【英文标准名称】:StandardTestMethodforConductimetricAnalysisofWaterSolubleIonicContaminationofBlastingAbrasives
【原文标准名称】:喷射磨料的水溶离子污染电导定量分析的标准试验方法
【标准号】:ASTMD4940-2010
【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】:D01.46
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:abrasive;analysis;blasting;chloride;conductimetric;conductivity;contamination;interlaboratorytesting;ionogenic;precision;salts.;steelsurfaces;Abrasiveblasting;Calibration;Conductanceandconductivity(electrical);Conductimetricanalysi
【摘要】:By-productabrasivesmanufacturedfromslagsthatareaircooledorquenchedwithpurewater,normallycontainlowconcentrationsofionicmaterials,asdominedmineralabrasives.However,slagsquenchedwithseawaterorothercontaminatedwater,containhighamountsofionicmaterialasdoesseashoresand.Thiscontaminationoftheabrasivecantransfertothesteelsurfacesbeingblasted,whereitmayacceleratecorrosion.Thistestisusefulinestablishingthecleanlinessoftheabrasiveatthejobsite.Thistestmethodprovidesavaluethatindicatestheconcentrationoftotalwatersolubleionsbasedontheirelectrolyticmobility.Thus,itprovidesanindicationofioniccorrosionpotential.Note18212;Atypicalvalueofconductivityforahighlevelofcontaminationis500x03BC;mho/cm.Atypicalvalueforalowlevelofcontaminationis50x03BC;mho/cm.1.1Thistestmethoddescribesaprocedureforrapidevaluationofabrasivesforthepresenceofioniccontaminationbydeterminingthetotalconcentrationofwatersolubleioniccontaminantsbymeansofaconductivitytest.1.2Thistestmethoddoesnotidentifytheionicspeciespresentnorprovidequantitativeresultsoneachspecies.1.3Thistestmethodisbasedonavolumecomparisonamongabrasivesofsimilarsizes.Avolumecomparisonismorecloselyrelatedtosurfaceareaoftheabrasivesthanisaweightcomparison.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:25_220_10
【页数】:3P.;A4
【正文语种】:英语