304不锈钢激光焊接工艺及微观组织研究  

Study on Laser Welding Process and Microstructureof 304 Stainless steel

作　　者：王文军[1] 龚五堂[1] Wang Wenjun;Gong Wutang(Jingzhou Institute of Technology, J ingzhou, Hubei ,134000, China)

机构地区：[1]荆州职业技术学院,湖北荆州434000

出　　处：《应用激光》2018年第2期245-249,共5页Applied Laser

基　　金：国家发展和改革委员会地方经济司资助项目(项目编号:2014-46-33)

摘　　要：采用300 W准连续激光器对1.0mm厚的304不锈钢板进行拼接焊接试验,对激光焊接工艺参数进行正交优化试验,工艺参数为峰值功率3 000 W,脉冲宽度6ms,离焦量2mm时,焊接接头达到最佳的抗拉强度为723.6 MPa,高于母材。对焊缝微观组织进行分析,焊缝中心位置呈细小等轴晶。The 300 W quasi-continuous laser was used to perform a splicing welding test on 1.0 mm thick 304 stainless steel plate. Through the process parameters tested by orthogonal optimization, when the peak power was 3 000 W, pulse width was 6 ms, defocusing amount was 2 mm, the tensile strength of the joints reached 723.6 MPa, which was better than the base met-al. The microstructure of the weld was analyzed and the center of the weld was a fine equiaxed crystal.

关 键 词：304不锈钢 激光焊接 焊缝强度 微观组织 

分 类 号：TG456.7[金属学及工艺—焊接]