汽油加氢二段反应器(R6401)缺陷分析  

Defect analysis for gasoline hydrogenation reactor(R6401) second stage

作　　者：刘庆龙[1] 刘玉东[1] 李世杰[2] 单旭光[3] 赵旭蕊[4] 

机构地区：[1]中国石油吉林石化公司聚乙烯厂,吉林吉林132021 [2]中国石油吉林石化公司电子商务部,吉林吉林132021 [3]中国石油吉林石化公司炼油厂,吉林吉林132021 [4]中国石油吉林石化公司营销储运部,吉林吉林132022

出　　处：《化工科技》2008年第2期52-55,共4页Science & Technology in Chemical Industry

摘　　要：对中油吉林石化70万t/a乙烯装置汽油加氢二段反应器接管与筒体焊接接头的缺陷进行了详细的分析。阐明了缺陷的产生是由于在焊接过程中焊缝熔合区内形成马氏体,增碳层并伴有δ-铁素体的分解而使熔合区内及焊缝处的材质脆化;由于选用焊接材料的错误,产生较高的焊接残余应力,致使焊缝开裂。进一步分析了焊缝产生马氏体,增碳层和δ-铁素体分解的根本原因。This article makes a detail analysis for the welding defect between gasoline hydrogenation reactor second stage and connection nozzle in ethylene plant . And it explains the reason to cause the defect,that is because of the martensite and carburet layer formed in the welding seam. And also δ-ferrolites is decomposed, this causes embrittlement of welding materials; because of the wrong material selection, this causes the higher residual stress to make the welding seam break. And it makes more analysis for the main reasons to form martensite and carburet layer and also the decompositin of δ-ferrolites.

关 键 词：裂纹 焊接 马氏体 

分 类 号：TE966[石油与天然气工程—石油机械设备]