******Co.,Ltd.焊缝检验规程3Rev.:0Page:1of7Title:PROCEDUREFORMAGNETICPARTICLEEXAMINATIONPROCEDUREFORMAGNETICPARTICLEEXAMINATION磁粉检验操作工艺规程CONTROLLED在控本□UNCONTROLLED非在控本□COPYNO副本编号：PREPAREDBY编制：DATE日期：REVIEWEDBY审核：DATE日期：APPROVEDBY批准：DATE日期：******Co.,Ltd.焊缝检验规程3Rev.:0Page:2of7Title:PROCEDUREFORMAGNETICPARTICLEEXAMINATIONDEMONSTRATIONCERTIFICATIONThisistocertifythatthisprocedurehasbeendemonstratedonatestspecimenwithknowndefectstothesatisfactionoftheAuthorizedInspectoraccordingtoT-150ofASMECodeSectionV,asrequiredbyAppendix6ofSectionⅧDiv.1.TestSpecimenNo.:Demo.ReportNo.:NDELevelⅢ:AI:******Co.,Ltd.焊缝检验规程3Rev.:0Page:3of7Title:PROCEDUREFORMAGNETICPARTICLEEXAMINATION1.General1.1ThisprocedureisappliedtothemagneticparticleexaminationofferromagneticmaterialsandweldsforASMECodeitems.1.2Themagneticparticleexaminationmethodissuitablefordetectingcracksandotherdiscontinuitiesonornearthesurfaceinferromagneticmaterials.1.3Thisprocedureisappliedtowetcontinuousmagnetizationbyyoke,whichshallonlybeappliedtodetectdiscontinuitiesthatareopentothesurfaceofthepart.1.4ThisprocedureshallbedemonstratedtothesatisfactionoftheAIpriortoimplementation.1.概述1.1本规程适用于ASME规范产品铁磁性材料和焊缝的磁粉检验。1.2磁粉检验方法适用于在铁磁性材料表面或其附近探测裂纹和其它不均匀性缺陷。1.3本规程适用于磁轭湿粉连续磁化法技术。此法仅适用于检出工件表面开口缺陷。1.4本规程在执行之前须通过演示，使AI审查满意。2.Personnel2.1TheNDEpersonnelwhoengageinmagneticparticleexaminationshallbequalifiedandcertifiedaccordingto******Co.,Ltd.’s“WrittenPracticeforNDEPersonnelTraining,Examination,Qualification&Certification”(No.:QCD-011).3.DescriptionofMethod3.1Inprinciple,themagneticparticleexaminationmethodinvolvesmagnetizinganareatobeexamined,andapplyingferromagneticparticlestothesurface.Theparticleswillformpattermsonthesurfacewherecracksorotherdiscontinutiescausedistortionsinthenormalmagneticfield.Thesepatternsareusuallycharacteristicofthetypeofdiscontinuitythatisdetected.3.2Thesensitivityofthemagneticparticleexaminationisgreatestforsurfacediscontinuitiesanddiminishesrapidlywithincreasingdepthofdiscontinuitiesbelowthesurface.Therefore,thismethodcanonlybeusedfordetectingthediscontinuitiesonornearthesurfaceofthematerialorpartstobetested.4.MagnetizationEquipmentandCalibration4.1TheMTequipmenttobeusedisYoke,withTypeCDX-4.4.2CalibrationofEquipment4.2.1Frequencyofcalibration:EachMagnetizingEquipmentwithanammetershallbecalibratedatleastonceayear，orwhenevertheequipmenthasbeensubjectedtoamajorelectricrepair,periodicoverhaulordamage.Ifequipmenthasnotbeeninuseforayearormore,calibratioonshallbedonepriortofirstuse.4.2.2CalibrationforliftingpoweroftheYokeTheliftingpowerwillbecalibratedwiththemethodsofliftingastandardweightcake.Eachalternating-currentelectromagneticyokeshallhavealiftingpowerofatleast10lb(44N).atthemaximumpolespacing.Eachdirect-currentelectromagneticyokeshallhavealiftingpowerofatleast40lb(177N).atthemaximumpolespacing.5.ExaminationMedium5.1Theexaminationmediumshallbethefinelydivided2.人员2.1从事磁粉检验的NDE人员必须是根据南京宝色钛业有限公司<>(资料号：QCD-011)进行考试和资格任命的合格人员。3.方法综述3.1原则上，磁粉检验方法是指在工件受检区域表面施加铁磁粉，裂纹或其它缺陷会导致正常磁场畸变，使表面上的磁粉形成一定图形，这些图形通常...
