MIL-C-85717 (NOTICE 1), MILITARY SPECIFICATION: CARTRIDGE, 20 MILLIMETER, SEMI-ARMOR PIERCING HIGH EXPLOSIVE INCENDIARY, PGU-28/B (30 SEP 1997) [NO S/S DOCUMENT]., This notice should be filed in front of MIL-C-85717(AS), dated 12 August 1986, and Amendment2, dated 23 September 1993.MIL-C-85717(AS) is inactive for new design and is no longer used, except for replacementpurposes.【英文标准名称】:StandardReferenceRadiographsforSteelCastingsUpto2in.(50.8mm)inThickness
【原文标准名称】:厚度不超过2英寸(50.8毫米)的钢铸件的标准参考射线照片
【标准号】:ASTME446-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:E07.02
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:discontinuityclassificationcriterion;gammaray;referenceradiographs;steelcastings;x-ray;Referenceradiographs--steelcastings;Steelcastings(referenceradiographs)
【摘要】:Gradedreferenceradiographsareintendedtoprovideaguideenablingrecognitionofspecificcastingdiscontinuitytypesandrelativeseveritylevelsthatmaybeencounteredduringtypicalfabricationprocesses.Referenceradiographscontainingungradeddiscontinuitiesareprovidedasaguideforrecognitionofaspecificcastingdiscontinuitytypewhereseveritylevelsarenotneeded.Thesereferenceradiographsareintendedasabasisfromwhichmanufacturersandpurchasersmay,bymutualagreement,selectparticulardiscontinuityclassestoserveasstandardsrepresentingminimumlevelsofacceptability(seeSections6and7).Referenceradiographsrepresentedbythisstandardmaybeused,asagreeduponinapurchasersupplieragreement,forenergylevels,thicknessesorbothoutsidetherangeofthisstandardwhendeterminedapplicableforthecastingserviceapplication.SeveritylevelsofsimilardiscontinuitycategoriesandenergylevelrangeofE186referenceradiographsmayalternativelybeused,asdeterminedappropriateforthecastingserviceapplication,ifsoagreeduponinthepurchasersupplieragreement(seeNote2and5.1).ProceduresforevaluationofproductionradiographsusingapplicablereferenceradiographsofthisstandardareprescribedinSection8;however,theremaybemanufacturing-purchaserissuesinvolvingspecificcastingserviceapplicationswhereitmaybeappropriatetomodifyoraltersuchrequirements.Wheresuchmodificationsmaybeappropriateforthecastingapplication,allsuchchangesshallbespecificallycalled-outinthepurchasersupplieragreementorcontractualdocument.Section9addressespurchasersupplierrequisitesforwhereweldrepairsmayberequired.1.1Thesereferenceradiographsillustratevariouscategories,types,andseveritylevelsofdiscontinuitiesoccurringinsteelcastingsthathavesectionthicknessesupto2in.(50.8mm)(seeNote2).ThereferenceradiographfilmsareanadjuncttothisstandardandmustbepurchasedseparatelyfromASTMInternational,ifneeded(see2.2).Categoriesandseveritylevelsforeachdiscontinuitytyperepresentedbythesereferenceradiographsaredescribedin1.2.Note18212;ThebasisofapplicationforthesereferenceradiographsrequiresapriorpurchasersupplieragreementofradiographicexaminationattributesandclassificationcriterionasdescribedinSections4,6,and7ofthisstandard.Note28212;ReferenceradiographspreviouslyusedforthisthicknessrangecarriedthedesignationE71,butincludedanowrarelyusedgammasource,thatis,radium.ThecurrentdocumentisalsoupdatedbyinclusionofseveralrecognizedshrinkageorCcategoriesandbyeliminationofthecrackandhottearcategoriesexceptforoneexampleofeachofthesediscontinuitytypes.ReferenceradiographsforthickersectionsmaybefoundinReferenceRadiographstandardsE186andE280.ReferenceRadiographstandardsE446andE186providesomeoverlapofseveritylevelsforsimilardiscontinuitycategorieswithinthesameenergylevelrange(see4.2,5.1,and6.3).1.2Thesereferenceradiographsconsistofthreeseparatevolumes(seeNote3)asfollows:(I)mediumvoltage(nominal250-kV)Xrays.(II)1-MVXraysandIridium-192radiation,and(III)2-MVto4-MV......
【中国标准分类号】:J31
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语