Abstract: An additive manufacturing device comprises a lower nozzle that blows out inert gas into a chamber in a horizontal direction through a lower opening portion formed in a lower part of a first side wall constituting the chamber, and an upper nozzle that blows out the inert gas into the chamber through an upper opening portion formed in an upper part of the first side wall, wherein the upper nozzle includes a window nozzle that blows out the inert gas along an inner surface of a window portion of a top board constituting the chamber, and an oblique nozzle that blows out the inert gas obliquely downward from the upper portion of the first side wall.

Abstract: An additive manufacturing nozzles includes a header (41) extending in a width direction of the chamber and which is configured to be supplied with inert gas from the outside, and a nozzle body (43) connecting with the header (41) in the width direction and is configured to horizontally blow out the inert gas, which is supplied from the header, to a molding area. The nozzle body has a honeycomb part (52) which defines an inside of the nozzle body into flow channels through which the inert gas flows, a blowout part (55) disposed downstream of the honeycomb part and which is connected with the honeycomb part in the width direction. The inert gas passed through the plurality of flow channels is led from the honeycomb part to the blowout part, and a porous part (54), which has openings, is disposed between the honeycomb part and the blowout part.

Abstract: An additive manufacturing device comprises a lower nozzle that blows out inert gas into a chamber in a horizontal direction through a lower opening portion formed in a lower part of a first side wall constituting the chamber, and an upper nozzle that blows out the inert gas into the chamber through an upper opening portion formed in an upper part of the first side wall, wherein the upper nozzle includes a window nozzle that blows out the inert gas along an inner surface of a window portion of a top board constituting the chamber, and an oblique nozzle that blows out the inert gas obliquely downward from the upper portion of the first side wall.

Abstract: A plasma thermal spray device includes a nozzle body (41) having a main flow passage (48) that has a plasma flame (37) formed therein in a direction toward a downstream side from an upstream end (41A) disposed on one side in an axis direction, and extending along an axis (Ax); a powder introduction port (43) that is provided in a portion of the nozzle body (41) located the downstream side from the upstream end (41A) and introduces thermal spray powder (36) from a radially outer side to the plasma flame (37); and a fluid introduction port (45) that is provided at a position closer to the downstream side than a formation position of the powder introduction port (43) in the nozzle body (41) and introduces a working fluid into the main flow passage (48) from the radially outer side of the nozzle body (41).

Abstract: An additive manufacturing nozzles includes a header (41) extending in a width direction of the chamber and which is configured to be supplied with inert gas from the outside, and a nozzle body (43) connecting with the header (41) in the width direction and is configured to horizontally blow out the inert gas, which is supplied from the header, to a molding area. The nozzle body has a honeycomb part (52) which defines an inside of the nozzle body into flow channels through which the inert gas flows, a blowout part (55) disposed downstream of the honeycomb part and which is connected with the honeycomb part in the width direction. The inert gas passed through the plurality of flow channels is led from the honeycomb part to the blowout part, and a porous part (54), which has openings, is disposed between the honeycomb part and the blowout part.