High Carbon Ferrochrome Spot thiab Txawv Teb Chaws Ua Lag Luam Reference Nqe
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High Carbon Ferrochrome Spot thiab Txawv Teb Chaws Ua Lag Luam Reference Nqe
Ferrochrome yog cov cab kuj uas muab chromium rau hauv stainless thiab alloy hlau, thiab cov qib carbon siab ua lag luam ntim vim tias lawv yog qhov pheej yig tshaj los yuav chromium units. Cov nqi siv hauv qab no sib piv cov lus hais txawv teb chaws thiab xaus qhov muag qhov tseem ceeb rau cov khoom siv los ntawm peb lub hauv paus pib thaum Lub Plaub Hlis 30. Tag nrho cov txiaj ntsig tau hais hauv Teb Chaws Asmeskas las ib phaus ntawm cov chromium nyob rau hauv CIF, thiab cov ntsiab lus chromium thiab silicon xa mus rau qhov kev tshuaj ntsuam xyuas ntawm txhua lub hauv paus chiv keeb.
| Keeb kwm | Kev tsom xam | Txawv teb chaws quotation | Muag nqi | Particle loj |
|---|---|---|---|---|
| South Africa | Cr txog 48-50%, Si txog 5% | 0.88-0.90 | 0.87-0.89 | 10-150 hli thiab 200 hli |
| Is Nrias teb | Cr txog 60%, Si txog 4% | 0.88-0.91 | 0.87-0.89 | 10-150 hli |
| Kazakhstan | Cr txog 70%, Si txog 0.5% | 0.90-0.95 | 0.88-0.93 | 10-50 mm thiab 150 mm |
Kev sib kis ntawm cov lus hais thiab muag tus nqi yog nqaim tshaj plaws rau cov khoom siv Indian thiab dav tshaj plaws rau cov khoom siv Kazakh, uas qhia txog qhov tseeb tias tus nqi chromium siab yog yuav los ntawm cov mills uas xav tau ib qho nqi sib npaug es tsis yog los ntawm kev ua lag luam. Cov khoom siv South African teeb tsa hauv pem teb rau tag nrho cov lag luam vim tias nws cov chromium rau hlau piv thiab nws qhov loj muaj tonnage ua rau nws cov khoom siv rau cov neeg tsim khoom stainless hlau.
Qib Cov Qauv thiab Cov Khoom Siv Tshuaj
Cov pa roj carbon ntau ferrochrome tau muab qhab nia los ntawm cov ntsiab lus chromium thiab los ntawm cov pa roj carbon ntau tshaj plaws uas qib yuav nqa tau. Lub npe nws tus kheej encodes cov pa roj carbon txwv, yog li FeCr55C3 tso cai rau 3.0% carbon thaum FeCr67C6 tso cai mus txog 6.0%. Kev sib xyaw ua ke rau cov npe lag luam uas feem ntau tau teev tseg hauv qab no; kev muab qhab nia ua raws li kev tsim ferroalloy designations es tsis yog ib lub teb chaws tus qauv, yog li cov neeg yuav khoom yuav tsum nco ntsoov lees paub daim ntawv pov thawj tshuaj ntsuam tawm tsam qhov kev txiav txim.
| Qeb | Lub npe | Chromium cov ntsiab lus | Cov pa roj carbon (max) |
|---|---|---|---|
| Tsawg carbon | FeCr69C 0.03 | 63-75% | 0.03% |
| Tsawg carbon | FeCr55C3 | 52-60% | 3.0% |
| Nruab nrab carbon | FeCr69C 2 | 52-60% | 2.0% |
| Cov pa roj carbon ntau | FeCr67C 6 | 60-72% | 6.0% |
| Cov pa roj carbon ntau | FeCr55C6 | 52-60% | 6.0% |
Phosphorus thiab sulfur txwv nruj thaum cov ntsiab lus carbon poob, vim tias cov qib qis carbon yog tsim los ntawm kev ua kom zoo dua cov pa roj carbon ntau thiab cov kauj ruam ua kom zoo kuj tshem tawm ib feem ntawm phosphorus thiab sulfur. Qhov no yog ib qho laj thawj vim li cas cov pa roj carbon tsawg ferrochrome nqa tus nqi zoo tshaj tus nqi siab carbon siv, txawm tias cov ntsiab lus chromium ntawm ob cov khoom zoo sib xws.
Particle Loj, Ntim thiab Xa Khoom
Cov pa roj carbon ntau chrome yog ib txwm muab nkag rau hauv 10-150 mm lumps, nrog 10-50 mm thiab 0-10 mm nplua muaj rau cov tshuab them nyiaj sib txawv.
Cov pa roj carbon tsawg thiab cov qib carbon nruab nrab feem ntau raug tshuaj xyuas rau 10-50 hli, vim tias cov khoom me me ntxiv yuav tsum yaj sai sai thiab sib npaug hauv lub ladle.
Cov ntaub ntawv loj txav mus rau hauv cov thawv ntim lossis hauv cov hnab loj uas tau tshaj tawm qhov hnyav, thiab cov ntsiab lus chromium siv rau kev them nqi yog daim ntawv pov thawj, tsis yog qhov kev soj ntsuam.
Cov lus hais tau hais los ntawm CIF hauv ib phaus ntawm cov chromium, yog li kev thauj khoom thiab chromium rau hlau piv ob qho tib si hloov tus nqi xa tawm ib tonne ntawm alloy.
Vim hais tias tus nqi ntawm chav tsev yog phaus ntawm chromium es tsis yog lub tonne ntawm alloy, tus nqi sib piv ntawm ob lub hauv paus ntsiab lus tsuas yog muaj txiaj ntsig thaum cov ntawv pov thawj chromium cov ntsiab lus thiab cov particle loj faib tau paub. Ib qho khoom xa tuaj uas yog ib feem pua qis qis hauv chromium muab faib ua feem tsawg chromium units rau tib lub tonnage, thiab qhov sib txawv no feem ntau loj dua li cov khoom thauj khoom uas nyiam cov neeg yuav khoom thawj zaug.
Metallurgical siv hauv Stainless thiab Alloy Steel
Yuav luag tag nrho cov ferrochrome yog siv nyob rau hauv stainless hlau melting, qhov twg nws yog them mus rau hauv lub hluav taws xob arc rauv thiab ces refined nyob rau hauv ib tug argon oxygen decarburisation converter. Cov qib siab carbon yog them ntxov kom cov pa roj carbon lawv nqa tuaj yeem raug tshem tawm hauv lub converter ua ke nrog cov pa roj carbon ntawm cov yaj; Cov qib carbon qis tau ntxiv rau qhov kawg ntawm cov txheej txheem, thaum cov pa roj carbon qib yuav tsum tau tuav qis dua qhov kev txwv ntawm qib steel thiab oxygen tshuab yuav tsis tau txais.
Sab nraum stainless hlau, ferrochrome yog siv nyob rau hauv cov cuab yeej steel, bearing steels, kub resistant castings thiab hnav resistant irons, thiab nws yog ib tug txheej txheem ntxiv nyob rau hauv ib co siab chromium dawb hlau zeb liners. Kev rov qab nyob rau hauv cov yaj yog nyob ntawm oxidation lub xeev ntawm da dej thaum lub sij hawm ntxiv thiab ib txwm khiav saum toj 95% rau cov qib siab carbon them rau hauv lub cub tawg, tab sis nws poob thaum cov khoom yog ntxiv rau ib tug heev oxidised ladle ua ntej deoxidation.
Cov chromium muab los ntawm cov hlau alloy nce hardenability, txhim kho kev tiv thaiv oxidation ntawm qhov kub thiab txias, siab tshaj li 10.5% hauv cov hlau, tsim cov txheej txheej passive uas txhais tau tias stainless hlau. Silicon nqa nyob rau hauv lub alloy ua raws li ib tug deoxidiser thiab yog li ntawd pab tau thaum lub sij hawm them nqi, tab sis tib silicon yuav tsum tau accounted rau nyob rau hauv lub kawg chemistry ntawm tshav kub.
Cov lus nug nquag
Q: Vim li cas cov pa roj carbon siab ferrochrome pheej yig dua li qib qis carbon?
Cov qib qis carbon yog tsim los ntawm kev ua kom zoo dua cov pa roj carbon ntau thiab xav tau cov txheej txheem ntau ntxiv rau ib chav tsev ntawm chromium, yog li lawv nqa tus nqi them rov qab rau saum tus nqi chromium.
Q: Tus lej hauv FeCr55C3 txhais li cas?
Thawj daim duab yog cov ntsiab lus chromium nominal, kwv yees li 55%, thiab qhov thib ob yog cov ntsiab lus carbon siab tshaj plaws, 3.0%, yog li lub npe teev cov nqi chemistry ncaj qha.
Q: Dab tsi yog chav tsev nqi rau ferrochrome?
Kev lag luam txawv teb chaws feem ntau tau teev nyob rau hauv Teb Chaws Asmeskas las ib phaus ntawm cov chromium nyob rau hauv CIF, tsis yog ib tonne ntawm alloy.
Q: Qhov luaj li cas feem yuav tsum tau txiav txim?
10-150 mm lumps for furnace charging and 10-50 mm material for ladle adds, with the fines fractions saws cais yog tias tus neeg muag khoom tsom mus rau ntau yam.
Q: Cov qhab nia sab nraum cov lus teev npe puas tuaj yeem muab tau?
Yog lawm. Chromium ranges thiab qhov loj me feem ntau sab nraum cov qauv tsim tau tsim los rau kev tsom xam thiab qhov loj me pom zoo rau qhov kev txiav txim.
Q: Yuav kuaj chromium li cas tom qab melting?
Txhua lub tshav kub yog kuaj thiab tshuaj xyuas los ntawm kev kho qhov muag emission spectrometry, thiab daim duab chromium los ntawm daim ntawv pov thawj ntawd yog lub hauv paus rau ob qho tib si tso tawm thiab kev xa tawm ntawm cov khoom xa tuaj.
