在中厚板生产中,提高成材率是节省能源与资源、降低成本的重要手段,这已受到人们的普遍重视。最近十几年中,日本在这方面进行了许多开发性研究,并已取得十分显著的效果。日本各主要中厚板厂在1970年平均成材率仅为80.4％,到1980年则提高到91.5％~([1]),而世界其它国家主要中厚板厂在同年的成材率水平仅在80％左右~([2])。日本中厚板成材率这么迅速的提高, In the plate production, to improve the finished product rate is to save energy and resources, an important means of reducing costs, which has been widespread attention. In the recent past several decades, Japan has conducted many exploratory studies in this area and has achieved remarkable results. In Japan, the average plate-making rate of major plate-making plants in the 1970s was only 80.4%, up to 91.5% ~ ([1]) in 1980, while the percentage of the finished products of the major plate mills in other countries in the same year was only About 80% ~ ([2]). Japan plate rate of increase so rapidly,