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Proceedings Paper

Optimization of laser-glazing parameters for reduction of residual stress
Author(s): Yunming Zhu; Ren-ji Zhang; Jianqing Dou; Mianchang Liang
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Paper Abstract

Laser glazing of flame sprayed coatings of METCO Ni25 and Ni45A on mild and 1Cr18Ni9Ti stainless steel substrates is used on some valves in chemical plants. The surface residual stresses of these coatings can be detected using the x-ray diffraction method. It indicated that the residual stress condition of the treated coatings was affected by different parameters under laser processing. Based on this stress analysis, the optimum parameters, including coating composition, coating thickness, spot size, scanning speed and overlapping coefficient of laser beam, and pre-heating temperature of the parts before laser processing, were obtained.

Paper Details

Date Published: 11 May 1993
PDF: 8 pages
Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); doi: 10.1117/12.144176
Show Author Affiliations
Yunming Zhu, Tsinghua Univ. (China)
Ren-ji Zhang, Tsinghua Univ. (China)
Jianqing Dou, Tsinghua Univ. (China)
Mianchang Liang, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 1979:
1992 International Conference on Lasers and Optoelectronics
Sui-Sheng Mei; Bingkun Zhou, Editor(s)

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