Journal Published Online: 16 October 2008
Volume 5, Issue 9

Determination of Surface Heat Transfer Coefficients of Cr12MoV Steel Cylinder during High-Speed Gas Quenching at Atmospheric Pressure

CODEN: JAIOAD

Abstract

In the numerical simulation of quenching processes, establishment of the boundary conditions for the temperature field and stress field are very important. However, determination of the boundary conditions of the temperature field is very complicated. In order to simulate the thermal strain, thermal stress, residual stress, and microstructure of the steel during high-speed gas quenching at atmospheric pressure using a numerical method, it is necessary to obtain an accurate boundary condition of temperature field. The surface heat transfer coefficient is a key parameter. The explicit finite difference method, nonlinear estimate method, and the experimental relationship between temperature and time during quenching have been used to solve the inverse problem of heat conduction during gas quenching. The relationships between surface temperature and surface heat transfer coefficient of a solid cylinder are provided here. In addition, it is shown that this technique can determine the effective surface heat transfer coefficients during high-speed gas quenching.

Author Information

Heming, Cheng
Kunming University of Science and Technology, Kunming, China
Jianyun, Li
Kunming University of Science and Technology, Kunming, China
Ziliang, Li
Kunming University of Science and Technology, Kunming, China
Lijun, Hou
Kunming University of Science and Technology, Kunming, China
Jie, Hou
Kunming University of Science and Technology, Kunming, China
Pages: 5
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JAI101813
ISSN: 1546-962X
DOI: 10.1520/JAI101813