Yuav ua li cas ntau dhau impurities hauv ferrosilicon cuam tshuam rau hlau

"Low-aluminium ferrosilicon" suab zoo li nws yog txhua yam hais txog txhuas, tab sis hauv kev siv tiag tiag cov qib silicon tseem ceeb npaum li cas. Yog vim li cas ntau specs tsom rau75% (FeSi75)yog tias nws muab kev huv, tswj tau ntau txoj hauv kev xa cov silicon thaum khaws txhuas nruj nruj. Yog tias cov ntsiab lus silicon poob qis dhau lawm, koj feem ntau xaus rau kev ntxiv cov khoom siv kom ncav cuag cov txiaj ntsig zoo ib yam - thiab qhov ntawd tuaj yeem ua rau kev tswj tsis huv nyuaj, tsis yooj yim dua.

Hauv qab no yog cov lus piav qhia siv tau hauv Q&A daim ntawv, yam tsis tau txais kev tshaj lij.

Q1: Cov impurities twg yog qhov tseem ceeb tshaj plaws hauv ferrosilicon rau steelmaking?

Cov feem ntau teev nyob rau hauv COA feem ntau yog:

Al (Aluminium)

P (phosphorus)

S (Sulfur)

C (Carbon)

Nyob ntawm qib steel, qee cov nroj tsuag kuj tau them nyiaj rau cov kab mob (xws li Ca, Ti, Mn), tab sis Al / P / S / C yog cov khoom "core" li niaj zaus vim tias lawv tshwm sim hauv kev tswj kom zoo thiab teeb meem kev ua haujlwm feem ntau.

Q2: Yuav ua li cas yog tias phosphorus (P) siab dhau lawm?

High phosphorus yog ib qho ntawm feem ntau tsis nyiam impurities rau ntau steels. Thaum P nce, nws tuaj yeem:

Ncebrittleness, tshwj xeeb tshaj yog nyob rau hauv qis kub

Txo cov tawv nqaij thiab ua kom cov hlau tawg ntau dua -sensitive

Tsim teeb meem hauv cov ntawv thov uas qhov ductility tseem ceeb

Txawm hais tias ib qho cua sov tseem dhau los ntawm chemistry yooj yim, rov ua dua siab dua -P cov khoom siv tuaj yeem nqaim koj cov npoo kev nyab xeeb thiab ua rau kev ua haujlwm tsis zoo ib yam.

Q3: Vim li cas sulfur (S) teeb meem thaum nws dhau lawm?

High sulfur tuaj yeem ua rau:

phem duaductilitythiab toughness

Kev pheej hmoo siab duakub luvlos yog cracking tendencies (nyob ntawm txoj kev steel)

Ntau rhiab heev nyob rau hauv nto zoo thiab ua

Ntau cov nroj tsuag steel twb ua hauj lwm nyuaj los tswj cov sulfur ntawm lwm cov kauj ruam, yog li ntxiv cov sulfur ntxiv los ntawm ferroalloy yog qhov pib tsim kev zam tom qab.

Q4: Ua li cas siab aluminium (Al) hauv ferrosilicon cuam tshuam rau hlau?

Aluminium yog qhov tsis yooj yim vim nws tsis yog ib txwm "phem" - nws tau siv rau qee qhov kev coj ua. Tab sis tsis txhob cia siab rau txhuas los ntawm FeSi tuaj yeem ua rau muaj teeb meem xws li:

Hloov hauvsuav nrog hom thiab tus nqi(ntau Al{0}}txog oxides)

Muaj kev pheej hmoo siab ntawm nozzle clogging nyob rau hauv ib co nruam casting teeb

Nyuaj dua -kom- tswj kev huv yog tias cov txheej txheem tsom rau qis Al

Qhov no yog vim li cas "qis-Al FeSi75" tshwm sim: qee cov kab ntau lawm tsuas yog tsis xav tau ntxiv txhuas nkag los ntawm deoxidizer.

Q5: Puas yog carbon (C) hauv ferrosilicon tiag tiag?

Nws tuaj yeem, tshwj xeeb tshaj yog thaum tsim cov khoom qis - carbon lossis nruj tswj cov hlau. Yog tias C siab tshaj qhov xav tau, nws tuaj yeem:

Ua kom tswj cov pa roj carbon ntau nyuaj (cov kauj ruam kho ntxiv)

Ua kom muaj kev sib txawv ntawm cov cua sov

Txo qhov yooj yim thaum tsom rau qis - cov hom phiaj carbon

Rau cov pa roj carbon steel dav dav, qhov no yuav tsis tshua nkag siab. Tab sis rau cov qib huv huv lossis ntau dua kev tswj hwm, zais cov pa roj carbon input ua qhov teeb meem kev npaj tiag.

FeSi

Ferro Silicon Lump

Txawm hais tias qhov kev txwv tsis pub dhau yog "tsim siv tau," teeb meem pib thaum COA hloov pauv los ntawm ntau mus rau ntau. Steelmaking nyiam kev kwv yees. Yog tias impurities hloov pauv, rov qab hloov pauv, kho kom raug nce ntxiv, thiab qhov zoo yuav nyuaj rau stabilize.

Hais txog peb cov khoom

Peb muabFeSi75 thiab FeSi72nrog tswj impurities thiab ruaj khov batch sib xws, txhawb los ntawm cov ntaub ntawv COA txheem. Yog tias koj qhia koj cov kev xav tau qib steel thiab cov ntsiab lus twg yog qhov tseem ceeb tshaj plaws hauv koj cov txheej txheem (piv txwv li, qis P / S lossis qis Al), peb tuaj yeem qhia cov kev xaiv tsim nyog thiab muab cov lus qhia FOB tshiab thiab cov khoom xa tuaj.