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一、问题的提出扁钢型材规格繁多,品种复杂。它是国防军工和四化建设必不可少的重要材料。三八轧机年产扁钢总量达八千多吨。由于用户的不同需要,对所生产的扁钢宽度和厚度尺寸,都在较广的范围内变化多端。有的还对扁钢的角度、侧壁弧度、平面凹度等有不同的要求。近年来三八轧机所生产的扁钢规格有三百五十余种。这些都给扁钢压下规程的确定及轧制过程的调整,带来了一系列困难。
First, the issue put forward Flat steel profiles of various specifications, varieties of complex. It is an indispensable and important material for the national defense industry and the four modernizations. 38 rolling mill annual output of flat steel amounted to more than 8,000 tons. Due to the different needs of users, the width and thickness of the flat steel produced are varied in a wide range. Some also flat steel angle, curvature of the sidewall, flatness and other have different requirements. In recent years, three hundred eight mill rolled flat steel specifications have more than 350 kinds. All of these have given rise to a series of difficulties in the determination of the flat steel reduction schedule and the adjustment of the rolling process.