APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORKPIECE WITH IMPROVED GAS FLOW AND MANUFACTURING METHOD OF A THREE-DIMENSIONAL WORKPIECE

An apparatus (10) for producing a three-dimensional work piece, the apparatus (10) comprises a process chamber (12) accommodating a carrier (14) for receiving a raw material powder, an irradiation device (16) for selectively irradiating electromagnetic or particle radiation onto the raw material pow...

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Bibliographische Detailangaben
Hauptverfasser:	Schwarze, Dieter, Krol, Toni Adam, Wilkes, Jan
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 CASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM WORKING METALLIC POWDER WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An apparatus (10) for producing a three-dimensional work piece, the apparatus (10) comprises a process chamber (12) accommodating a carrier (14) for receiving a raw material powder, an irradiation device (16) for selectively irradiating electromagnetic or particle radiation onto the raw material powder on the carrier (14) in order to produce a work piece made of said raw material powder by an additive layer construction method, a first gas inlet (22) for supplying gas to the process chamber (12) and a gas outlet (26) for discharging gas from the process chamber (12), wherein the first gas inlet (22) and the gas outlet (26) are configured and arranged in such a manner that a first gas flow (F1) across the carrier (14) is generated, a transmission element (34) which allows the transmission of the electromagnetic or particle radiation emitted by the irradiation device (16) into the process chamber (12), and a second gas inlet (38) for supplying gas to the process chamber (12), wherein the second gas inlet (38) is configured and arranged in such a manner that a second gas flow (F2) in a direction facing away from the transmission element (34) is generated.