Kab lus no coj los rau koj los ntawm Xi'an Huachang, ib tug ua cov chaw tsim khoom ntawm hluav taws xob arc, lub rauv taws ua kom sov, Submery Refining Rauvkhoom siv.
Hauv steelmaking, lub lule rauv (Tshob Refining Rauv) Ua si lub luag haujlwm tseem ceeb hauv kev ua kom zoo dua Molten hlau los ntawm kev kho nws cov tshuaj muaj pes tsawg leeg, txias thiab huv si. Ib qho ntawm cov txheej txheem tseem ceeb hauv chav ua kom sov nyob rau hauv cov av hlau ua rau txhim kho homogenization, thiab txhim kho cov hlau tsis zoo.
Ib lo lus nug uas nquag muaj nyob hauv Metallurgy yog: uas siv roj yog siv rau kev ntxuav tawm hauv lub tsev rauv taws? Cov lus teb feem ntau yog nyob ntawm cov qib steel raug tsim tawm, cov kev txiav txim siab tus nqi, thiab cov txiaj ntsig tau ntxim nyiam. Cov ntawv no tshawb txog cov roj av siv rau cov pa taws ua kom sov huv si, lawv cov haujlwm, qhov zoo, thiab kev lag luam zoo tshaj plaws.
Thawj lub roj siv siv rau looj kev ua kom sov rauv
Feem ntau cov feem ntau siv cov roj av hauv chav ua kom sov yog:
- Argon (ar)
- Nitrogen (n₂)
- Sib xyaw ntawm Argon thiab Nitrogen
Txhua cov roj muaj cov khoom sib txawv uas ua rau nws haum rau cov ntawv thov statmaking tshwj xeeb.
Argon (ar) - qhov kev xaiv uas nyiam tshaj plaws rau cov hlau zoo
Argon yog cov roj uas dav tshaj plaws hauv cov roj av ua kom muaj zog ua kom huv, tshwj xeeb tshaj yog cov khoom lag luam qib siab xws li:
Stainless hlau
Alloy Steels
Tsawg-carbon thiab ultra-beel carbon hlau
Vim li cas Argon zoo tagnrho rau purging?
-
Chemically inert: tsis cuam tshuam nrog Molten hlau, tiv thaiv kev tsis xav nitrogen lossis hydrogen pickup.
- Ua tau zoo heev stirring: muab cov kev sib xyaw ua ke ntawm cov khoom siv alloy thiab qhov kub thiab txias homloy.
- Inllusion Kev Tshem Tawm: Pab ntab tsis yog xim hlau suav (piv txwv li, oxides, sulfides) mus rau txheej slag.
- Decarburization tswj: Tsis zoo li nitrogen, argon tsis cuam tshuam rau cov roj carbon.
Qhov tsis zoo ntawm Argon
Siab dua tus nqi piv rau nitrogen.
Muaj tsawg tsawg nyob rau hauv qee thaj chaw.
Cov nqi ntws tawm rau kev ua kom muaj kev sib cav sib ceg
Clorring: 50-150 nl \/ min (li qub li ib feeb)
Kev ua kom huv si: Txog 300 NL \/ Min rau Degassing sib sib sib zog nqus
Nitrogen (n₂) - txoj kev xaiv tus nqi zoo
Nitrogen feem ntau yog siv los ua tus nqi qis dua rau kev sib cav, tshwj xeeb hauv kev tsim cov:
Cov Hlau Kho
Qee cov hlau qis-alloy
Cov hlau uas nitrogen tuaj yeem siv tau
Qhov zoo ntawm nitrogen purging
Tus nqi qis dua: Nitrogen yog pheej yig dua thiab muaj kev loj hlob ntau dua li Argon.
Ua tau zoo heev stirring: sib xyaw zoo sib xyaw ua ke rau argon.
Nitrogen alloy: Hauv qee cov hlau (piv txwv li, high-nitrogen instusteritic stainless hlau), nitrogen tuaj yeem ua tau txiaj ntsig zoo.
Qhov tsis zoo ntawm nitrogen purging
Nitrogen Pickup: tuaj yeem nce cov ntsiab lus nitrogen hauv steel, ua rau brittleness hauv qee qib.
Tsis tsim nyog rau txhua tus steels: tsis tsim nyog rau ultra-latco-latco-l Carra-lat-beelbon lossis tej yam stainless hlau uas nitrogen tsis zoo.
Thaum twg siv nitrogen es tsis txhob aregon?
Rau cov pa roj carbon hlau uas nitrogen nqus tsis yog qhov tseem ceeb.
Thaum txo nqi them yog qhov tseem ceeb.
Argon-nitrogen mixtures - ntsuas tus nqi thiab kev ua tau zoo
Qee tus steelmakers siv Argon-nitrogen blends los ua kom zoo nqi thiab ua tau zoo. Qhov sib piv yog nyob ntawm tus qauv hlau:
80% ar + 20}% n₂: Rau cov hlau uas muaj mob nitrogen cia.
50% ar + 50}% n₂: Rau cov ntawv thov raug nqi uas muaj kev tos nitrogen me me.
Yuav ua li cas ntxuav ua haujlwm nyob rau hauv ib tug ntaiv rauv taws
Cov txheej txheem lim tshuaj yuav txhaj roj los ntawm cov roj plug cov ntsaws lossis tuyeres teeb rau hauv qab ntawm lub tsev. Cov roj nce los ntawm cov hlau Molten, tsim:
Stirringing nyhuv: kom sawv daws cov khaub ncaws kub thiab muaj pes tsawg leeg.
Slag-hlau kev sib cuam tshuam: txhim kho desulfurization thiab suav kev tshem tawm.
Degassing: Pab tshem tawm cov kab mob hydrogen thiab nitrogen.
Cov kev tsis cuam tshuam cuam tshuam rau kev ua kom muaj nuj nqis
- Roj Flow tus nqi - dhau tsawg dhau =}} tsis txaus ntseeg; Siab heev =}}} kev sib tw swb ntau dhau.
- Porous Plug tsim - cuam tshuam rau npuas loj thiab xa tawm.
- Kev sib xyaw slag - cuam tshuam cov txiv lws suav thiab cov pa oxygen.
Kev Lag Luam Zoo Tshaj Kev Coj Rau Ladle Rauv Thiaj
- Siv Argon rau cov hlau siab siab
Qhov tseem ceeb rau cov tsis muaj hluav taws xob, hluav taws xob, thiab cov roj carbon tsawg.
- Nitrogen rau cov nqi-ua tau zoo stirring
Haum rau cov roj carbon hlau uas nitrogen tuaj tos tsis yog qhov teeb meem.
- Txhim kho cov pa roj txaus kom tiv thaiv kom tsis txhob muaj slag entrapment
Ntau dhau ntawm bubbling yuav ntxig slag hauv steel, txo qis huv.
- Saib xyuas cov ntsiab lus nitrogen hauv cov qib
Tsis txhob muaj nitrogen-induced brittleness hauv qee yam alloys.
- Kev tu ib txwm ntawm kev ntxuav cov plug
Clogged Plugs Txo cov txiaj ntsig zoo thiab nce zog siv hluav taws xob.
Qhov kev xaiv ntawm cov roj ua kom huv ntawm cov teeb ci ntsa iab yog nyob ntawm qib tus, nqi, thiab metallurgical yuav tsum tau. Argon yog tus qauv kub rau cov hlau zoo, thaum Nitrogen muab cov nyiaj txiag rau cov khoom siv roj carbon. Qee cov nroj tsuag siv cov khoom sib xyaw argon-nitrogen mixtures rau sib npaug thiab raug nqi.
Kev tsim kom muaj roj kom raug, ntws tswj, thiab kev txij nkawm yog qhov tseem ceeb rau kev ua tiav cov qauv hlau zoo nkauj, homogeneity, thiab refining efficiency.
Ntawv Sawv cev
Ghoosh, A., & Chlauslimee, A. (2008).Ironmaking thiab steelmaking: txoj kev xav thiab kev coj uaCov. PHI kev kawm.
Fruehan, RJ (1998).Kev ua, shaping, thiab kho cov hlauCov. Lub hauv paus pib ntawm steel.
Turkdogan, thiab (1996).Cov qauv ntawm steelmakingCov. Lub koom haum ntawm cov ntaub ntawv.
Los ntawm kev nkag siab lub luag haujlwm ntawm cov pa roj carging hauv chav tsev pheeb suab, steelmakers tuaj yeem ua kom zoo dua cov txheej txheem ua kom zoo dua qub.
Tiv Tauj Peb
Xi'an Huachan Metallurgical Technical Technology Co., Ltd.
Chaw Nyob: 9 pem teb, tsev C \/ Vanmetropolis, No.1 Tangyan Rd. Gaoxin District, Xi'an, Shaanxi Xeev, Suav
Tel: +86 029 8886 4421
Mob & Wechat & Whatsapp: +86 18729567376
Fev: +86 029 8886 2650
E-mail:sales3@xahcdl.com/ candiceyang@xahcdl.com
Lub Vev Xaib:www.hc-fnace.com
Kom paub meej ntxiv, tiv tauj peb rau cov kev daws teeb meem siab hauv cov tshuab ua kom zoo dua!