hlau ua

Kev txhais ntawm steelmaking: tshem tawm impurities nyob rau hauv npua hlau thiab seem los ntawm oxidation thiab ntxiv ib tug tsim nyog tus nqi ntawm alloy ntsiab ua rau nws ib tug hlau nrog siab zog, toughness los yog lwm yam khoom tshwj xeeb.Cov txheej txheem no hu ua "steelmaking".
Rau hlau carbon alloys nrog cov ntsiab lus carbon ≤ 2.0%, qhov tseem ceeb ntawm 2.0% C hauv cov hlau carbon theem daim duab.Kub kub: austenite, kub ua haujlwm zoo;Qhov kub thiab txias: feem ntau yog pearlite.
Vim li cas steelmaking: npua hlau tsis tuaj yeem siv dav.Cov ntsiab lus carbon siab: tsis muaj austenite ntawm qhov kub thiab txias;Kev ua haujlwm tsis zoo: tawv thiab nkig, tsis zoo toughness, tsis zoo vuam kev ua haujlwm, tsis tuaj yeem ua haujlwm;Muaj ntau yam impurities: cov ntsiab lus siab ntawm S, P thiab suav nrog.
Cov ntsiab lus hauv cov hlau: tsib lub ntsiab lus: C, Mn, s, P thiab Si (yuav tsum tau).Lwm cov ntsiab lus: V, Cr, Ni, Ti, Cu, thiab lwm yam (raws li qib steel).Yog vim li cas: ① kev txwv: s thiab P tsis tuaj yeem raug tshem tawm tag nrho;② Raw khoom residue: Scrap residue Cu, Zn;③ Txhim kho cov khoom: Mn txhim kho lub zog thiab Al refines cov nplej.Cov ntsiab lus tseem ceeb: ① lub teb chaws tus qauv yuav tsum muaj: GB;② Enterprise tus qauv: txiav txim los ntawm lub tuam txhab;③ Lwm cov qauv hauv tebchaws: swrch82b (Nyiv).
Lub luag haujlwm tseem ceeb ntawm steelmaking: lub luag haujlwm tseem ceeb ntawm steelmaking yog ua kom cov hlau molten thiab seem hlau rau hauv cov hlau uas xav tau cov tshuaj muaj pes tsawg leeg, thiab ua kom nws muaj qee yam physicochemical thiab mechanical zog.Lub luag haujlwm tseem ceeb yog sau ua "plaub tshem tawm, ob qhov kev tshem tawm thiab ob qhov kev hloov kho".
4. Decarbonization, desulfurization, dephosphorization thiab deoxidation;
Ob qhov kev tshem tawm: tshem tawm cov pa phem thiab impurities;
Ob qho kev hloov kho: kho cov kua hlau kub thiab cov hlau alloy muaj pes tsawg leeg.