Taw qhia
SivFeSi 75%hauv hluav taws xob hlau tsis yog ib qho "ntxiv nws thiab ua tiav" kauj ruam. Hluav taws xob cov hlau yog rhiab heev: cov kev hloov me me hauv chemistry, suav nrog, thiab lub sijhawm txheej txheem tuaj yeem tshwm sim tom qab li kev sib nqus los yog kev ua haujlwm tsis ruaj khov. Tias yog vim li cas ntau tus neeg tsim khoom kho FeSi75 raws li kev tswj hwm cov tswv yim es tsis yog cov khoom siv yooj yim. Hauv qab no yog cov tswv yim Q&As cov neeg yuav khoom thiab pawg cog feem ntau sib tham thaum lawv xav siv FeSi75 kom zoo hauv cov khoom siv hluav taws xob.
Kev lag luam Q&A
Q1: Vim li cas FeSi75 feem ntau siv rau cov hlau hluav taws xob hloov qis dua?
Hluav taws xob steel xav tauruaj khov silicon tswjthiab huv metallurgy. FeSi75 muaj ntau dua silicon concentration, yog li cov nroj tsuag tuaj yeem ntaus lub hom phiaj Si theem nrog me me ntxiv thiab feem ntau nrog kev kwv yees ntau dua.
Tsis tas li ntawd, FeSi75 feem ntau xaiv vim tias kev tswj tsis huv (tshwj xeeb tshaj yogP, S, thiab qee zaum Al) tuaj yeem tswj hwm nruj dua hauv ntau daim ntawv cog lus muab khoom. Rau cov hlau hluav taws xob, qhov kev ruaj ntseg no feem ntau muaj txiaj ntsig ntau dua li txuag tus nqi me me ntawm cov nqi hlau.
Q2: Thaum twg nyob rau hauv tus txheej txheem yog FeSi75 feem ntau ntxiv rau hluav taws xob hlau?
Qhov no nyob ntawm txoj kev cog (EAF / BOF + refining), tab sis nyob rau hauv ntau txoj haujlwm FeSi75 tau ntxiv rau hauv ib txoj hauv kev no:
Thaum tapping: siv los kho chemistry li molten steel txav mus rau lub ladle.
Nyob rau hauv lub ladle (secondary refining theem): siv rau kev tswj kom meej dua, tshwj xeeb tshaj yog thaum cov nroj tsuag xav kom nruj dua qhov kawg Si raug.
Split ntxiv: ib feem ntawm tapping, ib feem tom qab hauv ladle refining - qhov no yog ib qho thaum cov nroj tsuag xav kom rov qab zoo dua thiab tsis tshua muaj kev pheej hmoo ntawm overshooting.
Hauv hluav taws xob hlau, txoj hauv kev "split" feem ntau nyiam vim nws txo qis chemistry dhia thiab tso cai rau kev kho tom qab.
Q3: Qhov luaj li cas ntawm FeSi75 ua haujlwm zoo tshaj plaws rau kev siv hluav taws xob hlau?
Cov kws tsim hluav taws xob steel feem ntau lean mus raume me los yog qhov nruab nrabvim tias lawv xav tau kev tswj hwm, nrawm nrawm thaum lub sijhawm ua kom zoo:
1-5 hlithiab3-8 hliyog ib qho kev xaiv rau ladle/refining ntxiv.
10-50 hlikuj tuaj yeem siv tau, tshwj xeeb tshaj yog thaum qhov sib ntxiv tshwm sim ua ntej (piv txwv li, tapping) thiab cov xwm txheej ntawm lub cub tawg txhawb kev ruaj khov.
Qhov loj me me muab cov tshuaj tiv thaiv sai, tab sis lawv tuaj yeem ua rau cov plua plav poob yog tias tuav tsis ceev faj. Tias yog vim li cas cov nroj tsuag feem ntau phim qhov loj me rau txoj kev pub mis thiab nyiam qhov loj me me, tsis yog "lub hnab sib xyaw."
Q4: Yuav ua li cas cov nroj tsuag kom tsis txhob muaj teeb meem zoo thaum ntxiv FeSi75 (xws li suav nrog lossis rov qab tsis ruaj khov)?
Hluav taws xob steel yog picky, yog li ob peb tus cwj pwm tseem ceeb:
Khaws impurities ruaj khov: P thiab S feem ntau yog saib ze; Al tuaj yeem tseem ceeb heev nyob ntawm txoj kev steel.
Tsis txhob ya raws thiab kis kab mob: cov khoom ntub los yog qias neeg tuaj yeem tsim teeb meem tshuaj tiv thaiv ntxiv thiab qee zaum ua rau muaj kev pheej hmoo ntxiv.
Ntxiv rau txoj kev tswj: dumping ceev heev tuaj yeem ua rau muaj kev hloov pauv hloov pauv thiab tsis sib xws.
Saib xyuas cov qauv rov qab: Cov nroj tsuag feem ntau kawm txog lawv qhov kev rov qab los ntawm silicon thiab kho cov kev xyaum ntxiv raws li cov txiaj ntsig tiag.
Hauv cov ntsiab lus yooj yim, cov txiaj ntsig zoo yog los ntawm cov khoom siv sib xws + kev pub mis zoo ib yam.
Q5: Yuav ua li cas cov neeg yuav khoom nug lawv tus neeg muag khoom FeSi75 thaum kawg siv yog hluav taws xob hlau?
Yog tias koj yuav FeSi75 rau hluav taws xob hlau, koj tsis xav tau ib qho kev qhia dav dav. Nws pab thov:
Cov qauv COA tsis ntev los noqhia Si plusAl, C, P, S
Kev lees paub ntawmruaj khov impurity ntau yam(tsis yog "ua tau raws li tus qauv")
Ib qho haumparticle loj pom zooraws li koj txoj kev ntxiv
Ntim uas tiv thaiv los ntawm ya raws (tshwj xeeb tshaj yog rau cov me me)
Yog tias tus neeg muag khoom tuaj yeem muab COA zoo ib yam hauv cov khoom siv, nws feem ntau qhia txog kev tswj xyuas cov txheej txheem zoo dua thiab kev ua tau zoo dua.
Hais txog peb cov khoom
Peb muabFeSi 75nyob rau hauv ntau qhov sib txawv xws li1-5 mm, 3–8 mm, thiab 10–50 mm, thiab peb tuaj yeem txhawb cov neeg siv khoom uas siv nws hauv cov ntawv thov rhiab dua li cov hlau hluav taws xob. Yog tias koj qhia peb koj lub hom phiaj silicon ntau, qhov cub ua kom sov, thiab qhov loj me, peb tuaj yeem qhia COAs tsis ntev los no, qhia txog qhov kev xaiv loj, thiab muab cov nqi FOB tshiab thiab cov kev xaiv ntim khoom uas haum rau kev xa tawm.
