上锐紧固件生产工艺ppt课件

紧固件制造,Packing,FastenerManufactureProcess,Withoutmachining,Page2,RawMaterial,Page3,RawMaterial,Designatedareafordifferenttypesofsteel,Page4,Typesofsteelindicatedbycolour,RawMaterial,Page5,Tagsshowing:-Themanufacturer-Theheatnumber-Thedimension-Theweight-TheCarboncontent,RawMaterial,Page6,WireMaterialControl:-Wirediameter-Generalaspect-Hardness-Hardenability-UTS-Decarbon,RawMaterial,Page7,RawMaterial,Page8,Phosphatingbath,RawMaterial,BathscontrolRegularcleaning,Page9,Phosphatedwires,Page10,Wirecalibration,RawMaterial,Page11,Page12,ColdHeading/HotForging,Page13,HexHeadCapScrewForgingSequence4Stn,CUTOFFSTN,1STSTN,2NDSTN,3RDSTN,4THSTN,ColdHeading,Page14,Page15,Page16,ColdHeading,Page17,Page18,ColdHeading,Page19,ColdHeading,Page20,Inprocesscontrol,ColdHeading,Page21,HotForging,Page22,HotforgingBarsheating,HotForging,Page23,HotForging,Over25mmDiameter,Page24,ThreadRolling,Page25,THREADSROLLING,APROCESSOFFORMINGTHREADSWITHOUTREMOVINGTHEMATERIAL,ThreadRolling,Page26,1Flatrollingdies2Segmentalrotaryrollingdies3Tworollsonesupportingledge4Threerolls,ThreadRolling,Page27,FLATTHREADROLLING,Formoderateproduction,CG1,2,4(partly),5,9,10&11,12,90%productsfromcatalogue,ThreadRolling,Page28,Page29,CIRCULARTHREADROLLING,CIRCULARROLLINGDIE2NOS.,Lowproductionrate,suitableforOddheadshapeCG4(e.g.BN253,256,276,278,258&aboveM24&criticalautoparts),ThreadRolling,Page30,Threadrollingafterheattreatment,Horizontalthreadrollingismainlyusedtoformthreadafterheattreatment,processisveryprecisebutslowandnotfitforlargequantities,ThreadRolling,Page31,Page32,SEGMENTALCIRCULARTHREADROLLING,CIRCULARROLLINGDIE2NOS.,STATIONARYDIE,ROTATINGDIE,3TO4PIECESATATIME,ForM/cscrews,CG5,ThreadRolling,Page33,PlanetaryThreadrolling,Page34,Threadrolling,Setupthreadrolling:5samplesarecheckedbyQC,Page35,In-processcontrol5samples/15mn(Norecord)Recordedvalues:every1hour(min-max),Page36,HeatTreatment,Page37,LPS,HEATTREATMENT,ACOMBINATIONOFHEATING&COOLINGOPERATIONSTOOBTAINDESIREDPROPERTIES,HeatTreatment,Page38,HEATING,HEATINGTHEMATERIALABOVEAUSTENISATIONTEMPERATURE&SOAKINGASPERCROSSSECTION,QUENCHING,RAPIDCOOLINGOFAUSTENISEDMATL.,?,IMMERSINGINOILORWATER,MARTENSITICTRANSFORMATIONRESULTINGINTOINTERNALSTRESSES,HeatTreatment,For8.8andabove820to900DegreeC,Page39,LPS,TEMPERING,HeatingHardenedmaterialtospecifictemp.muchbelowaustenisationtemp.forspecificdesiredproperties,?,ImmediatelyafterQuenching,REDUCESINTERNALSTRESSES&ALSOREDUCESHARDNESS,HEATTREATMENTPROCESSFOR8.8&ABOVE,45010DegreeC,Page40,Fastenersofvariousgradesmadeoutofdifferentsteels,Atroomtemp.theMaterialisinPearlite(Lamellar)/Spherodised&ferriteform,Quenching,FastCooling,HardMartensite(accicular)Structure,Brittle,notsuitableforuse,Tempering,TemperedMartensiteStructure,productsuitableforuse,FurnaceHavingthreezones,ControlledatmosphereofendoGasavailablefromgasgenerator,cra