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。%of Xuanhua Iron and Steel Company since founded in 1993 from the continuous casting machine, with the rising demand for steel, casting speedfrom1m/minupto2m/min,andthenrosetomorethan3m/min,theyieldisalsosoaredinXuanhuaIronandsteelcompany.Butwiththesteelpro-ductionovercapacity,thequalityoftheuserofsteelarebecomingmoredemanding,defectsincastingbil etismoreprominent,steelrol ingplantofXuan-hua Iron and steel company has taken low superheat of constant speed casting of steel production, improve the quality of casting bil et, but also reduce the accidentrate,thequalityofcastingthesteadyimprovementofbil et.
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