VAD yog lub ntsiab lus ntawm lub tshuab nqus tsev arc degassing, VAD txoj kev yog tsim los ntawm Finkl tuam txhab thiab Mohr tuam txhab, yog li nws tseem hu ua Finkl-Mohr txoj kev los yog Finkl-VAD txoj kev. VAD rauv yog siv los ua cov pa roj carbon steel, cuab yeej steel, bearing steel, siab ductility steel thiab lwm yam.
VAD refining khoom yog tsim los ntawm steel ladle, lub tshuab nqus tsev, hluav taws xob arc cua sov khoom thiab ferroalloy ntxiv cov khoom.
VAD method specifications
- Cov nyhuv degassing zoo thaum cua sov, vim tias hluav taws xob arc cua sov ua tiav ntawm lub tshuab nqus tsev.
- Ua kom raug kho cov hlau ua kua dej kub, steel ladle sab hauv hauv ob sab phlu tuaj yeem tsim kom muaj cua sov, qhov kub thiab txias yog ruaj khov thaum lub sij hawm casting.
- Cov kua hlau tuaj yeem ua kom tag nrho thaum lub sijhawm ua kom zoo, steel kua muaj pes tsawg leeg yog ruaj khov.
- Loj npaum li cas ntawm cov hlau yuav muab ntxiv rau hauv cov kua steel, smelting hom kab yog dav.
- Slagging agents thiab lwm yam ntaub ntawv slagging tuaj yeem ntxiv rau desulfurization, decarburization. Yog tias cov phom oxygen tau nruab rau ntawm lub tshuab nqus tsev, lub tshuab nqus pa oxygen decarburization tuaj yeem siv rau smelting ultra low carbon stainless hlau.
Kev ua haujlwm ntawm VAD rauv steel ladle yog sib npaug rau hluav taws xob arc smelting rauv. VAD rauv ua haujlwm ntawm lub tshuab nqus tsev, steel ladle ua haujlwm hauv ob sab phlu raug cov kua qaub thiab cov kua nplaum molten slag tshuaj corrosion thiab cov tshuab ntxhua khaub ncaws, lub sijhawm no, hluav taws xob arc thermal tawg yog muaj zog, kub siab, kub qhov chaw yuav muaj kev puas tsuaj loj dua. Nrog rau qhov sib ntxiv ntawm tus neeg sawv cev slagging, slag corrosion yog qhov hnyav, tshwj xeeb tshaj yog slag kab cheeb tsam thiab sab sauv, tus nqi corrosion yog sai dua.
Kev xaiv ntawm VAD ladle hauv ob sab phlu refractory cov ntaub ntawv yuav tsum tau txais ntau hom refractory cib raws li cov khoom siv tes ua tiag tiag, yog li kev pabcuam lub neej ntev thiab cov khoom siv refractory txo.
Cov khoom siv refractory siv hauv VAD txoj kev feem ntau suav nrog: magnesia chrome cib, magnesia carbon cib, dolomite cib thiab lwm yam.
Ua hauj lwm hauv ob sab phlu feem ntau yog siv ncaj qha sib txuas magnesia chrome cib, rebonded magnesite chrome cib thiab semi rebonded magnesia chromite cib, magnesite carbon bricks, raug rho tawm haujlwm los yog unfired siab alumina cib thiab kub kub kho dolomite cib, thiab lwm yam. Cov hauv ob sab phlu feem ntau siv feem ntau daim ntawv thov magnesia chrome cib, fireclay cib thiab lub teeb yuag siab alumina cib.
Hauv qee qhov VAD furnaces, ladle hauv qab ua haujlwm hauv ob sab phlu feem ntau siv zircon cib thiab zircon refractory ramming sib tov. Hauv qab slag kab ib feem yog lined los ntawm siab alumina cib. Slag kab ib feem yog tsim los ntawm kev sib txuas ncaj qha magnesia chrome cib. Sab saum toj slag kab kub qhov chaw yog tsim los ntawm kev sib txuas ncaj qha magnesia carbon cib, thaum lwm qhov yog cib ua haujlwm los ntawm kev sib txuas ncaj qha magnesite chromite cib.
VAD ladles slag kab ib feem kuj txais kev sib txuas ncaj qha magnesia chrome cib thiab fused magnesia chrome cib. Ladle hauv qab ua haujlwm hauv ob sab phlu yog lined los ntawm zircon bricks. Cov ntsaws ntsaws yog siab alumina mullite raws li, thiab cov seem yog tag nrho ua los ntawm cov tsis muaj hluav taws kub alumina cib.
Post lub sij hawm: Feb-15-2022