METHOD FOR PRODUCING THREE-DIMENSIONALLY SHAPED MOULDED ARTICLE, AND THREE-DIMENSIONALLY SHAPED MOULDED ARTICLE

摘要

The purpose of the present invention is to provide a method for producing a three-dimensionally shaped moulded article exhibiting more suitable heat removal properties as a die. The present invention provides a method for producing a three-dimensionally shaped moulded article, wherein a step (i) in which a prescribed portion of a powder layer is irradiated with a light beam to sinter or melt and harden the powder in the prescribed portion, and form a hardened layer, and a step (ii) in which a new powder layer is formed on the resultant hardened layer, and a prescribed portion of the new powder layer is irradiated with a light beam to form an additional hardened layer, are performed to alternately and repeatedly form powder layers and hardened layers. Notably, in this production method, a cooling medium passage is formed inside the three-dimensionally shaped moulded article, the surface of the three-dimensionally shaped moulded article is formed so as to be uneven, and the uneven surface and a portion of the contour surface of the cooling medium passage are made to have the same shape as each other.