宣钢小方坯连铸机拉速演变的探讨

宣钢从1993年成立连铸机以来,随着钢需求的增加,连铸机的拉速从1.0m/min涨到2.0m/min,进而又涨到3.0m/min以上,宣钢的产量也是一路飙升。但随着钢铁产量的过剩,用户对钢的质量要求越来越苛刻,宣钢铸坯的缺陷也越显凸显,宣钢钢轧厂果断采取了低过热度的恒速拉钢生产模式,提高了铸坯的质量,也减少了各种事故的发生率,使铸坯的质量稳步提高。

ofXuanhualronandseeelCompanysincefoundedin 1993ffomthecondnuouscastingmachine, withthe risingdemalld forsteel, casting speed from 1 m/min up to2 m/rain, and then rose tO more than 3 m/rain, the yield is also soared in Xuan h t a I ron and steel company. Butwith tbe steel pro- ducti0n o vercapacity, the quality of the userofsteel are becomingmore demanding, defects in castingbillet is m ore promin en t, steel rollin g plant o f＇Xuan- hua Iron and steel company has takenlowsuperheat of constant speed castingofsteel production, improve the quality ofcasdngbiltet, but also reduce the accident rate, the quality ofcastingthesteadyimprovement o fbillet.