METHOD FOR MANUFACTURING THREE-DIMENSIONALLY SHAPED STRUCTURE

• Main Authors: ABE SATOSHI, FUWA ISAO
• Format: Patent
• Language: English
• Published: 20.11.2008
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CASTING; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; PERFORMING OPERATIONS; POWDER METALLURGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a method for manufacturing a three-dimensionally shaped structure which can be easily machined after having been shaped. SOLUTION: The method for manufacturing the three-dimensionally shaped structure 8 comprises: a powder-layer-forming step of forming a powder layer by supplying metal powders to a plate 3 for shaping; and an irradiation step of irradiating the powder layer with a light beam to melt the powder layer and form a sintered and hardened layer. The method also includes removing a second region E2 by machining previously before shaping the three-dimensional structure, which corresponds to a region that is scheduled to be subjected to a predetermined machining step after the three-dimensionally structure has been shaped, out of the first region E1 that corresponds to the hardened layer of the plate 3 for shaping, which will be hardened in the irradiation step. The three-dimensionally shaped structure 8 can be easily machined, because the second region E2 is removed and there is no hardened portion in the region at which the plate 3 for shaping is machined. COPYRIGHT: (C)2009,JPO&INPIT