ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2024, Vol. 45 ›› Issue (4): 131-138.DOI: 10.20057/j.1003-8620.2024-00037

• 形变与相变 • 上一篇    下一篇

1Cr16Co5Ni2MoWVNbN耐热钢球座模锻成型工艺模拟与试验验证

梅飞强1, 赵吉庆3, 闫磊1,  王云海2,3,杨钢3   

  1. 1 中国航发沈阳黎明航空发动机有限责任公司,沈阳 110043;
    2 内蒙古科技大学材料与冶金学院,包头 014010;
    3 钢铁研究总院有限公司特殊钢研究院,北京 100081
  • 收稿日期:2024-02-23 出版日期:2024-07-30 发布日期:2024-08-01
  • 通讯作者: 赵吉庆
  • 作者简介:梅飞强(1989—),男,硕士,工程师

Simulation and Test Validation on Die forging Process of 1Cr16Co5Ni2MoWVNbN Heat-resistant Steel Ball seat

Mei Feiqiang1, Zhao Jiqing3, Yan Lei1,  Wang Yunhai2,3,Yang Gang3   

  1. 1 AVIC Shenyang Liming Aeroengine Co., Ltd ., Shenyang 110043,China;
    2 School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, China;
    3 Research Institute of Special Steels, Central Iron and Steel Research Institute, Beijing 100081, China
  • Received:2024-02-23 Published:2024-07-30 Online:2024-08-01

摘要: 通过热压缩模拟实验研究了1Cr16Co5Ni2MoWVNbN耐热钢在热变形过程中的动态再结晶行为,通过Deform 3D有限元数值模拟研究了应变速率和坯料尺寸对1Cr16Co5Ni2MoWVNbN 耐热钢球座模锻成型工艺的影响。热压缩试验结果表明,1Cr16Co5Ni2MoWVNbN 耐热钢发生动态再结晶、混晶现象不明显的临界变形量约为20%,增大应变速率有利于在小变形量下,获得更加均匀的组织。数值模拟结果表明,随着应变速率提高,模锻件最小变形区域的等效应变与等效应力均增加,随着坯料直径增加,模锻件最小变形区的等效应变下降,等效应力先降低后提高。应变速率为0.1 s-1时,坯料直径ϕ60 mm~ϕ65 mm,最小变形区域工程应变可达到20%以上,且具有较好的锻造成型性。根据数值模拟结果,设计了直径ϕ60 mm、高度74 mm的坯料,以0.1 s-1的应变速率进行模锻验证试验,试制出的锻件成型好、组织与硬度均匀,验证了数值模拟结果的合理与可行性。

关键词: 1Cr16Co5Ni2MoWVNbN 耐热钢, 数值模拟, 模锻成型, Deform 3D 软件, 动态再结晶

Abstract: The dynamic recrystallization behavior of 1Cr16Co5Ni2MoWVNbN heat-resistant steel during thermal deformation was studied by thermal compression simulation experiments. The effects of strain rate and blank size on the die forging process of 1Cr16Co5Ni2MoWVNbN heat-resistant steel ball seat were studied by Deform 3D finite element numerical simulation. The results of thermal compression test showed that the critical deformation of 1Cr16Co5Ni2MoWVNbN heat-resistant steel was about 20% when full dynamic recrystallization happened and the phenomenon of mixed crystalline was not obvious. And increasing the strain rate was conducive to obtaining a more uniform structure under small deformation. The numerical simulation results showed that with the increase of the strain rate, the equivalent strain and equivalent stress in the minimum deformation area of the die forging increased. And With the increase of the diameter of the blank, the equivalent strain in the minimum deformation zone of the die forging decreased, and the equivalent stress decreased first and then increased. When the strain rate is 0.1 s-1, and the diameter of the blank is 60 mm - 65 mm, the engineering strain in the minimum deformation area can reach more than 20%, and it had good forging formability. According to the numerical simulation results, a blank size with diameter of 60 mm and height of 74 mm was designed to verifying the forming of the die forging with strain rate of 0.1 s-1. The forgings were well formed, uniform in structure and hardness, which verified the rationality and feasibility of the numerical simulation results.

Key words: 1Cr16Co5Ni2MoWVNbN Heat-resistant Steel, Numerical simulation, Die forging forming, Deform 3D software, Dynamic recrystallisation

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