ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2010, Vol. 31 ›› Issue (1): 49-51.

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

Chi Hongxiao1,2,  Wu Lizhi3,  Ma Dangshen2,  Zhang Zhanpu3,  Yong Qilong1,2#br# #br#   

  1. 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 Online:2010-02-01 Published:2022-10-27

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. 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
  • 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。

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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

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

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