(1). Tsawg ceev: nrawm 2m / s, chav ntsuas siab 350-600n / hli ^ 2.
(2). Nruab Nrab nrawm: kev sib hloov nrawm 2-6m / s, chav ntsuas 100-1000n / hli ^ 2, cov khoom thauj me me.
(3) qhov siab ceev: tig nrawm 4-12m / s, loj khoov siv zog, chav tsev siab 200-700n / hli ^ 2.
2. Iav cov ntaub ntawv thiab kev kho kub siv feem ntau hauv cov cuab yeej siv tshuab:
(1) 45 quenching, qhov kub thiab txias tsis zoo, hb200-250, rau kev ceev ncig< 1m="" s="" nruab="" nrab="" lub="" siab,="" siab="" zaus="" quenching,="" sab="" saum="" npoo="" hardness="" hrc52-58,="" rau="" cov="" khoom="" uas="" muaj="" qhov="" nruab="" nrog="" siab="" ntawm="" qhov="" chaw="" muaj="" lub="" siab="" tawv="" thiab="" deformation="">
(2) 20Cr carburizing, quenching, tsis kub tsis txias txias hrc56-62, rau kev kub ceev, siab, nruab nrab, thiab rau cov iav kev cuam tshuam.
(3) 40Cr quenching thiab tempering, hb220-250, rau cov iav nrog qhov ntsuas me me thiab qhov nruab nrab ntawm lub siab, quenching thiab tempering, hrc40-50, rau cov iav nrog qhov nruab nrab ceev thiab qhov cuam tshuam me me.
(4) ntxiv rau cov xwm txheej saum toj no, kev ua haujlwm siab quenching thiab hardness hrc52-58 yuav tsum tau siv yog tias deformation thaum kho cua sov yuav tsum muaj tsawg.
3. Cov kev ua haujlwm ntawm lub tsheb thiab lub tsheb laij teb cov tsheb sib tsoo ntau dua li kev siv tshuab cav, hnav tsis kam, qaug zog lub zog, lub zog tseem ceeb thiab kev cuam tshuam ntawm lub zog yog qhov siab dua lub tshuab iav. Yog li ntawd, qhov hnyav thiab qhov feem cuam thauj khoom siv feem ntau siv cov pa roj carbon hlau tsawg dua (ntxiv rau cov npe ntawm cov npe, muaj 20 mnmob, 20 simnvb, 30 crmnti, 30 mntib, 20 mntib, thiab lwm yam), los ntawm carburizing, quenching thiab tsawg kub tempering ua. Lub tsheb laij teb kawg lub zog ntawm qhov kis tau tus mob lub zog loj, cov hniav ntawm chav tsev siab yog qhov siab dua, kev sib khi tsis zoo, cov av xuab zeb, cov av qaub yog qhov yooj yim mus, nrog kev ua haujlwm tsis zoo, feem ntau siv20CrNi3A isocarburization.
4. Cov ntaub ntawv siv feem ntau ntawm cov khoom siv kho tshuab dav dav yog 45 thiab 40Cr, thiab cov txheej txheem kho cua sov tau xaiv raws li hauv qab no:
(1) zuag qhia tag nrho;Lub zog thiab tawv tawv (hrc50-55) tau zoo dua, cov kabmob muaj peev xwm nce ntxiv, tab sis qhov nro ua kom tsawg dua, thiab qhov deformation tau loj. Tom qab quenching, cov hniav yuav tsum tau grinded los yog grinded.
(2) tempering: vim qhov tsis tshua muaj lub zog, tawv tsis siab dhau, tsis tuaj yeem siv rau qhov kev cuam tshuam loj ua haujlwm, tsuas yog rau kev nrawm qis, nruab nrab load iav, ib khub ntawm tempering iav pinion nto hardness yog siab dua qhov loj hniav loj hardness hb25-40.
(3) normalizing: nws tsis haum rau qhov loj diam iav rau quenching thiab tempering vim kev mob.
(4) saum npoo quenching: 45, 40Cr high-zaus quenching tshuab cuab tam siv dav, qhov taub yog loj dua li nplaim taws quenching. Txawm li cas los xij, vim muaj qhov cuam tshuam loj siab rau lub iav tsis yooj yim txaus, kev siv cov roj carbon steel qis (cuam tshuam, thauj me me thiab nruab nrab) lossis qis carbon cov hlau tsis zoo (cuam tshuam, hnyav thauj) carburizing.