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Proceedings Paper

Surface Hardening: Beam Shaping And Coating Techniques
Author(s): Kazie S. Jasnowski; Pedro Sanz Justes; Jose F. Zubiri Amatriain; Fermin Garciandia Ibanez
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Paper Abstract

The heat treatment and surface hardening of metals is a process that is of considerable interest to the metal working community. The use of lasers to accomplish this heat treatment permits one to produce results not possible with other methods. However, due to the somewhat complex nature of this process it can be confusing and it is sometimes difficult to understand exactly how to proceed: What type of beam shaping to use, what type of coatings to apply, what power levels to use, what laser, etc. In this paper , an examination of four distinct methods of beam shaping are presented. They are: 1. Focusing lens only 2. Beam scanner 3. Beam integrating mirror 4. Kaleidoscope (also known as the light pipe) Coating such as graphite paint, Manganese phosphate and black paint are used. The performance of these devices together with these various coatings, is then examined. Also factors such as the following are considered: 1. Power loss in each device 2. Energy uniformity that each produces 3. Penetrations possible 4. Limitations of each 5. Ease of installation and operation 6. Suitability of each for certain applications. Concerning the coatings, such things as: 1. Types 2. Coating thickness are studied. Each device was used in actual heat treatment with the data then examined and presented here with the hope being that specific merits and drawbacks would become evident.

Paper Details

Date Published: 26 October 1989
PDF: 11 pages
Proc. SPIE 1132, High Power Lasers and Laser Machining Technology, (26 October 1989); doi: 10.1117/12.961587
Show Author Affiliations
Kazie S. Jasnowski, Centro Laser de Navarra (Spain)
Pedro Sanz Justes, Centro Laser de Navarra (Spain)
Jose F. Zubiri Amatriain, Centro Laser de Navarra (Spain)
Fermin Garciandia Ibanez, Centro Laser de Navarra (Spain)

Published in SPIE Proceedings Vol. 1132:
High Power Lasers and Laser Machining Technology
Michel Gaillard; A. Quenzer, Editor(s)

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