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【英文标准名称】:StandardTestMethodforWire-ClothSieveAnalysisofNonplasticCeramicPowders
【原文标准名称】:非塑性陶瓷粉末的金属丝筛分析的标准试验方法
【标准号】:ASTMC371-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C21.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:矾土
【英文主题词】:alumina;particlesizedistribution;sieveanalysis;silica;wet-sieving;Ceramicpowders(nonplastic);Sieveanalysis--ceramics
【摘要】:Sieveanalysesarecarriedouttodeterminetheparticlesizedistributionofpowderswhich,inturn,areusedtoqualifythosematerialsastotheirusefulnessintheprocessunderconsideration.Sinceparticlesizeanalyseshaveonlyrelativesignificance,theresultsshouldbeconsideredonlywheretheycorrelatewithprocesscharacteristics.Theparameterthatisbeingmeasuredinthistestistheamountofmaterialthatwillpassthroughaclothhavingtheoreticallysquareopenings.Itmustberememberedthatalltheholesarenotsquare,noruniforminsize,andthequestionofwhetheragivenparticlewillgothroughisastatisticalone.Sinceeachparticlesizeanalysismethodmeasuresauniquephysicalparameter,theresultsfromonemethodmaynotagreewiththosefromanother.Particlesizedistributionsplayaroleinsuchpropertiesasbulkdensity,dustiness,andhandlingcharacteristics.Careshouldbetaken,however,wheninterpretationsaremadefromoneortwopoints(sieves)onthedistributioncurve.1.1Thistestmethodcoversthedeterminationoftheparticlesizedistributionofnonplasticceramicpowderssuchasalumina,silica,feldspar,pyrophyllite,nephelinesyenite,talc,titanates,andzirconusingwireclothsieves.1.2Materialscontainingalargeamountoffines,containingagglomerates,orthatarenonfree-flowing,arewet-sievedtoremoveexcessivefinesortodisperseagglomeratesbeforeperformingthetest.Thistechniqueisnotapplicabletomaterialsthatare,toanydegree,watersoluble.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunits,orareothercustomaryunits(inthecaseofsieveframediameterandsievenumber),thatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:81_060_10
【页数】:2P.;A4
【正文语种】:英语