By analyzing the technique features of hot extruding forming, expatiate the clew and method of a hot extrusion die design,and introduce the hot extrusion die structure and its working process of an Brigde-Shell.

• 通过分析热压成形工艺特点,阐述了热压模设计思路及方法,介绍了桥壳热压模具结构及工作过程。