Recarburizer yog dab tsi?
Hauv metallurgy, carburizes yog cov tshuaj uas, thaum lub sij hawm tsim khoom, ntxiv carbon rau molten hlau. Nws feem ntau yog siv los hloov cov ntsiab lus carbon thiab txhim kho qhov zoo ntawm cov khoom tiav thaum lub sij hawm tsim cov hlau thiab cam khwb cia hlau.
Feem ntau, carbon- cov ntaub ntawv nplua nuj xws li roj av coke, thee, lossis graphite yog siv los ua carburizers. Ua ntej muab ntxiv rau cov hlau molten, cov khoom no raug kho thiab pulverized rau hauv cov hmoov zoo los yog granules. Cov hlau molten cov pa roj carbon monoxide nce siab vim yog cov carburizer cov pa roj carbon sib cuam tshuam nrog nws, txhim kho nws cov khoom zoo xws li lub zog thiab hardness.
Classification ntawm Recarburizer
Muaj ntau hom carburizing agents, nyob ntawm seb cov khoom siv: graphitized petroleum coke, graphitized columnar graphite, graphitized semi-graphite, metallurgical coke, calcined thee, composite material, graphitized petroleum coke, thiab natural graphite.
Petroleum coke carburizer: Ib qho khoom tau los ntawm roj av refining, roj av coke yog cov pa roj carbon ntau. Nws nquag siv los ua tus neeg sawv cev carburizing vim nws cov pa roj carbon ntau thiab qib impurity tsawg. Petroleum coke carburizer yog renowned rau nws zoo ib yam thiab siab npaum li cas ntawm carbon rov qab.
Coal -raws li carburizing tus neeg sawv cev: Coal yog raw khoom siv los ua tus neeg sawv cev no; Tom qab ntawd nws yog ua tiav thiab pulverized rau hauv cov khoom zoo los yog hmoov. Nyob rau hauv lub foundry sector, thee recarburizers tau siv dav thiab muaj npe nrov rau lawv cov nqi pheej yig thiab siv tau.
Graphite carburizer: Ib hom carbon uas muaj txheej txheej siv lead ua hu ua graphite. Graphite carburizers tuaj yeem tsim los ntawm hluavtaws lossis ntuj graphite. Lawv cov ntsiab lus carbon siab, cov ntsiab lus tsis zoo, thiab cov thermal conductivity zoo dua yog cov yam ntxwv paub zoo.
Anthracite carburizer: Anthracite yog ib qho qis - cov teeb meem tsis hloov pauv nrog cov pa roj carbon ntau. Anthracite thee, uas muaj qib sulfur tsawg thiab cov pa roj carbon ntau, yog siv los ua anthracite carburizer.
Cov yam ntxwv ntawm Recarburizer
1. Cov ntsiab lus carbon: Cov ntsiab lus tseem ceeb ntawm cov khoom siv rov ua dua tshiab yog cov pa roj carbon monoxide, uas yog tsim nyog los txhawb cov hlau cov ntsiab lus carbon. Cov pa roj carbon monoxide recarburizer tuaj yeem hloov pauv raws li cov ntawv thov tshwj xeeb thiab cov qib carbon uas yuav tsum tau ua hauv cov khoom tiav.
2. Cov Khoom Siv: Coal, roj av coke, thiab graphite yog qee yam khoom siv los ua recarburizer. Cov ntsiab lus carbon uas xav tau, tus nqi, thiab qhov muaj nyob txhua qhov cuam tshuam rau kev xaiv cov khoom siv.
3. Particle Size: Recarburizer tuaj nyob rau hauv ntau qhov ntau thiab tsawg, los ntawm cov granules loj mus rau cov hmoov me me. Tus nqi ntawm carbon absorption thiab nws qhov kev faib tawm hauv cov hlau molten yog cuam tshuam los ntawm qhov loj ntawm cov khoom.
4. Chemical Composition: Recarburizers tej zaum yuav muaj cov sulfur, tshauv, thiab cov khoom volatile ntxiv rau carbon. Kev ua tau zoo thiab kev sib raug zoo ntawm recarburizers nrog ntau yam hlau alloys tuaj yeem cuam tshuam los ntawm lawv cov tshuaj pleev ib ce.
5. Hluav taws xob Conductivity: Cov hluav taws xob conductivity ntawm lub recarburizer yog qhov zoo, uas yog qhov tseem ceeb rau qee cov txheej txheem metallurgical uas nyob ntawm cov hluav taws xob tiv thaiv cua sov.
Corrosion Resistance: Ob peb recarburizers muaj lub koob npe nrov rau kev tiv thaiv corrosion, suav nrog calcined anthracite. Thaum cov hlau siv rau hauv qhov chaw tsis sib haum xeeb thiab xav tau los tiv thaiv corrosion, qhov no tuaj yeem ua tau zoo.
Xaiv lub carburizer: Dab tsi zoo qhov txawv qhov zoo tshaj carburizer?
Tus neeg sawv cev carburizing muaj qhov loj me me, qhov porosity siab, yooj yim ntawm melting, thiab nqus sai sai.
Muaj qee qhov muaj kev phom sij tsawg, qhov nqus tau siab, tsis tshua muaj leej faj thiab nitrogen cov ntsiab lus, cov pa roj carbon ntau hauv lub tebchaws, thiab cov ntshiab thiab feem ntau impurity -dawb tshuaj pleev.
Cov graphite tiav tuaj yeem txhim kho cov kua hlau nyoos lub peev xwm rau nucleate thiab muaj cov qauv siv lead ua zoo.
Zoo stability thiab functionality.
Hlau smelting chaw thiab foundries tuaj yeem tau txais txiaj ntsig kev lag luam los ntawm kev xaiv tus neeg sawv cev tsim nyog carburizing, vim nws tsis tsuas yog txo cov nqi tsim khoom tab sis kuj txhim kho qhov zoo ntawm cov hlau smelted thiab castings.
Qhov zoo ntawm Recarburizer
Kev kho carbon: Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm carburizer yog nws lub peev xwm los hloov cov hlau molten cov pa roj carbon concentration. Txhawm rau ua cov hlau thiab cam khwb cia hlau nrog cov ntsiab lus carbon raug, cov ntsiab lus carbon tuaj yeem raug tswj hwm los ntawm kev ntxiv carburizes. Qhov no pab ua kom tau raws li qhov xav tau kev ua tau zoo thiab kev ua haujlwm zoo ntawm cov khoom tiav.
Txhim kho metallurgical zoo: Carburizing chemicals tuaj yeem txhim kho cov khoom kawg lub zog, hardness, thiab tsis kam hnav los ntawm kev txhim kho cov khoom siv hlau ntawm cov hlau. Tsis tas li ntawd, carburizers pab txo qis kev tsim cov theem tsis xav tau thiab txhim kho cov hlau microstructure.
Ua kom qhov kev txwv tsis pub muaj hluav taws: Cov pa roj carbon activated yog ib qho carburizer uas muaj cov txiaj ntsig ntawm kev ua kom cov nplaim hluav taws tsis zoo. Qhov no txhais tau hais tias lawv tuaj yeem txhim kho kev ruaj ntseg thiab kev ua haujlwm ntawm cov hlau combustion thaum cov txheej txheem tshwj xeeb metallurgical.
Ceev lim: Ib qho txiaj ntsig ntawm cov hmoov carburizing cov neeg ua haujlwm yog lawv cov kev pom sai, zoo li cov hmoov ua kom cov pa roj carbon monoxide. Qhov no yuav pab nrog cov txheej txheem uas yuav tsum tau lim molten hlau sai sai kom tshem tawm cov kab mob.
Corrosion kuj: Qee cov carburizers, suav nrog calcined anthracite, tiv taus corrosion. Qhov no yuav pab tau nyob rau hauv cov xwm txheej thaum cov hlau yuav tsum tiv thaiv corrosion nyob rau hauv tej yam kev mob nyuaj.
Workflow efficiency: Metallurgical kev ua haujlwm uas ntiav carburizers muaj kev ua haujlwm ntau dua. Nws tuaj yeem lav qhov kev ua haujlwm yooj yim thiab ua haujlwm tau zoo, txo cov sijhawm ua haujlwm, thiab txhim kho kev nyab xeeb.
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