一、前言杯杆形复合挤压工艺,除了用于轴对称零件以外,尚有非轴对称零件。轴对称复合挤压时,一部分金属向正挤方向流动,另一部分则向反挤方向流动,中间存在分流点,此分流点的直径与位置决定了金属的流动量。但是非轴对称零件,由于几何形状的变化使变形不均匀性增口,将会影响金属的流动。本文从多边形复合挤压试验着手,探索几何形状对复合挤 First, the preamble Cup-shaped composite extrusion process, in addition to the axisymmetric parts, there are non-axisymmetric parts. Axisymmetric composite extrusion, part of the metal to the positive direction of extrusion, the other part of the direction of anti-extrusion flow, the middle of the diversion point, the diversion point of the diameter and location of the metal flow. However, non-axisymmetric parts, due to changes in the geometry of the uneven deformation of the mouth, will affect the metal flow. In this paper, we start with polygonal extrusion test to explore the geometric shape of the compound extrusion