APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WHICH INCLUDES A HEATING SYSTEM

An apparatus (10) for producing a three-dimensional work piece comprises a carrier (14) adapted to receive a layer of raw material powder, a control unit (48), an irradiation system (16) adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder appl...

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Bibliographische Detailangaben
Hauptverfasser:	Krol, Toni Adam, Schwarze, Dr. Dieter, Wilkes, Jan
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CASTING MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER PERFORMING OPERATIONS POWDER METALLURGY SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING CEMENT, CLAY, OR STONE 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 comprises a carrier (14) adapted to receive a layer of raw material powder, a control unit (48), an irradiation system (16) adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier (14) from a sintering/melting radiation emission plane (18), wherein the control unit (48) is adapted to control the operation of the irradiation system (16) in such a manner that the raw material powder is heated to a first temperature (T1) which allows sintering and/or melting of the raw material powder in order to generate a layer of the three-dimensional work piece, and a heating system (28) adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier (14) from a heating radiation emission plane (30a, 30b) that is different from the sintering/melting radiation emission plane (18), wherein the control unit (48) is adapted to control the operation of the heating system (28) in such a manner that the raw material powder is heated to a second temperature (T2) that is lower than the first temperature (T1).