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【英文标准名称】:StandardTestMethodsforDensityofCompactedorSinteredPowderMetallurgy(PM)ProductsUsingArchimedesx2019;Principle
【原文标准名称】:用阿基米德原理测定压实或烧结粉末冶金(PM)产品密度的标准试验方法
【标准号】:ASTMB962-2008
【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】:B09.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:density;greendensity;impregnateddensity;PMproducts;powdermetallurgyproducts;sintereddensity
【摘要】:ThevolumeofacomplexshapedPMpartcannotbemeasuredaccuratelyusingmicrometersorcalipers.Sincedensityismassperunitvolume,aprecisemethodformeasuringthevolumeisneeded.Archimedesx2019;principlemaybeusedtocalculatethevolumeofwaterdisplacedbyanimmersedobject.ForthistobeapplicabletoPMmaterialsthatcontainsurfaceconnectedporosity,thesurfaceporesaresealedbyoilimpregnationorsomeothermeans.Thegreendensityofcompactedpartsortestpiecesisnormallydeterminedtoassistduringpressset-up,orforqualitycontrolpurposes.Itisalsousedfordeterminingthecompressibilityofbasepowders,mixedpowders,andpremixes.ThesintereddensityofsinteredPMpartsandsinteredPMtestspecimensisusedasaqualitycontrolmeasure.Theimpregnateddensityofsinteredbearingsisnormallymeasuredforqualitycontrolpurposesasbearingsaregenerallysuppliedandusedoil-impregnated.1.1Thisstandarddescribesamethodformeasuringthedensityofpowdermetallurgyproductsthatusuallyhavesurface-connectedporosity.1.2ThedensityofimpermeablePMmaterials,thosematerialsthatdonotgainmasswhenimmersedinwater,maybedeterminedusingTestMethodB311.1.3Thecurrentmethodisapplicabletogreencompacts,sinteredparts,andgreenandsinteredtestspecimens.1.4Withtheexceptionofdensityvalues,forwhichtheg/cm3unitistheindustrystandard,thevaluesstatedinSIunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesareconvertedinaccordancewithIEEE/ASTMSI10andareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H16
【国际标准分类号】:77_160
【页数】:6P.;A4
【正文语种】:英语