Laser surface hardening for tooling high-speed steel

Weina Liu; Fengming Bai; Dongyun Zhang; Ling Chen; Jingyi Wang; Yang Xia

doi:10.1117/12.317895

15 August 1998 Laser surface hardening for tooling high-speed steel

Weina Liu, Fengming Bai, Dongyun Zhang, Ling Chen, Jingyi Wang, Yang Xia

Proceedings Volume 3550, Laser Processing of Materials and Industrial Applications II; (1998) https://doi.org/10.1117/12.317895
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Weina Liu, Fengming Bai, Dongyun Zhang, Ling Chen, Jingyi Wang, and Yang Xia "Laser surface hardening for tooling high-speed steel", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); https://doi.org/10.1117/12.317895

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