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一、前言我国使用绝热板代替保温帽浇铸镇静钢的研究,始于70年代,现已普遍推广应用。绝热板是一种低导热轻质耐火材料,能改善钢锭头部的绝热保温作用,是减少缩孔深度和钢锭切头,从而提高钢成材率的有效措施之一。我厂自1980年3月起首先在平炉车间扁钢锭模上采用绝热板浇铸工艺,并于1982年在全厂各炼钢车间扁模上推广应用,现在每年使用绝热板浇铸钢锭75万余吨。但在生产
I. Introduction China’s use of insulation panels instead of insulation cap casting steel research, began in the 70’s, is now widely used. Insulation board is a kind of low thermal conductivity light refractory material, which can improve the thermal insulation of the ingot head, which is one of the effective measures to reduce the depth of shrinkage cavity and cut the ingot, so as to improve the steel forming rate. Since March 1980, our factory first used the insulation board casting process on the flat steel ingot mold in the hearth furnace workshop. In 1982, it spread and applied the flat molds of all the steelmaking workshops in the whole plant. Now, the annual output of 750,000 tons . But in production