Build receptacles for additive manufacturing apparatuses are disclosed. The build receptacle may comprise a housing comprising a sidewall at least partially enclosing a build chamber. A build platform may be positioned within the build chamber. A position of the build platform may be slidably adjustable within the build chamber in a vertical direction from a lower position to one of a plurality of upper positions and from the one of the plurality of upper positions to the lower position. The build receptacle may further comprise a plurality of heating elements disposed around the build chamber.

Additive manufacturing apparatuses are disclosed. In one embodiment, an additive manufacturing apparatus may comprise a support chassis including a print bay, a build bay, and a material supply bay. Each bay may comprise an upper compartment and a lower compartment. A working surface may separate each of the print bay, the build bay, and the material supply bay into the upper compartment and the lower compartment, wherein: the build bay may be disposed between the print bay and the material supply bay. The lower compartment of the build bay comprises bulkheads sealing the lower compartment of the build bay from the lower compartment of the print bay and the lower compartment of the material supply bay.

The invention relates to a pump arrangement (1) with at least one temperature-controllable housing part, wherein at least one temperature-controllable housing part (3) comprises a first wall (27) that is in contact with the temperature-controllable medium and a second wall (28) that is at a distance from the first wall (27). The first wall (27) and the second wall (28) form a temperature control chamber (29).

According to examples, an apparatus may include a build platform and a chamber. The chamber may support a layer forming station including a spreading component to spread a layer of build material particles onto the build platform and an agent delivery component to apply fusing agent onto selected locations on the spread layer of build material particles and a heating station including a heating component to apply energy onto the spread layer of build material particles and the applied fusing agent, in which the heating station is separated from the layer forming station. The apparatus may also include an actuator to move the chamber with respect to the build platform or vice versa while maintaining the separation between the layer forming station and the heating station.

A flow meter includes a pair of ultrasonic transducers. Each transducer includes a housing, a piezoelectric crystal disposed within the housing, and a mini-horn array coupled to the housing. The mini-horn array, which may be formed via a 3D printing technique, includes an opening-free enclosure, a closed cavity inside the enclosure, and a plurality of horns enclosed within the closed cavity. The horns include a horn base portion adjacent to a proximal end surface of the cavity and a horn neck portion that extends from the base portion in a direction away from the piezoelectric crystal and towards a distal end surface of the cavity. The horn neck portions are separated by spaces within the cavity, wherein the spaces between the horn necks may be filled with powder.

Additive manufacturing systems and methods are provided. An additive manufacturing system includes a build volume; a powder disposed in the build volume, the powder occupying at least a portion of the build volume and having an outer boundary; a beam generator configured to generate a beam to irradiate the powder; and a ram defining a passthrough configured to transmit the beam to an irradiation location disposed within the outer boundary of the powder.

Additive manufacturing systems and methods are provided. An additive manufacturing system includes a build volume; a powder disposed in the build volume, the powder occupying at least a portion of the build volume and having an outer boundary; a beam generator configured to generate a beam to irradiate the powder; and a ram defining a passthrough configured to transmit the beam to an irradiation location disposed within the outer boundary of the powder.

The present disclosure provides three-dimensional (3D) printing systems, apparatuses, software, and methods for safe production of at least one requested 3D object, and for passivation of material accumulated on a filter of the 3D printing system.

The present disclosure provides three-dimensional (3D) printing systems, apparatuses, software, and methods for safe production of at least one requested 3D object, and for passivation of material accumulated on a filter of the 3D printing system.

Arrangement (10) for the powder-bed-based additive manufacturing of a component (100), wherein the arrangement (10) comprises the following: a housing (12), which comprises a building volume (14), wherein the building volume (14) comprises a building area (16); at least three marker devices (20), which are fastened in or on the housing (12), wherein each marker device (20) is suitable for projecting a light reference marking (22) onto a component (100) lying on the building area (16) and/or onto the building area (16); a laser device (30) for the laser processing of a powder bed for generating a component (100) on the building area (16) by means of additive manufacturing, wherein the laser device (30) is set up for the laser processing of an associated working area (32a-32d), wherein the laser device (30) comprises a detection device (34), which is set up to sense the light reference markings (22); and a control unit (40), which is set up to calibrate the laser device (30) on the basis of the light reference markings (22) sensed by the detection device (34).