Kev tsom xam dav ntawm 70% -75% cov ntsiab lus silicon ferrosilicon alloy

Hlau, raws li lub pob zeb ntawm kev lag luam niaj hnub, yog siv dav siv hauv kev tsim kho, kev thauj mus los, kev lag luam, machinery kev tsim khoom, thiab lwm daim teb. Los ntawm kev tiv thaiv skyscrapers rau high- Cov tsheb ciav hlau ceev, los ntawm cov khoom thauj loj, los ntawm cov haujlwm loj, txhawb kev ua haujlwm ntawm lub zej zog niaj hnub. Nws yog tsis muaj exaggeration hais tias tsis muaj hlau, kev txhim kho kev lag luam niaj hnub yuav nyuaj heev. Nyob rau hauv cov txheej txheem complex ntawm steel smelting, 70% -75% silicon cov ntsiab lusferrosilicon alloyUa si lub luag haujlwm tseem ceeb, tiag ib qab --} scenes hero. Thaum zoo li dog dig, nws plays lub luag haujlwm tseem ceeb hauv kev ua tau zoo thiab ua tau zoo ntawm cov hlau, cuam tshuam ncaj qha rau nws cov ntawv thov hauv ntau thaj teb.

(I) kev sib xyaw thiab cov yam ntxwv

Raws li lub npe qhia, lub ntsiab Cheebtsam ntawm 70% -75% silicon cov ntsiab lus fesi alloy yog silicon (Si) thiab hlau. Nyob rau hauv no hom ntawm alloy, cov ntsiab lus silicon poob nyob rau hauv ntau qhov tseem ceeb ntawm 70% -75%, raws li pom hauv cov alloys sib xws liferrosilicon 70, ferrosilicon 72, thiabferrosilicon 75Cov. Qhov seem tsuas yog muaj hlau thiab kab nqis ntawm lwm cov khoom xws li txhuas (al), calcium (CA). Txawm hais tias cov kab no yog ib feem pua ​​tsawg, lawv muaj qhov cuam tshuam tseem ceeb rau cov alloy cov khoom.

(II) Cov Txheej Txheem Ntau Lawm Txheej txheem cej luam

Cov txheej txheem ntau lawm ntawm 70%-}} 75% silicon-cov ntsiab lus ferrro silicon alloys yog ib cov txheej txheem nyuaj, tam sim no feem ntau ua haujlwm hluav taws xob rauv hluav taws xob smelting. Cov khoom siv raw tsuas yog suav nrog silica, coke, thiab steel scrap. Silica yog thawj qhov chaw ntawm silicon, xav tau lub siab silicon dioxide (sitio) cov ntsiab lus, feem ntau saum toj 97%, txhawm rau xyuas kom meej cov mov ci rau cov alloy. Coke, raws li tus neeg sawv cev txo qis, ua lub luag haujlwm tseem ceeb hauv cov txheej txheem smelting, xav tau cov ntsiab lus siab carbon monoxide thiab cov tshauv qis thiab cov ntsiab lus tsis muaj teeb meem; Feem ntau, cov ntsiab lus carbon ruaj khov yuav tsum mus txog 85% kom txo tau kom zoo dua li ntawm silica ntawm silica ntawm silica ntawm silica ntawm qhov kub. Steel scrap muab cov hlau rau cov hlau mus rau alloy thiab kuj tseem pab kho nws cov khoom thiab cov khoom.

Thaum kev tsim khoom, cov ntaub ntawv raw yuav tsum ua ntej ua ntej - kho. Silica yog crushed rau hauv qhov ntau thiab tsawg los xyuas kom muaj kev tiv thaiv txaus thaum smelting. Cov Coke kuj yuav tsum tau tshuaj ntsuam thiab ua tiav kom tshem tawm impurities thiab ua kom muaj kev ruaj khov zoo. Tom qab ntawd, silica, coke, thiab steel scrap yog sib piv nyob rau hauv ib qho kev sib piv, uas yuav tsum tau kom muaj kev sib xyaw ntawm lub hom phiaj ferrosilicon alloy thiab qhov tseeb ntawm cov khoom siv raw. Npaj cov ntaub ntawv raw yog ntxiv rau lub cub hluav taws xob. Thaum kub siab, coke thiab silica yauv mus rau cov tshuaj tiv thaiv kev txo qis, txo cov silicon dioxide hauv cov silica rau kev ua ntu zus. Lub keeb kwm no silicon ces fuses nrog hlau nyob rau hauv cov steel scrap, maj mam sib sau ua ferrosilicon alloy. Thaum lub alloy nce mus txog cov kev ua tiav thiab ntsuas kub, nws tau muab tshem tawm los ntawm lub rurricon cov ntsiab lus ferrosilicon alloy khoom.

(I) hauv -} qhov tob ntawm qhov chaw deagidation

Hauv cov txheej txheem statmaking, oxygen nyob rau hauv hlau me nyuam yog ib qho tseem ceeb cuam tshuam rau cov hlau zoo. Cov pa roj ntau dhau tuaj yeem ua rau muaj qhov tsis xws luag thiab txoj kev ntshaw ua kom lub zog, txo lub zog, ua rau xeb tawm ntawm cov hlau. Ferrosilicon alloy nrog 70% -75% cov ntsiab lus silicon, raws li deoxidizer, tuaj yeem tshem tawm cov pa tawm ntawm cov hlau molten. Nws lub ntsej muag deoxidation yog raws li cov tshuaj tiv thaiv kev siv tshuaj ntawm silicon thiab oxygen.

Thaum lub ferrosilicon alloy yog ntxiv rau Molten Steel hlau, silicon (Si) reacts ntawm oxygen nyob rau hauv lub molten steel. Hauv qhov tshuaj tiv thaiv no, silicon atoms sib txuas nrog oxygen atoms los ua silicon dioxide (sitio₂). Silicon Dioxide muaj lub siab melting taw tes, feem ntau nyob ib ncig ntawm 1710 degree, thiab muaj nyob rau hauv ib tug khoom siv los yog kua hauv nruab nrab ntawm molten hlau. Vim tias silicon dioxide yog tsis tshua muaj tuab dua Molten Steel floats mus rau saum npoo ntawm kev sib nplawm ntawm cov tawv nqaij

(II) Qhov tseem ceeb tshaj plaws piv rau lwm tus deoxidizers

Hauv steelmaking, dhau ntawm ferrosilicon alloys nrog 70% -75% cov ntsiab lus silicon, feem ntau siv deagidizers suav nrog ferromanganese thiab txhuas. Piv rau cov deoxidizers, ferrosilicon alloys muaj ntau yam zoo.

Ferrosilicon alloys muaj lub peev xwm muaj peev xwm muaj zog.

Ntawm Molten Steel Kub ntawm 1600 DEGREE, lub DEIGIDITY LOS NTAWM siventalgen tsis sib xws thiab tuaj yeem ua ke ntau dua nrog thiab tshem tawm cov pa los ntawm cov hlau molten. Cov ntaub ntawv sim qhia tau qhia tau hais tias, raws li kev mob ib yam nkaus, kev ua haujlwm debidiciency ntawm ferrosilicon alloy yog 20% ​​-30% siab dua li ntawm ferromanganese. Ntxiv mus, ferrosilicon alloy reacts nrog oxygen ntau sai dua, txo cov xim roj oxygen hauv Molten steel nyob rau hauv lub sijhawm luv thiab txhim kho ntau dua qub.

Ferrosilicon alloy muaj tus nqi hloov tau.

Ferromanganese muaj cov txheej txheem sib txawv thiab ntau dua cov khoom siv raw ntau dua, ua rau tus nqi tseem ceeb. Thaum txhuas, raws li deoxidizer, tau muaj zog deoxidation muaj peev xwm, nws tus nqi muaj zog thiab tus nqi yuav raug khib thaum siv cov nqi ntau lawm. Nyob rau hauv kev sib piv, ferrosilicon alloy muaj cov txheej txheem ua tsim khoom me me, dav muaj cov ntaub ntawv raw, thiab tus nqi qis dua thiab pheej yig. Raws li cov neeg lag luam cov nqe txheeb cais, tus nqi ntawm ferrosilicon alloy feem ntau yog 10%-20% qis dua li ferromanganese thiab 30% qis dua aluminium. Qhov no tso cai tso cai steel tuam txhab kom haum rau cov nqi ntau lawm thiab txhim kho kev lag luam ua haujlwm thaum siv ferrosilicon alloy ua deoxidizer.

Lwm qhov zoo ntawm ferrosilicon alloy

Suav nrog kev txhim kho qhov zoo ntawm Molten hlau thaum deoxidizing. Silicon yog cov khoom siv tau zoo. Thaum muaj alloy ferrosilicon ntxiv rau molten hlau, ntxiv rau deoxidation, ntxiv cov hlau lub zog, hardness, thiab elasticity.

Hauv cov teb steelmaking, ferrosilicon alloys nrog 70% -75% silicon cov ntsiab lus ua rau ntau hom hlau vim lawv cov khoom tshwj xeeb.

 Hauv cov hlau tsim cov qauv hlau, uas yog dav siv nyob rau hauv kev tsim kho, txuas hniav, thiab machinery manufacturing, nruj yuav tsum muab tso rau lub zog thiab tawv. Qhov sib ntxiv ntawm ferrosilicon alloys nrog 70% -75% cov ntsiab lus silicon uas tau txhim kho ntau dua lub zog thiab kev nruj ntawm cov hlau qauv txheem. Thaum cov roj ferrosilicon ntxiv rau Molten Hlau, ua cov khoom siv hluav taws xob nrog cov hlau thiab ua kom muaj zog ntawm cov hlau. Silicon kuj tau kho cov nplej hlau, ua rau cov hlau microstructure ntau yam sib txawv, yog li txhim kho cov tawv ntawm cov hlau.

 Tool Steel yog tsuas yog siv los tsim ntau yam cuab yeej, pwm, thiab ntsuas cov cuab yeej, nrog cov kev xav tau heev rau hardness thiab hnav tsis kam. Ferrosilicon alloys nrog 70% -75% silicon cov ntsiab lus ua lub zog tseem ceeb tshaj plaws, ua kom muaj txiaj ntsig zoo tshaj plaws ntawm cov cuab yeej hlau. Silicon tuaj yeem sib txuas nrog cov pa roj carbon hauv cov hlau ua kom tiav theem li silicon carbide (SIC). Cov kauj vab nyuaj no yog cov khoom siv sib xyaw ua ke hauv cov hlau matrix, zoo li tau suav me me me me me me me lo embedded nyob rau hauv cov hlau, txhim kho cov hlau lub hardness thiab hnav tsis kam.

 Stainless hlau tau dav siv hauv tshuaj, khoom noj khoom haus, thiab cov tsev kho mob vim nws cov ntsiab lus corrosion tsis kam rau hauv stainless hlau tsim los txhim kho nws corrosion tsis kam. Silicon hauv cov hlau stainless tuaj yeem txhawb cov kev sib tw passivation ntawm chromium (CR), ua kom ruaj khov ua zaj duab xis ntawm stainless hlau, yog li txhim kho nws corrosion tsis kam.

(I) Kev tswj kom meej ntawm ntxiv tus nqi

Kev tswj hwm kev tswj hwm ntawm qhov nyiaj ntxiv yog qhov tseem ceeb thaum siv 70% -75% cov ntsiab lus silicon ferrosilicon alloys. Qhov no yuav tsum tau muab xam tau raws li cov ntsiab lus oxygen ntawm Molten Steel thiab cov ntsiab lus. Hauv kev tsim khoom tiag tiag, qhov tseeb oxygen cov ntsiab lus hauv Molten hlau tuaj yeem ntsuas tau siv cov khoom siv hlau txiav txim siab. Tom qab ntawd, tus nqi ntawm ferrosilicon alloy yuav tau txiav txim siab yog txiav txim siab raws li cov tshuaj tiv thaiv stoichiometric thiab cov ntsiab lus silicon ntawm qib steel.

Yog tias ntau ntau ferrosilicon alloy yog ntxiv, cov ntsiab lus silicon hauv cov hlau yuav ntau tshaj tus qauv. Qhov no yuav ua rau tus mob khaub zittleness txias hauv cov hlau, txo qis txo nws qhov kev nruj ntawm cov kub kub thiab ua rau nws muaj peev xwm txhaws. Cov khoom qab zib ntau dhau kuj tseem yuav ua rau lub zog ntawm cov hlau, txo nws cov plaster, thiab cuam tshuam nws cov kev ua tau zoo, thiab cuam tshuam nrog kev ua kom tawg thaum lub sijhawm dov thiab zam txim.

Yog tias muaj silicon me me ntxiv, deoxidation ntawm Molten hlau yuav tsis tiav. Cov txheej txheem oxygen nyob hauv Molten hlau yuav hnov ​​mob nrog lwm cov ntsiab los tsim cov oxide suav, uas yuav txo lub zog, kev ua tau zoo, thiab qaug zog ntawm cov hlau. Nws kuj tseem tuaj yeem ua rau tsis xws luag xws li porosity thiab looseness thaum lub sijhawm ua tiav, cuam tshuam qhov zoo thiab pom ntawm cov hlau.

(II) Qhov tseem ceeb ntawm kev cuam tshuam ntawm kub

Qhov kub yog ib qho tseem ceeb rau cov deoxidation nyhuv ntawm ferrosilicon alloys nrog cov ntsiab lus silicon ntawm 70% -75%. Deagidation yog tshuaj lom neeg cov tshuaj tiv thaiv uas yuav tsum tau ntsuas kub. Feem ntau, nyob rau hauv cov hlau kub ntau ntawm 1580-1650℃ntawm ferrosilicon alloys thiab oxygen nyob rau hauv molten steel olloys tau ua tiav, ua rau muaj kev deoxidation zoo dua qub.

Thaum lub pob zeb molten kub yog tsawg dhau, tus nqi dazidation txo qis qis dua. Qhov no vim tias qis dua cov kev ua haujlwm ntawm cov roj av, txo qhov kev sib tsoo ntawm silicon thiab oxygen atoms, ua rau cov tshuaj tiv thaiv nyuaj los ua kom yooj yim.

Kev kub dhau heev kuj yog kev puas tsuaj rau deoxidation cov tshuaj tiv thaiv. Ntawm ib sab tes, kev kub heev yuav ua rau silicon dioxide (sitio₂) kom decomepe (tso cov pa ntxiv, ua rau lub cev tsis zoo. Ntawm qhov tod tes, qhov kub siab yuav nce cov kev ua ub no hauv cov hlau molten, siv cov ferrosilicon alloy, thiab yog li txo cov deoxidation equiciency.

(Iii) yam yuav tsum tau ntawm kev kho ntshav

Thaum siv ferrosilicon alloys nrog 70% -75% silicon cov ntsiab lus rau deoxidation, silicon dioxide (sitio) shrag yuav tsim tawm. Kev tshem tawm raws sijhawm ntawm qhov no tsim Silicon Dioxide Slag yog qhov tseem ceeb.

Lub xub ntiag ntawm Silica Crag yuav tshwm sim ntau cov kev pheej hmoo noj qab haus huv ntau rau Molten hlau. Yog tias tsis tshem tawm sai sai, nws tuaj yeem ua tiav hauv cov hlau, ua kev tsis - nws yog xim hlau suav nrog. Cov inclusions cuam tshuam txuas ntxiv ntawm tus hlau lub microstructure, txo nws lub zog, kev ua tau zoo, thiab kev ua tau zoo thiab qaug zog. Cov koom ua kuj tuaj yeem ua raws li cov chaw pib ua kom yooj yim tawg thiab ua rau cov hlau tsis ua haujlwm thaum raug rau sab nraud.

Silica Slag kuj cuam tshuam rau cov kua txiv ntawm cov hlau molten. Nws nce viscosity ntawm cov hlau, ua rau nws nyuaj rau cov pwm thaum ua kom tiav xws li ua tsis tiav thiab kaw txias, cuam tshuam rau qhov zoo ntawm cov castings. Cov tsis txaus ntseeg tuaj yeem ua rau tsis tiav hauv qee thaj chaw thaum ua cov khoom loj thiab tsis zoo, txo cov txiaj ntsig, txo cov txiaj ntsig.

Tam sim no, Ferrosilicon alloy kev lag luam yog qhov loj thiab ruaj khov, nrog Suav tuav ib txoj haujlwm tseem ceeb. Txawm li cas los xij, nrog kev nce qib ntawm "dual - cov phiaj xwm kev lag luam" thiab hloov pauv hauv cov kev txhim kho hauv qab kev txhim kho tshiab thiab cov nyom. Yav tom ntej, thev naus laus zis tsim kho yuav dhau los ua tus tsav tsheb loj rau kev lag luam, thiab muaj cov khoom lag luam zoo nkauj ferrosilicon}}