摘要
在对δ=20mm、0Cr18Ni9的压力容器焊接过程中,根据焊接工作量选择采用埋弧焊,对最后一道焊缝采用手工焊+埋弧焊的方法进行焊接。焊接完毕后焊缝经100%RTⅡ探伤,一次焊接合格率为85%,归类统计和整理焊缝中经过探伤发现的各种焊接缺陷,并分析了焊接缺陷产生的原因,制定出合适的返修工艺,总结出中厚板不锈钢在埋弧焊过程中减少焊接缺陷的预防措施。应用在其余三台相同压力容器的制造过程中,焊接质量得到了有效提高,一次合格率达到95%以上,效果明显。
While welding the pressure vessel（ δ=20 mm,OCr18Ni9）,choose from the submerged arc welding, and the final weld using SMAW＋SAW aecording to the welding work.By 100% RT II testing,the pass rates is 85%,after testing found that after a weld in a variety of＇ welding defects were classified statistics and compiling,and testing the process of testing out the reasons for the welding defect analysis,work out a suitable repair teehnique for repairing and summed up in the submerged arc welding stainless steel plate in the process of the preventive measurements welding defects.The remaining three applications in the pressure vessel of the same manufacturing process, the quality of welding have been effectively increased, a passing rate was 95%, and achieved obvious results.
出处
《电焊机》
北大核心
2009年第4期144-147,共4页
Electric Welding Machine
关键词
不锈钢
埋弧焊
缺陷分析
返修
预防措施
stainless steel
SAW
defect analysis
repair
preventive measurement
