不锈钢轨道车辆波纹板与侧顶板搭接接头焊接工艺试验研究  

Welding Process for Lap Joint Between Corrugated Plate and Side Roof Plate in Stainless Urban Transit Car

作　　者：韩晓辉[1] 高瑞全[1] 肖雪峰[1] 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266000

出　　处：《热加工工艺》2013年第7期169-170,174,共3页Hot Working Technology

摘　　要：为解决城轨车辆通长不锈钢薄板搭接焊缝容易产生塌陷、烧穿等焊接缺陷造成车辆漏雨的难题,通过对比试验优化其焊接工艺。采用准0.8 mm焊丝代替准1.0 mm焊丝可降低热输入量,控制填充量;结合焊缝结构特点,选择在车下位置进行焊接可降低操作难度,提高焊枪的可控性。通过一系列的工艺优化措施,实现了通长薄板焊缝稳定、连续和优质的焊接。To solve the problems that there were a lot of weld defects such as excessive penetration and bum-through incidentally on the lap joint of long corrugated plates in urban mass transit car, which can cause the leakage of rain, some contrastive tests were tried to optimize the welding process. The φb0.8mm weld wire was used to replace φb 1.0 mm weld wire to reduce welding heat input and control filling. The weld torch can be easily controlled and the operation gets easily if welder operates under the car body. By optimized process, the welding of long plate with steady weld seam, continuous and high quality can be realized.

关 键 词：波纹板 搭接接头 热输入量 烧穿 塌陷 

分 类 号：TG457.2[金属学及工艺—焊接]