively suppressed by the back protection of cushion block.关键词
激光技术/气孔/CO2激光/热源间距/复合焊接/中厚度铝合金Key words
laser technique/porosity/CO2 laser/heat source spacing/hybrid welding/ aluminum alloys in medium thickness分类
矿业与冶金引用本文复制引用
马志华,陈东高,李娜,谭兵..5052铝合金CO2激光-MIG复合焊接气孔特性分析[J].激光技术,2012,36(6):780-782,3.基金项目
国家八六三高新技术研究发展计划资助项目(2009AA03Z517) （2009AA03Z517）
宁波市自然科学基金资助项目(201001A6006004) （201001A6006004）
