Research;
Center;
for;
Net;
Shape;
and;
Die;
Manufacturing,;
School;
of;
Mechanical;
Engineering,;
Pusan;
National;
University,;
Busan;
609-735,;
Korea;
Research;
laboratories,;
POSCO,;
Jeonnam;
545-090,;
Korea;
内高压成形; 摩擦系数; 实验; 有限元分析; 液压成形; 内部压力; 轴向进给; 几何尺寸;