quenching thiab tempering kho

quenching thiab tempering kev kho yog hais txog ob txoj kev kho cua sov ntawm quenching thiab high-temperature tempering, uas yog lub hom phiaj los xyuas kom meej tias lub workpiece muaj cov khoom zoo txhua yam. Kub kub tempering yog hais txog tempering ntawm 500-650 ℃. Feem ntau quenched thiab tempered qhov chaw ua hauj lwm nyob rau hauv kuj loj dynamic loads, thiab lawv dais cov teebmeem ntawm nro, compression, dabtsi yog khoov, torsion los yog shear. Qee qhov chaw kuj muaj kev sib txhuam, xav tau qee yam hnav tsis kam, thiab lwm yam. Nyob rau hauv luv luv, qhov chaw ua hauj lwm nyob rau hauv ntau yam composite stresses. Cov hom ntawm cov khoom no feem ntau yog cov yam ntxwv ntawm ntau lub tshuab thiab cov tshuab, xws li shafts, txuas rods, studs, gears, thiab lwm yam, thiab tau siv dav hauv kev tsim khoom lag luam xws li tshuab cuab yeej, tsheb, thiab tsheb laij teb. Tshwj xeeb tshaj yog rau cov khoom loj hauv kev tsim tshuab hnyav, quenching thiab tempering kev kho mob feem ntau yog siv. Yog li ntawd, quenching thiab tempering kev kho mob plays lub luag haujlwm tseem ceeb hauv kev kho cua sov. Hauv cov khoom siv kho tshuab, qhov kev ua tau zoo rau cov khoom quenched thiab tempered tsis zoo ib yam vim lawv cov kev ntxhov siab sib txawv. Ntau yam quenched thiab tempered qhov chaw yuav tsum muaj cov cuab yeej zoo txhua yam, uas yog qhov tsim nyog ua ke ntawm lub zog siab thiab siab tawv, kom ntseeg tau tias lub sijhawm ntev ua haujlwm ntawm cov khoom.

Quenching yog thawj kauj ruam ntawm cov txheej txheem, thiab cov cua kub kub nyob ntawm qhov muaj pes tsawg leeg ntawm cov hlau, thaum lub quenching nruab nrab yog xaiv raws li hardenability ntawm cov hlau thiab qhov loj ntawm cov hlau tivthaiv. Tom qab quenching, cov kev ntxhov siab sab hauv ntawm cov hlau yog siab thiab nkig, thiab tempering yog tsim nyog los tshem tawm kev ntxhov siab, nce toughness, thiab kho lub zog. Tempering yog cov txheej txheem tseem ceeb tshaj plaws rau normalizing cov khoom siv ntawm quenched thiab tempered steel. Qhov nkhaus ntawm cov khoom siv ntawm ntau yam steels hloov nrog tempering kub, tseem hu ua tempering nkhaus ntawm steel, yuav siv tau raws li lub hauv paus rau xaiv lub tempering kub. Rau qhov kub-kub tempering ntawm tej alloy quenched thiab tempered steels, yuav tsum tau them nyiaj mloog mus rau tiv thaiv qhov tshwm sim ntawm ob hom temper brittleness los xyuas kom meej lub usability ntawm cov hlau. [2]

quenching thiab tempering kev kho mob yog dav siv rau cov yam ntxwv qhov chaw uas yuav tsum tau zoo heev kev ua tau zoo, tshwj xeeb tshaj yog cov uas ua hauj lwm nyob rau hauv alternating loads, xws li automotive shafts, zog, turbine shafts ntawm aircraft engine, compressor discs, thiab lwm yam. Cov yam ntxwv steel qhov chaw uas yuav tsum tau induction cua sov quenching feem ntau yog quenched thiab tempered ua ntej nto quenching kom tau ib tug nplua thiab zoo sorbate, uas yog zoo rau lub nto hardening txheej thiab kuj muaj peev xwm ua tau zoo txhua yam khoom ntawm lub hauv paus. Nitride qhov chaw raug quenching thiab tempering kho ua ntej nitriding, uas tuaj yeem txhim kho kev ua haujlwm ntawm cov hlau thiab npaj cov qauv rau nitriding. Txhawm rau kom ua tiav qhov siab du ntawm cov cuab yeej ntsuas ua ntej quenching, tshem tawm kev ntxhov siab los ntawm kev ua haujlwm ntxhib, txo quenching deformation, thiab ua kom lub hardness tom qab quenching siab thiab uniform, quenching thiab tempering kev kho mob yuav tsum tau nqa tawm ua ntej precision machining. Rau cov cuab yeej steel nrog network carbides los yog coarse nplej tom qab forging, quenching thiab tempering kev kho mob yuav siv tau los tshem tawm cov carbide network thiab refine cov nplej, thaum spheroid zing carbides los txhim kho machinability thiab npaj cov microstructure rau kev kho cua sov zaum kawg.

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