Ferrosiliconmuaj ntau heev nyob rau hauv kev lag luam steelmaking. Nws yog tsuas yog siv raws li adeoxidizerthiabAlloying Tus Neeg Sawv CevCov. Muaj cov txheej txheem rau deoxidation hauv cov txheej txheem statmaking. Txij li silicon thiab oxygen muaj ib qho muaj zog sib xws, Fesi tau siv los ua deoxidizer, yog li cov khoom zoo ntawm cov hlau tsim tau zoo. Hauv Cam Nrhab Kev Lag Luam, nws yog siv los ua ib qho inoculant thiab spheroidizer.

FERRO Silicon Alloy rau Casting yog feem ntau hauv daim ntawv pob lossis granular, thiab nws daim foos yuav tsum tau yoog rau cov txheej txheem ntxiv:

Pob ferrosilicon:Qhov loj me 50 -} 150mm, haum rau hauv {2} recting deacas (ncaj qha ntxiv rau cov npoo av ntawm cov molten hlau);
Granular Ferrosilicon:Qhov loj me 1 {-} 10 hli, haum rau inoculation (uniformly ntxiv rau cov khoom siv hauv molten lossis hauv-ntws inoculation khoom kom tsis txhob muaj cov khoom siicon ntau dhau los);
Hmoov (qhov loj me<1mm) is strictly prohibited: Hmoov zoo rau ntab nyob rau hauv lub molten hlau, tshwm sim hauv kev tsis sib xws deoxidation / inoculation thiab hmoov av ua qias tuaj.

Ferro Silicon For Fundry

Tshuaj Muaj Tshuaj

Teem nqi	Tshuaj lom neeg muaj pes tsawg leeg (feem ntau feem)%%
	Si	Al	Ca	Mn	Cr	P	S	C
		Tsawg dua los yog sib npaug
Fesi90V1.5	87.0~95.0	1.5	1.5	0.4	0.2	0.04	0.02	0.2
Fesi9oal3.0	87.0~95.0	3	1.5	0.4	0.2	0.04	0.02	0.2
Fesi75al0.5-a	74.0~80.0	0.5	1	0.4	I0.3	0.035	0.02	0.1
Fesi75al0.5-b	72.0~80.0	0.5	1	0.5	0.5	0.04	0.02	0.2
Fesi75al1.0-a	74.0~80.0	1	1	0.4	0.3	0.035	0.02	0.1
Fesi75al1.0-b	72.0~80.0	1	1	0.5	0.5	0.04	0.02	0.2
Fesi75al1.5-a	74.0-80.0	1.5	1	0.4	0.3	0.035	0.02	0.1
Fesi75al1.5-b	72.0~80.0	1.5	1	0.5	0.5	0.04	0.02	0.2
Fesi75al2.0-a	74.0~80.0	2	1	0.4	0.3	0.035	0.02	0.1
Fesi75al2.0-b	72.0~80.0	2		0.5	0.5	0.04	0.02	0.2
Fesi75-a	74.0~80.0			0.4	0.3	0.035	0.02	0.1
Fesi75-b	72.0~80.0			0.5	0.5	0.04	0.02	0.2
Fesi65	65.0~72.0			0.6	0.5	0.04	0.02

Lub luag haujlwm ntawm ferrosilicon hauv casting

1. Txhim kho cov qauv tsim qauv ntawm cov chaw cas

FerrosiliconMuaj peev xwm txo qhov melting taw tes ntawm castings thiab nce cov kua lub sijhawm ntawm castings, uas yog conducive rau kev txhaws sau thiab solidification ntawm castings. Nyob rau tib lub sijhawm, ferrosilicon tuaj yeem ua rau cov qauv kev sib raug zoo ntawm cov nrum ntau dua, txo qhov muaj zog ntawm lub zog thiab tawv ntawm cov castingings.

2. Kho cov ntawv sib xyaw ntawm Molten Hlau

Hauv kev ua pov thawj, nws tuaj yeem ua rau cov leej faj, carbon, phosphorus thiab lwm yam kub faib tawm, yog li ntawd cov hlau tsis sib haum xeeb, yog li tsis txhob ua kom cov pwm thiab tsis txhob suav nrog ntawm cov npoo ntawm lub pov.

3. Txhim kho qhov chaw zoo ntawm cov cuab yeej

Fesi alloy tuaj yeem txo cov hlau thiab nws cov oxides thaum lub sijhawm ua haujlwm, thiab txo cov qhov tsis xws luag thiab shrinkage qhov ntawm cov npoo ntawm cov cuab yeej. Nyob rau tib lub sijhawm, ferrosilicon tuaj yeem txhim kho cov kev sib txawv saum npoo av, txhim kho saum npoo, thiab ua kom pom cov tsos smoother thiab zoo nkauj dua.

Ferro Silicon For Fundry

Cov khoom lag luam cov cwj pwm thiab kev siv tshuab ntawm kev ua

Hauv cov txheej txheem casting, tus tseem ceeb ntawm ferrosilicon stems los ntawm silicon cov tshuaj lom neeg thiab nws muaj peev xwm tswj hwm cov qauv hlau hlau. Nws cov txheej txheem tshwj xeeb ntawm kev ua yog raws li hauv qab no:

1. Deoxidation: Purifies Molten Hlau thiab Txo Cov Casting Distracts

Cov roj ntsha ntau dhau rau hauv cov hlau molten ua ke nrog cov pa roj carbon los tsim co / co-gases, ua rau porosity thiab cov duab xuab zeb hauv cov nrum; Los yog ua ke nrog hlau los ua feo, txo cov kab ua kom huv thiab ua kom muaj kev pheej hmoo ntawm cov kab nrib pleb. Silicon yog tshuaj ntau dua ntau dua li cov hlau thiab reacts uas nyiam nrog oxygen:

Si {+ 2 feo → siio₂ + 2 fe

The resulting SiO₂ has a low melting point (approximately 1713℃) and combines with impurities such as Al₂O₃ and MnO in the molten iron to form a low-melting-point composite slag. Lub ntsej muag tsis tshua muaj qhov qis dua cov hlau molten (kwv yees li 2.2 g / cmÃ, piv rau kwv yees li 7.8 g / cm³ rau molten hlau). Cov nplais me me no tuaj yeem raug tshem tawm los ntawm cov txheej txheem slagming, ua kom huv cov hlau thiab txo cov pa roj thiab ua kom tsis taus pa ntawm lawv qhov chaw.

2. Inoculation: Refining cov noob nplej loj thiab txhim kho cov khoom siv cam khwb cia

Rau feem ntau yog siv casting alloys xws li cov hlau cam khwb cia hlau thiab cov qauv flocite, ua rau muaj lub zog tawg thiab flocen Ntxiv ib qho me me ntawm ferrosilicon (inoculant) rau molten hlau tuaj yeem muab cov micritting microstration microstration microstration microstration microstructure hauv txoj kev hauv qab no:

Muab kev kub ntxhov heterogeneous nucleation Cov thawj coj:

Lub sicter nyob rau hauv ferrosilicon txhawb cov nag lossis daus ntawm cov xim molten, tiv thaiv co graphite los ntawm fragmenting lub matrix;

Kho lub eutectic kub:

Silicon Lowers lub utectic kub ntawm cam khwb cia hlau (lub zog tshiab ntawm cov ntsiab lus huv si 114), thaum lub sijhawm xa khoom seem.

Tom qab inoculation, lub tensile lub zog ntawm cov hlau pov cov xim txho

3. Kev ua haujlwm: txhim kho tshwj xeeb Casting Cov Khoom Siv

When castings require specialized properties such as high-temperature resistance, wear resistance, and corrosion resistance (eg, heat-resistant castings and wear-resistant machine tool guides), ferrosilicon can be used as an alloying element. Kho cov lus silicon cov ntsiab lus ua kom zoo tshaj ua cov khoom:

High - kub kuj:

Thaum cov ntsiab lus silicon tau nce rau 5% -7%, tso cai rau nws tiv thaiv lub tshuab thaiv tsev ntawm 600-800 DEGREEN & FOOLER GRATS).

Hnav Kuj:

Cov theem ua FE₃SI tsim los ntawm silicon thiab hlau muaj lub hardness siab (HV kwv yees li 800), txhim kho cov ris qhov chaw tawm ntawm cov npoo av (piv txwv li, thee zeb Liners).