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Proceedings Paper

Influence of compound laser life-extension treatment on mechanical properties of key parts of pellet traveling grate
Author(s): X. D. Ren; Y. K. Zhang; A. X. Feng; S. C. Zhu; X. L. Zhang
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Paper Abstract

An new composite strengthening and prolongation technique was discussed on the key components of pellet traveling grate, which are prone to thermal vibration fatigue, contact fatigue and wear resistance under the alternating high/low temperature. CO2 laser remelting was used to subject the key components of pellet traveling grate, improving the material's surface hardness, and the advanced surface treatment technique by utilizing intense laser shockwave was adopt. The impact of residual compressive stress generated by laser shock processing on fatigue life of surface cracks was discussed, and laser shock could effectively alleviate the residual stress at the surface and significantly improve the fatigue life and anti-stress corrosion performance. The result shows that composite laser treatment could effectively close up and repair cracks.

Paper Details

Date Published: 18 February 2009
PDF: 4 pages
Proc. SPIE 7276, Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications, 727616 (18 February 2009); doi: 10.1117/12.822148
Show Author Affiliations
X. D. Ren, Jiangsu Univ. (China)
Y. K. Zhang, Jiangsu Univ. (China)
A. X. Feng, Jiangsu Univ. (China)
S. C. Zhu, Jiangsu HongDa Special Steel Machinery Plant (China)
X. L. Zhang, Jiangsu Univ. (China)


Published in SPIE Proceedings Vol. 7276:
Photonics and Optoelectronics Meetings (POEM) 2008: Laser Technology and Applications
Peixiang Lu; Katsumi Midorikawa; Bernd Wilhelmi, Editor(s)

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