QCT 258-1998标准（英文版）

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1、.QC/T258-1998PrefaceThisStandardsetsforthrequirementsandtestmethodforrigidityofsteelsedanwheelnutseatonthebasisofthedevelopmentofautomotiveindustryandtheactualneedsofwheelindustry.ThisStandardisputforwardedbytheStateBureauofMachineBuildingIndustry.ThisStandardisplacedunder

2、theadministrationoftheNationalAutomotiveStandardizationTechnicalCommittee.ThisStandardisdraftedbyChangchunAutomobileWheelResearchInstitute.MainDraftspersons:JiangCai,ZhangShijiang,YuMinhongApprovedbyStateBureauofMachineBuildingIndustryon1998-12-16Implementedasof1999-07-01A

3、utomobileIndustrialStandardofthePeople’sRepublicofChinaQC/T258-1998RequirementsandTestMethodsforRigidityofSteelSedanWheelNutSeat1.ScopeThisStandardsetsforthrequirementsandtestmethodsforrigidityofsteelsedanwheelnutseat.ThisStandardappliestoanysingle-typesteelsedanwheelwhich

4、iscenteredwithnutseatandofwhichthecentralportionisraised.2.NormativeReferenceTheclausesinfollowingdocumentsformanintegralparttothisstandardthroughthereference.AtthemomentwhenthisStandardispromulgated,thecitededitionofeachofsuchdocumentsisvalid.Sinceallsuchdocumentsmayberev

5、isedsubsequently,allpartieswhichusethisStandardareencouragedtoprobeintothefeasibilityofusingthelatestversionsofsuchdocuments.ZBT31030.7-87TechnicalRequirementsforAutomobileWheelBolt,NutandWasher3.TestRequirementforRigidityofNutSeatThepermanentdeformationofeachnutseatshallb

6、enomorethan0.3mm.4.TestSpecimenThetestspecimenshallbethespokewhichhasgonethroughallprocessingstepsotherthanpainting;nomorethan1testisallowedtobecarriedoutonanyboltholeonthespoke,and3testspecimensshallbeprepared.5.TestMethod5.1Eitherofthefollowing2testmethodsmaybeadoptedont

7、hebasisoftheconsultationbetweenpartiesconcerned.5.2VerticalLoadingMethodTheverticalloadingmethodisindicatedinFigure1hereof.ApprovedbyStateBureauofMachineBuildingIndustryon1998-12-16Implementedasof1999-07-01Figure1MicrometerGaugea)Settheindicatingneedleofthemicrometergaugea

8、ttheposition“ZERO”undertheoriginalloadFv.b)ApplythetestloadFfor30seconds.c)Removethetestl