中厚板挤压成形力影响因素研究

成形力作为中厚板体积成形工艺设计中的主要参数之一,是压力机选择和模具强度校核的重要依据.以体积成形有限元分析为基础,运用正交实验法,使用不同的工艺参数组合对中厚板凸台挤压成形过程进行数值模拟,结果显示在不同的成形阶段,变形程度、材料类型和初始板厚是影响成形力的显著因子.研究了变形程度、材料性能、坯料初始厚度对凸台挤压成形力的影响规律.研究结果为中厚板凸台挤压工艺及模具设计提供了一定的理论指导和参考.

Research on influence factors of forming force in medium-thick sheet metal extrusion process

Forming force,as one of the main parameters in process design of medium-thick sheet metal bulk forming,is an important basis of press selection and tool strength checking.Based on the finite element method,a series of sheet metal extrusion process simulations were conducted under different combinations of process parameters,which were arranged by the orthogonal experiments method.The results show that the key factors which affect the forming force in different phases of the extrusion process are extrusion r...