Hlau yog ib qho tseem ceeb thiab dav siv cov khoom lag luam hauv ntau yam lag luam xws li tsheb, kev tsim kho thiab kev tsim khoom, thiab sawv cev rau kev tsim muaj peev xwm ntawm ib lub teb chaws lossis cheeb tsam.
Cov txheej txheem ntawm kev ua steel muaj ob peb kauj ruam. Cov hauv qab no yog ib qho kev piav qhia ntawm cov txheej txheem tsim khoom ib txwm:
Cov khoom siv raw: Cov khoom siv tseem ceeb siv hauv kev tsim cov hlau yog hlau ore thiab coking thee, thiab lwm yam. Ces lawv muab smelted rau hauv npua hlau nyob rau hauv lub qhov cub ua hlau; nyob rau hauv cov kauj ruam tom ntej, npua hlau yog siv los ua raw khoom thiab smelted rau hauv steel nyob rau hauv txawv steel-ua rauv; cov hlau yog cam khwb cia rau hauv ingots los yog nruam casting slabs, thiab ces xa mus rau dov mills rau dov los yog forging, thiab thaum kawg yuav usable steel nyob rau hauv ntau yam duab.
Ntxuav thiab npaj cov hlau:
Ua ntej cov hlau txuas ntxiv, nws mus dhau lub sijhawm tu thiab npaj kom tshem tawm cov impurities saum npoo xws li av, xeb lossis roj. Qhov no yog ua los xyuas kom meej qhov chaw huv si rau kev kho mob tom ntej.
Pickling:
Thaum lub sij hawm pickling, cov hlau yog immersed nyob rau hauv ib tug acid da dej kom tshem tawm tej impurities seem, nplai thiab oxides. Hydrochloric acid feem ntau yog siv rau pickling.
Txias Rolling:
Yog tias cov hlau siv yog kub dov, nws tuaj yeem txias dov kom txo nws cov tuab thiab txhim kho nws cov khoom siv kho tshuab. Txias dov yuav hla cov hlau los ntawm cov yob ntawm chav tsev kub, compressing thiab ncab cov khoom.
Annealing:
Tom qab txias dov, cov hlau tuaj yeem raug muab tshem tawm, uas cov khoom siv tau rhuab mus rau qhov kub thiab txias thiab maj mam txias. Annealing pab txo cov kev ntxhov siab sab hauv thiab ua kom cov ductility thiab formability ntawm cov hlau.
Coil txoj kev:
Cov txheej txheem steel yog tam sim no nyob rau hauv daim ntawv los yog sawb daim ntawv. Txhawm rau tsim cov hlau coils, cov nplooj ntawv steel raug mob rau hauv cov ntawv kaw ntom ntom. Qhov no feem ntau yog ua tiav siv lub tshuab hu ua slitter lossis coiler.
Kev Tswj Xyuas Zoo:
Thoob plaws hauv cov txheej txheem tsim khoom, kev tswj xyuas zoo yog ua los xyuas kom meej tias lub kauj ua tau raws li cov qauv tsim nyog rau thickness, nto tiav, thiab lwm yam khoom.
Ua tiav:
Raws li qhov xav tau ntawm daim ntawv thov, coils yuav muaj kev kho deg ntxiv lossis txheej txheej. Piv txwv li, galvanizing, galvalume, yog ib qho txheej txheem uas ib txheej ntawm zinc siv los tiv thaiv hlau los ntawm corrosion.
Ntim thiab Cia:
Thaum lub coil ua tau raws li cov qauv zoo thiab kev ua tiav, nws tau ntim thiab npaj rau kev xa khoom. Steel coils rau export yuav siv txheem export ntim kom tsis txhob muaj kev pheej hmoo thaum thauj.
Nws yog ib qho tsim nyog sau cia tias qhov tshwj xeeb ntawm cov txheej txheem coil tsim yuav txawv nyob ntawm seb hom steel siv, cov lus qhia tshwj xeeb uas yuav tsum tau ua, thiab lub peev xwm ntawm cov hlau zeb lossis cov chaw ua haujlwm. Advanced technology thiab automation kuj tau muab tso rau hauv ntau cov txheej txheem steel niaj hnub los txhim kho kev ua haujlwm thiab cov khoom zoo.
