摘要
采用Nd∶YAG脉冲激光焊对4J42合金外壳进行了密封焊接。研究了激光输出功率、焊接速度、试件表面处理状态等工艺参数对焊接密封质量的影响。试验结果表明,激光输出功率达到一定值时,能够获得较好的密封焊缝;当激光功率一定时,焊接速度越高,密封成品率呈下降趋势;试件表面处理状态为化学镀镍时易形成裂纹,为电镀金层时焊缝成形美观,为电镀锡铋镀层时不易采用激光焊。
The 4J42 alloy shell were hermetically welded by pulsed Nd：YAG laser welding.The influence of the parameters such as laser output power, welding speed, surface treatment state of sample on the sealing quality was studied.The results show that good seal welds can be obtained when the laser output power is at a certain value.When the laser output power is constant, the rate of finished sealing products has a declining trend while the welding speed is increasing.The cracks forms easily when the surface treatment state of sample is nickel plating,the welds forms well when the state is electroplating of golden plating,and it＇s not easy to adopt laser welding when the state is electroplating of tin-Bi plating.
出处
《电焊机》
2008年第9期79-81,共3页
Electric Welding Machine
