解析sht3520-2015石油化工铬钼钢焊接规范

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1、ICS25.160P72备案号:J2096-2015中华人民共和国石油化工行业标准SH/T3520-2015代替SH!T3520-2004石油化工错铝钢焊接规范Weldingspecificationofchromemolybdenumsteelinpetrochemicalindustry2015-04-30发布2015-05-01实施中华人民共和国工业和信息化部发布SH/T3520-2015目次前言………................................................

2、........................................................……….III123456789范规术才123焊焊JJ焊J23412返焊田r…明以…脚材接旧时…文……脱…恻瞬…峰淀…肮料………查测…理性削四盼…-i14础酬仲→钢焊叫叫树坡组缸一焊预焊酣外无修民(((用文件…叮，中吁中。白44444667777件80队录录录规HH……接9Hq中工……………用…………………惊和录…艺……评……………唯…………………国制国…定……………备…………………内词内qu

3、quququA34AAbr叫对去即制归接非蜘拥…忱酬酬酬刷刷HH位"…选…HHU手""………吐PD户uOPOρhunhU………HHUH))叶i山附附附本附…惜即向陆……化批知……叶iQJQd1iABC问叶咐A/铝时即如非吨明"唰胁焊号料圳学用品成"分分…及-AK--L功…制学…盯…性…AH匕已口各夕-At门，中。中。中川4范条户。呵，dSH/T3520-一2015ContentsForeword.......................................................

4、.........................................................…..III1Scope'………………………………………………………………………………………..……………12Normativereferences'……………………………………………………………………………………..13Termsanddefinitions'……………………………………………………………..………………………24Material…………………………………………………………

5、…………………………………………24.1Generalrequirements'………………………………………………………………………………..24.2Steel……………………………………………………………………………………………………24.3Weldingmaterial'"……………………………………………………………………………………25WelderandWeldingprocedurequalifications……………………………………………………………36Weldingproparati

6、on……………………………………………………………………………….........36.1Bevelprocessing'……………………………………………………………………………………"36.2Jointassemblyandpositioning………………………………………………………………………37Weldingprocedure'…..……………………………………………………………………………………47.1Generalrequirements'………………………………………………………………

7、………………..47.2Weldingmaterialselectionandpreparation…………………………………………………………47.3Preheat.…………..……………………………………………………………………………………57.4Weld…………………………………………………………………………………………………68Weldinginspection'…………………………………………………………………………..……………68.1Visualexaminatioll"………………………

8、…………………………………………………………..68.2NDT…………………………………………………………………………………………………69Weldrepair………………………………………………………………………………………………710PWHT"………………………………………………………………………………………………….7AnnexACInformative)Chemicalcompositionandmechanicalproperti