In this paper are described factors that exercise an influence on life of cold extrusion punch, are analysed all destruction of punch, structure on its life. It is done to analyse the stress state of punch by stress test.

• 本文论述了影响冷挤压凸模寿命的因素,分析凸模的各种破坏状态,而后着重分析凸模结构对寿命的影响。