渗碳齿轮心部铁素体对性能影响的分析

453003。。AaalysisoftheInfluenceonGearPerformanceoftheFerriteinintheCenterofCarburizedGearWANGShuyanYubeiPowerSteeringSystemCo．LtdXinxiangHenan453003ChinaAbstractThecarburizedgearofonecompanybreakedduringtheearlystageoftheendurancetestaftermetallographicinspectionitwasfoundthattherearealotofferritesinthecenterofthegear．Theinfluenceongearperformanceoftheferriteinthecenterofthecarburizedgearwasanalyzed．Aftersometestsandresearchwefoundthattheferriteinthecentreofthegearwillweakentheintensityandtenacityofthegearandthefatiguestrengthwillbereduced．KeywordsCarburizedgearFerriteinthecentreofthegearPerformance0。。25SCM420H890℃－830℃－200℃。、、44～45HRC22.5～41.7HRC800℃34～36HRC。8。。11++QC/T262－1999《》、、1。2+。《》JB/T6141.3－92《》5。1222.1314SCM420H215mm315mmJ5.5。4J5.534.5～46HRC。3。。34.5～46HRC22.5～41.7HRC。。800℃SCM420H20CrMoAC1、AC3743℃818℃800℃AC1～AC3。2.22.2.1AC3。。20CrMnTi4。。2.2.2SCM420H50mm415mm×55mm1890℃760℃200℃60℃2890℃830℃200℃60℃。410mm×10mm×55mmULB30A。1。1Ak/J17055%+45%5270639295%+5%74105851627384。。SCM420H。2.2.3。5。。。。3、。6。。7146sECU。5。ECU。60s。。5。5ECUEEPROM、、。ECU6。ECUHi-DSTM“”ECU。。ECU。。。。ECU。7、、。。。1958—。[e-mail]。2010－06－0764。。41。。2。。3、。【1】．M．2003338．【2】JISG4052S．【3】C．A．．M．．1984154．【4】．20CrMnTiJ．2005151．【5】．J．199566．【6】．J．2005492．1973—、。[e-mail]。2010－03－30