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Rapid manufacturing of hybrid tools made of tool steel and tungsten carbide-cobalt

Schnelle Fertigung von Hybridwerkzeugen aus Werkzeugstahl mit einer Wolframcarbid-Cobalt-Schicht
 
: Gläser, T.; Klocke, F.

Beiss, P.; Bröckmann, C.:
Tool steels - deciding factor in worldwide production. Vol. 2 : Tool 09, proceedings of the 8th International Tooling Conference, 8ITC. RWTH Aachen University, Aachen, Germany, June 2 - 4, 2009
Aachen: Mainz, 2009
ISBN: 978-3-86130-701-3
ISBN: 3-86130-701-4
pp.787-796
International Tooling Conference (Tool) <8, 2009, Aachen>
English
Conference Paper
Fraunhofer IPT ()

Abstract
The Rapid Manufacturing process 'Laser Sintering' is a powder metallurgical process. The process principle is based on a local consolidation, e.g. melting or sintering, of powdered materials as a result of the absorption of laser radiation. For this purpose a powder layer is applied onto a build up plate through a wiping system. A laser beam consolidates defined areas, being directed over the material by a scanner device. Through the cyclic repetition of material application, consolidation and the lowering of the build up plate, a three dimensional geometry develops. The authors present investigations on the manufacture of hybrid tools made of tool steel and tungsten carbide-cobalt. The aim of the research activities is to manufacture a base body of a tool using a tool steel powder. Tool's components with internal geometries, cavities or undercuts can be manufactured with a high build up rate by a Rapid Manufacturing process using a tool steel powder. After changing the powder the process can be continued to manufacture defined tool's geometrical elements using a WC-Co powder. The resulting hybrid tools feature a high complexity level and a high resistance against wear in defined areas.

: http://publica.fraunhofer.de/documents/N-113037.html