Article | REF: IN221 V1

Manufacture of metallic powders using PREP

Author: Yvon MILLET

Publication date: April 10, 2015, Review date: December 7, 2020

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Overview

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ABSTRACT

This article deals with the PREP® technology, which is used to manufacture metal powders. This technology consists in making fine droplets of liquid metal using plasma arc melting, which are then centrifugally ejected at the end of a bar rotating at a very high speed. This takes place in a large-diameter water-cooled tank in a helium or argon atmosphere. The rotation speed of the bar is the main factor for setting the average diameter of the particles. Particles are spherical with no satellites. This technology needs great cleanness and caution in order to avoid contamination. Typical particle size is about 100 μm..

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AUTHOR

  • Yvon MILLET: R&D Director Europe TIMET Savoie, Ugine, France

 INTRODUCTION

Key points

Area: manufacturing technology

Degree of technology diffusion: Emergence | Growth | Maturity

Technologies involved: plasma torch fusion, centrifugation

Applications: aerospace, medical, additive manufacturing, laser fusion cladding

Main French players: TIMET Savoie, Aubert & Duval

Competence centers: ONERA Palaiseau: gas atomization; Plateforme Poudrinnov CEA Grenoble; LERMPS-UTBM Site de Sévenans, Belfort

Other global players: TIMET Powder Metals

Contact: http://www.timet.com

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Metal powder manufacturing using the PREP® method