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日本厚板生产的概况日本厚板的生产已有七十年的历史,经历了1955年以来的技术设备引进期和1965年以来的本国自行研制期。目前已超越了欧美先进国家的技术水平。根据1972年的统计资料,日本1971年厚板的生产量占全世界主要钢铁生产国的首位(见图1),厚板在轧材中所占的比例也仅次于西德(见图2)。图3～6表示日本1972年～1972年厚板产量、轧制效率、劳动生产率和厚板合格率的增长情况。
Overview of Japanese plate production Japanese plate production has been seventy years of history, experienced since 1955 the introduction of technology and equipment since 1965 and its own development period. Has now surpassed the technical level of advanced countries in Europe and the United States. According to 1972 statistics, the production of plate in Japan in 1971 accounted for the first place in the major steel producing countries in the world (see Figure 1), and the proportion of heavy plate in rolled steel is second only to that of West Germany (see Figure 2 ). Figures 3 to 6 show the growth of plate production, rolling efficiency, labor productivity and plate passing rate in Japan from 1972 to 1972.