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一、前言随着汽车工业的迅速发展,对锻造行业的装备和工艺水平提出了更高的要求,突出的问题就是以精化毛坯为核心的合理选择变形方式,提高材料利用率和锻件尺寸精度,降低能耗,提高生产率。为此,国外工业发达国家自70年代以来逐渐开发和推广起来一项新的模锻工艺——闭式多向精密模锻。其基本原理是在封闭的可分凹模中(水平或垂直分模),采用一个或数个冲头对毛
I. Introduction With the rapid development of automobile industry, higher requirements are put forward for the equipment and technology level in the forging industry. The outstanding problems are the reasonable choice of deformation mode based on the refining of rough blanks, the improvement of material utilization and the dimensional accuracy of forgings , Reduce energy consumption and increase productivity. To this end, developed industrial countries abroad since the 1970s has been gradually developed and promoted a new forging process - closed multi-direction precision forging. The basic principle is in a closed sub-divisional mold (horizontal or vertical parting), the use of one or several punch on the hair