加氢裂化高压不锈钢管道焊缝裂纹分析及处理

2009374200937420093742009374200937420093742009374200937420093742009374、、φ530×541PT91φ27×5φ530×54DN300-DN500TP32148mm1.7m、、、730mm71m718。1、1.1TP321。、。DN≥50mmTP321H0Cr20Ni10Nb+A132。、、。PT100％。。。1.2、、、、、。PTUT。DN4004mmPT、UT、RTDN402mmPT。。。RT。PT。PT、1968-1991。。。CrackAnalysisandDisposalfortheWeldofHigh-PressureStainlessSteelPipeinHydrocrackingDINGWen-sheng(JinlingPetrochemicalCompany,JiangsuNanjing210033,China)Abstract:Thehydrogenationpipewouldweldcrackafterrunningforsometimeashightemperatureandhighpressure,andthephenomenonwasrare.Theweldcrackbecauseofhigh-temperatureandhigh-pressurehydrogenationwasdescribed,andfocusedonthecheckingmethodofthecrack,crackcauseandrepairedcheckingmethod.Somesuggestionsofavoidingheatcrackoftheweldofhigh-pressurestainlesssteelpipewereputforward.Keywords:high-temperatureandhigh-pressure;hydrogenationpipe;weldcrack;weldrepair2100381P22-07176··2009374200937420093742009374200937420093742009374200937420093742009374UT、RT。390℃5h。。、、。[Cl-]。。12h。。1.3、、PT7PT711PTΦ508×50300mm32mm。150100%UT。100%362600h1882。、。2,2。。100℃。。。。。。。[1]。[1]S、P、Sn、Sb、B、Nb。[1]3PTUT100%γγPT300mm32mm。PT。。。。4PT9123687。PTRTUT。。。,12h。[1].22[M]．20018.2P22-07+δ。177··