Cov txheej txheem tsim khoom rau txias-rolled strip steel feem ntau yog tswj kev npaj billet, pickling, txias dov, annealing, thiab tiav.
Kev npaj Billet yuav tsum muaj cov tshuaj muaj pes tsawg leeg, qhov ntev ntev rau qhov dav thiab tuab (tshwj xeeb yog "peb-point sib txawv" thiab "intra-strip variation"), thiab camber tag nrho ua tau raws li qhov yuav tsum tau ua. Tsis tas li ntawd, qhov saum npoo yuav tsum du thiab tsis muaj qhov tsis xws luag xws li tawg, folds, laminations, pores, thiab tsis yog -cov khoom siv hlau.
Ua ntej pickling, steel sawb yuav tsum ncaj thiab pob tw -welded los pab txhawb kev ua haujlwm tas li. Lub hom phiaj tseem ceeb ntawm pickling yog tshem tawm hlau oxide nplai. Thaum lub sij hawm pickling txheej txheem, kev tswj nruj yuav tsum tau tswj xyuas qhov concentration thiab kub ntawm cov kua qaub, nrog rau cov ntsiab lus ntawm ferrous ntsev nyob rau hauv cov tshuaj.
Txhawm rau tswj cov tuab thiab sawb zoo, kev hloov kho yog ua rau kev txo qis, dov ceev, strip nro, thiab yob profile. Thickness feem ntau yog tswj los ntawm Tsis Siv Neeg Gauge Control (AGC), thaum lub strip zoo yog feem ntau tswj los ntawm kev kho cov yob profile -tshwj xeeb los ntawm yob crowning thiab crown them nyiaj ntsuas -siv technologies xws li HC (Hydraulic Crown) los yog CVC (Nruam Variable Crown) rolls
Annealing yog categorized rau hauv nruab nrab annealing thiab zaum kawg annealing. Intermediate annealing pab txhawm rau txo kev ua haujlwm nyuaj, qhov kawg annealing yog ua kom ua tiav qhov xav tau microstructure thiab txhua yam khoom. Annealing furnaces feem ntau poob rau hauv ob pawg: nruam annealing furnaces thiab tswb -hom annealing furnaces. Nyob rau hauv tswb- hom furnaces, cov txheej txheem annealing yuav tsum tau tswj qhov sib piv ntawm cov roj tiv thaiv hauv lub qhov cub, nrog rau lub sijhawm cua sov thiab txias; nyob rau hauv tas li furnaces, tus txheej txheem yuav tsum tau tswj kub, ceev, lub sij hawm, thiab cua nyob rau hauv nruj raws li ib tug tshwj xeeb annealing nkhaus. Kev tswj qhov nro ntawm cov hlua hlau nyob rau hauv lub cub tawg yuav pab xyuas kom meej cov kab nrib pleb zoo, thaum tswj cov yas ntawm lub cub tawg rolls tiv thaiv cov sawb los ntawm drifting tom qab.
Kev ua tiav tiav suav nrog qib qib, shearing, oiling, thiab ntim. Leveling pab txhim kho txoj hlua khi, ntxuav qhov chaw, thiab ua tiav cov khoom siv kho tshuab. Thaum lub sij hawm leveling txheej txheem, lub elongation ntawm steel sawb yuav tsum tau ua tib zoo tswj. Kev ua haujlwm shearing tsom feem ntau ntawm kev tswj qhov tseeb qhov tseeb thiab qhov zoo ntawm qhov chaw. Kev siv roj yuav tsum tau siv sib npaug, thiab ntim khoom yuav tsum ua raws li cov txheej txheem sau tseg kom yooj yim rau kev khaws cia, kev thauj mus los, thiab xa khoom.
