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Quizzed 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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3. Rotating electrode

3.1 Principle

It involves melting the end of a horizontally-axed metal bar that rotates at high speed (several thousand revolutions per minute). The metal droplets are ejected by centrifugal force and cooled along their path by a neutral gas in a large-diameter chamber (itself cooled by a water circuit). The diameter of this enclosure is large enough for the droplets to solidify before touching it. In the lower part of the chamber, a collector collects the powder.

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3.2 Different processes

The development...

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Rotating electrode
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