中国机械工程2011，Vol.22Issue(13)：1615-1619,5.
超薄钛壳激光焊接工艺参数对焊缝成形影响研究
Study on Effects of Process Parameters on Laser Seal Welding for Ultra Thin Titanium Shell
摘要
Abstract
Due to the effects of manufacture techniques on specimen and heat distortion during welding,seal welding for ultra thin titanium shell is quite difficult.An Nd： YAG pulse laser system was used to seal 0.3mm thick medical titanium implant herein.The effects of process parameters including pulse wave shape,laser power,welding speed,defocusing amount,and shielding gas were investigated.Besides,tests of micro-hardness and micro-structure analyses on overlapped weld joint were discussed.Finally,parts of the welded specimens were analyzed by helium mass spectrum leakage detector.The experimental results show that flat wave shape is optimum choice for seal welding,reasonable collocation of laser power and welding speed guarantees the welding quality,and the weld bead color is good when the shielding gas flow rate is at 15 L/minute.The welding specification for sealing ultra thin titanium shell was confirmed through a serial of technique experiments.It provides reference for engineering applications and optimization of the seal welding further.关键词
激光密封焊接/超薄钛壳/工艺参数/焊缝成形Key words
laser seal welding/ultra thin titanium shell/process parameter/bead formation分类
矿业与冶金引用本文复制引用
倪先胜,周正干,文雄伟..超薄钛壳激光焊接工艺参数对焊缝成形影响研究[J].中国机械工程,2011,22(13):1615-1619,5.基金项目
国家科技支撑计划项目（2006BAI03A18) （）
北京市教育委员会共建项目专项资助 （）
