ASTM B970-2009 粉末冶金(PM)轴承及结构件的洁净度的标准试验方法

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【英文标准名称】:StandardTestMethodforCleanlinessofPowderMetallurgy(PM)BearingsandStructuralParts
【原文标准名称】:粉末冶金(PM)轴承及结构件的洁净度的标准试验方法
【标准号】:ASTMB970-2009
【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】:B09.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bearings;cleanliness;contamination;filtration;Residue
【摘要】:Residueonabearingmaybedetrimentaltoitslongevityduetoabrasivewear.Residueonstructuralpartsmayaffectthefitofassembliesordisturbtheperformanceoftheentirepieceofequipmentviaexcessfrictionorwear.Partproducerscanutilizethisproceduretodeterminethecleanlinessoftheirprocesses.Highresiduelevelsonsinteredpartsmayindicatealubricantremovalproblem.Residuelevelsmayalsoindicatetheconditionofvariousfluidsusedinpartprocessing.Thistestmethodcanbeappliedwhenrequiredbytheuserorinternallyforprocessengineeringorqualitycontrol/compliancepurposesbytheproducer.1.1ThistestmethodcoversaquantitativeproceduretodeterminethecleanlinessofPMbearingsandstructuralparts.nbsp;nbsp;nbsp;1.2Thisisalaboratorytestconsistingofcleaningsamplepartsundercontrolledconditionsandcalculatingtheamountorpercentofresiduefromthemassoftheremovedcontaminants.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H72
【国际标准分类号】:21_100_01
【页数】:3P.;A4
【正文语种】:英语