Method for preparing a metal powder for an additive manufacturing process and use of such powder

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12128375
APP PUB NO 20220280999A1
SERIAL NO

17632359

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Abstract

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The present invention relates to a method for preparing a metal powder intended for an additive manufacturing process, of the type that involves scanning a bed of powder by a near-infrared laser beam, characterized in that the method comprises: an initial step for selecting a powder, which has an optical reflectivity of higher than 70% for a wavelength ranging between 800 and 1500 nm; then a step for treating said powder, which is different from particle grafting, and which induces a physical and/or chemical surface modification of the grains of said powder, making it possible to lower its optical reflectivity, at the given wavelength. The invention also relates to the use of such a powder, the grains having, after treatment, a median grain size d50 of between 5 and 50 μm.

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Patent Owner(s)

  • CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE ET FROTTEMENT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bucher, Sébastien Saint Etienne, FR 5 5
Pupier, Christophe Gérard Genas, FR 2 1

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