【英文标准名称】:StandardTestMethodforGallingResistanceofMaterials
【原文标准名称】:材料抗磨损的标准试验方法
【标准号】:ASTMG98-2002(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:button-on-blocktest;galling;gallingresistanceranking;macroscopicsurfacedamage;seizedcomponents;slidingmetallicsurfaces;thresholdgallingstress;Button-on-blocktest;Compressiontesting--metallicmaterials;Damageassessment;Destructivet
【摘要】:Thistestmethodisdesignedtorankmaterialcouplesintheirresistancetothefailuremodecausedbygallingandnotmerelytoclassifythesurfaceappearanceofslidingsurfaces.Thistestmethodshouldbeconsideredwhendamaged(galled)surfacesrendercomponentsnon-serviceable.Experiencehasshownthatgallingismostprevalentinslidingsystemsthatareslowmovingandoperateintermittently.Thegallingandseizureofthreadedcomponentsisaclassicexamplewhichthistestmethodmostcloselysimulates.Othergalling-proneexamplesinclude:sealingsurfacesofvaluetrimwhichmayleakexcessivelyduetogalling;andpumpwearringsthatmayfunctionineffectivelyduetogalling.Iftheequipmentcontinuestooperatesatisfactorilyandlosesdimensiongradually,thenmechanicalwearshouldbeevaluatedbyadifferenttestsuchasthecrossedcylinderTestMethod(seeTestMethodG83).Chainbeltpinsandbushingsareexamplesofthistypeofproblem.Thistestmethodshouldnotbeusedforquantitativeorfinaldesignpurposessincemanyenvironmentalfactorsinfluencethegallingperformanceofmaterialsinservice.Lubrication,alignment,stiffnessandgeometryareonlysomeofthefactorsthatcanaffecthowmaterialsperform.Thistestmethodhasprovenvaluableinscreeningmaterialsforprototypicaltestingthatmorecloselysimulatesactualserviceconditions.1.1Thistestmethodcoversalaboratorytestwhichranksthegallingresistanceofmaterialcouples.Mostgallingstudieshavebeenconductedonbaremetalsandalloys;however,non-metallics,coatings,andsurfacemodifiedalloysmayalsobeevaluatedbythistestmethod.1.2Thistestmethodisnotdesignedforevaluatingthegallingresistanceofmaterialcouplesslidingunderlubricatedconditionsbecausegallingusuallywillnotoccurunderlubricatedslidingconditionsusingthistestmethod.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A42
【国际标准分类号】:17_040_20
【页数】:4P.;A4
【正文语种】:英语