Abstract: An additive manufacturing device is provided with a beam irradiation unit irradiating a conductive powder disposed in a layered shape with a beam, a nondestructive inspection unit detecting a flaw in a surface layer of an additively manufactured article formed of the hardened conductive powder, and an energy control unit controlling energy of the beam. The energy control unit increases energy of a beam when a repairing region set in accordance with results of flaw detection by the nondestructive inspection unit is irradiated with the beam.

Abstract: A three-dimensional manufacturing apparatus includes a rotary drive unit that rotates a table around a rotation axis, a region setting unit that sets a plurality of divided regions obtained by dividing an irradiation region, a beam source that irradiates a powder material with an electron beam for each of the divided regions, and a rotation speed adjusting unit that adjusts a rotation speed of the table. An area per unit central angle of a first divided region is smaller than an area per unit central angle of a second divided region. The rotation speed adjusting unit performs adjustment so that a rotation speed of the table during a period of irradiating the first divided region with the energy beam becomes faster than a rotation speed of the table during a period of irradiating the second divided region with the energy beam.

Abstract: A three-dimensional fabrication device irradiates a powder material, which is disposed inside a chamber, with an electron beam to heat the powder material and to thus fabricate a three-dimensional object, and includes a beam emission unit that emits the electron beam to irradiate the powder material with the electron beam, a gas supply unit that supplies an inert gas into the chamber, and a heating unit that heats the inert gas to be supplied into the chamber.

Abstract: An additive manufacturing device is provided with a beam irradiation unit irradiating a conductive powder disposed in a layered shape with a beam, a nondestructive inspection unit detecting a flaw in a surface layer of an additively manufactured article formed of the hardened conductive powder, and an energy control unit controlling energy of the beam. The energy control unit increases energy of a beam when a repairing region set in accordance with results of flaw detection by the nondestructive inspection unit is irradiated with the beam.