2.25Cr-1Mo钢厚壁容器环缝横向裂纹的研究  

The Side Crack Research of the Circumferential Welds of the Thick Shell Vessel of 2.25Cr-1Mo

作　　者：刘丽莉 毕晓敏[2] 蔡玲[2] 

机构地区：[1]甘肃省锅炉压力容器检验研究所,兰州730020 [2]兰州石油化工机器总厂,兰州730050

出　　处：《电焊机》1999年第12期25-28,共4页Electric Welding Machine

基　　金：国家教委博士点基金资助项目

摘　　要：用 2 2 5Cr 1Mo钢制造的加氢反应器 ,筒体环缝由于工艺原因 ,出现了垂直于焊缝方向的横向裂纹 ,其特点是埋伏在焊缝表面下 1 5～ 2 5mm ,超声波探伤不易发现 ,因此危害性较大。本文阐述了产生横向裂纹的情况 ,并通过焊接接头试验 ,裂纹解剖分析 ,对今后铬钼钢压力容器生产中如何克服和防止产生横向裂纹提出了一些建议。The hydroreactor made of 2 25Cr 1Mo steel,the side cracks occurred on the circumferential welds of the shell,which is vertical to the weld direction.The feature is that the cracks are not easy to be found through ultrasonic detection since they are under the welds of 15 25mm,so they have a lot of dangers to product.This arcticle has expounded the conditions of the cracks occurrence,and by means of weld bond test and the analysis of the cracking,provided some proposals of avoiding the cracks in the pressure vessels of Cr and Mo steel production in future.

关 键 词：环缝 横向裂纹 加氢反应器 焊接 裂纹 

分 类 号：TE966.06[石油与天然气工程—石油机械设备] TG404[金属学及工艺—焊接]