ADJUSTING PROCESS PARAMETERS OF AN ADDITIVE MAHUFACTURING PROCESS TO REDUCE CONGLOMERATED POWDER IN CAVITY

A method of making a part (32,34;82) includes creating a computer file (22) defining the part (32,34;82) in layers and a model of a body blank (80) to represent a space defined by a cavity (38) in the part (32,34;82). The part (32,34;82) is built using an additive manufacturing process. A layer of p...

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Bibliographische Detailangaben
Hauptverfasser:	RIZZO Jr., John P, BUTCHER, Evan, OSWALD, Caitlin, SMITH, Monica C
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 CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING FUNCTIONAL ELEMENTS OF SUCH SYSTEMS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PERFORMING OPERATIONS PHYSICS POWDER METALLURGY REGULATING 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:	A method of making a part (32,34;82) includes creating a computer file (22) defining the part (32,34;82) in layers and a model of a body blank (80) to represent a space defined by a cavity (38) in the part (32,34;82). The part (32,34;82) is built using an additive manufacturing process. A layer of powdered material (26) is deposited into a powder bed. The powder bed is preheated by applying a first beam current with a first energy. A second beam current with a second energy level greater than the first energy level is applied to a first region of the layer of the powder bed not including a portion of the cavity (38). A second region of the powdered material (26) is selectively melted. The partially built part (32A) and layer of the powdered material (26) are lowered. Steps are repeated for additional layers in accordance with the computer file (22) to create the part (32,34;82).