THREE DIMENSIONAL STRUCTURE PRODUCING DEVICE AND PRODUCING METHOD

• Main Authors: FUWA, ISAO, UENAGA, SHUSHI, YOSHIDA, NORIO, SHIMIZU, TAKASHI, ABE, SATOSHI, HIGASHI, YOSHIKAZU, TOGEYAMA, HIROHIKO, TAKENAMI, MASATAKA
• Format: Patent
• Language: English; French; Japanese
• Published: 10.09.2004
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; ARTIFICIAL STONE; CASTING; CEMENTS; CERAMICS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; LIME, MAGNESIA; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; REFRACTORIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SLAG; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF NATURAL STONE; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A light beam irradiation means (3) irradiates a predetermined region of a powder layer (10) formed on a stage with a light beam to sinter the powder in the predetermined region. A powder supply means (2) supplies a powder layer to the stage and to a sintered layer which has already been sintered. The light beam irradiation means (3) is adapted to radiate a light beam obliquely toward the powder layer (10) deviated from a position immediately above the light beam irradiation range. The fume produced by heating the powder layer with a light beam by irradiation rises to a position immediately thereabove; therefore, radiating a light beam from a position other than the one immediately thereabove reduces clouding due to fume from the light beam irradiating means. Selon l'invention, un élément d'irradiation à faisceau lumineux (3) irradie une zone prédéterminée d'une couche pulvérulente (10) formée sur un échelon, au moyen d'un faisceau lumineux, afin de fritter la poudre dans la zone prédéterminée. Un élément d'alimentation de poudre (2) achemine de la poudre vers l'échelon et vers une couche frittée. Ledit élément d'irradiation à faisceau lumineux (3) est conçu pour émettre un faisceau lumineux de façon oblique en direction de la couche de poudre (10). De la fumée est produite par chauffage de la couche de poudre. Par conséquent, l'irradiation d'un faisceau lumineux depuis une position différente permet de réduire la production de fumée.