大厚度H型牛腿在圆管柱上的CO_2焊  

CO_2 arc welding of thick H-shaped corbel in tubular columns

作　　者：赵巧良[1] 周永坤[1] 江舸 张锋 

机构地区：[1]浙江工业职业技术学院,浙江绍兴312000 [2]浙江越宫钢结构有限公司,浙江绍兴312000

出　　处：《兵器材料科学与工程》2015年第4期125-127,共3页Ordnance Material Science and Engineering

摘　　要：针对某大厚度H型牛腿在圆管柱上焊后出现的层状撕裂现象,从改善焊接应力分布入手,采用低氢型CO2焊,使用Z向钢制作牛腿,运用低组配的焊接材料,选择小规范、多层多道焊,实施交叉对称焊法,能减小焊接应力,改善接头拘束应力,取得圆满焊接效果。According to lamellar tearing phenomenon of thick H-shaped corbel in tubular columns after welding,the following measures were adopted to improve welding stress distribution,such as,using low hydrogen type CO2,and using Z-direction steel as corbel material,welding with low group materials,implementing with multi-pass welding and cross symmetric welding method. The results show that the joint restraint stress is improved and the welding effect is satisfied.

关 键 词：H型 牛腿 Q345B-Z15 二氧化碳气体保护焊 层状撕裂 

分 类 号：TG444.77[金属学及工艺—焊接] TG404