激光技术2011，Vol.35Issue(5)：577-581,5.DOI:10.3969/j.issn.1001-3806.2011.05.001
非熔透激光搭接焊薄钢板的试验研究
Research of partial penetrated laser overlap-welding of thin steel sheet
摘要
Abstract
In order to study the welding quality of partial penetrated laser overlap-welding of thin steel sheet, SUS304 austenitic stainless steel and SPCC cold-rolled steel sheet were welded with fiber laser and CO2 laser. And the main factors affecting the partial penetrated laser welding were analyzed. The micro-structure and the mechanical properties of the weld were measured, finally, the effects of main welding parameters, including laser power, welding speed, defocus distance, pulse frequency and duty ratio, on weld surface quality and performance were obtained. The results show that under the proper welding condition, the weld topography is uniform and continuous, the strength of weld is 50% higher than that of base metal, and its micro-hardness of fusion zone is higher than that of base metal.关键词
激光技术/激光焊接/非熔透/脉冲调制/薄钢板/工艺参量/机械性能Key words
laser technique/ laser welding/ partial penetration/ pulsed modulation/ thin steel sheet/ technological parameters/ mechanical properties分类
通用工业技术引用本文复制引用
陈根余,陈明,李时春,谭立鹏..非熔透激光搭接焊薄钢板的试验研究[J].激光技术,2011,35(5):577-581,5.基金项目
国家八六三高技术研究发展计划资助项目(2007AA042006) （2007AA042006）
工信部“高档数控机床与基础制造装备”科技重大专项资助项目(2009ZX04007-021) （2009ZX04007-021）
湖南大学汽车车身先进设计制造国家重点试验室自主课题资助项目(6107505) （6107505）
