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Proceedings Paper

Parameters and mechanism of laser cleaning rust deposit on the steel surface
Author(s): Zhenyong Sun; Jun Xu; Wengming Zhou
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Paper Abstract

The mechanism of laser cleaning rust deposit on the steel surface was studied experimentally. Especially, the parameters and mechanism of cleaning rust deposit from steel surface with pulsed YAG laser was studied in detail. The practical application of laser cleaning in maintenance was discussed in this paper. A pulsed YAG laser and a continued CO2 laser was used to do some experiment comparatively. The results demonstrated that the effect of pulsed YAG laser is better than continued CO2 laser. The pulsed YAG laser can accomplish complete cleaning by regulating parameters of laser, however, the continued CO2 laser can not. There are cleaning threshold and damage threshold in laser cleaning. Between the initial cleaning threshold and complete cleaning threshold, cleaning percentage of the surface increases with the increasing of laser fluence and pulse number, but does not depend on repetition rate. The mechanism of laser cleaning rust deposit with pulsed YAG laser is suggested: the vibration of deep rust deposit and thermal shock action induced by laser-supported detonation (LSD) to make rust particles sputter is primary, however, the thermal effect of laser irradiation is secondary.

Paper Details

Date Published: 12 September 2002
PDF: 4 pages
Proc. SPIE 4915, Lasers in Material Processing and Manufacturing, (12 September 2002); doi: 10.1117/12.482918
Show Author Affiliations
Zhenyong Sun, Second Artillery Engineering College (China)
Jun Xu, Second Artillery Engineering College (China)
Wengming Zhou, Second Artillery Engineering College (China)

Published in SPIE Proceedings Vol. 4915:
Lasers in Material Processing and Manufacturing
ShuShen Deng; Tatsuo Okada; Klaus Behler; XingZong Wang, Editor(s)

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