• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (11): 269-281.doi: 10.3901/JME.2022.11.269

• 制造工艺与装备 • 上一篇    下一篇

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考虑微观晶粒的磨削相变分析与工艺优化研究

郭维诚1, 孙高翔1, 丁子珊1, 吴重军2, 刘晓3   

  1. 1. 上海理工大学机械工程学院 上海 200093;
    2. 东华大学机械工程学院 上海 201620;
    3. 上海航天设备制造总厂有限公司 上海 200245
  • 收稿日期:2021-09-28 修回日期:2022-02-01 出版日期:2022-06-20 发布日期:2022-08-08
  • 通讯作者: 丁子珊(通信作者),女,1988年出生,博士,副教授,硕士研究生导师。主要研究方向为航空航天精密零部件加工工艺与机理。E-mail:dzshan@usst.edu.cn
  • 作者简介:郭维诚,男,1990年出生,博士,讲师,硕士研究生导师。主要研究方向为精密与超精密加工技术和加工过程智能控制。E-mail:wcguo@usst.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(51705323)

Research on Phase Transformation Analysis and Process Optimization of Grinding Considering Microscopic Grains

GUO Weicheng1, SUN Gaoxiang1, DING Zishan1, WU Chongjun2, LIU Xiao3   

  1. 1. School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093;
    2. College of Mechanical Engineering, Donghua University, Shanghai 201620;
    3. Shanghai Aero-Space Equipment Manufacturing General Co. Ltd., Shanghai 200245
  • Received:2021-09-28 Revised:2022-02-01 Online:2022-06-20 Published:2022-08-08

摘要: 磨削加工过程中交变的力、热载荷会改变材料的微观晶粒结构,导致其发生相变,进而影响航空航天高端零件的使用性能。以微观晶粒与相变的关系为切入点,通过对惯性导航元件制造材料马氏体时效钢3J33进行磨削试验,分析了工艺参数对材料微观晶粒的影响规律,研究了晶粒尺寸与取向差角对不同物相成分转变比例的作用机制,探讨了影响相变的关键工艺因素,并建立了考虑微观晶粒的相变预测模型。结果表明,该模型能够更为准确地计算材料物相成分的转变比例,其结果优于基于温升率和应变率的传统相变模型。在此基础上,定量地计算了工艺参数对各相成分转变的敏感性,提出了面向晶粒细化及相变控制的工艺优化方案,为马氏体时效钢的高性能磨削加工提供了理论依据与工程指导。

关键词: 磨削, 微观晶粒, 相变, 工艺优化

Abstract: The alternating forces and thermal loads during the grinding process can change the microscopic grains in the material, resulting in phase transformation that can affect the performance of high-end aerospace parts. In this article, the relationship between microscopic grains and phase transformation are taken as the entry point, and the influence of process parameters on the microscopic grain of the material is analyzed through grinding experiments on the maraging steel 3J33, which is a kind of materials for manufacture of inertial navigation components. The mechanism of grain size and orientation difference angle on the transformation ratio of different phase components is investigated, and the key process factors affecting phase transformation are discussed. Then a phase transformation prediction model considering microscopic grains is established, and the results shows that the proposed model can calculate the transformation ratio of the phases more accurately than traditional phase transformation model based on heating rate and strain rate. On this basis, the sensitivity of the process parameters to the transformation of each phase is quantitatively calculated, and a process optimization scheme for grain refinement and phase transformation control is proposed, which provides a theoretical basis and engineering guidance for high-performance grinding of maraging steel.

Key words: grinding, microscopic grains, phase transformation, process optimization

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