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Proceedings Paper

Laser surface hardening for tooling high-speed steel
Author(s): Weina Liu; Fengming Bai; Dongyun Zhang; Ling Chen; Jingyi Wang; Yang Xia
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Paper Abstract

Annealed high speed steels for making tools such as W6Mo5Cr4V2, W9Mo3Cr4V1, W18Cr4V were treated with 5 kw continuous adjusting CO2 laser. By controlling laser- processing parameters, we achieved variable datum about the depth and hardness of the surface hardening layer of the samples. The relationship between the depth of hardening layer and laser processing parameters were studied with microhardness meter, scanning electronic microscope. The results showed that the sample's micro organization was markedly fined, dislocation and twin crystal subconstruction was strikingly increased, its hardness was obviously higher than that of general heat treatment.

Paper Details

Date Published: 15 August 1998
PDF: 5 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317895
Show Author Affiliations
Weina Liu, Changchun Institute of Optics and Fine Mechanics (China)
Fengming Bai, Changchun Institute of Optics and Fine Mechanics (China)
Dongyun Zhang, Changchun Institute of Optics and Fine Mechanics (China)
Ling Chen, Changchun Institute of Optics and Fine Mechanics (China)
Jingyi Wang, Changchun Institute of Optics and Fine Mechanics (China)
Yang Xia, Changchun Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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