奥氏体热作模具钢的性能与应用

• 作 者: 何向山
• 机 构: 华中工学院,大冶钢厂,山川机械厂
• 出 处: 兵器材料科学与工程
• 发表日期: 1985年12期
• 关键词: 热作模具钢 时效温度 热挤压成形 高温合金 坯料加热 固溶温度 受热温度 奥氏体钢 挤压力 弹药筒

一、前 言 近年来,随着热挤压成形技术的发展,对模具材料的性能提出越来越高的要求。如热挤钢质弹药筒和B30白铜管时,坯料加热温度高,挤压力大,使得模具的受热温度近800℃。目前常用3Cr2W8V钢制造模具,由于使用过程中软化快,大多数模具早期塑性变形失效,模具使用寿命很低。某单位曾用高温合金制做模具,其成本高,工艺性能差,在工业生产上尚难获得广泛应用。

First, the foreword In recent years, with the development of hot extrusion forming technology, the performance of mold materials put forward higher and higher requirements. Such as hot extrusion of steel cartridges and B30 brass, the billet heating temperature is high, the extrusion pressure, making the mold temperature of nearly 800 ℃. Currently used 3Cr2W8V steel mold, due to the use of softening fast, most of the early plastic deformation of the mold failure, the mold life is very low. A unit of high temperature alloy used to make molds, the high cost, poor process performance, it is difficult to obtain a wide range of industrial applications.