Additive manufacturing device and additive manufacturing method

An additive manufacturing device performing manufacturing of an additively manufactured article by supplying a powder material to an irradiation region of a charged particle beam, laying and leveling the powder material, irradiating the powder material with the charged particle beam, and melting the powder material, the additive manufacturing device comprising:

• a beam emitting unit emitting the charged particle beam and irradiating the powder material with the charged particle beam;
• a scattering detection unit detecting that the powder material has scattered by irradiating the powder material with the charged particle beam;
• a heating unit heating the irradiation region;
• and
• a powder supply unit supplying the powder material to the irradiation region of the charged particle beam;
• and
• a controller determining whether or not scattering of the powder material has occurred based on a detection signal from the scattering detection unit, and outputting at least one control signal to the beam emitting unit, the heating unit, and the powder supply unit, wherein
• the controller is configured to cause
• in response to receiving the detection signal from the scattering detection unit, an operation to determine whether the powder material has scattered based on the detection signal,
• on a condition that the controller detects that the scattering of the powder material has occurred, an operation to stop an irradiation of the charged particle beam by outputting the at least one control signal to the beam emitting unit is performed,
• after the operation to stop the irradiation of the charged particle beam, an operation to heat the irradiation region, at which the scattering of the powder material has occurred, by outputting the at least one control signal to the heating unit, and
• after the operation to heat the irradiation region, an operation to supply a new powder material to the irradiation region of the charged particle beam and leveling out a surface of the new powder material by outputting the at least one control signal to the powder supply unit.