1. Hlau ore mining thiab ua:
Muaj ob hom hematite thiab magnetite uas muaj kev ua haujlwm zoo dua thiab siv tus nqi.
2. Coal mining thiab coking:
Tam sim no, ntau dua 95% ntawm lub ntiaj teb steel ntau lawm tseem siv cov coke hlau ua txoj kev tsim los ntawm British Darby 300 xyoo dhau los.Yog li ntawd, coke yuav tsum tau ua hlau, uas yog siv los ua roj.Nyob rau tib lub sij hawm, coke kuj yog ib tug txo tus neeg sawv cev.Tshem tawm cov hlau los ntawm hlau oxide.
Coke tsis yog cov ntxhia, tab sis yuav tsum tau "ua kom zoo" los ntawm kev sib xyaw tshwj xeeb ntawm cov thee.Qhov sib piv dav dav yog 25-30% roj thee thiab 30-35% ntawm coking thee, thiab tom qab ntawd muab tso rau hauv qhov cub coke thiab carbonized rau 12-24 teev., sib sau nyuaj thiab ntxeem tau coke.
3. Blast furnace ironmaking:
Blast furnace ironmaking yog yaj hlau ore thiab roj (coke muaj ob lub luag haujlwm, ib qho ua roj, lwm yam ua tus neeg ua haujlwm txo qis), limestone, thiab lwm yam., hauv qhov cub tawg, kom nws nkag mus rau qhov txo qis ntawm qhov kub thiab txias. thiab raug txo los ntawm hlau oxide.Cov zis yog qhov pib "npua hlau" feem ntau yog tsim los ntawm cov hlau thiab muaj qee cov carbon, uas yog, molten hlau.
4. Ua hlau ua hlau:
Qhov sib txawv ntawm cov khoom ntawm hlau thiab hlau yog cov ntsiab lus carbon, thiab cov ntsiab lus carbon tsawg dua 2% yog qhov tiag "steel".Dab tsi yog feem ntau hu ua "steelmaking" yog decarburization ntawm npua hlau thaum lub sij hawm kub kub smelting txheej txheem, tig hlau mus rau hauv hlau.Feem ntau siv steelmaking khoom yog lub converter lossis hluav taws xob rauv taws.
5. Casting khoom:
Tam sim no, ntxiv rau kev tsim cov hlau tshwj xeeb thiab cov hlau loj loj, cov khoom me me ntawm cov cam khwb cia hlau yog xav tau rau kev ua haujlwm forging.Kev loj hlob ntawm cov hlau zoo tib yam hauv tsev thiab txawv teb chaws tau tso tseg cov txheej txheem qub ntawm casting steel ingots - billeting - dov, thiab feem ntau ntawm lawv siv Cov txheej txheem ntawm casting molten steel rau hauv billets thiab ces dov lawv hu ua "nruam casting". .
Yog tias koj tsis tos kom lub steel billet txias, tsis txhob tsaws ntawm txoj kev, thiab xa ncaj qha mus rau lub dov zeb, koj tuaj yeem ua cov khoom siv hlau uas yuav tsum tau "hauv ib qhov hluav taws kub".Yog hais tias lub billet txias ib nrab thiab khaws cia rau hauv av, billet tuaj yeem dhau los ua khoom muag hauv khw.
6. Billet dov rau hauv cov khoom:
Nyob rau hauv lub dov ntawm lub dov zeb, lub billet hloov los ntawm ntxhib mus rau nplua, tau los ze zog mus rau lub kawg txoj kab uas hla ntawm cov khoom, thiab xa mus rau lub bar txias txaj kom txias.Feem ntau ntawm cov tuav yog siv los ua cov khoom siv kho tshuab thiab lwm yam.
Yog tias cov qauv rolls siv rau ntawm qhov kawg ntawm qhov kawg zeb, nws muaj peev xwm tsim tau rebar, cov khoom siv hu ua "rebar".
Cov lus qhia saum toj no hais txog cov txheej txheem tsim khoom ntawm rebar, Kuv vam tias nws yuav pab tau rau txhua tus.
Post lub sij hawm: Lub Xya hli ntuj-22-2022