FerroSilicon 72yog binary ferro alloy ntawm hlau (Fe) thiab silicon (Si), muaj npe rau nws cov ntsiab lus silicon ntawm 70% -74%, ua rau nws xaiv tus nqi zoo rau kev siv:
Cov khoom tseem ceeb:Si 70% -74%, Fe 25% -29%, nrog silicon cov ntsiab lus hloov pauv tsawg dua lossis sib npaug rau ± 2%, ua kom muaj kev ruaj ntseg; Kev txwv impurity: Al Tsawg dua lossis sib npaug rau 1.0%, C Tsawg dua lossis sib npaug rau 0.2%, S Tsawg dua lossis sib npaug rau 0.05%, P Tsawg dua lossis sib npaug 0.04%, zam impurities cuam tshuam rau qhov zoo ntawm cov khoom kawg;
Comparative zoo:Cov ntsiab lus silicon siab duaFeSi65 (60% -67%), ua rau zoo deoxidation thiab alloying efficiency; Tus nqi qis duaFeSi75 (72% -80%), haum rau loj -scale industrial ntau lawm.
Lub cev daim ntawv:Nyiaj -greyLoj (10-50mm), granules (1-10mm), los yoghmoov (40-200 mesh), haum rau kev pub mis sib txawv;
Tshuaj ua haujlwm:Silicon muaj lub zog tsis muaj zog ntawm cov tshuaj tiv thaiv nrog oxygen, ua rau nws muaj txiaj ntsig zoo deoxidizer; silicon thiab hlau tuaj yeem tsim cov khoom siv tshuaj, muaj peev xwm ua tau zoo heev.
Cov txheej txheem tseem ceeb ntawm FeSi72
(1) Kev lag luam Steelmaking: Cov khoom siv raw rau deoxidation thiab alloying
Deoxidation muaj nuj nqi:
Cov tshuaj tiv thaiv mechanism:Silicon tau txais qhov kev hloov pauv nrog FeO hauv cov hlau molten (Si + 2FeO → SiO₂ + 2} Fe). Qhov ntom ntawm SiO₂ generated yog qis dua li cov hlau molten, ua kom yooj yim rau ntab thiab tshem tawm nrog cov slag;
Quantitative effect:Thaum ntxiv ntawm 0.3% -0.8% ntawm qhov loj ntawm cov hlau molten, cov pa oxygen ntawm cov hlau molten tuaj yeem raug txo los ntawm 80-100ppm rau 30-50ppm, nrog rau deoxidation efficiency 30% siab dua FeSi65.
Alloying muaj nuj nqi:
Strengthening Mechanism:Silicon atoms koom ua ke rau hauv ferrite lattice, ua rau cov lattice distortion, cuam tshuam kev txav txav, thiab ua kom lub zog thiab hardness ntawm cov hlau;
Daim ntawv thov sib txawv Steel Qib:
Tsawg- alloy steel qauv:Ntxiv 0.2% -0.5% nce tensile lub zog los ntawm 10% -15%, tawm lub zog ntau dua los yog sib npaug rau 345MPa;
Caij nplooj ntoos hlav steel:Ntxiv 0.4% -0.8% nce elastic txwv los ntawm 20% -25%, qaug zog lub neej txuas ntxiv los ntawm 1.5-2 zaug;
Hluav taws xob silicon steel:Ntxiv 2.0% -3.5% txo cov hlau poob los ntawm 10% -15%, nce magnetic permeability los ntawm 15%, haum rau transformer thiab lub cev muaj zog cores.
(2) Kev lag luam Foundry: Cov khoom tseem ceeb rau Inoculation thiab Spheroidization
Daim ntawv thov Inoculant (Grey cam khwb cia hlau / Ductile cam khwb cia hlau):
Mechanism ntawm Action:Txhawb nqa graphitization nag lossis daus, refines grain loj, thiab zam dawb cam khwb cia hlau tsim nyiam;
Quantitative Effects:Ntxiv 0.2% -0.5% (grey cam khwb cia hlau) los yog 0.1% -0.3% (cov ntaub ntawv cam khwb cia hlau) ntawm cov hlau molten loj nce lub tensile lub zog ntawm castings los ntawm 200MPa mus rau 280MPa, txhim kho tej yam toughness los ntawm 133%, thiab txo cov seem seem ntawm 8% mus rau 3%.
Pab optimization:
Txhim kho molten hlau fluidity, txo viscosity los ntawm 15% -20%, txo qhov tsis xws luag xws li "tsis txaus pouring" thiab "txias kaw," thiab nce tus nqi ntawm complex castings los ntawm 10% -15%;
Txhim kho machining kev ua tau zoo, txo cov cuab yeej nplaum thaum txiav, thiab txo cov cuab yeej siv los ntawm 40%.
(3) Ferroalloy Ntau Lawm: Siab -Kev Ua Tau Zoo Txo Tus Neeg Saib Xyuas rau qis-Carbon Alloys
Application Logic:
FeSi72% muaj cov ntsiab lus carbon tsawg (tsawg dua lossis sib npaug li 0.2%) thiab muaj zog silicon txo cov khoom, uas tuaj yeem zam cov pa roj carbon ntxiv hauv kev tsim cov khoom qis -carbon ferroalloys thaum tshem tawm cov pa oxygen impurities los ntawm raw khoom;
Core Advantages:
Piv nrog rau siab -cov pa roj carbon txo cov neeg ua haujlwm, nws tuaj yeem txo cov txheej txheem decarburization tom qab, txo lub voj voog ntau lawm los ntawm 10%-15%, thiab txo kev siv hluav taws xob los ntawm 8%-12%.
(4) Lwm qhov chaw siv tseem ceeb
Magnesium Smelting Kev Lag Luam (Pidgeon Txheej Txheem):
Muaj nuj nqi:Raws li ib tug txo tus neeg sawv cev, nws reacts nrog calcined dolomite (CaO・MgO) (2CaO・MgO + Si → 2Mg↑ + Ca₂SiO₄) los tsim gaseous magnesium vapor;
Quantitative Parameters:1.2-1.3 tons ntawm 72 # FerroSilicon tau noj rau txhua tuj ntawmmagnesium hlautsim, thiab magnesium rov qab tus nqi tuaj yeem ncav cuag 85% -90%, ua nws cov khoom siv tseem ceeb rau magnesium smelting.
Kev lag luam tshuaj:
Siv rau synthesizing organosilicon monomers (xws li methylchlorosilane), silanes, thiab lwm yam, nrog ib tug silicon conversion npaum li cas ntau dua los yog sib npaug li 90%; Tom qab tau ua rau hauv cov hmoov silicon, nws tuaj yeem siv los ua cov khoom siv tshuaj lom neeg los txhim kho cov tshuaj tiv thaiv thiab kev ruaj ntseg.
Kev xaiv thiab kev siv tswj cov ntsiab lus ntawm FeSi72
(1) Kev Xaiv Logic: Sib phim daim ntawv thiab purity raws li qhov scenario
| Daim ntawv thov Scenario | Cov qauv pom zoo | Cov ntsiab lus tseem ceeb xaiv |
| Hloov / Hluav taws xob rauv Steelmaking | Lump puab (10-50mm) | Si Ntau dua lossis sib npaug rau 72%, Al Tsawg dua lossis sib npaug rau 0.8%, deoxidation efficiency nyiam |
| Casting inoculation | granular (1-10 hli) | uniform muaj pes tsawg leeg, tsis txhob agglomeration |
| Tshuaj Synthesis / Magnesium Smelting | Hmoov (40-200 mesh) | Loj qhov chaw tshwj xeeb, ceev cov tshuaj tiv thaiv |
| High-kawg alloy steel ntau lawm | Tsawg-Aluminium hom (Al Tsawg dua lossis sib npaug li 0.5%) | Txo Al₂O₃ suav nrog thiab txhim kho steel purity |
(2) Kev ceev faj siv
Ntxiv Sijhawm thiab Txoj Kev:
Steelmaking: Ntxiv nrog rau qhov ntws thaum lub converter tapping ncav cuag 1/3; ntxiv nyob rau tom qab theem ntawm hluav taws xob rauv nqi melting (1500-1550 degree);
Casting: Ntxiv 1-3 feeb ua ntej nchuav, siv txoj kev yaug kom zoo sib xws.
Cia thiab Tiv Thaiv:
Khaws rau hauv qhov chaw qhuav thiab qhov cua, tsis txhob ya raws oxidation (oxidation yuav ua rau SiO₂ zaj duab xis, txo kev ua haujlwm), lub sijhawm cia tsis pub dhau 6 lub hlis;
Plua plav generated thaum lub sij hawm ua yuav tsum tau sau los ntawm lub hnab lim, plua plav concentration tsawg dua los yog sib npaug zos rau 10mg / m³, kom tsis txhob muaj mob.
Kev Lag Luam Trends thiab Kev Txhim Kho Cov Lus Qhia
Upgrading rau Lower Hybridization:High-kawg steel thiab precision casting muaj kev txwv nruj dua rau impurities hauv FeSi 72, ua rau muaj kev xav tau ntxiv rauqis- txhuas (Al Tsawg dua lossis sib npaug li 0.3%)thiab qis-sulfur (S Tsawg dua lossis sib npaug rau 0.03%) qib;
Green Production:FeSi72 alloy smelted siv hluav taws xob ntsuab tuaj yeem txo cov pa roj carbon emissions ntau dua 50%, ua raws li lub ntiaj teb sib txawv ntawm carbon neutrality;
Functional Expansion:Kev tsim kho "FeSi72 + Rare Earth"composite alloys uas integrate deoxidation, desulfurization, thiab inoculation functions, simplifying industrial txheej txheem.
