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Proceedings Paper

Effects of chopper on laser texturing of rolls by CO2 laser
Author(s): Duluo Zuo; Daqing Zhu; Zhene Xu; Shimin Li
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Paper Abstract

The effects of chopper on laser-texturing of rolls by CO2 laser are reported in the paper. The propagation of laser radiation through chopper can be described as four states: (1) chopping state; (2) transition state from chopping to transmitting; (3) transmitting state; and (4) transition state from transmitting to chopping. The distribution of laser energy flux on roll surface is derived from these descriptions and the assumption of Gauss beam, and the thermal physical process of laser-texturing is numerically simulated. It is true that the reflected laser radiation from state (1) and the direct laser radiation from state (3) can be superimposed to result in efficient texturing, but these effects are not so obvious as stated in published literatures. Shorter focal length will benefit in more efficient laser texturing because laser power density increase quickly with the decrease of focal length. In the case of short focal length, the superimposition effect is almost invisible, and the position of chopper because important, it should be near to the roll surface for a clear pattern of separated texturing points.

Paper Details

Date Published: 8 September 1999
PDF: 5 pages
Proc. SPIE 3862, 1999 International Conference on Industrial Lasers, (8 September 1999); doi: 10.1117/12.361090
Show Author Affiliations
Duluo Zuo, Huazhong Univ. of Science and Technology (China)
Daqing Zhu, Huazhong Univ. of Science and Technology (China)
Zhene Xu, Huazhong Univ. of Science and Technology (China)
Shimin Li, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 3862:
1999 International Conference on Industrial Lasers
Fuxi Gan; Horst Weber; Zaiguang Li; Qingming Chen, Editor(s)

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