激光功率对304不锈钢圆管焊缝成形及显微组织影响  

Effect of Laser Power on Weld Formation and Microstructure of 304 Stainless Steel Pipe

作　　者：刘瑞琳[1] 刘云祺 程乾[2] 门正兴[1] 蔡昌勇[1] 马亚鑫 Liu Ruilin;Liu Yunqi;Cheng Qian;Men Zhengxing;Cai Changyong;Ma Yaxin

机构地区：[1]成都航空职业技术学院机电工程学院,四川610010 [2]西南交通大学材料科学与工程学院,四川610031

出　　处：《大型铸锻件》2020年第4期9-10,26,共3页Heavy Casting and Forging

摘　　要：采用光纤激光器进行了1.5 mm壁厚304不锈钢圆管的对接焊接。研究了激光功率对焊缝成型和组织的影响。通过对焊缝表面、截面形貌和组织分析,得到了较好的焊接工艺参数。结果表明,当激光功率为2400 W时,焊缝成型良好,焊缝焊透。焊缝组织为典型的激光重熔后凝固组织,热影响区窄。The butt welding of 304 stainless steel pipes with 1.5 mm thickness has been taken by fiber laser.The effect of laser power on weld formation and microstructure has been studied.Through the analysis of weld surface,section morphology and microstructure,good welding process parameters have been obtained.The results show that when the laser power is 2400 W,the weld is formed well and penetrated completely.The weld microstructure is typical solidified microstructure after laser remelting,and the heat affected zone is narrow.

关 键 词：304不锈钢圆管 激光焊 焊缝成型 焊缝组织 

分 类 号：TG456[金属学及工艺—焊接]