HC Silicon 6515 (Si65C15) yog qhov siab -kev ua tau zoo ferroalloy haum rau kev siv metallurgical, txhais los ntawm nws cov ntsiab lus tseem ceeb ntawm ~ 65% silicon (Si) thiab ~ 15% carbon (C). Raws li ib tug dual -functional additive, nws ua hauj lwm raws li ob qho tib si tus neeg sawv cev alloying thiab carburizer nyob rau hauv steelmaking, thaum ua raws li ib tug tseem ceeb raw khoom rau inoculants thiab spheroidizers nyob rau hauv casting. Nws qhov tshwj xeeb ua ke ntawm cov silicon siab thiab cov ntsiab lus carbon tau hais txog cov kev xav tau tseem ceeb xws li deoxidation, kev hloov pauv carbon, thiab graphite optimization- ua rau nws tseem tsis tau muaj rau siab - carbon steel, cov cuab yeej steel, thiab cov khoom siv hlau.

High Carbon Silicon 6515 belongs rau qib siab -carbon silicon alloy tsev neeg, txawv los ntawm kev tswj nruj ntawm silicon, carbon, thiab impurity txheem. Tsis zoo li tus qauvferro silicon(tsawg carbon Tsawg dua los yog sib npaug rau 0.1%), nws cov ntsiab lus carbon siab ua rau muaj kev ua haujlwm dual, tshem tawm qhov xav tau rau cov carburizers cais hauv steelmaking.

HC Silicon 6515

Core Chemical Composition

Hauv qab no yog cov muaj pes tsawg leeg ntawm High Carbon Silicon 6515 thiab lwm qib:

Qib	Silicon (Si) Ntau dua lossis sib npaug	Carbon (C) Tsawg dua lossis sib npaug	Aluminium (Al) Tsawg dua lossis sib npaug	Sulfur (S) Tsawg dua lossis sib npaug	Phosphorus (P) Tsawg dua los yog sib npaug	Hlau (Fe)	Daim ntawv thov tseem ceeb
Si65C15	65%	15%	3%	0.1%	0.05%	Tshuav	Siab- carbon steel, hlau hlau casting
Si68C18	68%	18%	3%	0.1%	0.05%	Tshuav	Cov cuab yeej steel, hnyav -cov haujlwm castings
Si60C10	60%	10%	3%	0.1%	0.05%	Tshuav	Tsawg- carbon alloy steel, grey hlau
Customized	40–68%	12–20%	Sib tham tau	Sib tham tau	Sib tham tau	Tshuav	Tshwj xeeb alloy ntau lawm

Cov Lus Cim Tseem Ceeb:
Sulfur (S) and phosphorus (P) are strictly limited-S>0.1% causes hot brittleness, while P>0.05% induces txias brittleness nyob rau hauv steel.
Aluminium (Al) Tsawg dua lossis sib npaug li 3% zam cov oxide ntau dhau, ua kom cov hlau / cam khwb cia hlau purity.

Txheej txheem ntau lawm

Raw Khoom Npaj:

Silicon Source:Siab -purity silica xuab zeb (SiO₂ Ntau dua lossis sib npaug li 99.5%, Fe₂O₃ Tsawg dua lossis sib npaug li 0.1%).

Cov pa roj carbon:Tsawg- cov pa roj av coke (tsawg carbon ntau dua lossis sib npaug li 85%, tshauv Tsawg dua lossis sib npaug li 5%).

Hlau qhov chaw:Cov khib nyiab hlau lossis hlau ore (Fe Ntau dua lossis sib npaug li 95%, S / P Tsawg dua lossis sib npaug li 0.05%).

Loj:Silica: xuab zeb: coke: hlau=6: 3: 1 (hloov rau lub hom phiaj Si / C cov ntsiab lus).

Hluav taws xob rauv Smelting:

Khoom siv: Submerged arc rauv (lub zog 12.5-30 MVA).

Tsis Siv Neeg: Kub kub 1800-2000 degree, smelting lub sij hawm 8-12 teev, txo cua sov (CO- nplua nuj) los tiv thaiv oxidation.

Reaction: SiO₂ + 2C → Si + 2CO↑ (silicon txo); carbon yaj nyob rau hauv molten hlau- silicon alloy.

Casting & Crushing:

Molten alloy yog cam khwb cia rau hauv ingots, txias, thiab crushed rau qhov ntau thiab tsawg (0-3 hli mus rau 10-100 hli).

HC Silicon 6515

Vim li cas High Carbon Silicon 6515 Outperforms Single -Function Additives

HC Silicon 6515 tus nqi yog nyob rau hauv kev sib koom ua ke ntawm silicon thiab carbon, hais txog ntau yam kev xav tau ntawm metallurgical hauv ib qho ntxiv -tsis zoo li cais ferro silicon (alloying nkaus xwb) thiab carburizers (carbon hloov xwb).

2.1 Deoxidation & Alloying (Steelmaking Core Function)

Silicon lub luag haujlwm:

Silicon reacts nrog yaj oxygen nyob rau hauv molten hlau los tsim ruaj SiO₂ (2Si + O₂ → 2SiO₂). SiO₂ ua ke nrog CaO (los ntawm cov txiv qaub) kom tsim qis- melting-point CaSiO₃, uas ntab mus rau txheej slag-txo oxide inclusions los ntawm 35%.

Alloying nyhuv:

Silicon txhim kho steel lub zog, hardness, thiab hnav tsis kam los ntawm cov khoom siv ntxiv dag zog. Piv txwv li, ntxiv HC Silicon 6515 rau Q355 qis- alloy steel nce tensile zog los ntawm 10-15%.

2.2 Carburization: Precise Carbon Kho

Carbon lub luag haujlwm:

Nrog ~ 15% cov ntsiab lus carbon, HC Silicon 6515 ua haujlwm zoo li carburizer. Nws yaj hauv cov hlau molten tso tawm [C], kho cov ntsiab lus carbon rau 0.6-1.2% rau siab - carbon steel (xws li 45 # carbon steel) lossis cov cuab yeej hlau (xws li, T10 steel).

Advantage Over Traditional Carburizers:

Muab piv rau coke lossis graphite, HC Silicon 6515 cov pa roj carbon ntau dua sib npaug, tsis txhob sib cais cov pa roj carbon monoxide (ib qho tsis xws luag hauv tuab -cov khoom siv phab ntsa). Tuam Tshoj steel zeb tau tshaj tawm txog 20% txo qis hauv kev sib cais ntawm carbon tom qab hloov mus rau HC Silicon 6515.

2.3 Graphitization Promotion (Casting Application)

Mechanism:

Nyob rau hauv cam khwb cia hlau ntau lawm, silicon txhawb graphite nag lossis daus thiab refines graphite morphology (los ntawm flake mus spherical nyob rau hauv ductile hlau). Cov pa roj carbon ntxiv cov ntsiab lus carbon uas yuav tsum tau ua rau graphitization, kom ntseeg tau tias kev tsim cov nodule.

Qhov tshwm sim:

Ductile hlau kho nrog HC Silicon 6515 (raws li ib feem ntawm spheroidizers) muaj tensile zog Ntau dua los yog sib npaug rau 600 MPa thiab elongation Ntau dua los yog sib npaug rau 12%, ua tau raws li ISO 1083 cov qauv.

High Carbon Silicon 6515