热处理对冷作模具钢Cr8WMo2V2SiNb组织和力学性能的影响

特殊钢 ›› 2010, Vol. 31 ›› Issue (1): 49-51.

热处理对冷作模具钢Cr8WMo2V2SiNb组织和力学性能的影响

迟宏宵^1,2, 吴立志³, 马党参², 张占普³, 雍歧龙^1,2

1昆明理工大学材料与冶金工程学院，昆明650093；
2钢铁研究总院，北京100081 ；
3河冶科技股份有限公司，石家庄050031

收稿日期:2009-07-02 出版日期:2010-02-01 发布日期:2022-10-27
作者简介:迟宏宵( 1983-),男，博士研究生，从事工模具钢研究与开发。

Effect of Heat Treatment on Structure and Mechanical Properties of Cold Work Die Steel Cr8WMo2V2SiNb

Chi Hongxiao^1,2, Wu Lizhi³, Ma Dangshen², Zhang Zhanpu³, Yong Qilong^1,2#br# #br#

1 Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093;
2 Central Iron and Steel Institute, Beijing 100081；
3 Heye Science and Technology Co Ltd, Shijiazhuang 050031

Received:2009-07-02 Published:2010-02-01 Online:2022-10-27

摘要/Abstract

摘要： 研究了1000～1240℃淬火,以及1100℃淬火+200～580℃回火对25 kg真空感应炉冶炼的Cr8WMo2V2SiNb钢(%:0.96C、1.11Si、7.79Cr、1.79Mo、2.16V、0.96W、0.60Nb)Φ13 mm锻材的淬火组织和晶粒度,淬-回火组织、硬度和冲击功的影响。结果表明,Cr8WMo2V2SiNb钢1 100℃淬火后的硬度HRC值为64.5;1100℃淬火+520℃回火有明显二次硬化效应,硬度达到最大值-HRC62.5,并有较好的韧性,冲击功为8.7 J。

关键词: 冷作模具钢, Cr8WMo2V2SiNb, 热处理, 组织, 力学性能

Abstract: Effect of quenching treatment at 1 000 ~ 1 240 Y and quenching at 1 100 °C + tempering at 200 〜580℃ treatment on quenched structure and grain size, quenched-tempered structure, hardness and impact energy of 613 mm forged product of steel Cr8WMo2V2SiNb (% ： 0. 96C, 1. HSi, 7. 79Cr, 1. 79Mo, 2. 16V, 0. 96W, 0. 60Nb) melted by a 25 kg vacuum induction furnace, has been studied. Results show that with 1 100 ℃ quenching, the hardness HRC value of steel Cr8WMo2V2SiNb is 64. 5, with 1 100 ℃ quenching + 520 ℃. tempering the steel has obvious secondary hardening effect, and the hardness of steel is coming to maximum i. e. HRC62. 5 with better toughness i. e. impact energy 8. 7 J.

Key words: Cold Work Die Steel, Cr8WMo2V2SiNb, Heat Treatment, Structure, Mechanical Properties

迟宏宵, 吴立志, 马党参, 张占普, 雍歧龙. 热处理对冷作模具钢Cr8WMo2V2SiNb组织和力学性能的影响[J]. 特殊钢, 2010, 31(1): 49-51.

Chi Hongxiao, Wu Lizhi, Zhang Zhanpu, Yong Qilong. Effect of Heat Treatment on Structure and Mechanical Properties of Cold Work Die Steel Cr8WMo2V2SiNb[J]. Special Steel, 2010, 31(1): 49-51.