(1) Siv los ua deoxidizer thiab alloying tus neeg sawv cev hauv kev lag luam steelmaking. Txhawm rau kom tau txais cov hlau uas tsim nyog cov tshuaj muaj pes tsawg leeg thiab ua kom cov hlau zoo, deoxidation yuav tsum tau ua nyob rau theem kawg ntawm steelmaking. Cov tshuaj affinity ntawm silicon thiab oxygen yog loj heev, yog li ferrosilicon yog ib qho tseem ceeb deoxidizer hauv kev lag luam steelmaking. Hauv steelmaking ntau lawm, tshwj tsis yog rau qee cov boiling steels, yuav luag txhua hom hlau siv ferrosilicon ua lub zog deoxidizer rau nag lossis daus deoxidation thiab diffusion deoxidation. Ntxiv qee qhov nyiaj ntawm silicon rau cov hlau tuaj yeem txhim kho lub zog, hardness thiab elasticity ntawm cov hlau. Yog li ntawd, nws yog dav siv nyob rau hauv smelting structural steel (muaj siO. 40% ~ 1.75%) thiab cov cuab yeej steel (muaj siO. 30%). ~ 1.8%), caij nplooj ntoos hlav steel (muaj Si O. 40% ~ 2.8%) thiab lwm yam steel hom, ib co nyiaj ntawm ferrosilicon yuav tsum tau ntxiv raws li ib tug alloying neeg sawv cev. Silicon kuj muaj cov yam ntxwv ntawm kev ua haujlwm loj, tsis zoo thermal conductivity thiab muaj zog sib nqus conductivity. Cov hlau muaj qee qhov nyiaj ntawm silicon, uas tuaj yeem txhim kho qhov sib nqus permeability ntawm cov hlau, txo hysteresis poob, thiab txo qhov poob tam sim no. Yog li ntawd, ferrosilicon kuj tseem siv los ua tus neeg sawv cev alloying thaum smelting silicon steel, xws li qis silicon steel rau motors (muaj Si O. 80% mus rau 2.80%) thiab silicon steel rau transformers (muaj Si 2.81% rau 4.8%). siv.
Tsis tas li ntawd, nyob rau hauv kev lag luam steelmaking, ferrosilicon hmoov tuaj yeem tso tawm ntau cov cua sov thaum kub kub thiab feem ntau yog siv los ua cov khoom cua sov rau steel ingot caps los txhim kho qhov zoo thiab rov qab tus nqi ntawm steel ingots.
(2) Siv los ua inoculant thiab spheroidizing tus neeg sawv cev hauv kev lag luam cam khwb cia hlau. Cam khwb cia hlau yog cov khoom siv hlau tseem ceeb hauv kev lag luam niaj hnub no. Nws yog pheej yig dua li hlau, yooj yim rau yaj thiab smelt, muaj zoo heev casting zog thiab av qeeg zoo dua li hlau. Tshwj xeeb tshaj yog ductile hlau, nws cov cuab yeej cuab tam ncav cuag lossis nyob ze rau cov hlau. kev ua tau zoo. Ntxiv ib qho nyiaj ntawm ferrosilicon rau cam khwb cia hlau tuaj yeem tiv thaiv kev tsim cov carbides hauv cov hlau thiab txhawb cov nag lossis daus thiab spheroidization ntawm graphite. Yog li ntawd, nyob rau hauv zus tau tej cov ductile hlau, ferrosilicon yog ib qho tseem ceeb inoculant (pab kom precipitate graphite) thiab spheroidizing tus neeg sawv cev. .
(3) Siv los txo tus neeg sawv cev hauv ferroalloy ntau lawm. Tsis tsuas yog cov tshuaj affinity ntawm silicon thiab oxygen siab heev, tab sis cov pa roj carbon ntsiab lus ntawm high-silicon ferrosilicon yog tsawg heev. Yog li ntawd, high-silicon ferrosilicon (los yog silicon alloy) yog ib qho uas feem ntau siv los txo tus neeg sawv cev hauv kev lag luam ferroalloy thaum tsim cov pa roj carbon tsawg ferroalloys.
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