ZhenAnferrosilicon nitride hmoovchaw tsim tshuaj paus qhia cov khoom no
Daim ntawv thov ntawm ferrosilicon nitride: Nitrogen keeb tuaj yeem ua ke nrog peb lub micro-alloying ntsiab ntawm niobium, vanadium thiab titanium hauv hlau. Thaum lub sij hawm solidification thiab dov txheej txheem, me me theem thib ob hais yog precipitated los mus cuam tshuam dislocation txav, ua tiav niobium tsawg, Vanadium thiab titanium muaj peev xwm ua rau kom cov yield zog ntawm steel, thiab nws yog economical siv nitrogen los ntxiv dag zog rau steel.
| Khoom | N | Si | Fe | O | Dej | granularity |
| FeSi3N 4 | 28-32% | 48-52% | 12-17% | 2.5% max | 0.3% max | 0-50mm Tshwj xeeb granularity tuaj yeem kho tau |
Tam sim no, kev lag luam steel feem ntau siv ntxiv cov khoom sib xyaw nitride (los yog cov khoom zoo sib xws) thaum lub sij hawm tapping txheej txheem los yog ntxiv nitrogen rau cov hlau molten nyob rau hauv daim ntawv ntawm hlau pub thaum lub sij hawm refining txheej txheem. Ob txoj kev saum toj no muaj teeb meem nrog kev hloov pauv loj ntawm cov khoom lag luam thiab cov nqi siab. . Cov nitrided alloy yog ntxiv ncaj qha thaum lub sij hawm tapping txheej txheem. Vim tias muaj cov pa oxygen ntau ntawm cov hlau molten (300-500ppm, tus naj npawb ntawm peroxidation furnaces yuav siab dua), cov hlau nyob hauv cov hlau yog oxidized.
Nyob rau tib lub sijhawm, cov roj solubility hauv cov hlau molten yog txwv. Thaum cov pa oxygen hauv cov hlau molten yog cov ntsiab lus siab dua, cov nitrogen tsawg tuaj yeem yaj. Yog li ntawd, nitrogen alloying yog ua thaum lub sij hawm tapping txheej txheem, thiab cov tawm los yog tsawg. Nitrogen alloying thaum lub sij hawm refining txheej txheem muaj cov txiaj ntsig zoo dua, tab sis cov dej ntxiv yuav tsum tau ntxiv tom qab cov hlau molten nkag mus rau hauv qhov cub refining. Cov khoom siv slag-ua yog siv rau slag-ua thiab hluav taws xob rwb thaiv tsev thiab kub nce kom ntseeg tau tias cov hlau molten nyob rau hauv qhov kub thiab txias, ua rau cov nqi nce ntxiv.
Hauv cov txheej txheem steelmaking, cov hlau molten yog ua ke nrog ferrosilicon nitride kom muaj nitrogen. Txoj kev no quab yuam ntxiv nitrogen rau cov hlau molten tom qab lub converter yog tapping, kom cov hlau muaj nitrogen txaus ua ke nrog micro-alloying ntsiab. Thaum qis Theem thib ob hais yog tag nrho cais nyob rau hauv cov ntsiab lus ntawm micro-alloying ntsiab, tso cai rau cov hlau kom tau zoo dua txhua yam khoom, txuag alloy noj, txo tus nqi ntawm steel, thiab daws qhov teeb meem ntawm fluctuating nitrogen yield nyob rau hauv lub converter txheej txheem thiab tus nqi ntawm nitrogen ntxiv nyob rau hauv cov txheej txheem refining. Teeb meem siab.
Ferro silicon nitride yog cov khoom siv ferroalloy feem ntau yog tsim los ntawm Si3N4, nrog rau cov hlau dawb, uas tsis yog-silicon nitride, thiab lwm yam khoom me me.
Kev lag luam ferrosilicon nitride rau refractory yog cov hmoov dawb los yog xim av, thaum hlau ua ferrosilicon nitride yog dawb dawb granular.
Granular ferrosilicon nitride feem ntau yog siv hauv silicon-oriented steel lossis lwm yam hlau (xws li HRB400 rebar) uas siv nitrides los txhim kho lub zog.