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Proceedings Paper

Finite element modeling of transient three-dimensional temperature field of workpiece with a sharp board in laser heat treatment
Author(s): Yunchang Fu; Junchang Li; Dongxiong Ling; Kun Ma; Martin Bruno
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Paper Abstract

The experiment of laser heat treatment of workpieces with a sharp board milled to be 90°, 55°, 45° and 35° has been finished to investigate the influences of the sharp board on the temperature field and the heat-affected zone. The spot of laser has been sampled using the thermal paper in two planes of different height h1 and h2, and the power distribution of laser has been simulated numerically. A finite element model of numerical calculation is developed to simulate the transient three-dimensional temperature field, and the shade plot and isotherm can be output in any longitudinal and transverse sections and then the hardened zones are determined. The several cross sections of treated workpieces are chosen to make the metallographical analysis and the comparisons with the numerical results. It has proved that the numerical results are in a good agreement with the experimental data and the sharp boards have a great influence on the temperature and the heat-affected zone when laser approaches to the sharp board of workpiece.

Paper Details

Date Published: 13 January 2005
PDF: 7 pages
Proc. SPIE 5629, Lasers in Material Processing and Manufacturing II, (13 January 2005); doi: 10.1117/12.575385
Show Author Affiliations
Yunchang Fu, Kunming Univ. of Science and Technology (China)
Junchang Li, Kunming Univ. of Science and Technology (China)
Dongxiong Ling, Kunming Univ. of Science and Technology (China)
Kun Ma, Kunming Univ. of Science and Technology (China)
Martin Bruno, Univ. de Bourgogne (France)

Published in SPIE Proceedings Vol. 5629:
Lasers in Material Processing and Manufacturing II
ShuShen Deng; Akira Matsunawa; Y. Lawrence Yao; Minlin Zhong, Editor(s)

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