Kev nce qib ntawm stainless hlau smelting txheej txheem thev naus laus zis hauv Suav teb

Tam sim no, Tuam Tshoj yog lub teb chaws loj hauv kev tsim thiab siv cov hlau tsis muaj steel. Muaj ntau hom stainless hlau thiab cov txheej txheem smelting sib txawv tau tsim raws li kev siv cov hom hlau thiab cov khoom siv raw. Nyob rau hauv xyoo tas los no, Tuam Tshoj tus stainless hlau smelting tshuab tau tsim nyob rau hauv cov kev taw qhia ntawm kev txhim kho productivity, simplifying txheej txheem, txo cov nqi ntau lawm thiab txhim kho qhov zoo ntawm molten steel thiab tau txuas ntxiv optimized raw cov ntaub ntawv thiab cov txheej txheem khoom.

Cov ntsiab lus tau muab faib ua peb txheej txheem smelting
Tam sim no, cov txheej txheem smelting rau kev tsim cov hlau tsis muaj steel hauv ntiaj teb feem ntau yog muab faib ua ib-kauj ruam, ob-kauj ruam txoj kev thiab peb-kauj ruam txoj kev. Ntawm lawv, cov txheej txheem ob kauj ruam ntawm EAF + AOD (arc furnace + argon oxygen refining cub) suav txog li 70%, thiab cov txheej txheem peb-kauj ruam 20%. Raws li tsawg-phosphorus molten hlau yog dav siv nyob rau hauv stainless hlau ntau lawm, tus tshiab ib-kauj ruam stainless hlau smelting txheej txheem kuj tau saws los ntawm ntau thiab ntau stainless steel ntau lawm tuam txhab.

Ib-kauj ruam stainless hlau smelting txheej txheem
Cov txheej txheem ib-kauj ruam ntawm stainless hlau smelting thaum ntxov yog hais txog cov txheej txheem ntawm melting, decarburizing, txo thiab refining seem hlau nyob rau hauv lub cub hluav taws xob, thiab smelting tus nqi rau stainless hlau nyob rau hauv ib kauj ruam. Nrog rau kev txhim kho tas mus li ntawm cov txheej txheem refining, qhov no ib-kauj ruam smelting ntau lawm txheej txheem siv tsuas yog lub cub hluav taws xob rau smelt stainless hlau yog maj phased vim lub sij hawm ntev smelting voj voog, tsawg khiav hauj lwm tus nqi thiab siab ntau lawm nqi.
Los ntawm kev hloov kho tsis tu ncua ntawm kev siv cov hlau tsis muaj phosphorus lossis dephosphorized molten hlau es tsis txhob siv cov khoom seem, ib txheej txheem smelting tshiab tau tsim. Piv nrog ua ntej ib qho yog txo kev nqis peev. Lwm qhov yog txo cov nqi tsim khoom. Qhov thib peb yog los txo cov nqi ntawm cov khoom xyaw, txo lub zog noj thiab txhim kho cov purity ntawm molten steel. Nws yog tshwj xeeb tshaj yog kev lag luam rau smelting 400 series stainless hlau.

Ob-kauj ruam stainless hlau smelting txheej txheem
Tus neeg sawv cev txheej txheem ntawm ob kauj ruam stainless hlau yog EAF → AOD, EAF → VOD (arc furnace → VOD lub tshuab nqus tsev refining furnace). Lub peev xwm ntawm EAF → AOD txheej txheem tam sim no suav txog li 70% ntawm lub ntiaj teb stainless hlau muaj peev xwm. EAF rauv yog siv los yaj cov khoom siv hlau thiab cov khoom siv hlau los tsim cov hlau tsis muaj hlau ua ntej yaj. Stainless hlau pre-melts nkag mus rau AOD rauv rau smelt mus rau tsim nyog stainless hlau molten hlau.
Ob-kauj ruam stainless hlau smelting txheej txheem yog dav siv nyob rau hauv zus tau tej cov ntau series ntawm stainless steels. Nws qhov zoo muaj xws li hluav taws xob rauv taws tsis tas yuav muaj cov khoom siv siab, lub voj voog ntau lawm luv dua li cov txheej txheem ib-kauj ruam, thiab lawv muaj qhov yooj yim 95% ntawm cov hlau stainless ntau yam.

 

Peb-kauj ruam stainless hlau smelting txheej txheem
Cov txheej txheem yooj yim ntawm txoj kev peb-kauj ruam yog thawj refining rauv → ob-blown converter / AOD rauv → nqus refining ntaus ntawv. Txoj kev peb-kauj ruam yog ib txoj hauv kev siab heev rau smelting stainless hlau. Qhov zoo ntawm cov khoom yog zoo, thiab nws yog haum rau tshwj xeeb manufacturers thiab kuj rau stainless steel ntau lawm nyob rau hauv United Iron thiab Steel Enterprises.
Txoj kev peb-kauj ruam ntawm stainless hlau yog raws li ob-kauj ruam txoj kev, uas ntxiv ib kauj ruam ntawm kev sib sib zog nqus decarburization. Qhov zoo ntawm cov txheej txheem smelting. Qhov thib ib, kev faib ua haujlwm hauv txhua kauj ruam yog qhov tseeb, kev ua haujlwm nrawm nrawm, thiab kev ua haujlwm tau zoo. Qhov thib ob yog cov khoom zoo. Cov ntsiab lus ntawm nitrogen, hydrogen, oxygen thiab inclusions yog tsawg thiab ntau yam ntawm ntau yam yuav ua tau. Thib peb, molten hlau tuaj yeem siv tau thiab cov kev xav tau ntawm cov khoom siv raw tsis siab, thiab kev xaiv cov khoom siv raw yog hloov tau.

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Post lub sij hawm: Feb-23-2020