气化炉轴套管法兰螺纹孔的补焊  

Repair Welding Procedure for Flange Screwed Holes of Pipe Spreaders of Fluidized Gas Producer

作　　者：张亚奇[1] 徐兵[1] 马鸣[1] 

机构地区：[1]哈尔滨锅炉厂有限责任公司,黑龙江哈尔滨150046

出　　处：《压力容器》2014年第8期77-79,共3页Pressure Vessel Technology

摘　　要：为了修补气化炉轴套管法兰的螺纹孔,制定了合理的焊接工艺,采用了特殊的操作手法,补焊焊缝经探伤无夹渣、未熔合,并经中间热处理,释放焊接应力后再重新钻孔。由于补焊的螺纹孔数量较多、焊接应力较大,补焊后轴套管内径缩小0.5~0.6 mm,经检测螺纹孔尺寸仍能满足图样要求。In order to repair the flange screwed holes of pipe spreader of fluidized gas producer,proper welding procedure and operation method were confirmed,and there were not any slag or lack of fusion in those repaired seams. After ISR with welding stress released,because of a number of screwed holes and welding stress,the inner diameter of pipe spreaders become smaller 0. 5 ~ 0. 6 mm than before,but the dimension of redrilling screwed holes is agreement to design drawing.

关 键 词：气化炉 螺纹孔 补焊 

分 类 号：TG455[金属学及工艺—焊接]