Hauv lub ntiaj teb intricate ntawm steel ntau lawm,calcium siliconTawm los ua kev ua si - hloov lub caij, hloov siab ntau cuam tshuam qhov zoo thiab cov khoom ntawm cov khoom siv steel kawg. Qhov no alloy ua si ntau txoj haujlwm tseem ceeb uas yog qhov tseem ceeb rau cov txheej txheem steelmaking niaj hnub.
Deoxidation: thawj kauj ruam mus zoo steel
Thaum lub sij hawm steelmaking, oxygen yog ib qho kev tsis txaus ntseeg muaj nyob hauv cov hlau Molten. Tshaj dhau cov pa oxygen tuaj yeem ua rau cov teeb meem xws li oxide suav, porosity, thiab poob rau hauv cov hlau cov khoom siv. Casi kauj ruam hauv raws li lub zogdeoxidizerCov. Silicon nyob rau hauv Alloy reacts nrog oxygen los ua silicon dioxide (sitio₂), thaum calcium cov ntawv calcium (cao). Cov oxides tuaj yeem tshem tawm ntawm yaj los ntawm kev swb lossis ntab mus rau saum npoo ntawm cov hlau molten. Los ntawm kev txo cov ntsiab lus oxygen, calcium silicon txhim kho cov hlau lub ntom ntom, lub zog, thiab tawv. Qhov no ua rau cov steel haum rau ntau cov ntawv thov, los ntawm cov hlau muaj zog siv hauv kev tsim vaj tse mus rau lub siab - kev ua tau hlau hauv cov cav hauv tsheb.
Desulfurization: txwv tsis pub ua rau cov tub rog sulfur
Sulphur yog ib qho kev tsim txom impurity hauv cov hlau. Nws ua rau kub brittleness, ua rau cov steel nkig thiab nquag mus tawg thaum lub sijhawm kub thiab txias. Silicon calcium los rau txoj kev cawm seej. Cov tshuaj calcium hauv cov alloy muaj kev muaj zog muaj zog rau cov neeg Sulphur. Thaum ntxiv rau cov hlau Molten, nws kub ntxhov nrog cov leej faj los tsim cov calcium sulfide (CAS). Calcium sulfide muaj lub siab yaj suab thiab yog tsawg soluble hauv cov hlau yaj tshaj li leej faj. Raws li qhov tshwm sim, cov calcium sulfide hais tau tuaj yeem sib cais los ntawm cov hlau los ntawm kev swb lossis lwm txoj hauv kev. Qhov no desulfurization kev ua ntawmcalcium silicon alloyTxhim kho cov hlau lub zog kub ua haujlwm, vuam kev kawm, thiab txhua yam zoo. Nws kom ntseeg tau tias cov hlau tuaj yeem ua kom cov mob hnyav ntawm kev tsim khoom thiab kev siv, txawm hais tias nws yog cov cuab yeej siv loj heev.
Cov kws sau qoob loo: ntxiv dag zog rau cov hlau lub hauv paus
Qhov loj me thiab qauv ntawm nplej hauv hlau loj cuam tshuam nws cov khoom siv neeg kho tshuab. Zoo - cov hlau muaj qoob loo ntau feem ntau muaj lub zog zoo dua, kev nruj me ntsis, thiab ductility piv rau coarse - cov nplej sawv. Silicon calcium alloy ua raws li cov nplej ua kom zoo nkauj. Nws muab cov chaw nucleation ntau heev hauv cov hlau molten. Thaum lub sijhawm Sandaryification, cov chaw no tau hloov kho kom muaj kev tsim ntawm ntau cov txiv hmab me me tsis txhob siv ob peb tus loj. Lub xub ntiag ntawm silicon thiab calcium tseem cuam tshuam cov kev loj hlob GRULIN tus nqi, txuas ntxiv pab rau cov lis qauv qauv ua kom rov zoo. Cov khoom siv steel nrog ua kom zoo ua ke yog tiv taus ntau dua rau deformation, muaj kev nkees zoo dua, thiab yog yooj yim txheej txheem. Qhov no ua rau lawv zoo tagnrho rau kev lag luam zoo li Aerospace, qhov twg cov ntaub ntawv yuav tsum ua kom tiav rau kev nyab xeeb thiab ua haujlwm.
Kho cov kev txwv tsis pub: Boosting hlau kev ua haujlwm
Suav nrog hauv cov hlau, xws li oxides, thiab nitrides, thiab nitrides, tuaj yeem ua raws li kev ntxhov siab cov khoom siv tshuab hluav taws xob. Casi alloy muaj lub peev xwm los hloov cov duab, qhov loj me, thiab faib khoom ntawm cov suav nrog no. Piv txwv li, nws tuaj yeem hloov elongated thiab teeb meem sulfide suav nrog ntau cov ntaub ntawv ntau dua thiab cov khoom muaj teeb meem tsawg. Los ntawm kev hloov pauv morphology ntawm suav, Sica alloy alotoy minimizes lawv qhov tsis zoo ntawm cov steel lub zog, ductility, thiab qaug zog lub neej. Qhov no yog qhov tseem ceeb rau kev tsim cov siab - cov hlau zoo siv hauv kev thov kev lag luam thiab ntev - kev tsim khoom lag luam ntawm High - Precision - encentored Cheebtsam.
Alloying theem hloov kho: tailoring steel rau kev ua tiav
Nyob ntawm qhov xav tau ntawm cov qib steel sib txawv, calcium silicon tuaj yeem siv los kho cov qib silicon thiab calcium hauv cov khoom kawg. Silicon tuaj yeem txhim kho cov hlau lub zog thiab hardness, thaum calcium tuaj yeem txhim kho nws cov tshuab luam ntawv thiab corrosion tsis kam nyob hauv qee qhov chaw ib puag ncig. Los ntawm kev ua tib zoo tswj cov nyiaj silicon ntxiv thaum lub sij hawm steelmaking, cov tuam ntxhab tuaj yeem zoo - Qhib cov khoom siv hlau. Qhov no tso cai rau lawv kom tau raws li cov kev xav tau sib txawv ntawm ntau yam kev lag luam, txawm tias nws tau tsim cov kiv cua siab - corrosion - resistant steel rau cov ntawv thov marine.
Hauv kev xaus, calcium silicon alloy yog ib qho tseem ceeb hauv cov hlau. Nws cov luag haujlwm hauv Deagidation, Lieuulation, lis kev hloov kho cov khoom lag luam zoo, thiab dav - xws li cov khoom lag luam steel ntawm niaj hnub no. Raws li kev lag luam hlau txuas ntxiv mus ua ntej thiab kev thov kom siab dua - qhov tseem ceeb ntawm silicon calcium hauv steelmakaking tsuas yog nce.
