Tsib yam cuam tshuam rau tus nqi nqus ntawm Carburizer yuav tsum tau khaws cia hauv siab

1. Kev cuam tshuam ntawm particle loj ntawm carburizer
Cov txheej txheem carburizing siv carburizing tus neeg sawv cev suav nrog cov txheej txheem dissolution diffusion thiab txheej txheem oxidation poob. Qhov luaj li cas ntawm cov carburizer sib txawv, thiab qhov sib txawv diffusion tus nqi thiab oxidation poob tus nqi kuj txawv. Cov qib ntawm qhov nqus ntawm cov carburant nyob ntawm qhov sib xyaw ua ke ntawm kev sib xyaw thiab qhov sib txawv ntawm cov carburant thiab oxidation poob tus nqi: feem ntau, cov carburant hais me me, qhov tawg tau nrawm, thiab qhov poob yog loj. ; Lub carburizer muaj qhov loj me me, qeeb dissolution tus nqi thiab qhov poob me me. Kev xaiv ntawm qhov loj me ntawm lub carburizer yog cuam tshuam nrog txoj kab uas hla thiab lub peev xwm ntawm lub cub tawg. Feem ntau, txoj kab uas hla thiab lub peev xwm ntawm lub cub tawg yog qhov loj, thiab qhov loj ntawm lub carburizer yog loj dua; Ntawm qhov tsis sib xws, qhov me me ntawm carburizer yog me dua. Rau 1t lossis tsawg dua hluav taws xob rauv smelting siv lead ua graphite particle loj ntawm 0.5 ~ 2.5mm; 1t ~ 3t hluav taws xob rauv smelting siv lead ua graphite particle loj ntawm 2.5 ~ 5mm; 3t ~ 10t hluav taws xob rauv smelting siv lead ua graphite particle loj ntawm 5.0 ~ 20mm; Npog nyob rau hauv lub ladle siv lead ua graphite particle loj ntawm 0.5 ~ 1mm.
2. Qhov cuam tshuam ntawm qhov nyiaj ntawm carburizer ntxiv
Nyob rau hauv tej yam kev mob ntawm ib tug tej yam kub thiab tib yam tshuaj muaj pes tsawg leeg, saturation concentration ntawm carbon nyob rau hauv kua hlau yog tej yam. Max rau kev sib cais ntawm carbon hauv cam khwb cia hlau (feem pua ​​[C] {{0}}.3 ntxiv rau 0.0257 T - 0.31 feem pua ​​[Si] 0.33 [P] feem pua ​​​​0.45 ntxiv rau 0.028 [% S] [Mn feem pua] rau molten hlau kub (T). Nyob rau hauv ib tug tej yam saturation, qhov ntau npaum li cas ntawm carburizer ntxiv, lub sij hawm ntev yuav tsum tau rau dissolution thiab diffusion, qhov ntau dua qhov sib txuam poob, thiab qhov nqus nqus yuav raug txo.
3. Qhov cuam tshuam ntawm qhov kub thiab txias ntawm qhov nqus ntawm carburizer
Los ntawm qhov pom ntawm kinetics thiab thermodynamics, oxidation ntawm cov kua hlau muaj feem xyuam rau qhov sib npaug ntawm C-Si-O system, uas yog, O hauv cov kua hlau yuav hnov ​​​​mob nrog C thiab Si. Qhov sib npaug kub sib txawv nrog cov ntsiab lus ntawm lub hom phiaj C thiab Si. Thaum qhov sib npaug ntawm qhov sib npaug ntawm cov kua hlau saum toj no, oxidation ntawm cov pa roj carbon zoo dua tshwm sim, thiab C thiab O tsim CO thiab CO2. Ua li no, cov pa roj carbon oxidation poob hauv cov kua hlau nce. Yog li ntawd, thaum qhov sib npaug ntawm qhov ntsuas kub saum toj no, qhov nqus ntawm carburizer txo qis. Thaum qhov kub ntawm carburizing qis dua qhov sib npaug ntawm qhov sib npaug, qhov saturated solubility ntawm cov pa roj carbon monoxide txo qis vim qhov kub thiab txias, thiab qhov kev sib cais thiab qhov sib txawv ntawm cov pa roj carbon tsawg dua, yog li cov yield kuj qis dua. Ntawm qhov sib npaug ntawm qhov sib npaug, qhov nqus ntawm carburizer yog siab dua.
4. Lub zog ntawm cov kua hlau nplawm ntawm qhov nqus ntawm carburizer
Kev sib xyaw ua ke yog qhov tsim nyog rau kev sib cais thiab nthuav tawm ntawm cov pa roj carbon monoxide, kom tsis txhob muaj cov carburizer ntab rau saum npoo ntawm cov kua hlau kom hlawv. Ua ntej lub carburizer yog yaj tag, lub sijhawm nplawm yog ntev thiab qhov nqus tau siab. Stirring kuj tseem tuaj yeem txo cov carburization tuav lub sij hawm, ua kom luv lub voj voog ntau lawm, thiab zam kev kub hnyiab ntawm cov ntsiab lus alloying hauv cov kua hlau. Txawm li cas los xij, lub sijhawm nplawm ntev dhau lawm, tsis yog tsuas yog muaj kev cuam tshuam zoo rau lub neej kev pabcuam ntawm lub cub tawg, tab sis kuj tom qab lub carburizer yaj, lub nplawm yuav ua rau qhov poob ntawm cov pa roj carbon ntau hauv cov kua hlau. Yog li ntawd, qhov tsim nyog stirring lub sij hawm ntawm cov kua hlau yuav tsum tau xyuas kom meej tias lub carburizer yog yaj tag.
5. Kev cuam tshuam ntawm cov tshuaj muaj pes tsawg leeg ntawm cov hlau liquefaction ntawm kev nqus ntawm carburizer
Thaum cov ntsiab lus ntawm cov pa roj carbon ntau hauv cov kua hlau yog siab, ntawm qhov kub thiab txias, qhov nqus ntawm carburizer qeeb, qhov nqus tau me me, qhov kub hnyiab yog qhov loj, thiab qhov nqus ntawm carburizer yog tsawg. Thaum thawj cov ntsiab lus ntawm cov pa roj carbon cov ntsiab lus ntawm cov kua hlau yog tsawg, qhov opposite yog qhov tseeb. Tsis tas li ntawd, silicon thiab sulfur hauv cov kua hlau cuam tshuam qhov nqus ntawm carbon thiab txo qhov nqus ntawm carburizer; Manganese pab txhawb kev nqus ntawm carbon thiab txhim kho tus nqi nqus ntawm carburizer. Hais txog qib ntawm kev cuam tshuam, silicon yog qhov loj tshaj plaws, ua raws li manganese, thiab carbon thiab sulfur muaj tsawg zog. Yog li ntawd, hauv cov txheej txheem tsim khoom tiag tiag, manganese yuav tsum tau ntxiv ua ntej, tom qab ntawd carbon, thiab tom qab ntawd silicon.