ADDITIVE MANUFACTURING BUILD UNITS WITH PROCESS GAS INERTIZATION SYSTEMS

A build unit (110) for additively manufacturing three-dimensional objects (116) may include an energy beam system (118) having one or more irradiation devices (216) respectively configured to direct one or more energy beams (214) onto a region of a powder bed (227), and an inertization system (200)...

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Bibliographische Detailangaben
Hauptverfasser:	Halla, Eric Edward, Jaiswal, Shashwat Swami, Mallina, Ramakrishna Venkata, Ramakrishnan, Kishore, Pontiller-Schymura, Peter, Shalaby, Mohammed Mounir
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CASTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STEAM ENGINES TRANSPORTING WEAPONS WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A build unit (110) for additively manufacturing three-dimensional objects (116) may include an energy beam system (118) having one or more irradiation devices (216) respectively configured to direct one or more energy beams (214) onto a region of a powder bed (227), and an inertization system (200) including an irradiation chamber (120) defining an irradiation plenum (121), one or more supply manifolds (202), and a return manifold (204). The one or more supply manifolds (202) may include a downflow manifold (210) configured to provide a downward flow of a process gas through at least a portion of the irradiation plenum (121) defined by the irradiation chamber (120), and/or a crossflow manifold (222) configured to provide a lateral flow of the process gas through at least a portion of the irradiation plenum (121) defined by the irradiation chamber (120). The return manifold (204) may evacuate or otherwise remove process gas from the irradiation plenum (121) defined by the irradiation chamber (120). While irradiating the region of the powder bed (227), the process gas may flow through the one or more supply manifolds (202), into the irradiation plenum (121), and from the irradiation plenum (121) into the return manifold (204).