A lamination molding apparatus includes a chamber that covers a molding region, an irradiator that irradiates a material layer formed in the molding region with a laser beam or an electron beam and forms a solidified layer, a supply port that supplies an inert gas to the chamber, a discharge port that discharges the inert gas from the chamber, an inert gas supplier which is connected to the supply port and supplies the inert gas to the chamber, a fume collector, and an oxygen concentration adjustor. The fume collector has an inlet, a charging section, a collecting section, and an outlet. The oxygen concentration adjustor is connected between the discharge port and the charging section and supplies, to the fume collector, an adjusting gas having an oxygen concentration higher than an oxygen concentration of the inert gas which is discharged from the discharge port.

An additive manufactured part is formed as a solid body of material including additive manufacturing powder, binder material supporting the powder in the shape of the solid body, and strengthening resin infused within the solid body. The additive manufacturing powder can be sand. The infused resin can be a two-part resin wherein an inert gas is added to the mixture of the two parts of the two-part resin during mixing. The infused resin can be infused inwardly from the peripheral surface of the solid body and can penetrate partially or fully through the thickness of the solid body.

Disclosed embodiments relate to recoater systems for use with additive manufacturing systems. A recoater assembly may be adjustable along multiple degrees of freedom relative to a build surface, which may allow for adjustment of a spacing between the recoater assembly and the build surface and/or an orientation of the recoater assembly relative to an orientation of the build surface. In some embodiments, the recoater assembly may be supported by four support columns extending above the build surface, and attachments between the recoater assembly and the support columns may be independently adjustable to adjust the recoater relative to the build surface.

Build material handling unit (2) for a powder module (3) for an apparatus for additively manufacturing three-dimensional objects, which apparatus is adapted to successively layerwise selectively irradiate and consolidate layers of a build material (4) which can be consolidated by means of an energy source, wherein the build material handling unit (2) is coupled or can be coupled with a powder module (3), wherein the build material handling unit (2) is adapted to level and/or compact a volume of build material (4) arranged inside a powder chamber (5) of the powder module (3) by controlling the gas pressure inside the powder chamber (5).

Apparatus (1) for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam, with a stream generating unit (2) configured to generate a stream of a process gas (3) being capable of being charged with particles (4), in particular non-consolidated particulate build material and/or smoke and/or smoke residues, generated during operation of the apparatus (1) and a filter unit (5) configured to separate particles (4) from the stream of process gas (3), wherein the filter unit (5) comprises a filter chamber (6) with at least one filter element (7) at least partly arranged in the streaming path of the generated stream of process gas (3), wherein particles (4) in the stream of process gas (3) are separated from the process gas (3) by the filter element (7), wherein a particle reception chamber (13, 26, 28) is separably connected or connectable to a particle outlet (11) of the filter chamber (6) and configured to receive the particles (4) separated from the process gas (3).

Apparatus (1) for additively manufacturing of three-dimensional objects by means of successive layerwise selective irradiation and consolidation of layers of a build material which can be consolidated by means of an energy beam, with a stream generating unit (2) configured to generate a stream of a process gas (3) being capable of being charged with particles (4), in particular non-consolidated particulate build material and/or smoke and/or smoke residues, generated during operation of the apparatus (1) and a filter unit (5) configured to separate particles (4) from the stream of process gas (3), wherein the filter unit (5) comprises a filter chamber (6) with at least one filter element (7) at least partly arranged in the streaming path of the generated stream of process gas (3), wherein particles (4) in the stream of process gas (3) are separated from the process gas (3) by the filter element (7), wherein a particle reception chamber (13, 26, 28) is separably connected or connectable to a particle outlet (11) of the filter chamber (6) and configured to receive the particles (4) separated from the process gas (3).

A process chamber housing for an additive manufacturing apparatus comprising a process chamber with a bottom, a ceiling, and sidewalls jointly enclosing a volume of the process chamber, with a gas inlet in a front wall and a gas outlet in a rear wall of the sidewalls. The gas inlet and outlet are positioned at opposite sides of an opening in the bottom and face each other, which allows for an improved removal of smoke out of the process chamber if the gas inlet has a width w.sub.i, the opening has a width w.sub.s, and the gas outlet has a width w.sub.0, such that at least one of the relations (i) w.sub.i≥w.sub.s±4 cm and w.sub.o≥w.sub.s±4 cm; (ii) w.sub.i≥w.sub.s and/or w.sub.o≥w.sub.s; and (iii) w.sub.i≥w.sub.s+1 cm and/or w.sub.o≥w.sub.s+1 cm is satisfied.

This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

A container arrangement of an unpacking device for a manufacturing device for additive manufacturing of a three-dimensional component is provided. The container arrangement includes a construction container with a construction chamber, and a collecting container that is releasably connected to the construction container and has a collecting chamber. The construction container has a container cover that, in the closed state, seals off the construction chamber and an inert atmosphere located therein from the surroundings. A collecting-container-side part of an interior of the container arrangement is provided inside the container arrangement. The container arrangement further includes an opening device that can be used, with the collecting-container-side part of the interior of the container arrangement being filled with an inert atmosphere, to open the closed container cover of the construction container and thereby to connect the construction chamber of the construction container to the collecting chamber of the collecting container.