Yuav ua li cas xaiv Qhov Zoo Ferro Silicon Qib Rau Nrum Hlau

Xaiv qhov tseebFerro Silicon Qibyog qhov tseem ceeb rau kev ua kom pom yooj yim ua hlau zoo, txo cov khoom tsis zoo, thiab cov nqi tswj hwm. Cov lus qhia no rhuav tshem cov xwm txheej tseem ceeb, cov kauj ruam, thiab kev ua zoo tshaj plaws rau kev tshawb fawb rau cov kws tshawb fawb engent

Ua ntej xaiv cov qib kawm, hais kom meej vim li cas Ferro Silic Silicon tsis yog}}} Cov ntsiab lus no pab ua ntej cov cwj pwm qib tseem ceeb.

Deoxidation:

Tshem tawm cov pa oxygen yaj los ntawm cov hlau molten los tiv thaiv cov porosity hauv kev ua tiav.

Silicon txhawb zog:

Hloov cov ntsiab lus silicon ntawm cam khwb cia hlau los tswj nws micrictructure (piv txwv li, txhawb graphite consation hauv grey cam khwb cia hlau).

Desulfurization:

Txo cov qib faj sulfur (thaum ua ke nrog lwm cov alloys) kom tsis txhob muaj xwm txheej loj zoo li hlau sulfide.

Alloy Tus Nqi Ua Tau:

FERRO Silicoron tau muaj nqi ntau dua -}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Zoo dua li kev xaiv qib kom ncaj qha rau kev tswj hwm cov nyiaj txiag.

Nrum Hlau Hom

Txawv cam khwb cia hlau Pawg tau thov kom cov qib silicon kom ua tiav cov hom phiaj. Qhov no yog qhov tseem ceeb tshaj plaws rau kev xaiv qib.

Qhov uas xav tau Casting Khoom

Txhim kho cov hom phiaj ua tau zoo los kho cov kev xaiv qib, tshwj xeeb tshaj yog nyob ib puag ncig kev coj dawb huv thiab qib uas tsis huv:
 Lub zog siab:XaivTsawg -} al} Aluminium Ferro Silic Silicoron (e.g., Fesi 75al0.5) kom txo cov oxide uas tsis muaj zog, uas tsis muaj zog pov tseg.
 Hnav Kuj:Opt rau qib nrog cov roj carbon tsawg (tsawg dua los yog sib npaug rau 0.1% kom tsis txhob muaj cov carbon pub dawb tso rau hauv cov chaw ua haujlwm.
 Machinability:Txhawm rau yooj yim -} rau - i} cov tshuab cam khwb cia hlau, siv FESI 45-50 (qis dua li Silicon txo qis theem zoo li cementite).

Melting txheej txheem

Koj cov khoom siv melting cuam tshuam li cas Ferro Silicon ua - Sib phim qib rau koj cov txheej txheem kom ua haujlwm ntau.
 Cupola Furnaces:Siv qis dua {- cov qib kawm (FESI 45-50) vim tias kub siab tuaj yeem ua rau ntau silicon hlawv {}} tawm.
 Induction Rauv:High - Cov qhab nia qib (FESI 70-75) ua haujlwm zoo dua ntawm silicon poob, thiab siab dua purity txo cov kev nplua.
 Fais Arc Rauv:Fesi 65-70 yog qhov zoo tagnrho; Nws qhov sib luag Silicon cov ntsiab lus tshuav deoxidation thiab tus nqi.

Ua raws li cov ua haujlwm ua haujlwm no txhawm rau tshem tawm kev twv thiab kawm qib nrog koj cov kev xav tau.

Kauj ruam 1: Xam cov neeg yuav tsum muaj Silicon ntxiv

Ua ntej, txiav txim siab ntau npaum li cas silicon koj yuav tsum tau ntxiv rau koj cov hlau hauv paus kom ncav cuag cov ntsiab lus. Siv cov mis no: Silicon ntxiv (%)=hom phiaj silicon (%) - luj hlau silicon (%)
 Piv txwv li:Yog tias koj lub hauv paus hlau muaj 1.0% silicon thiab koj xav tau 3.0% rau cov hlau ductab, koj yuav tsum tau ntxiv 2.0% silicon.

Kauj ruam 2: LAWV LAWV KAWG RAU COV NTXHAIS

Txhua tus ferrro silicon qib muaj cov ntsiab lus ruaj khov silicon (tus lej hauv lub npe =% silicon). Siv cov khoom seem uas yuav tsum muaj silicon ntxiv ntxiv rau xaiv ib qib:
Xav tau 1.5-2.5% ntxiv rau? Xaiv FESI 70-75 (High silicon=tsawg dua alloy xav tau, qis tus nqi ib pawg silicon).
Xav tau<1.5% silicon addition? FeSi 45–60 works (avoids over-saturating the melt with silicon).

Kauj ruam 3: Ntsuas cov impuration txwv

Impurities (txhuas, cov roj carbon, phosphorus) tuaj yeem kho cov khoom lag luam tawm tsam koj tus nqi ntsuas:
 Txhuas:Ceev<1.0% for most cast irons; <0.5% for critical parts (e.g., automotive CGI components).
 Cov:Max 0.2% los tiv thaiv graphite flaking hauv cov hlau cooj.
 Sulphur:Max 0.05% {- Siab heev} Siab} Cov neeg mob siab heev} Siab heev} Cov neeg mob siab (piv txwv li, magnesium) hauv cov hlau du.

Kauj ruam 4: Tshawb xyuas qhov sib thooj nrog lwm cov alloys

Yog tias koj siv lwm tus additives (piv txwv li, nodulizers, inoculants), xyuas kom koj cov ferrro silicon qib tsis hnov ​​qab negtatively:
 Rau pawg hlau uas muaj hlau nrog magnesium Nodulizers:Siv qis -} aluminium Ferro Silicon (Al<0.8%) to avoid forming magnesium-aluminum oxides (which reduce nodularity).
 Rau inoculated grey hlau:Khub Fesi 50 nrog calcium -} Raws inculants rau kev kho kom zoo dua.

Tsav ntshiab ntawm cov pitfuls uas ua rau tsis xws luag (piv txwv, porosity, britleness) lossis cov nqi khib nyiab:
Xaiv cov qib siab tshaj plaws los ntawm lub neej ntawd: Fesi 75 tsis yog ib txwm zoo dua-}} rau grey ceev duab, txo lub zog.
Ignoring Impurity Data: Assuming all FeSi 70 grades are the same-low-aluminum variants cost more but prevent costly rework.
Kev sib txuas lus tsis sib xws rau cov cua sov: siv FESI 75 hauv lub tshuab ua kom sov (cua silicon hlawv nyiaj) thiab tsim slag.

Xaiv txoj cai Ferrosilicon qib yog qhov sib npaug ntawm cov hlau cam khwb cia hlau, cov hom phiaj ua tau zoo, thiab ua tiav compatibility. Los ntawm ua raws li phau ntawv qhia no, koj yuav txo qhov tsis xws luag, txiav cov nqi alloy, thiab xyuas kom meej li casing zoo. Txog kev txhawb nqa tus kheej, muab koj cov hlau cam khwb cia (hom, khoom, cov cua sov ua kom muaj kev ntseeg siab- Lawv tuaj yeem muab cov lus pom zoo ntawm cov kev cai lij choj.