摘要
给出了深小锥孔件开式冷挤压成形时极限变形程度的定义,通过对深小锥孔开式冷挤压成形时的变形分析,建立了变形区非稳态连续速度场,利用上限原理得到了极限变形程度的理论判据。
Maximum reduction when deep tine taper hole part is formed by open-die extrusion is defined. Through analysis of its forming characteristic, unstable continuity velocity field is established. The theoretical criterion of the maximum reduction is obtained by means of upper-bound method.
出处
《河北科技大学学报》
CAS
2005年第1期36-38,共3页
Journal of Hebei University of Science and Technology
基金
河北省自然科学基金资助项目(E2004000296)
关键词
变形程度
开式冷挤压
锥孔
挤压成形
变形区
判据
非稳态
极限
连续
上限
deep tine taper hole
open-die extrusion
unstable continuity velocity field
maximum reduction
upper-bound method
