3차원 형상 조형물의 제조 방법 및 3차원 형상 조형물

• Main Authors: MORIMOTO MASANORI, ABE SATOSHI, FUWA ISAO, NAKAMURA AKIFUMI
• Format: Patent
• Language: Korean
• Published: 26.02.2018
• Subjects: 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; 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

금형으로서 보다 적합한 제열 특성을 갖는 3차원 형상 조형물의 제조 방법을 제공하기 위해서, 본 발명에서는, (i) 분말층의 소정 개소에 광 빔을 조사하여 해당 소정 개소의 분말을 소결 또는 용융 고화시켜 고화층을 형성하는 공정, 및 (ii) 얻어진 고화층 위에 새로운 분말층을 형성하고, 그 새로운 분말층의 소정 개소에 광 빔을 조사하여 추가로 고화층을 형성하는 공정에 의해 분말층 형성 및 고화층 형성을 교대로 반복 실행하는 3차원 형상 조형물의 제조 방법이 제공된다. 특히, 본 발명의 제조 방법에 있어서는, 3차원 형상 조형물의 내부에 냉각 매체로를 형성하는 동시에, 3차원 형상 조형물의 표면을 요철 형상으로 형성하고, 냉각 매체로의 윤곽면의 일부와 요철 형상의 표면을 서로 동일 형상으로 한다. In order to to provide a manufacturing method of a three-dimensional shaped object having a more proper heat removal property to be used as a metal mold, there is provided that a method for manufacturing a three-dimensional shaped object by alternate repetition of a powder-layer forming and a solidified-layer forming, the repetition comprising: (i) forming a solidified layer by irradiating a predetermined portion of a powder layer with a light beam, thereby allowing a sintering of the powder in the predetermined portion or a melting and subsequent solidification of the powder; and (ii) forming another solidified layer by forming a new powder layer on the formed solidified layer, followed by irradiation of a predetermined portion of the newly formed powder layer with the light beam, wherein the manufacturing method of the present invention, the three-dimensional shaped object is manufactured such that it has a flow path for cooling media in the three-dimensional shaped object, and also has a surface in a form of a concavity-convexity, and wherein a part of a contour surface of the flow path for the cooling media and the surface of the concavity-convexity have the same shape as each other.