According to stress distribution pattern in working region of the workpiece, the plasticflowcondition is inspected, the mechanism of cold rolling forming is analyzed.
通过工件工作区的应力分布云图考察金属材料的塑性流动情况，分析冷辗成形的机理。
2
The flowcondition of plastic melt in the extrusion die is analysed in this paper, and the design method of the die lip-length for plastic plate extrusion is also given.