钛合金激光焊接过程中气体保护问题的研究  

Research on Gas Shielding in Laser Welding of Titanium Alloys

作　　者：高宾[1] 邓琦林[1] 周春燕[1] 

机构地区：[1]上海交通大学机械动力与工程学院,上海200240

出　　处：《电加工与模具》2009年第5期44-49,共6页Electromachining & Mould

摘　　要：研究了钛合金焊接所存在的主要缺陷及引起缺陷的原因;分析了大气中的氢、氧、氮对焊缝质量的影响及钛合金激光焊接过程中气体保护的必要性;重点研究了气体保护装置的设计及其使用。根据钛合金焊接温度场模拟,选择了安全的温度区间,结合温度场的影响,分析了各工艺参数对焊接质量的影响。This study investigates common defects and reason for them of welding of titanium alloys. Analyze influence of hydrogen, oxygen and nitrogen on quality of welding and necessity of gas shielding in the laser welding of titanium alloys. Lay great emphasis on investigation on design and use of gas shielding device. Research temperature field simulation of welding of titanium and choose safe temperature range against gas pollution. Analyze influence of process parameters（ gas flow）on quality of welding according to temperature.

关 键 词：钛合金激光焊接 气体保护装置 温度场 气体流量 

分 类 号：TG456.7[金属学及工艺—焊接]