作者:标准资料网 时间:2024-04-29 09:08:23   浏览:9858   来源:标准资料网

【英文标准名称】:StandardReferenceRadiographsforHigh-StrengthCopper-BaseandNickel-CopperAlloyCastings
【原文标准名称】:高强度铜基和镍铜合金铸件标准参考射线照片
【标准号】:ASTME272-2010
【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】:aluminumbronze;castingdiscontinuities;copper;copper-nickel;gammaray;manganesebronze;manganese-nickel-aluminumbronze;nickel-aluminum;nickel-copper;referenceradiographs;X-ray;Copperalloycastings;Diffractionmottling;High-stren
【摘要】:Referenceradiographsforhigh-strengthcopper-baseandnickel-copperalloycastingsareintendedtobeusedasaguidetotherecognitionofcommondiscontinuitiesandtheirdifferentiationbothastotypeandseveritylevel.Discontinuitytypesmostcommontothesealloysareillustrated.Otherdiscontinuitytypessuchashottears,cracksandunfusedchapletsareillustratedinapplicableReferenceRadiographsE186,E192,andE446.Forreference,descriptionsoftypicalcastingdefectsandcorrespondingradiographicindicationtypesarecontainedinSection5.Purchasersandsuppliersmay,bymutualagreement,selectparticulardiscontinuityclasses(see1.2)toserveasstandardsrepresentingminimumlevelsofacceptability.(SeeSections7and8.)Referenceradiographsrepresentedbythisstandardmaybeused,asagreeduponinapurchasersupplieragreement,forenergylevels,thicknessesorbothoutsidetherangeofthisstandardwhendeterminedapplicableforthecastingserviceapplication.ProceduresforevaluationofproductionradiographsusingapplicablereferenceradiographsofthisstandardareprescribedinSection9;however,theremaybemanufacturing-purchaserissuesinvolvingspecificcastingserviceapplicationswhereitmaybeappropriatetomodifyoraltersuchrequirements.Wheresuchmodificationsmaybeappropriateforthecastingapplication,allsuchchangesshallbecalled-outinthepurchasersupplieragreementorcontractualdocument.Section10addressespurchasersupplierrequisiteswhereweldrepairsmayberequired.ThefollowingASTMspecificationsillustratealloysthatmaybeusedwiththesestandards.Itisintendedthatthesereferenceradiographsalsoapplytorelatedgovernmentandcommercialmaterialspecifications.1.1Thesereferenceradiographsillustratevariouscategories,types,andseveritylevelsofdiscontinuitiesoccurringinhigh-strengthcopper-base,nickel-copper,andrelatedalloycastings.ThereferenceradiographfilmsareanadjuncttothisdocumentandmustbepurchasedseparatelyfromASTMInternational,ifneeded(see2.3).Categoriesandseveritylevelsforeachdiscontinuitytyperepresentedbythesereferenceradiographsaredescribedin1.2.Note18212;ThebasisofapplicationforthesereferenceradiographsrequiresapriorpurchasersupplieragreementofradiographicexaminationattributesandclassificationcriteriondescribedinSections4,7,8,9,and10ofthisstandard.1.2Thesereferenceradiographsconsistofforty-five5by7-in.(127by178-mm)nominalsizereproductions(twentymadefrom1-in.(25.4-mm)platecastingsexposedwithlowvoltageX-raysforthicknessesuptoandincluding2in.)andtwenty-fivemadefrom3-in.(76-mm)platecastingsexposedwith2MVX-raysorCobalt60isotopeforthicknessesgreaterthan2in.uptoandincluding6in.Unlessotherwisespecifiedinapurchasersupplieragreement(see1.1),eachdiscontinuitycategoryisforcomparisononlywithproductionradiographsproducedwithradiationenergylevelswithinthethicknessrangecoveredbythecategory.Thesereferenceradiographsillustratediscontinuitiesinsand-castmanganese-nickel-aluminumbronze-alloyplatesandarerepresentativeofthosefoundinnarrowfreezingrange(formerlyx201C;highshrinkagex201D;),high-strengthcopperandnickel-copperalloys.Followingisalistofdiscontinuitycategories,typesandseveritylevelsfortheadjunctreferenceradiographsofthisstandard(seeNote2):
【中国标准分类号】:H62
【国际标准分类号】:77_150_40
【页数】:5P.;A4
【正文语种】:英语