精密冷锻齿轮用钢的快速球化退火工艺

1,2,3(1.,300457;2.;3.):20CrMnTi40Cr(+):;;20CrMnTi;40Cr;:TG156.25:A:100123814(1999)0520026202TheFastSpheroidizingAnnealingTechnologyofSteelforPrecisionColdForgingGearLIXin2sheng1,SONGBao2jing2,LIANGShu2rong3(1.TianjinEverbestGearLimitedCompany;2.TianjinHeatTreatmentAssociation;3.TianjinResearchInstituteofHeatTreatment)Abstract:Thispaperdealswiththespheroidizingannealingtechnologyof20CrMnTisteel,40Crsteelforprecisioncoldforginggearandtheresultofthetechnology(solutiontreatmentandfastspheroidizingannealing).Keywords:precisioncoldforging;gear;20CrMnTisteel;40Crsteel;spheroidizingannealing190,,,,,6259,,,H2O2,,,,,,2,20CrMnTi40Cr:(1):80%(2):20CrMnTi170HB;40Cr180HB(3):,(4):12h3,:(1)Ac1(2)Ac1Ac3,(3)Ac1Ac3,(4)Ac1+,,,,,,,:,,,:1999204205:(19622),,6219995,:+,,;700,,,,,4,65kW,,20CrMnTi40Cr,12120CrMnTi240Cr20CrMnTi+,220HB40Cr+,218HB20CrMnTi40Cr12,:(1):20CrMnTi40Cr95%JBöT507429163(2):20CrMnTi161168HB,40Cr173180HB(3):,(4):56h320CrMnTi(a)40Cr(b)400,,,(,510280):,:;;:TG156.8+2:A:100123814(1999)0520027202ThePreoxidationbeforeGas-NitridingonStainlessSteelsZHANGXiao2cong(GuangzhouMechanical2electricalResearchInstitute)Abstract:Thepaperpresentsanddiscussesmicrostructure,vickershardnessanddepthofnitridedcaseofserveralausteniteandmartensitestainlesssteels,afterpreoxidationandgas2nitriding.Thepaperisofbenificialreferenceforpre2treatmentbeforegas2nitridingofstainlessparts.Keywords:stainlesssteel;gas2nitriding;preoxidation1,,[1]Cr2O3,:;;;[1,2],,,:1999206210:(19632),,,7219995