Nrog rau kev lag luam steel thoob ntiaj teb tau nce mus rau qhov zoo dua thiab kev ua tau zoo dua, cov kev xav tau nruj rau steel purity thiab kev tswj hwm suav nrog tau ua cov calcium silicon alloys ib qho tseem ceeb ntawm cov khoom siv refining nyob rau hauv niaj hnub steelmaking txheej txheem.

AON METALS' steelmaking-qib silicon calcium alloys yog cov alloys sib xyaw ua los ntawm cov txheej txheem electrosilicon thermal. Lawv muaj cov ntsiab lus tseeb ntawm cov ntsiab lus tseem ceeb calcium (Ca) thiab silicon (Si), nrog kev tswj nruj ntawm cov impurities xws li carbon (C), sulfur (S), thiab phosphorus (P). Kev sib xyaw ua ke muaj zog deoxidation, sib sib zog nqus desulfurization, thiab kev hloov pauv hauv kev suav nrog, nws yog tus qauv tsim los tsim cov qib siab -kawg steel xws li pipeline steel, automotive steel, bearing steel, thiab spring steel.

Element	Cov ntsiab lus ntau	Core Functions hauv Steelmaking
Ca	28%-35%	High -kev ua tau zoo deoxidation thiab desulfurization:Muaj zog affinity rau oxygen thiab sulfur, ua kom siab -melting-point CaO thiab CaS; Kev hloov pauv suav nrog: Hloov cov nkig Al₂O₃ rau hauv cov kua calcium aluminate.
Si	55%-65%	Synergistic deoxidation:Ua cov khoom sib xyaw deoxidation nrog calcium, yooj yim flotation; Alloying:Qee cov silicon yog absorbed los ntawm cov hlau molten, ua kom muaj zog.
Fe	Tsawg dua lossis sib npaug li 5%	Ua raws li tus neeg nqa khoom, ua kom ruaj khov thiab sib xws ntawm cov alloys hauv molten steel.
C	Tsawg dua los yog sib npaug li 0.5%	Kev tswj nruj nruj, haum rau qis-carbon thiab ultra- qis- carbon steel smelting.
S,P	Tsawg dua lossis sib npaug li 0.03%, Tsawg dua lossis sib npaug li 0.04%	Cov ntsiab lus tsis zoo: nruj me ntsis tswj kom tsis txhob muaj kev phom sij rau cov hlau.

Calcium silicon

Lub luag hauj lwm irreplaceable ntawm silicon calcium alloys nyob rau hauv steelmaking

1. Synergistic thiab muaj txiaj ntsig Deoxidation, txo qis cov ntsiab lus oxygen

Mechanism:Calcium muaj qhov tsis tshua muaj kuab oxygen equilibrium concentration (<10ppm) in molten steel at 1600℃, making its deoxidizing capacity far superior to silicon and manganese. In SiCa alloys, calcium rapidly and deeply deoxidizes, generating CaO that combines with SiO₂ to form low-melting-point calcium silicate, which easily polymerizes and floats to the surface for removal.

Empirical pov thawj:Tom qab kawg deoxidation thiab calcium kev kho mob siv CaSi alloys, tag nrho cov ntsiab lus oxygen nyob rau hauv molten steel yuav ruaj khov tswj ntawm tsawg dua los yog sib npaug rau 20ppm, thiab rau ib co steel qib, nws muaj peev xwm ncav cuag tsawg dua los yog sib npaug rau 10ppm, txo ntau tshaj 40% piv rau deoxidation siv tsuas yog txhuas los yog ferrosilicon.

2. Sib sib zog nqus Desulfurization, ua raws li cov qauv nruj

Mechanism:Calcium reacts nrog sulfur los tsim CaS ruaj khov heev, uas yog insoluble hauv molten steel, ua rau nws tseem ceeb heev rau kev ua tiav ultra- qis sulfur steel ([S] Tsawg dua lossis sib npaug li 0.001%) smelting.

Cov ntaub ntawv:Pub akab kabmus rau theem kawg ntawm LF refining tuaj yeem txhim kho desulfurization efficiency los ntawm 25-30% piv rau cov tshuaj txiv qaub hmoov, tshwj xeeb tshaj yog tsim nyog rau kev tsim cov raj xa dej resistant rau hydrogen-induced cracking (HIC).

3. Kev hloov kho ntxiv, kov yeej qhov teeb meem "Sprue Clogging".

Mechanism:High-melting-point, clustered Al₂O₃ inclusions (melting point 2050 degree) generated los ntawm txhuas deoxidation yog lub hauv paus ua rau nruam casting nozzle clogging thiab qaug zog tawg hauv hlau. Calcium nyob rau hauv siliconcalcium alloy tuaj yeem txo Al₂O₃ los ua kom qis- melting- taw tes kua calcium aluminate (xws li 12CaO·7Al₂O₃, melting point ~ 1455℃).

Cov teebmeem:Cov kev hloov pauv suav nrog yog kheej kheej, me me, thiab sib npaug sib faib, tiv thaiv nozzle clogging thaum lub sij hawm casting thiab ua kom muaj pes tsawg leeg ntawm cov cua sov sib txuas. Nyob rau tib lub sijhawm, qhov cuam tshuam kev cuam tshuam ntawm cov hlau tau nce ntau dua 20%, thiab lub neej qaug zog txuas ntxiv, ua tau raws li cov kev cai nruj ntawm kev lag luam tsheb thiab aerospace.

4. Precise control of the dosage for optimal performance

Tsis txaus noj:Kev tshem tawm tsis tiav ntawm cov pa oxygen thiab sulfur, tsis ua tiav Al₂O₃ hloov kho, muaj kev pheej hmoo siab ntawm cov nozzle blockage, thiab nce nkig inclusions hauv cov hlau.

Kev noj tshuaj txaus:High purity ntawm molten steel, inclusions yog me me, kheej kheej, thiab uniformly faib, ua kom pom kev sib npaug ntawm lub zog, toughness, thiab plasticity nyob rau hauv cov hlau.

Kev noj ntau dhau:Tej zaum yuav tsim CaS ntau dhau lossis siab -calcium aluminates, uas tuaj yeem txo cov hlau ua haujlwm lossis ua rau cov ntsiab lus calcium ntau dhau, cuam tshuam rau cov khoom kub ua haujlwm.

calcium silicon Alloy

Kev cuam tshuam rau steel zoo

Purity:

Qhov tsim nyog qhov sib ntxiv tuaj yeem tshem tawm cov impurities xws li oxygen thiab sulfur hauv cov hlau molten thiab txhim kho cov purity ntawm cov hlau. Tsis txaus ntxiv thiab tsis txaus tshem tawm ntawm impurities yuav ua rau ntau oxides thiab sulfides nyob rau hauv cov hlau, txo qhov zoo ntawm cov hlau. Kev sib ntxiv ntau dhau, txawm hais tias cov impurities raug tshem tawm ntau dua, tuaj yeem qhia cov impurities tshiab, xws li calcium ntau dhau, uas tuaj yeem tsim qee qhov teeb meem calcifications hauv cov hlau, cuam tshuam rau kev ua haujlwm ntawm cov hlau.

Mechanical zog:

Tus nqi tsim nyog ntawm SiCa alloy tuaj yeem txhim kho cov txheej txheem ntawm cov hlau, ua kom zoo dua cov nplej, thiab txhim kho cov khoom siv ntawm cov hlau, xws li lub zog, toughness thiab plasticity. Tsis txaus ntxiv tsis tuaj yeem ua tiav nws lub luag haujlwm hauv kev txhim kho cov txheej txheem ntawm cov hlau, thiab cov khoom siv kho tshuab tsis zoo tuaj. Kev sib ntxiv ntau dhau yuav ua rau muaj kev hloov pauv hauv lub koom haum ntawm cov hlau, uas ua rau txo qis ntawm cov hlau thiab cov teeb meem xws li txias brittleness.

Inclusion morphology:

Qhov tsim nyog tus nqi ntawm inclusions tuaj yeem ua rau cov inclusions me me, dispersed thiab spherical, txo qhov kev puas tsuaj rau steel kev ua tau zoo. Yog hais tias tus nqi ntawm inclusions tsis tsim nyog, morphology thiab kev faib ntawm cov inclusions yuav tsis zoo, thiab cov inclusions tej zaum yuav txawm aggregate, txo cov qaug zog kev kawm thiab corrosion kuj ntawm cov hlau.

Tshuaj muaj pes tsawg leeg:

Thaum tus nqi ntawm cov khoom suav nrog tsim nyog, cov ntsiab lus silicon thiab calcium hauv cov hlau tuaj yeem ncav cuag qhov xav tau thiab ua tau raws li qhov yuav tsum tau ua ntawm qib steel. Kev sib ntxiv ntau dhau los yog tsawg dhau yuav ua rau cov ntsiab lus ntawm silicon thiab calcium nyob rau hauv cov hlau tsis txawv ntawm lub hom phiaj tus nqi, cuam tshuam rau kev ua haujlwm ntawm cov hlau.

Calcium silicon Alloy

FAQ

Q1: Vim li cas txhuas cov ntsiab lus hauv silicon calcium alloys tseem ceeb rau kev tswj?

A1:Ib lub hom phiaj tseem ceeb ntawm kev kho calcium yog hloov pauv Al₂O₃ suav nrog. Yog hais tias cov ntsiab lus ntawm txhuas nyob rau hauv calcium silicon alloy nws tus kheej siab dhau lawm, nws yuav qhia ntxiv aluminium, ua rau tag nrho Al₂O₃ nyob rau hauv cov hlau thiab loading tom qab calcium kev kho mob. Yog li ntawd, siab - zoo sica alloys (tshwj xeeb tshaj yog cov siv nyob rau hauv pipeline steel thiab bearing steel) yuav tsum tau nruj me ntsis tswj cov ntsiab lus txhuas (tsawg dua los yog sib npaug rau 2.4%).

Q2: Dab tsi yog qhov zoo ntawm CaSi alloys piv rau ferrosilicon thiab hlau calcium?

A2:

vsFerrosilicon: Silicon calcium alloys tuaj yeem hloov kho qhov sib xyaw ua ke thiab ua tiav qhov sib sib zog nqus desulfurization, uas fesi alloy tsis tuaj yeem ua tiav.

vs Calcium hlau: Hlau calcium yog heev reactive, muaj ib tug tsawg ntom (yooj yim floats), reacts hnyav thaum ntxiv rau molten hlau, muaj ib tug tsis tshua muaj yield, thiab ua ntau fumes. Calcium nyob rau hauv silicon-calcium alloys muaj nyob rau hauv daim ntawv alloy, muaj ib tug nruab nrab ceev, reacts stably, muaj ib tug siab yield (5-10 npaug ntawm cov calcium ntshiab), thiab muaj kev nyab xeeb.

Q3: Yuav ua li cas thiaj li yuav tsum tau khaws cov silicon calcium alloys? Lub neej txee yog dab tsi?

A3:Calcium yog ib qho khoom siv reactive, yog li kev khaws cia yog qhov tseem ceeb:

Ntim: Khaws cov ntim khoom qub (cov ntawv txhuas / lub hnab nqus tsev) kom zoo.

Qhuav: Khaws rau hauv ib lub tsev rau khoom hauv tsev nrog cov av noo txheeb ze<60%.

Ua ntej-Nyob rau hauv, Ua ntej- Tawm: Nws raug nquahu kom siv tsis pub dhau 6 lub hlis.

Yog tias cov khoom raug pom tias yog clumping, hmoov, lossis cua sov, nws yuav ua kom ntub thiab tsis ua haujlwm; txwv tsis pub siv.

Cim npe nrov: Tuam Tshoj calcium silicon alloy steelmaking khoom, Tuam Tshoj calcium silicon alloy steelmaking khoom manufacturers, lwm tus neeg, Hoobkas