【英文标准名称】:StandardGuideforSteamTreatmentofFerrousPowderMetallurgy(P/M)Materials
【原文标准名称】:黑色粉末冶金(P/M)材料蒸汽处理的标准指南
【标准号】:ASTMB935-2005(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:B09.05
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:blackening;blackoxide;ferrousPMparts;ironoxide;magnetite;steam;Ferrousmetals/alloys--specifications;MIM(metalinjectedmolded)applications;PIM(powderinjectedmolding)applications;Steamblackening/treatment;Structuralbuildingmate
【摘要】:Theperformanceandqualityofsteam-treatedmaterialsdependsuponthesurfacecleanlinessofthematerialpriortosteamtreatmentandtheadequacyoftheprocessing.Steamtreatmentcanbeusedasadecorativecoating,producingablue-graytoablue-blackappearance.ItcanreducethesusceptibilityofferrousPMmaterialstofurtheroxidationandcorrosion,thusprovidingbettershelflife.Moresignificantly,improvementsinapparenthardness,compressivestrength,wearcharacteristics,andsomemechanicalproperties(seeAppendixX1)canbeobservedduetosteamtreatment.Thehardnessofmagnetite(Fe3O4)formedduringsteamtreatmentistypicallyequivalentto50HRC,andwhenpresentinsinteredmaterials,theirwearresistancecanbeimprovedsignificantly.Steamtreatmentisalsousedtosealpartsorprovideabasematerialforadditionalcoatings.SteamtreatedferrousPMmaterialsareusedinmanyindustries,includingautomotive,marine,homeappliancesandlawnandgardenapplications.1.1Thisguideisintendedasanaidinestablishingandmaintainingaprocedureforthesteamtreatment,alsoreferredtoassteamblackening,ofsinteredferrousPMmaterialsandtheappropriateuseandevaluationofthesematerials.AdditionalinformationconcerningtheeffectofthisprocessonferrousPMmaterialpropertiesiscontainedinAppendixX1.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H70
【国际标准分类号】:77_160
【页数】:3P.;A4
【正文语种】:英语