WIT Press

Optimization Of Laser Surface Melt-hardening On Gray And Nodular Iron

Price

Free (open access)

Paper DOI

10.2495/SURF970251

Pages

10

Size

921 kb

Author(s)

Janez Grum, Roman Sturm & Pavle Zerovnik

Abstract

Laser surface melt-hardening has recently been successfully introduced into industry to improve the wear resistance of different parts made from gray and nodular irons. A characteristics of this procedure is rapid heating of a thin surface layer of the workpiece material above the melting point temperature. After the completion of heat treatment, a structure-modified surface layer is obtained consisting of the remelted and hardened layer. Experimental results of the study of laser surface melt-hardening process have confirmed that the procedure is suitable also for low-power CQ^ laser sources to increase the depth of the modified layer. Because of remarkable repeatability of the characteristics of the modified layer, it is possible

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