Mng'alu zopingasa zidzakhudza mtengo wazinthu zomalizidwa mutangogubuduza.Wonjezerani nthawi yoyeretsa billet, zonse zovulaza kwambiri.Kutentha kwa slab ndi brittle zone ya 700-900 ℃.Chifukwa chomwe ming'alu yapansi ndi 1050-1100 ℃, ming'alu yopingasa pamwamba pazifukwa ndi billet pamwamba ndi gawo lalikulu kuwongola kupsinjika.Niobium nitride m'malire ambewu ya austenite amachepetsa mphamvu yomangirira, kugwa kwa malire ambewu.Panthawi imeneyi, chigawo chokhotakhota cha slab mphambano cha arc chimakhala chosauka, zomwe zimapangitsa kuti pakhale ming'alu yapansi.Ming'alu yowongoka ndi kapangidwe ka mankhwala, kutentha kwamadzi ozizira kwa nkhungu, zida za nkhungu, kapangidwe kake ka slag, makina opitilira aponyedwe olondola achiwiri ozizirira okhudzana.Njira zopewera:
1. Control zitsulo zikuchokera.Yesetsani kupewa wC ndi 0,12% -0,16% D36 zitsulo za carbon dioxide mu smelting process control njira malinga ndi malire apamwamba.Angathe kuchepetsa ming'alu.Peritectic reaction zone.
2. Control crystallization kutentha zonse nkhungu kutentha, nkhungu kutentha kusintha njira bwino ndi kuonjezera nkhungu yozizira madzi preheating chipangizo.Kuletsa kuchitika kwa ming'alu pamene nyengo ikusintha.Angagwiritsidwenso ntchito pambuyo aliyense kusiya kuthira ndi kuthira nthawi si lotseguka pamene madzi kutentha ndi m'munsimu 20 ℃ nkhungu nkhungu kuzirala madzi, kuonetsetsa kuti kutentha kwa kuponyera nkhungu mafashoni.
3. Sinthani magawo a crystallization process kusintha kuchuluka kwa madzi kukula kwa nkhungu, malinga ndi makulidwe osiyanasiyana amkuwa.Ndi kusintha kuchuluka kwa madzi kuonetsetsa kuti magawo osiyanasiyana nkhungu kuzirala kwambiri.
4. Kupititsa patsogolo kuzirala kwachiwiri, kuwongolera kutentha kwa chigawo chowongoka, mwa kukonzanso dongosolo lachiwiri lozizira.Pewani kuwongola kwa brittle zone billet, kumatha kuchepetsa mwayi wa ming'alu ya slab.
5. Strand by strand maonekedwe kuyeretsa ndi kuchotsa silab scarfing ngodya, ndi njira yabwino kuyeretsa slab billet komaliza chitsimikizo khalidwe.Titha kukonza mtundu womaliza wa slab.