中国激光, 2004, 31 (2): 237, 网络出版: 2006-06-12
粉末冶金材料激光深熔焊接光致等离子体行为及控制
Study of Laser-Induced Plasma Behavior and Control During Laser Deep Penetration Welding of Powder Materials
粉末冶金 激光深熔焊 临界激光功率密度 光致等离子体 powder metallurgy laser deep penetration welding critical laser power density laser-induced plasma
摘要
采用LSM240型全自动CO2激光焊接机焊接粉末材料,研究不同粉末材料产生等离子体所需的临界激光功率.粉末配方为:Fe粉+15%羟基Fe粉,Co粉,Ni粉+15%羟基Ni粉三种试样.研究结果表明,Fe,Co,Ni三种试样在CO2激光作用下产生金属蒸气时的临界激光功率密度IC为ICFe>ICCo>ICNi;等离子体得以有效控制的下限临界气流量QS为QFeS<QCoS<QNiS.
Abstract
The critical laser power density to induce plasma for different powders is studied in this article by means of fully-automatic laser welding machine LSM240. The powder components are FFe+15%TFe, FCo and FNi+15%TNi. The results show that the critical laser power density (I_C) to create plasma under the radiation of CO_2 laser beam for the three kinds of PM materials is I_ CFe>I_ CCo>I_ CNi, and the low critical gas flux Q_S is QFeS
唐霞辉, 周毅, 李适民, 李家殚, 何艳艳. 粉末冶金材料激光深熔焊接光致等离子体行为及控制[J]. 中国激光, 2004, 31(2): 237. 唐霞辉, 周毅, 李适民, 李家殚, 何艳艳. Study of Laser-Induced Plasma Behavior and Control During Laser Deep Penetration Welding of Powder Materials[J]. Chinese Journal of Lasers, 2004, 31(2): 237.