21/4Cr-1Mo钢焊后产生焊接裂纹的原因分析及其返修措施  

Cause Analyses and Repair Measures about Weld Crack Produced after Welding on 21/4 Cr 1Mo Steel

作　　者：张良成[1] 张仁刚[1] 尹崭新[1] 王纯洁 

机构地区：[1]上海锅炉厂有限公司,上海200245 [2]上海希科水电设备有限公司,上海200240

出　　处：《锅炉技术》2002年第3期21-25,32,共6页Boiler Technology

摘　　要：针对 2 1 /4Cr-1Mo钢焊接后产生裂纹的原因进行了分析 ,结果表明 ,产生裂纹的主要原因是氢浓度过高而引起的氢致延迟裂纹 。The essay analyses the cause of weld crack produced after welding on 2 1/4 Cr-1Mo steel. The cause is the over high density of hydrogen, which results in producing hydrogen triggered delay crack. According to the characteristic of the product, the essay after suitable repair measures.

关 键 词：21/4Cr-1Mo钢 焊接裂纹 返修 

分 类 号：TG457.11[金属学及工艺—焊接]