Hlau phaj yog ib qho tseem ceeb ntawm cov khoom siv hauv kev lag luam niaj hnub no. Nws txoj kev tsim khoom thiab thev naus laus zis cuam tshuam ncaj qha rau nws qhov kev ua tau zoo thiab kev siv ntau yam. Cov txheej txheem steel phaj tsim muaj ntau yam tseem ceeb, suav nrog kev npaj cov khoom siv raw, smelting, dov, thiab tom qab- ua. Txhua kauj ruam yuav tsum muaj kev tswj xyuas nruj kom ntseeg tau qhov zoo ntawm cov khoom kawg.
Raw Materials thiab Smelting
Kev tsim steel phaj pib nrog kev pom zoo ua ke ntawm siab - zoo hlau ore, seem steel, thiab alloying ntsiab. Ua ntej, cov ntaub ntawv raw yog smelted ntawm qhov kub thiab txias nyob rau hauv ib qho hluav taws xob arc rauv los yog converter. Redox cov tshuaj tiv thaiv tshem tawm impurities thiab kho cov ntsiab lus carbon thiab lwm yam alloying Cheebtsam. Niaj hnub nimno steel mills feem ntau siv cov pa hluav taws xob yooj yim (LD) lossis hluav taws xob arc furnaces (EAF) txhawm rau txhim kho kev ua haujlwm smelting thiab txo lub zog noj. Kev tswj hwm ntawm qhov kub thiab txias thiab tshuaj muaj pes tsawg leeg yog qhov tseem ceeb thaum lub sij hawm smelting txheej txheem kom ntseeg tau tias cov hlau molten muaj cov khoom siv zoo tagnrho thiab kev ua haujlwm.
Nruam Casting thiab Rolling
Lub molten hlau yog nrum rau hauv slabs nyob rau hauv ib tug nruam casting tshuab. Cov txheej txheem no ncaj qha cuam tshuam rau sab hauv microstructure uniformity ntawm steel phaj. Cov slabs ces nkag mus rau hauv lub qhov cub cua sov rau soaking kev kho mob los txhim kho lawv cov plasticity thiab pab txhawb tom qab dov. Rolling yog cov txheej txheem tseem ceeb hauv steel phaj tsim thiab muab faib ua ob txoj hauv kev: kub dov thiab txias dov. Kub- dov steel phaj yog dov rau ntawm qhov kub thiab txias, ua rau cov khoom zoo heev thiab tsim nyog rau cov khoom siv. Txias- dov steel daim hlau, ntawm qhov tod tes, yog ua tiav ntawm chav tsev kub, ua rau lub ntsej muag du thiab zoo dua qhov tseeb. Lawv feem ntau siv rau hauv daim ntawv thov xws li tsheb thiab khoom siv hauv tsev.
Ncej -Kev Ua Haujlwm thiab Kev Tswj Xyuas Zoo
Tom qab dov, steel phaj tau txias, leveling, thiab kho deg. Kev kho cua sov (xws li normalizing thiab quenching) ntxiv optimizes lub zog thiab toughness ntawm cov hlau daim hlau. Tsis tas li ntawd, tsis yog- kev sim ua kom puas (xws li kev kuaj ultrasonic) thiab kev kuaj xyuas cov cuab yeej ua kom ntseeg tau tias cov hlau phaj ua tau raws li cov qauv kev lag luam. Niaj hnub nimno steel phaj kev tsim khoom tseem ceeb tseem ceeb rau kev tiv thaiv ib puag ncig thiab kev siv hluav taws xob, kev siv cov khoom siv hluav taws xob zoo tshaj plaws thiab kev siv hluav taws xob txo qis kom txo cov pa roj carbon emissions thaum lub sijhawm tsim khoom.
Nyob rau hauv cov ntsiab lus, steel phaj manufacturing txoj kev integrates multidisciplinary kev txawj ntse los ntawm metallurgy, mechanics, thiab cov ntaub ntawv science. Cov txheej txheem optimization yuav txuas ntxiv mus rau kev txhim kho ntawm siab -kev tsim khoom kawg.
