ASTM E709-2008 磁粒子检查标准指南

作者:标准资料网 时间:2024-05-21 19:32:53  浏览:9640   来源:标准资料网

【英文标准名称】:StandardGuideforMagneticParticleTesting
【原文标准名称】:磁粒子检查标准指南
【标准号】:ASTME709-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.03
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:dye;evaluation;examination;fluorescent;inspection;magneticparticle;nondestructive;testing;Billets;Blooms;Castings;Cracking;Defects--metals/alloys;Discontinuities--metals/alloys;Drymagneticparticleinspection;Ferromagneticmaterial
【摘要】:Themagneticparticlemethodofnondestructivetestingindicatesthepresenceofsurfaceandnear-surfacediscontinuitiesinmaterialsthatcanbemagnetized(ferromagnetic).Thismethodcanbeusedforproductionexaminationofparts/componentsorstructuresandforfieldapplicationswhereportabilityofequipmentandaccessibilitytotheareatobeexaminedarefactors.Theabilityofthemethodtofindsmalldiscontinuitiescanbeenhancedbyusingfluorescentparticlessuspendedinasuitablevehicleandbyintroducingamagneticfieldoftheproperstrengthwhoseorientationisascloseaspossibleto90x00B0;tothedirectionofthesuspecteddiscontinuity(see4.3.2).Asmoothersurfaceorapulsedcurrentimprovesmobilityofthemagneticparticlesundertheinfluenceofthemagneticfieldtocollectonthesurfacewheremagneticfluxleakageoccurs.1.1Thisguidedescribestechniquesforbothdryandwetmagneticparticletesting,anondestructivemethodfordetectingcracksandotherdiscontinuitiesatornearthesurfaceinferromagneticmaterials.Magneticparticletestingmaybeappliedtorawmaterial,semifinishedmaterial(billets,blooms,castings,andforgings),finishedmaterialandwelds,regardlessofheattreatmentorlackthereof.Itisusefulforpreventivemaintenancetesting.1.1.1Thisguideisintendedasareferencetoaidinthepreparationofspecifications/standards,proceduresandtechniques.1.2Thisguideisalsoareferencethatmaybeusedasfollows:1.2.1Toestablishameansbywhichmagneticparticletesting,proceduresrecommendedorrequiredbyindividualorganizations,canbereviewedtoevaluatetheirapplicabilityandcompleteness.1.2.2Toaidintheorganizationofthefacilitiesandpersonnelconcernedinmagneticparticletesting.1.2.3Toaidinthepreparationofproceduresdealingwiththeexaminationofmaterialsandparts.Thisguidedescribesmagneticparticletestingtechniquesthatarerecommendedforagreatvarietyofsizesandshapesofferromagneticmaterialsandwidelyvaryingexaminationrequirements.Sincetherearemanyacceptabledifferencesinbothprocedureandtechnique,theexplicitrequirementsshouldbecoveredbyawrittenprocedure(seeSection21).1.3Thisguidedoesnotindicate,suggest,orspecifyacceptancestandardsforparts/piecesexaminedbythesetechniques.Itshouldbepointedout,however,thatafterindicationshavebeenproduced,theymustbeinterpretedorclassifiedandthenevaluated.Forthispurposethereshouldbeaseparatecode,specification,oraspecificagreementtodefinethetype,size,location,degreeofalignmentandspacing,areaconcentration,andorientationofindicationsthatareunacceptableinaspecificpartversusthosewhichneednotberemovedbeforepartacceptance.Conditionswherereworkorrepairisnotpermittedshouldbespecified.1.4Thisguidedescribestheuseofthefollowingmagneticparticlemethodtechniques.1.4.1Drymagneticpowder(see8.4),1.4.2Wetmagneticparticle(see8.5),1.4.3Magneticslurry/paintmagneticparticle(see8.5.7),and1.4.4Polymermagneticparticle(see8.5.8).1.5PersonnelQualification8212;PersonnelperformingexaminationsinaccordancewiththisguideshouldbequalifiedandcertifiedinaccordancewithASNTRecommendedPracticeNo.SNT-TC-1A,ANSI/ASNTStandardCP-189,NAS410,orasspecifiedinthecontractorpurchaseorder.1.6NondestructiveTestingAgency8212;IfanondestructivetestingagencyasdescribedinP......
【中国标准分类号】:H26
【国际标准分类号】:77_040_20
【页数】:41P.;A4
【正文语种】:英语