Contrasting machining technology with punch technology of elastic seat ring,analyzing the error created by punching,introducing the characteristic of punching and the structure of cut and carry die.

• 对弹性阀座的机械加工工艺和冲压加工工艺进行了对比,并分析了冲压加工所产生的误差,介绍了冲压加工的特点及级进模的结构。