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Proceedings Paper

Laser-assisted forming: a promising new application of very high power lasers
Author(s): Dieter Schuoecker
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Paper Abstract

If production technology is divided into three groups -- namely processes with material removal, processes with material addition and processes without a change of workpiece mass, it points out immediately, that the first two groups have been conquered to a large extent by the laser, but the third group suffers from an essential lack of laser application. The reason is, that for these processes -- mainly forming -- rather strong mechanical forces are needed, that cannot be generated by a deliberation of optical energy. Nevertheless, the strong dependence of the yield strength, that must be reached for plastic deformations, on the temperature shows a way to reduce mechanical forces in forming and to obtain thus a beneficial effect of laser assistance. Moreover, hard and brittle materials, that cannot withstand deformations at room temperature without cracks or rupture, can be treated successfully with the help of lasers. Compared to conventional hot working, laser heating can be applied only to those regions of the workpiece, where strong deformations take place, thus beneficially reducing production time. A good example for the above solution is laser assisted deep drawing (LADD), that has been investigated by the author experimentally and theoretically. The latter studies, that will be presented in the actual paper, show clearly, that the above predictions are true, whereas a reduction of the drawing force up to 50% seems to be feasible. Nevertheless, relatively high beam powers up to several 10 Kilowatts must then be used, thus giving rise to a promising application of very high power lasers.

Paper Details

Date Published: 7 February 2000
PDF: 9 pages
Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); doi: 10.1117/12.377031
Show Author Affiliations
Dieter Schuoecker, Vienna Univ. of Technology (Austria)

Published in SPIE Proceedings Vol. 3888:
High-Power Lasers in Manufacturing
Xiangli Chen; Tomoo Fujioka; Akira Matsunawa, Editor(s)

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