合理的挤压模孔型设计,可以大大提高挤压模的寿命和制品的质量。因此,本文所研究的问题是,在挤压轴对称棒材时,模具最佳孔型的计算。最理想的条件是:变形载荷最小,金属的流动也没有停滞区。在计算时,假设变形金属具有如下特性:不硬化性,各向同性,均匀性,不可压缩 Reasonable extrusion die hole design, can greatly enhance the life of extrusion die and product quality. Therefore, the problem studied in this paper is the calculation of the optimum hole pattern of the die when the axisymmetric bar is extruded. The most ideal conditions are: minimum deformation load, metal flow and no stagnation zone. In the calculation, it is assumed that the deformed metal has the following properties: non-hardening, isotropy, uniformity, incompressibility