The reason of early failure of die is analysed from heat treatment,pressure distribution on the deforming surface and extrusion speed,and the measures to prevent or reduce such failure are proposed.

• 模具的热处理、变形表面压力分布、挤压速度等角度分析了模具早期失效的原因，并提出了防止和减少模具早期失效的措施。