Investigation on Additive Manufacturing of Tungsten Carbide-cobalt by Selective Laser Melting☆

By E. Uhlmann, A. Bergmann, W. Gridin. 2015

161 citations recorded by the source corpus.

Abstract The production of special interior contoured tools made of cemented carbide is a time- and cost-intensive multistage sintering process. An alternative for economic, flexible and automated production is provided by a laser-based, additive manufacturing Selective Laser Melting process (SLM). In a shortened process chain near-net-shape and special interior contoured tools can be manufactured energy- and resource-efficiently in small batch sizes. An increase of the tool life is achieved by the use of wear resistant and tough cemented carbide material. This paper focusses on the process behavior of the agglomerated and pre-sintered tungsten carbide-cobalt (WC-Co) powder material in the SLM process. Depending on the exposure parameters, various types of micro structures can be generated and the original material profile can be significantly changed during the laser material interaction.

Subfields: Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/b8bef6a19a983599903ede1f40a356a673d198d5

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1. Chaoqun Zhang
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Citations in the corpus

• Additive manufacturing of WC-Co hardmetals: a review (2020, background): “High-energy density produces brittle structures with small WC grains and low Co content, and low-energy density produces tough structures with large WC grains and high Co content [70].”