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大连起重机器厂为提高钢水利用率,在学习抚顺、沈阳等地经验的基础上,做了很多试验,研究成功了石墨渣发热冒口。自1978年以来,陆续在生产中推广应用,取得了较显著效果。据该厂统计,采用石墨渣发热剂冒口后,平均工艺出品率提高8～11％,以平均9.5％计算,每浇注一吨钢水,可以节约钢水95公斤。例如:浇铸一个车轮,毛重470公斤,原工艺冒口总重564公斤,出品率45.5％,现采用
Dalian Lifting Machinery Factory to improve the utilization of molten steel, Fushun, Shenyang and other places to learn from the experience based on a lot of experiments done to study the success of the slag fever riser. Since 1978, one after another in the production of popularization and application, has achieved remarkable results. According to the factory statistics, the use of graphite slag heating agent riser, the average craft yield increased by 8 to 11%, with an average of 9.5% calculation, pouring a ton of molten steel, you can save 95 kilograms of molten steel. For example: casting a wheel, gross weight 470 kilograms, the original process riser total weight 564 kilograms, 45.5% production rate, is the use of