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近年来国内各钢铁企业,为了提高经济效益,在提高钢锭成坯率方面做了许多工作,取得显著成绩。在技术上主要采取以下几项措施: 1.大力推广绝热板、发热剂和保护渣三位一体的镇静钢浇铸技术。①绝热板自1975年起用,现在全国各钢厂都在推广,绝热板的容重为0.9～1.05克/厘米~3。②发热剂于1979年起用,目前主要是全铝型的,也有少量用硅铝型的。为防止粉尘,已由粉状发展到粒状。发热剂的着火时间一般控制在6～7分钟,燃烧时间15分钟左右,最高燃烧温度在1400～
In recent years, domestic steel companies, in order to improve economic efficiency, improve ingot ingot ingot rate done a lot of work and achieved remarkable results. Technically take the following measures: 1. To vigorously promote insulation board, heat agent and mold flux Trinity of steel casting technology. ① insulation panels since 1975, now all the steel mills in the country are promoting the insulation capacity of 0.9 ~ 1.05 g / cm ~ 3. ② fever agent used in 1979, the current is mainly all-aluminum, but also a small amount of silicon-aluminum type. To prevent dust, powder has been developed to granular. Fever heating time is generally controlled at 6 to 7 minutes, burning time of about 15 minutes, the maximum combustion temperature of 1400 ~