Kev tsim kho cua sov tshuab rau qis-kub Cast Billet ntawm Oriented Silicon Steel

Nrog rau kev tshawb fawb tob zuj zus mus, qhov qis-kub casting billet cua sov thev naus laus zis yuav txhawb nqa ntau dua thiab siv tau, uas yuav ua lub luag haujlwm zoo hauv kev txhawb nqa kev tsim khoom thiab kev txhim kho ntawm kev taw qhia silicon steel.

Nyob rau hauv xyoo tas los no, loj oriented silicon steel ntau lawm cov nroj tsuag nyob rau hauv lub ntiaj teb no tau txuas tseem ceeb heev rau kev txhim kho cov txheej txheem casting billet cua sov. Cov txheej txheem kub-kub rauv cua sov txheej txheem tau hloov los ntawm cov cua sov taug kev zoo tib yam + lub tshuab hluav taws xob ntau zaus induction rauv high-temperature luv luv cua sov. Xyoo 1996, Nippon Steel's Bapan Plant tau siv 1150 ~ 1250 degree qis kub casting billet cua sov txheej txheem los tsim Hi-B steel; Russia tau siv 1250 ~ 1280 degree slab cua sov txheej txheem los tsim CGO hlau. Hauv kev lag luam hlau thiab hlau niaj hnub no, uas tau nce zuj zus mus rau kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab txo tus nqi, cov txheej txheem qis-kub casting billet cua sov yuav muaj tseeb tau siv dav hauv kev tsim cov roj silicon steel.

Oriented silicon hlauhigh kub casting billet cua sov tshuab

Nyob rau hauv cov txheej txheem ntau lawm ntawm oriented silicon steel, nyob rau hauv thiaj li yuav tau txais ib tug Goss zoo nkauj los ntawm theem nrab recrystallization, cov nplua thiab dispersed precipitated theem hais los yog grain ciam ciam cais cov ntsiab lus uas yuav zoo inhibit qhov kev loj hlob ntawm cov thawj nplej yog hu ua inhibitors. Cov teebmeem kev sib deev. Txhawm rau kom muaj cov khoom sib nqus ruaj khov, cov ntxhib MnS cov khoom ua los ntawm cov txheej txheem casting thiab condensation yuav tsum tau yaj tag. Yog li ntawd, cov cua kub ntawm CGO steel casting billet nrog MnS raws li inhibitor yog teev raws li 1350-1370 degree , thiab cov cua kub ntawm Hi-B steel nrog MnS + AlN li inhibitor yog siab dua CGO hlau vim ntau dua manganese thiab carbon. cov ntsiab lus tshaj CGO steel. Cov cua kub kub tau teev tseg raws li 1380-1400 degree . Thaum lub cam khwb cia slab yog rhuab ntawm qhov kub siab tshaj 1350 degree, lub coarse MnS hais yog kiag li yaj thiab ces precipitated nyob rau hauv ib tug finely dispersed lub xeev thaum lub sij hawm kub dov txheej txheem. Qhov zoo tshaj plaws dispersed AlN hais feem ntau yog precipitated thaum lub sij hawm normalization txheej txheem ntawm cov ntawv kub dov. Qhov tsim nyog thawj zaug loj tom qab decarburization annealing rau CGO steel yog 15-25 μm, thiab rau Hi-B steel yog 10-15 μm. Qhov no tuaj yeem ua kom ntseeg tau tias qhov thib ob recrystallization tiav thiab cov khoom sib nqus siab tuaj yeem tau txais. Txawm li cas los xij, cua sov ntawm high-temperature cam khwb cia slab muaj qhov tsis zoo hauv qab no:

Tus nqi tawm los yog txo: qhov kub poob tau nce (3.5%-6%) vim yog oxidation ntau dhau ntawm cov cam khwb cia, uas yog li 4 npaug siab dua cov cua kub kub poob ntawm cov pa roj carbon zoo tib yam;

(1) Slag tsub zuj zuj nyob rau hauv qab ntawm lub cub tawg thiab cov zis tsawg: lub melting point ntawm lub tsim SiO2 oxide txheej tsuas yog 1205 degree, yog li cov oxide txheej melts nyob rau hauv lub high-kub cua sov rauv thiab ntws mus rau hauv qab ntawm lub cub tawg. Qhov nruab nrab cua sov ntawm 4 000 billets yuav tsum tau ntxuav cov slag thiab cua sov. Txog 8,000 yuav raug kho dua tshiab, thiab cov kev ua haujlwm rau kev kho lub cub tawg yog qhov tsis zoo;

(2) Lub zog pov tseg: Feem ntau yog vim qhov kub thiab txias, kev siv roj ntau ntxiv;

(3) Lub neej ua kom luv luv: Lub hauv paus refractory nyob rau hauv qhov chaw kub kub ntawm lub qhov cub cua sov uas tau raug kub thiab cua sov rau lub sijhawm ntev yuav raug tev tawm thiab lub neej yuav luv, uas tsis yog tsuas yog txhim kho kev txij nkawm. cov nqi, tab sis kuj txo cov nqi hluav taws xob ua haujlwm;

(4) Cov nqi tsim khoom siab: vim yog coarsening ntawm slab lis thiab oxidation ntawm ntug nplej ciam teb, cov kub dov sawb yog nquag mus rau ntug tawg, tus nqi tawm los yog txo, thiab cov nqi tsim khoom tsuas yog muaj zog;

(5) Ntau yam khoom nto tsis xws luag: tsis zoo tshem tawm oxide nplai nyob rau saum npoo ntawm kub dov strip steel, uas cuam tshuam rau lub cev zoo ntawm cov khoom;

(6) Cov khoom sib nqus tsis ruaj khov: aluminium, silicon thiab carbon nyob rau hauv qhov chaw ntawm cov cam khwb cia slab yog ua ke nrog oxidation, txo cov ntsiab lus, ua rau cov khoom sib nqus tsis sib xws ntawm cov khoom thiab kev puas tsuaj ntawm cov yeeb yaj kiab insulating;

(7) Tsis tas li ntawd, vim yog coarsening ntawm slab nplej, cov khoom yog nquag mus rau linear zoo siv lead ua tsis xws luag, uas cuam tshuam rau cov hlau nplaum stability.

Tam sim no, cov txheej txheem dav dav rau cov cua kub kub cam khwb cia slabs yog raws li nram no: cov cam khwb cia slabs yog thawj preheated nyob rau hauv ib tug zoo tib yam cua sov rauv ntawm 1200 degree, thiab ces nkag mus rau hauv ib tug high-frequency induction rauv rau high-temperature thiab luv-lub sij hawm. cua sov. Cov txheej txheem no siv lub zog tsawg dua li cov txheej txheem kub kub cua kub cua sov, lub tshuab ua kom sov lub cev muaj lub neej ua haujlwm ntev, txo qis slag tsub zuj zuj thiab kub dov ntug tawg, thiab txo cov nqi tsim khoom.

CRGO hlau