在进行冷挤压时,特别是对较硬的金属材料进行冷挤压时,所需的变形力是相当大的。所以在冷挤压之前对挤压力进行计算是必不可少的一环。计算挤压力的目的在于按照挤压力选择合适的压力机和考核单位挤压力是否超过了模具钢所能承受的负荷。目前,模具钢所允许的极限单位压力为 When cold-extrusion is carried out, in particular when cold-pressing a relatively hard metallic material, the required deformation force is considerable. Therefore, the calculation of squeeze pressure before cold extrusion is an essential part. The purpose of calculating the squeezing force is to select the suitable squeezer according to the squeezing pressure and to check whether the squeezing pressure exceeds the load that the mold steel can bear. At present, the die steel limit unit pressure allowed