
模具技术2016.No.4
文章编号:1001-4934(2016)04-0059-05
改善铬钼模具钢综合性能的热处理工艺研究
陆元三
(湖南财经工业职业技术学院机电工程系,湖南衡阳421008)
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摘要:铬钼模具钢有很高的硬度和耐磨性,在冷作模具中应用十分广泛,但该钢种强韧性较低,易导致模具早期失效。为了提高铬钼模具钢模具的强度和韧性,研究了一种强韧化处理工艺,材料经锻造、余热淬火、高温回火、机械加工后,进行真空泽火加 3次回火,再经线切割后采用冷处理及表面强化处理。通过这种热处理工艺,不仅保证了模具强度和硬度,同时又提高了模具的韧性和抗冲击能力,从而使模具获得了最
佳的综合机械性能,模具的使用寿命成倍增加。关键词:铬钼钢;模具;热处理;工艺
中图分类号:TG156
文献标识码:B
Study on heat treatment process to improve the comprehensive performance of
chromemolybdenum steel
LUYuan-san
Abstract: Chrome molybdcnum steel possesses high hardness and wear resistance,so it is widely used in the cold working dies. But its low strength and toughness can easily lead to prcmature failure of the die. In order to improve the strength and toughness of chrome mo-lybdenum steel die, a strengthening-toughening heat treatment process is investigated.The steel is processed by forging, after heat hardening, high temperature tempering, machi-ning, vacuum quenching and thrce times tempering, wire clcctrode-cutting, cold treatmcnt and surface strengthening treatment. The treatment process not only can ensure the die's strength and hardness, but also improve its toughness and impact resistant ability, so that the die and mould can obtain the best comprehensive mechanical properties and multiplied service life.
Keywords: chrome molybdenum steel; dies; heat treatment; process
和生产成本的主要因素,随着工艺设备能力和
0引言
模具的质量和使用寿命是影响冲压件质量
加工速度的提高,以及生产批量的扩大,对配套使用的冲压模具的性能和寿命有了更高的要求。而模具的承载能力和工作寿命主要取决于
收稿日期:2016-02-20
基金项目:湖南省教育厅2015年科学研究项目《冷冲压模具表面复合强化技术研究及应用》(15C0192)。
作者简介:陆元三(1971一),男,副教授。万方数据