METHOD FOR MANUFACTURING THREE-DIMENSIONAL MOLDED ARTICLE, THREE-DIMENSIONAL MOLDING APPARATUS, PROGRAM, RECORDING MEDIUM, AND DIE FOR RESIN MOLDING

To provide a method capable of controlling a nitridation degree in each portion to be molded, when a three-dimensional molded article containing a metal nitride is to be molded by laying a metal source powder into a layer and irradiating the layer with a laser beam to selectively solidify a part of the powder layer.SOLUTION: A method for manufacturing a three-dimensional molded article is provided, which includes repeatedly performing a powder layer formation step of depositing a metal powder to form a powder layer and a solidification step of irradiating a predetermined region of the powder layer with a laser beam to form a solidified portion. The solidification step performed during manufacturing the three-dimensional molded article includes a first solidification step and a second solidification step. In the second solidification step, a solidified portion having a larger nitridation degree than that of a solidified portion formed in the first solidification step is formed at a position different from that of the solidified portion formed in the first solidification step.SELECTED DRAWING: Figure 2 【課題】金属の原料粉末を層状に敷き、レーザ光を照射して粉末層の一部を選択的に固化させて金属の窒化物を含んだ三次元造形物を造形する際に、造形する部位毎の窒化度を制御可能な方法の提供。【解決手段】金属粉末を堆積させて粉末層を形成する粉末層形成工程と、前記粉末層の所定領域にレーザ光を照射して固化部を形成する固化工程と、を繰り返し行い三次元造形物を製造する方法において、前記三次元造形物を製造する間に行われる前記固化工程には、第１固化工程と第２固化工程が含まれ、前記第２固化工程においては、前記第１固化工程において形成される固化部とは異なる位置に、前記第１固化工程において形成される固化部よりも窒化度が大きい固化部を形成することを特徴とする三次元造形物の製造方法である。【選択図】図２