Title: Effects of the sliding speed on the tribological behaviours of DF2 tool steel patternised by pulsed Nd:YAG laser

Authors: M. Hua, F.C. Chow, H.Y. Tam

Addresses: Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, P.R. China. ' Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, P.R. China. ' Department of Manufacturing Engineering and Engineering Management, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong, P.R. China

Abstract: DF2 tool steel is extensively used in tool and mould making industries. A great number of mechanical mould parts may involve relative sliding. Techniques to improve the tribological behaviours of DF2 components are being sought. Texturing of DF2 tool steel with staggered (ST) and in-lined (IN) patterns using pulsed Nd:YAG laser and tribological behaviours under wet lubrication condition were studied. Pin-on-plate tests under different sliding speeds showed superior tribological behaviours when compared with non-patterned (NP) counterparts. Some underlying mechanisms involved are also reported in this paper.

Keywords: surface texturing; wet lubrication; laser irradiation; DF2 tool steel; tribology; pulsed Nd:YAG lasers; sliding speeds; patterns.

DOI: 10.1504/IJAT.2009.029092

International Journal of Abrasive Technology, 2009 Vol.2 No.4, pp.329 - 344

Available online: 03 Nov 2009 *

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