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    Volume 8, Issue 2 (February 2019)

    Special Issue Paper

    Optimization Based on Orthogonal Experiment Design and Numerical Simulation for Carburizing Quenching Process of Helical Gear

    (Received 3 February 2018; accepted 13 April 2018)

    Published Online: 2019

    CODEN: MPCACD

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    Abstract

    Predictions of distortion and hardness after heat treatment by numerical simulation are very useful for determining the optimum condition and for controlling the distortion of machinery parts. In this article, the combination method of orthogonal experiment and numerical simulation is used to optimize the standard heat treatment condition by reducing the distortion after carburizing quenching. A helical gear made of carburizing steel 20MnCrS5 is simulated using three-dimensional coupled analysis that is based on thermo-mechanical theory. The good agreement between the experiment and simulation is verified by the comparison between the experimental data and the simulated data. Firstly, the influencing factors of distortion after carburizing quenching are investigated and discussed. Four influence factors of heat treatment are selected as follows: carburizing time, the cooling time before 860°C, the holding time at 860°C, and the gear orientation during quenching. Next, selection of the optimal case is then determined by comparing the distortions. Finally, a new optimization method of minimum distortion after carburizing quenching is provided.

    Author Information:

    Miao, Shan
    Department of Material Science and Engineering, Saitama Institute of Technology, Fukaya, Saitama

    Ju, Dong-Ying
    Department of Material Science and Engineering, Saitama Institute of Technology, Fukaya, Saitama

    Chen, Yong
    School of Mechanical Engineering, Hebei University of Technology, Hongqiao District, Hebei, Tianjin

    Liu, Yi-qi
    7DCT/H Project team, Geely Powertrain Research institute, Ningbo, Zhejiang


    Stock #: MPC20180019

    ISSN:2379-1365

    DOI: 10.1520/MPC20180019

    Author
    Title Optimization Based on Orthogonal Experiment Design and Numerical Simulation for Carburizing Quenching Process of Helical Gear
    Symposium ,
    Committee A01