工艺参数对高强钢窄间隙激光填丝焊鼓胀区影响  

Influence of Process Parameters on Bulging Region of High Strength Steel in Narrow Gap Laser Welding with Wire Filler

作　　者：韩鹏薄 黄瑞生 孙静涛 滕彬 曹浩 武震东 HAN Pengbo;HUANG Ruisheng;SUN Jingtao;TENG Bin;CAO Hao;WU Zhendong(Harbin Welding Institute Limited Company,Harbin,150028,China)

机构地区：[1]哈尔滨焊接研究院有限公司,黑龙江哈尔滨150028

出　　处：《电焊机》2022年第10期107-113,共7页Electric Welding Machine

基　　金：国防科技基础加强计划;黑龙江省省级资金资助项目(GX18A007);黑龙江省头雁行动计划——能源装备先进焊接技术创新团队资助。

摘　　要：研究了主要工艺参数对高强钢窄间隙激光填丝焊鼓胀区的影响。通过测量不同工艺条件下焊缝鼓胀区的宽度W_(max)及其距焊缝表面的距离d,建立了主要焊接参数与鼓胀区尺寸之间的关系。研究结果表明焊丝与母材吸收能量的比例大小是影响鼓胀区宽度及位置主要因素,减小激光功率、增加焊速和送丝速度能够减小鼓胀区。进一步提出了不同鼓胀角β<30°与β>60°的工艺区间,并且减小鼓胀角β是获得大深宽比条件下无凝固裂纹焊缝的有效方法。The influence of the main process parameters on the bulging region of high-strength steel in narrow gap laser welding with filler wire was studied. By measuring the width W_(max)of the weld bulging region and its distance d from the weld surface under different process conditions, the relationship between the main welding parameters and the bulging region size was established. The research results show that the ratio of the energy absorbed by the welding wire to the base metal is the main factor affecting the width and position of the bulging region. Reducing the laser power, increasing the welding speed and wire feeding can reduce the bulging region. The process range of different bulging angles β<30° and >60°is further proposed, and reducing the bulging angle β is an effective method to obtain solidification-free crack-free welds under the condition of large aspect ratio.

关 键 词：窄间隙激光填丝焊 高强钢 凝固裂纹 鼓胀区 

分 类 号：TG456.7[金属学及工艺—焊接]