【英文标准名称】:StandardTestMethodforDeterminationofSlurryAbrasivity(MillerNumber)andSlurryAbrasionResponseofMaterials(SARNumber)
【原文标准名称】:材料泥浆磨蚀性(磨碎值)和泥浆磨蚀特性曲线(SAR值)测定的标准试验方法
【标准号】:ASTMG75-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:G02.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:磨蚀;金属;泥浆;测试;磨损
【英文主题词】:MillerNumber;SARNumber;slurryabrasivity;slurrymaterialwear
【摘要】:TheMillerNumber5isanindexoftherelativeabrasivityofslurries.Itsprimarypurposeistoranktheabrasivityofslurriesintermsofthewearofastandardreferencematerial.TheweardamageonthestandardwearblockisworseastheMillerNumbergetshigher.TheSARNumberisanindexoftherelativeabrasionresponseofmaterialsastestedinanyparticularslurryofinterest.TheSARNumberisageneralizedformoftheMillerNumberapplicabletomaterialsotherthanthereferencematerialusedfortheMillerNumberdetermination.Amajorpurposeistorankconstructionmaterialsforuseinasystemforpumpingandfluidhandlingequipmentforaparticularslurry.ItcanalsobeusedtoranktheabrasivityofvariousslurriesagainstanyselectedconstructionmaterialotherthanthereferencematerialspecifiedforaMillerNumberdetermination.TheslurrydamageonthespecimenofmaterialbeingtestedisworseastheSARNumbergetshigher.ExperiencehasshownthatslurrieswithaMillerNumberoraSARNumberofapproximately50orlowercanbepumpedwithminorabrasivedamagetothesystem.Aboveanumberof50,precautionsmustbeobservedandgreaterdamagefromabrasionistobeexpected.Accordingly,theMillerNumberandtheSARNumberprovideinformationabouttheslurryorthematerialthatmaybeusefulintheselectionofpumpsandotherequipmentandtopredictthelifeexpectancyofliquid-endpartsofthepumpsinvolved.TheSARNumbercanbeusedtodeterminethemostsuitablematerialsforcertainslurrysystems.1.1Thistestmethodcoversasinglelaboratoryprocedurethatcanbeusedtodevelopdatafromwhicheithertherelativeabrasivityofanyslurry(MillerNumber)ortheresponseofdifferentmaterialstotheabrasivityofdifferentslurries(SARNumber),canbedetermined.1.2Thetestdataobtainedbythisprocedureisusedtocalculateeitheranumberrelatedtotherateofmasslossofduplicatestandard-shaped27%chromiumironwearblockswhenrunforaperiodoftimeintheslurryofinterest(MillerNumber),ortocalculateanumberrelatedtotherateofmassloss(convertedtovolumeloss)ofduplicatestandard-shapedwearspecimensofanymaterialofinterestwhenrunforaperiodoftimeinanyslurryofinterest(SARNumber).1.3TherequirementforafinishedflatwearingsurfaceonthetestspecimenforaSARNumbertestmayprecludeapplicationoftheprocedurewherethin(0.051to0.127-mm),hard,wear-resistantcoatingswillnotallowforsurfacefinishing.The6hourstotaldurationoftheSARNumberTestmaynotallowestablishmentofaconsistentrate-of-mass-lossoftheunfinishedsurface.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H20
【国际标准分类号】:17_040_20
【页数】:20P.;A4
【正文语种】: