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Cov txheej txheem ntau lawm ntawm kub-kuav los tiagsteel kaujyog qhov txuas tseem ceeb hauv kev tsim steel hlau. Nws tsuas yog tsim cov hlau billet rau hauv lub phaj uas xav tau los ntawm kev kub kub dov. Cov hauv qab no yog nws cov kauj ruam tseem ceeb:

Kev npaj raw khoom
Nruam nrum los yog tawg slabs yog siv los ua raw khoom, feem ntau nrog ib tug tuab ntawm 150-300 hli.
Lub slab nto yog ntxuav (piv txwv li, nplaim taws tu los yog kev sib tsoo tshuab) kom tshem tawm cov nplai thiab qhov tsis xws luag los xyuas kom meej qhov zoo.
Cua sov
Cov slab tau muab tso rau hauv qhov cub taug kev thiab ua kom sov rau 1100-1300 ° C kom ncav cuag qhov kub thiab txias thiab txhim kho plasticity.
Lub sij hawm cua sov thiab qhov kub tsis sib xws yog tswj kom tsis txhob overheating lossis underheating.
Roughing
Lub slab yog txo kom tuab ntawm 30-50 mm nyob rau hauv ib tug reversing roughing zeb (xws li, ib tug ob-los yog plaub-siab zeb) los tsim ib tug intermediate bar.
Tom qab txhua qhov dov dhau lawm, cov dej kub siab descaling tuaj yeem ua kom tshem tawm cov txheej oxide saum npoo.
Ua tiav
Qhov nruab nrab bar nkag mus rau hauv lub zeb tiav (feem ntau muaj rau los yog xya plaub-lossis rau-siab mills) qhov twg nws maj mam txo mus rau lub hom phiaj thickness (xws li, 1.2-25 hli) los ntawm kev nruam dov. Tsis Siv Neeg Gauge Control (AGC) thiab lub cev tswj tau siv los xyuas kom meej qhov tseeb thiab tiaj tus.
Thaum lub sij hawm dov txheej txheem, cov yob yuav tsum tau txias thiab lubrication los tiv thaiv thermal deformation thiab hnav.
Txias
Lub tshuab laminar txias yog siv los ua kom txias txias ntawm steel sawb los ntawm qhov kawg dov kub (kwv yees li 800 ° C) mus rau chav tsev kub los ntawm kev tswj cov dej ntim thiab cua txias (xws li, 30-50 ° C / thib ob).
Cov txheej txheem txias ncaj qha cuam tshuam rau microstructure (piv txwv li, qhov piv ntawm ferrite rau pearlite) thiab cov khoom siv ntawm cov hlau kauj.
Coiling
Lub steel sawb yog coiled rau hauv ib lub kauj siv pinch yob thiab ib tug coiler. Lub nro yog tswj ntawm 100-500 N / mm² kom ntseeg tau tias lub voj voog nruj thiab tsis muaj cov coils xoob.
Lub coiling kub yog feem ntau tswj ntawm 550-700 ° C kom ua tau zoo.
Tom qab ua tiav
Kev kho deg: Pickling kom tshem tawm oxide nplai, los yog txheej xws li galvanizing lossis aluminizing.
Annealing: Txhim kho cov khoom ductility (xws li, recrystallization annealing ua ntej txias dov). Flattening: Los ntawm dov nrog qhov txo qis, peb tshem tawm cov paib tawm thiab txhim kho qhov chaw tiav.
Kev soj ntsuam zoo thiab ntim khoom: Peb tshawb xyuas qhov ntev, cov khoom siv kho tshuab, thiab cov khoom zoo, thiab tom qab ntawd coil, nras, thiab sau cov khoom raws li cov neeg siv khoom tshwj xeeb.