【英文标准名称】:StandardSpecificationforBronze-BasePowderMetallurgy(PM)Bearings(Oil-Impregnated)
【原文标准名称】:铜基粉末冶金(PM)轴承(油浸的)的标准规范
【标准号】:ASTMB438-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:bearingbreakingload;bronzebearings;impregnateddensity;interconnectedporosity;oilcontent;oil-impregnatedbearings;openporosity;porousmetallicbearings;radialcrushingstrength;self-lubricatingbearings;PMbearings;PVFactor;PVLimit;Si
【摘要】:1.1Thisspecificationcoversporousmetallicsleeve,flange,thrustandsphericalbronze-basebearingsthatareproducedfrommixedmetalpowdersutilizingpowdermetallurgy(PM)technologyandthenimpregnatedwithoiltosupplyoperatinglubrication.1.2Includedarethespecificationsforthechemical,physicalandmechanicalrequirementsofthosebronze-basePMmaterialsthathavebeendevelopedandstandardizedspecificallyforuseinthemanufactureoftheseself-lubricatingbearings.1.3Thisspecificationisapplicabletothepurchaseofbronze-basebearings(oil-impregnated)thatwereformerlycoveredbymilitaryspecificationsandareintendedforgovernmentormilitaryapplications.ThoseadditionalgovernmentrequirementsthatonlyapplytomilitarybearingsarelistedintheSupplementaryRequirementssectionofthisspecification.1.4ThisspecificationacccompaniesSpecificationB439thatcoverstherequirementsforIron-BasePowderMetallurgy(PM)Bearings,(Oil-Impregnated).1.5Typicalapplicationsforbronze-basebearingsarelistedinAppendixX1.1.6BearingdimensionaltolerancedataareshowninAppendixX2,whileengineeringinformationregardinginstallationandoperatingparametersofPMbearingsisincludedinAppendixX3.Additionalusefulinformationonself-lubricatingbearingscanbefoundinMPIFStandard35andthetechnicalliterature.1.7Withtheexceptionofdensityvaluesforwhichtheg/cm3unitistheindustrystandard,thevaluesstatedininch-poundunitsaretoberegardedasstandard.TheSIequivalentsofinch-poundunits,showninparenthesis,havebeenconvertedinaccordancewithIEEE/ASTMSI10,maybeapproximateandareonlyforinformation.1.8Thefollowingsafetyhazardscaveatpertainsonlytothetestmethodsdescribedinthisspecification.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J11
【国际标准分类号】:21_100_01
【页数】:22P.;A4
【正文语种】:英语