十几年来,由于平炉氧气炼钢的迅速发展,铸锭整模能力日益成为薄弱环节。传统的上小下大模浇注沸腾钢,上大下小模(戴保温帽)浇注镇静钢,且不同规格的钢轨还采用了不同的模型,种类繁多,工艺复杂,管理困难,影响很大。近年来,英国、西德、瑞典、捷克、罗马尼亚、苏联和日本等在上小下大敝口模中挂上绝热板浇注镇静钢,不挂绝热板 More than a decade, due to the rapid development of hearth oxygen steelmaking, ingot moldability is increasingly becoming the weakest link. The traditional small and large mold pouring boiling steel, the small mold (wearing thermal cap) pouring cast steel, and different specifications of the rail also uses a different model, a wide range of complex technology, management is difficult, a great influence. In recent years, the United Kingdom, West Germany, Sweden, Czech Republic, Romania, the Soviet Union and Japan in the small big under the large-scale model hung hanging insulation mortar, not hanging hot plate