METHOD OF CONTROLLING THE COOLING RATE OF A MELT POOL OF A POWDER BED, AND DIRECT METAL LASER MELTING MANUFACTURING SYSTEM WITH IN-LINE LASER SCANNER

A method of controlling the cooling rate of a melt pool of a powder bed includes directing a first laser beam (5) on the powder bed to form a melt pool; coaxially aligning a second laser beam (7) with the first laser beam (5), and laterally offsetting a focus spot of the second laser beam (7) with r...

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Bibliographic Details
Main Authors KARP, Jason, Harris, CARTER, William, Thomas
Format Patent
LanguageEnglish
French
German
Published 07.04.2021
Subjects
CASTING
CHEMISTRY
CLADDING OR PLATING BY SOLDERING OR WELDING
CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING
GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS
MACHINE TOOLS
MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
METAL-WORKING NOT OTHERWISE PROVIDED FOR
METALLURGY
METALLURGY OF IRON
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
PERFORMING OPERATIONS
POWDER METALLURGY
SOLDERING OR UNSOLDERING
TRANSPORTING
WELDING
WORKING BY LASER BEAM
WORKING METALLIC POWDER
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Summary:A method of controlling the cooling rate of a melt pool of a powder bed includes directing a first laser beam (5) on the powder bed to form a melt pool; coaxially aligning a second laser beam (7) with the first laser beam (5), and laterally offsetting a focus spot of the second laser beam (7) with respect to the melt pool, wherein the second laser beam (7) heats but does not melt powder within the focus spot.
Bibliography:Application Number: EP20170791844