厚板窄间隙焊接技术研究进展  

Research status of narrow gap welding for thick plates

作　　者：林三宝[1] 蔡笑宇 季相儒 

机构地区：[1]哈尔滨工业大学先进焊接与连接国家重点实验室,黑龙江哈尔滨150001

出　　处：《机械制造文摘（焊接分册）》2017年第5期33-38,共6页Welding Digest of Machinery Manufacturing

基　　金：国家自然科学基金(51775139);国家科技支撑计划项目(2015BAF01B00)

摘　　要：针对大厚板,常用的焊接方法需要开大角度坡口,焊接时采用多层多道焊,焊件往往内部应力较大,变形严重。而窄间隙焊接采用窄而深的坡口,在厚板焊接中具有效率高等优势。针对当前常用的厚板窄间隙焊接技术,本文中主要总结了国内近几年在激光窄间隙焊接,电弧窄间隙焊接和超窄间隙焊接三个方面的研究进展。For the welding of thick plates , a wide groove and multi-layer welding technology internal stress in the workpiece is large and deformation is serious. In narrow gap welding , the groove is deepand narrow, so it has some special advantages in the welding process for thick plates , such as high efficient. Inthis paper, the domestic narrowgap laser welding, naa-〇 w gap arc welding and ultra- naa-ow gap welding tech-niques in recent years are summarized.

关 键 词：窄间隙焊接 激光焊接 电弧焊接 

分 类 号：TG44[金属学及工艺—焊接]