Kub-rolled coils yog tsim los ntawm slabs (feem ntau tsis tu ncua slabs) ua raw khoom; Tom qab tau rhuab nyob rau hauv ib tug reheating rauv (los yog homogenized nyob rau hauv ib tug soaking qhov), cov khoom yog dov mus rau hauv steel sawb los ntawm ib tug roughing zeb tsheb ciav hlau thiab ib tug xov zeb tsheb ciav hlau. Raws li cov hlau kub kub tawm ntawm qhov kawg sawv ntawm lub tshuab tiav, nws dhau los ntawm laminar txias rau qhov kub thiab txias ua ntej yuav coiled rau hauv kub - dov kauj los ntawm downcoiler.
Tam sim no, muaj ob hom kev kub kub- dov "txuag dov" thev naus laus zis. Thawj koom nrog cov kab sib txuas ua ke kub txuas ntxiv, qhov nruab nrab slabs - nyuam qhuav dhau los ntawm cov roughing zeb- tau sib koom ua ke ntawm cov theem roughing thiab ua tiav kom ua tiav qhov kawg dov thaum lub sijhawm ua tiav. Qhov thib ob hom enables qhov ncaj dov ntawm nruam nruam slabs; qhov no suav nrog ESP (Endless Strip Production) nruam casting thiab dov txheej txheem, nrog rau nyias -strip casting thiab dov technologies. Piv nrog rau cov tsoos nyias nyias-slab nruam casting thiab dov txheej txheem, ESP txoj kab uas tsis muaj qhov kawg ua rau txo qis zog thiab dej siv; Nyob ntawm qhov kawg ntawm cov khoom tshwj xeeb, kev siv hluav taws xob tuaj yeem raug txo los ntawm 50% mus rau 70%, thaum kev siv dej tuaj yeem txiav los ntawm 60% mus rau 80%.
Nyias-strip casting thiab dov thev naus laus zis sawv cev rau kev siv thev naus laus zis hauv kev lag luam metallurgy thiab cov ntaub ntawv tshawb fawb hauv xyoo pua 21st. Nws koom ua ke cov txheej txheem xws li nruam casting, dov, thiab txawm tias kev kho cua sov rau hauv ib qho kev sib koom ua ke, yog li tshem tawm cov kauj ruam rov ua dua ib txwm xav tau ntawm cov txheej txheem nruam casting thiab kub dov. Cov txheej txheem Castrip, piv txwv li, siv ob lub txee- tig casting yob; molten steel poured nruab nrab ntawm cov rolls solidifies tawm tsam lawv qhov chaw, sib sau ua ob cais khoom plhaub uas yog ces nias ua ke los ntawm cov yob los tsim ib tug tsis tu ncua solidified steel sawb. Piv nrog rau cov txheej txheem ib txwm muaj, txoj kev Castrip ua tiav kev txuag hluav taws xob ntawm 80% mus rau 90% thaum tib lub sijhawm txo cov pa hluav taws xob hauv tsev cog khoom los ntawm 70% mus rau 80%.