Silicon thiab hlau tuaj yeem hnov mob hauv qee yam mob. Feem ntau, tsis muaj cov tshuaj tiv thaiv ncaj qha ntawm cov ntshiab silicon thiab cov pa roj carbon zoo tib yam (piv txwv li, cov hlau uas muaj cov pa roj carbon tsawg).
Txawm li cas los xij, ntawm qhov kub thiab txias, silicon tuaj yeem cuam tshuam nrog qee yam ntawm cov hlau. Piv txwv li, hauv qee qhov kev lag luam kub kub, silicon yuav hnov mob nrog cov ntsiab lus xws li hlau thiab carbon hauv hlau los tsim qee cov tebchaw.
Tsis tas li ntawd, hauv kev lag luam tshwj xeeb, silicon steel (tseem hu ua hluav taws xob silicon steel) yog hom tshwj xeeb ntawm cov hlau uas silicon txhob txwm ntxiv los txhim kho cov hlau nplaum thiab hluav taws xob muaj peev xwm ntawm cov hlau. Hom silicon hlau no yog siv dav hauv kev tsim cov khoom siv hluav taws xob xws li transformers thiab motors.
Rau ntau cov ntaub ntawv hauv carbon steel, muaj tsawg dua 0.5% Si, uas feem ntau yog coj los ntawm cov txheej txheem steelmaking raws li kev txo thiab deoxidizing tus neeg sawv cev.
Si muaj peev xwm yaj nyob rau hauv ferrite thiab austenite los txhim kho hardness thiab lub zog ntawm hlau, thiab nws lub luag hauj lwm yog thib ob tsuas yog phosphorus, muaj zog tshaj manganese, npib tsib xee, chromium, tungsten, molybdenum, vanadium thiab lwm yam ntsiab. Tab sis cov ntsiab lus ntawm silicon ntau dua 3%, yuav txo cov plasticity thiab toughness ntawm hlau. Silicon tuaj yeem txhim kho qhov kev txwv tsis pub muaj zog, tawm dag zog thiab tawm los piv (σs / σb), thiab qaug zog thiab qaug zog piv (σ-1 / σb) ntawm hlau. Qhov no yog vim li cas yog vim li cas silicon los yog silicomanganese hlau tuaj yeem siv los ua lub caij nplooj ntoos hlav steel qib.
Kev cuam tshuam ntawm silicon rau steel zog:
Silicon txo qhov ntom, thermal thiab hluav taws xob conductivity ntawm hlau. Nws induces ferrite grain coarsening thiab txo coercivity. Muaj kev nyiam los txo cov anisotropy ntawm cov muaju, kom cov hlau nplaum yooj yim, cov magnetoresistance txo, thiab tuaj yeem siv los tsim hluav taws xob hlau, yog li hysteresis poob ntawm silicon steel ntawv qis dua. Silicon tuaj yeem txhim kho qhov sib nqus permeability ntawm ferrite, kom cov ntawv hlau hauv qhov chaw tsis muaj zog sib nqus muaj qhov sib nqus siab dua. Txawm li cas los xij, silicon txo qhov sib nqus ntawm cov hlau hauv cov hlau nplaum muaj zog. Silicon txo qhov kev laus ntawm cov hlau nplaum vim nws lub zog deoxidizing zog.
Thaum cov hlau uas muaj silicon yog cua sov hauv qhov chaw oxidizing, ib zaj duab xis nyias ntawm SiO2 yuav tsim rau ntawm qhov chaw, yog li txhim kho cov hlau tsis kam oxidation ntawm qhov kub thiab txias.
Silicon induces txoj kev loj hlob ntawm columnar crystals nyob rau hauv cam khwb cia hlau, txo plasticity. Silicon steel yog rhuab thaum txias sai dua, vim tsis tshua muaj thermal conductivity, steel sab hauv thiab sab nraud kub sib txawv yog loj, thiab yog li tawg.
Silicon tuaj yeem txo qhov vuam khoom ntawm cov hlau. Vim tias kev sib xyaw ua ke ntawm cov pa oxygen nrog lub peev xwm ntawm silicon muaj zog dua hlau, yooj yim los tsim cov ntsiab lus qis melting silicates hauv vuam, ua rau kev txav ntawm slag thiab molten hlau, ua rau muaj qhov tshwm sim tawg, cuam tshuam qhov zoo ntawm vuam. Silicon yog ib qho zoo deoxidizer. Deoxygenation ntawm txhuas nrog qee qhov nyiaj ntawm silicon, raws li qhov tsim nyog, tuaj yeem txhim kho tus nqi deoxygenation. Silicon nyob rau hauv cov hlau yuav muaj ib tug npaum li cas ntawm cov residue, uas yog vim lub steelmaking steelmaking li raw cov ntaub ntawv coj los rau hauv.<0.07%, and when intentionally added, ferrosilicon alloy is added during steelmaking.
