Optimization of laser-glazing parameters for reduction of residual stress

Yunming Zhu; Ren-ji Zhang; Jianqing Dou; Mianchang Liang

doi:10.1117/12.144176

11 May 1993 Optimization of laser-glazing parameters for reduction of residual stress

Yunming Zhu, Ren-ji Zhang, Jianqing Dou, Mianchang Liang

Proceedings Volume 1979, 1992 International Conference on Lasers and Optoelectronics; (1993) https://doi.org/10.1117/12.144176
Event: 1992 International Conference on Lasers and Optoelectronics, 1992, Bejing, China

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.

Citation Download Citation

Yunming Zhu, Ren-ji Zhang, Jianqing Dou, and Mianchang Liang "Optimization of laser-glazing parameters for reduction of residual stress", Proc. SPIE 1979, 1992 International Conference on Lasers and Optoelectronics, (11 May 1993); https://doi.org/10.1117/12.144176

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