Cov khoom siv refractoryrau induction furnaces yuav tsum tau xaiv raws li lub rauv hom, rauv qauv, hom hlau uas raug smelted, smelting txheej txheem thiab kev khiav hauj lwm tej yam kev mob. Nyob rau tib lub sijhawm, cov theem thiab lub cev lub zog ntawm cov khoom siv refractory los ntawm chav tsev kub mus rau qhov kub thiab txias yuav tsum tau txiav txim siab. Cov txheej txheem hloov pauv thiab cov txheej txheem, nrog rau kev thov cov ntaub ntawv ntawm cov khoom siv refractory, thiab lwm yam.
1. Thaum melting cam khwb cia hlau thiab tsis-ferrous hlau nyob rau hauv ib tug coreless induction rauv, SiO2, ZrO2 · SiO2 thiab complex theem refractory khoom uas muaj li ntawm lawv feem ntau yog xaiv. Vim tias ZrO2·SiO2 decomposes ntawm qhov kub siab los ua ZrO2 thiab fSiO2, uas yog sib npaug ntawm cov khoom siv, yog li muab cov yas kub kub thiab corrosion tsis kam rau cov khoom, qhia tias ZrO2 tuaj yeem txuas ntxiv lub neej kev pab cuam ntawm SiO2- raws li cov khoom siv refractory.
2. Coreless induction furnaces tuaj yeem siv cov txheej txheem acidic steelmaking lossis alkaline steelmaking txoj kev. Cov khoom siv refractory siv nyob rau hauv acid steelmaking yog tib yam li cov siv smelting cam khwb cia hlau, thaum nruab nrab los yog alkaline refractory cov ntaub ntawv yog siv nyob rau hauv alkaline steelmaking.
3. Thaum ua hlau nyob rau hauv me me coreless induction furnaces, magnesia refractory cov ntaub ntawv feem ntau yog siv rau hauv ob sab phlu. Txawm li cas los xij, cov khoom siv refractory no muaj cov thermal shock tsis zoo thiab yooj yim nkag los ntawm slag, ua rau cov txheej txheem tev thiab kev puas tsuaj ntxov ntxov, yog li nws nyuaj rau hloov. High-capacity, intermittent kev ua haujlwm siv ib puag ncig.
4. Thaum ua hlau nyob rau hauv nruab nrab-qhov loj me coreless induction rauv nyob rau hauv ib txwm ua hauj lwm, cov ntaub ntawv refractory ua los ntawm MgO-Al2O3 los yog MgO-Spinal mixtures yog siv, ob qho tib si ntawm uas yog MgO-spind series refractory cov ntaub ntawv.
5. Qhov nruab nrab-qhov loj me tsis muaj qhov cub hluav taws xob uas siv ntau yam khoom siv hlau ua cov khoom siv los ua cov hlau siv Al2O3-MgO (txog 10% MgO) cov khoom siv refractory .
6. Qhov nruab nrab qhov cub hluav taws xob siv hluav taws xob uas siv cov khoom siv hluav taws xob txo qis raws li cov khoom siv ntxiv yuav tsum siv MgO-Al2O3-Cr2O3 (ntxiv chromium ore) cov ntaub ntawv refractory. Txij li thaum MgO, Al2O3, Cr2O3, thiab lwm yam ua rau lub cev sib xyaw spinel thaum rhuab ntawm qhov kub, nws muaj hluav taws kub tsis kam thiab muaj zog corrosion kuj. Raws li qhov tshwm sim, nws qhov kev hloov pauv mus rau high-erosion hlau / manganese slag yog txhim kho, yog li nws cov kev pab cuam lub neej zoo dua. ntev.
7. Loj coreless induction furnaces siv spinel refractory khoom ua los ntawm pre-synthesized Spinel granules, los yog ib tug sib tov muaj li ntawm MgO (coarse hais, nplua hmoov), Spinel (nruab nrab hais, nplua hmoov) thiab Al2O3 hais. Nws yog MgO-Spine refractory ua los ntawm kev ua tib zoo ntsuas qhov piv ntawm pre-synthesized Spinel thiab hauv-situ Spinel. Ob hom ntawm cov ntaub ntawv refractory tuaj yeem hloov mus rau kev ua haujlwm ntawm cov coreless induction furnaces loj.
8. Kev ua haujlwm kub ntawm cored induction rauv rau smelting grey hlau thiab cam khwb cia hlau yog 1450 ~ 1550 degree, uas tsis siab heev. Txawm hais tias qhov kub thiab txias ntawm qhov inductor molten trench thiab lub tsho dej yog siab li 1600 ~ 1700 degree, kev xaiv cov ntaub ntawv refractory tsis nyuaj heev vim tias dej txias yog siv.
9. Coreless induction furnaces feem ntau siv cov txheej txheem knotting los tsim cov linings, thaum cored induction furnaces feem ntau siv cov txheej txheem los tsim cov linings. Knotted lined refractory khoom tsim ib txheej sintered thaum lub sij hawm sintering txheej txheem. Txhawm rau kom tau txais kev hloov pauv siab, nws xav tias qhov nthuav dav ntawm sintered txheej thiab qhov nce hauv lub zog ua haujlwm maj mam. Yog li ntawd, cov qauv tsim thiab cov khoom siv raw xaiv ntawm cov ntaub ntawv refractory yuav tsum xyuas kom meej tias qhov chaw ua hauj lwm nyob rau hauv kev sib cuag nrog lub siab kub yaj thaum lub sij hawm ua hauj lwm hauv ob sab phlu tuaj yeem sintered los ua ib txheej sintered nrog ib lub zog, thaum lub txheej tsis ua hauj lwm yuav tsum. tswj cov txheej txheem tawg ua ntej sintering. Cov qauv zoo li no muaj kev ua haujlwm ntawm kev tiv thaiv kev tsiv teb tsaws ntawm cov kab nrib pleb hauv cov txheej txheem ua haujlwm thiab nqus cov kab nrib pleb, yog li tso lub hauv paus zoo rau kev ncua kev pab cuam lub neej ntawm hauv ob sab phlu.
