一、前言 近几年来,随着机械制造行业中的少、无切削加工工艺的发展,对模具的数量和质量要求越来越高。因此,如何提高模具寿命是降低机械产品成本的关键环节。为此,本文从模具的材料-工艺-性能的内在联系入手,就榆次液压件厂齿轮热锻模使用寿命过低进行分析探讨,找出模具的失效原因,提出改进措施,以达到提高模具使用寿命的目的。 First, the foreword In recent years, with the machinery manufacturing industry in the less, no cutting process development, the number of molds and the quality requirements are getting higher and higher. Therefore, how to improve the life of the mold is the key to reduce the cost of mechanical products. Therefore, this article starts with the inner relationship of the material-process-performance of the mold, analyzes and discusses the service life of the gear hot forging die in Yuci Hydraulic Factory, finds out the cause of the failure of the mold and puts forward the improvement measures to improve the mold The purpose of life.