金属热处理 ›› 2025, Vol. 50 ›› Issue (7): 313-321.DOI: 10.13251/j.issn.0254-6051.2025.07.046

• 数值模拟 • 上一篇    下一篇

浸淬方式对40Cr钢汽车前桥淬火变形行为与应力演变的影响

施渊吉1,2, 王孝文3, 黎军顽4, 董成通4, 陈泽瑜2, 钱黎明1, 展熠辉2   

  1. 1.南通理工学院 机械工程学院, 江苏 南通 226002;
    2.南京工业职业技术大学 机械工程学院, 江苏 南京 210046;
    3.武汉理工大学 汽车工程学院, 湖北 武汉 430070;
    4.上海大学 材料科学与工程学院, 上海 200072
  • 收稿日期:2025-01-20 修回日期:2025-05-07 出版日期:2025-07-25 发布日期:2025-07-28
  • 作者简介:施渊吉(1989—),男,副教授,博士,主要研究方向为机械加工与表面技术,E-mail:syuanji@163.com
  • 基金资助:
    江苏省工业感知及智能制造装备工程研究中心开放基金(ZK220507);江苏省高校青蓝工程优秀青年骨干教师项目

Influence of immersion quenching method on distortion and stress evolution of 40Cr steel automobile front axle during quenching

Shi Yuanji1,2, Wang Xiaowen3, Li Junwan4, Dong Chengtong4, Chen Zeyu2, Qian Liming1, Zhan Yihui2   

  1. 1. School of Mechanical Engineering, Nantong Institute of Technology, Nantong Jiangsu 226002, China;
    2. School of Mechanical Engineering, Nanjing Vocational University of Industry Technology, Nanjing Jiangsu 210046, China;
    3. School of Automotive Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China;
    4. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China
  • Received:2025-01-20 Revised:2025-05-07 Online:2025-07-25 Published:2025-07-28

摘要: 采用有限元方法,通过建立多物理场耦合模型研究了40Cr钢汽车前桥在不同浸淬方式下的温度场、应力演变和变形行为。结果表明,水平浸淬方式下前桥的温度分布更均匀,且前桥在长度方向的中心截面位置和总长度上的变形量分别比垂直浸淬方式降低约56.2%和48.9%,整体变形量更小。此外,不同浸淬方式对前桥的热应力、相变应力和等效应力影响较小,淬火后其热应力为-250~-500 MPa,相变应力为10~16 MPa,等效应力低于200 MPa,远小于40Cr钢的屈服强度,但水平浸淬方式下的等效应力分布更均匀。因此,水平浸淬方式下前桥在变形量和应力分布均匀性等方面表现更优。

关键词: 前桥, 淬火, 浸没方式, 冷却行为, 变形行为, 应力演变

Abstract: Temperature field, stress evolution and distortion behavior of 40Cr steel automobile front axle during quenching with different immersion quenching methods were studied through establishing multi-physical field coupling model by finite element method. The results show that the temperature distribution of the front axle quenched with horizontal immersion quenching method is more uniform, and the distortion at central section in length direction and total length of the front axle is about 56.2% and 48.9% lower than that of the vertical immersion method, respectively, and the overall distortion is smaller. Furthermore, the effect immersion quenching on the thermal stress, phase transformation stress and equivalent stress of the front axle is a little, as the thermal stress is -250--500 MPa, the phase transformation stress is 10-16 MPa, and the equivalent stress is less than 200 MPa, which is significantly lower than the yield strength of the 40Cr steel, however, the equivalent stress distribution of the horizontal immersion method is more uniform. In conclusion, the horizontal immersion quenching method performs better in terms of distortion and stress distribution uniformity.

Key words: front axle, quenching, immersion method, cooling behavior, deformation behavior, stress evolution

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