滴注式气体渗碳工艺的研究

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《》20103916Material&HeatTreatment、[1],-。,,,。1%,1%10h[2],、。、,,。,、,,、。11.1RJJ-75-9T,20,准8mm×30mm,准40mm×100mm,0.08mm08F。1.2、。,±5.5℃。3~5min,。,,,[3]。、、[3],,++CCl4,、CO、H2CH4,。,,。,,,。1.3,,,,10℃,0.07%。,。、、,920℃。1.4[4],,。1.5,(2%CCl4)220d/min,(,712000):、。,、。,,,。:;;;:TG156.8+1:A:1001-3814(2010)16-0163-03ResearchonDrippingTypeGasCarbonizationLIXiaopeng,LIMingzhu(MaterialEngineeringDepartment,ShaanxiPolytechnicInstitute,Xianyang712000,China)Abstract:Dripingtypegascarbonizationisextensivelyusedinmidium-sizedorsmall-sizedindustrialenterprise.Thecarbonizationspeedisslow,thepowerconsumptionislargeandthecostishigh.Aheattreatmentwaywithhighefficientandenergyconservationofcarbonizingwasobtainedonthebasisoforiginalequipments.Keywords:highspeed;energyconservation;carbonization;dripping:2010-02-03:(1974-),,,,,;:029-33152054;E-mail:lxpgreat@sina.com163HotWorkingTechnology2010,Vol.39,No.16Material&HeatTreatment201081h,0.3%~0.35%,,,,(2%CCl4)220d/min,220d/min1h,0.8%~0.9%。,。,-、,1。1,(2%CCl4)60d/min,170d/min,1.86%C。,,。,7h1mm,,。,180d/min,120d/min,1mm5h,,。,,[5],,。:Fe3C,1.3%C,,1.15%()。,1,2;3。2920℃,O2、CO2H2O,。,O2、CO2H2O,CH4、COH2。860℃[4],860℃。,CCl4H2,。CCl4,。、[6]。、。CCl4,,COH2,。,3,:①,CCl4、COH2,-()。②,,/(d·min-1)/mm/hA160018.0B16016017.5C18012018.0D150600.73.5E200600.94.5F1706014.0120-、、Tab.1InfluenceofratioofkeroseneandalcoholonCP,thickofcarbonizedlayer,carbonizedtimeof20steelduringcarbonizing1.00.90.80.70.60.50.40.30.20.10.10.30.50.70.91.11.3/mmwC(%)2Fig.2RelationbetweenCcontentandthickofcarbonizedlayer1Fig.1Thecurvesofcarbonizingprocessforworkedsurface/℃/min170d/min60d/min50d/min1806090220d/min100d/min120d/min860920220d/min3Fig.3Thecurvesofcarbonizingprocessforwithoutworkingsurface/℃/min180d/min120d/min50d/min2106090220d/min100d/min120d/min220d/min220d/min220d/min860920220d/min220d/min164《》20103916Material&HeatTreatment(137)。(3)360℃190℃T6,351MPa270MPa,107HB,9.86%11.93%。:[1].[J].,2002,40(4):50-54.[2]ZhangXianhong,RuanXueyu,OsakadaK.ForgeabilityofAZ31Bmagnesiumalloyinwarmforging[J].Trans.NonferrousMet.Soc.China,2003,13(3):632-635.[3],,.[M].:,2004.280-360.[4].[M].:,2007,15.[5].[M].:,2005.359.[6],,.AZ91D[J].,2010,39(1):82-84.(162),,,。550℃,“”,,[3]。,[4]。,550℃,,。3(1)20Mn2SiVB,、,、。(2)20Mn2SiVB,550℃。:[1],,,.Fe-Mn-B[J].,1981,5(2):5-14.[2].[M].:,1985.148-151.[3].[M].:,2007.12-26.[4],,,.20Mn2SiVB[J].,2006,(2):11-14.,,-。,。4,,1mm4.5h,、。,75kg,225kW·h,30,6750kW·h,3000,。、、。5,、;,--;;,。:[1].22-24[J].,1987,(1):22-24.[2],,,.-[J].,2003,(5):12-13.[3],,,.[J].,1996,(10):4-6.[4].20CrMnTi[J].,1991,(2):31-37.[5]KolzsvavgZ.[J].,1980,(5):32.[6],,.()[M].:,2005.327.165

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