【英文标准名称】:StandardTestMethodforMeasuringDimensionalChangesofMetalPowderSpecimens
【原文标准名称】:金属粉末样品尺寸变化测量的标准试验方法
【标准号】:ASTMB610-2000e1
【标准状态】:现行
【国别】:
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:B09.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:diesize;dimensionalchange;metalpowders;sintering;
【摘要】:Thedimensionalchangeobtainedunderspecifiedconditionsofpressingandsinteringisamaterialcharacteristicinherentinthepowder.Itisusefultotheproduction,testing,anduseofmetalpowders.Theabsolutedimensionalchangemaybeusedtoclassifypowdersordifferentiateonetypeorgradefromanother,toevaluateadditionstothepowdermixormeasureprocesschanges,andtoguideinthedesignoftooling.Thecomparativedimensionalchangeismainlyusedasaqualitycontroltesttomeasurevariationsbetweenlotsofmetalpowdersofthesamematerialcomposition.Factorsknowntoaffectsizechangearethetestspecimenprocessconditionsofgreendensity,sintertime,sintertemperature,sinteratmosphere,levelofadditionstothebasemetalpowder,lubricanttype,powdergrade,powdertype,andpowderlot.1.1Thistestmethodcoversaprocedurefordeterminingthechangeindimensionsthatoccursasaresultofsinteringametalpowderspecimen.Thesizechangereferredtoisthedifferencebetweenthediesizeandthesizeofthesinteredspecimenafterithascooledtoroomtemperature,expressedasapercentage.Thissizechangeisabasiccharacteristicofthemetalpowder.1.2Thegeneralprocedureofmeasuringatestspecimenanddie,thecalculatinghedimensionalchanges,asdescribedinthistestmethod,alsomaybeusedtodeterminegreenexpansion,heattreatchanges,orotherdimensionalchangesoftestspecimensthatresultfromprocessingsteps.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIequivalentsareinparenthesesandmaybeapproximate.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H70
【国际标准分类号】:77_160
【页数】:3P.;A4
【正文语种】: