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【英文标准名称】:StandardTestMethodforGallingResistanceofMaterialCouples
【原文标准名称】:连接材料耐磨损的标准试验方法
【标准号】:ASTMG196-2008
【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】:G02.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:adhesivewear;galling;gallingresistance;macroscopicsurfacedamage;seizedcomponents;slidingmetallicsurfaces
【摘要】:Thistestmethodisdesignedtorankmaterialcouplesintheirresistancetothefailuremodecausedbygallingandnotmerelytoclassifythesurfaceappearanceofslidingsurfaces.ThistestmethodhasbeenshowntohavehigherrepeatabilitythanTestMethodG98indeterminingthegallingresistance.TestMethodG98canbeusedforinitialrankingofgallingresistance.5.3Thistestmethodshouldbeconsideredwhendamaged(galled)surfacesrendercomponentsnon-serviceable.Experiencehasshownthatgallingismostprevalentinslidingsystemsthatareslowmovingandoperateintermittently.Thegallingandseizureofthreadedcomponentsisaclassicexamplethatthistestmethodmostcloselysimulates.5.4Othergalling-proneexamplesinclude:sealingsurfacesofvalvesthatmayleakexcessivelyduetogallingandpumpwearringsthatmayfunctionineffectivelyduetogalling.5.5Iftheequipmentcontinuestooperatesatisfactorilyandlosesdimensiongradually,thengallingisnotpresent,andthewearshouldbeevaluatedbyadifferenttestmethod.5.6Thistestmethodshouldnotbeusedforquantitativeorfinaldesignpurposes,sincemanyenvironmentalfactorsinfluencethegallingperformanceofmaterialsinservice.Lubrication,alignment,stiffness,andgeometryareonlysomeofthefactorsthatcanaffecthowmaterialsperform.Thistestmethodhasprovenvaluableinscreeningmaterialsforprototypicaltestingthatmorecloselysimulatesactualserviceconditions.1.1Thistestmethodcoversalaboratorytestthatranksthegallingresistanceofmaterialcouplesusingaquantitativemeasure.Baremetals,alloys,nonmetallicmaterials,coatings,andsurfacemodifiedmaterialsmaybeevaluatedbythistestmethod.1.2Thistestmethodisnotdesignedforevaluatingthegallingresistanceofmaterialcouplesslidingunderlubricatedconditions,becausegallingusuallywillnotoccurunderlubricatedslidingconditionsusingthistestmethod.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:6P.;A4
【正文语种】:英语