【英文标准名称】:StandardPracticeforCompressionMoldingThermoplasticMaterialsintoTestSpecimens,Plaques,orSheets
【原文标准名称】:将热塑性材料压塑为试样、饰板或板材的标准实施规程
【标准号】:ASTMD4703-2010
【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】:D20.09
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acrylonitrile-butadiene-styrene(ABS);chlorinatedpoly(vinylchloride)(CPVC);compressionmolding;polyethylene(PE);poly(vinylchloride)(PVC);styrene-butadiene;testspecimenpreparation;thermoplastics;Acrylonitrile-butadiene-styrene(ABS)
【摘要】:Themethodsbywhichsamplematerialsarepreparedandmoldedinfluencethemechanicalpropertiesofthespecimen.Unlikeinjectionmolding,theobjectiveofcompressionmoldingistoproducetestspecimensorsheetsthatarebothhomogeneousandisotropic.Moldedspecimensmaybemadefrompowderorpelletssuchasarereceiveddirectlyfromamaterialmanufacturer,particlesproducedinarecyclerecoveryoperation,orfromamilledpreformorsheetpreparedonatwo-rollmill.Thepowder,pellets,particles,preform,orsheetaremeltedandmoldedinamolddesignedtoproduceafinishedspecimenofagivengeometry,size,andthickness,ormeltedandmoldedintheformofasmoothplaqueorsheetofuniformthicknessfromwhichdesiredspecimensarecut,punched,ormachined.Workingacompoundonatwo-rollmillpriortomoldingwilldisperseanddistributethecompoundadditivesinamannerthatwillaffectthephysicalpropertiesofthecompound.Theneedformillingasamplepriortocompressionmoldingmaybedeterminedbyreferencetotherelevantmaterialspecificationorthematerialmanufacturer.Itisimportanttotreatdifferentsamplesofthesametypeofmaterialinthesameway:ifmillingwasdonepriortomoldingonamaterialwhichistobeusedasastandardforcomparison,allnewmaterialstobetestedagainstthispracticeshouldbepreparedandmoldedinasimilarmanner.Theapparatusandexactconditionsrequiredtoprepareadequatespecimensmayvaryforeachplasticmaterial.ApparatusandprocedureswhichshouldbesatisfactoryformoldingmanydifferentplasticmaterialsaregiveninthispracticeinSections5and6.TheapparatusandprocedureswhichhavebeenfoundsatisfactoryformoldingcertainspecificmaterialsaregivenintheAppendix.Inanycase,theapparatusandprocedurestobeusedinproducingcompression-moldedspecimensofagivenmaterialmaybeobtainedbyreferencetotherelevantmaterialspecificationandshouldbeagreeduponbetweenthepurchaserandthesupplier.1.1Thispracticecoversthecompressionmoldingofthermoplasticgranulesandmilledstockforthepreparationoftestspecimens.1.2Whileconditionsforcertainmaterialsaregiven,theprimarysourceofspecificconditionsshallbethematerialspecificationstandardsforeachtypeofmaterial.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThemainbodyofthispracticeisequivalenttoISO293-1986.AnnexA1andISO293-1986differinsomedetails;however,specimenspreparedusingAnnexA1,ProcedureAshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodD.SpecimenspreparedusingAnnexA1,ProcedureCshouldbeequivalenttothosepreparedusingISO293-1986,CoolingMethodB.However,duetothegreatercoolingratetolerancesoftheISOstandard,specimenspreparedinaccordancewithISOCoolingMethodBmaynotbeequivalenttoAnnexA1,ProcedureC.
【中国标准分类号】:G33
【国际标准分类号】:
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:Toolsforpressing-Wearplatesforpressdies-Part1:TypA(ISO9183-1:2008)
【原文标准名称】:冲压工具.冲压模耐磨板.第1部分:A型(ISO9183-1-2008)
【标准号】:DINISO9183-1-2011
【标准状态】:现行
【国别】:德国
【发布日期】:2011-05
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:通孔;名称与符号;尺寸规格;拉模;压延冲模;导向机构;孔内廓;布置;冲压车间;压力设备;金属的压力加工;压力机;尺寸;厚度;公差(测量);工具;耐磨护板;摩擦片
【英文主题词】:Clearanceholes;Designations;Dimensions;Drawingdies;Drawingdies(presstools);Guidemechanisms;Holeconfiguration;Layout;Pressrooms;Presstools;Pressworkingsofmetals;Presses;Size;Thickness;Tolerances(measurement);Tools;Wearplates;Wearingplates
【摘要】:ThepartofISO9183specifiesthebasicdimensionsandtolerancesinmillimetersofwearplatesforpressdies,typeA,intendedforusemainlyinlargepresses.Italsospecifiesthesizeandpositionsoftheclearanceholesforattachment.Itgivesmaterialindications,andspecifiesthedesignationofwearplatesforpressdies,typeA,whichmeettherequirementsofthispartofISO9183.Twothicknessesofthistypeofwearplatearespecified:typeA1,withathickness,t,of20mm,andtypeA2,withathickness,t.of12mm.
【中国标准分类号】:J62
【国际标准分类号】:25_120_10
【页数】:12P.;A4
【正文语种】:英语