A three-dimensional manufacturing apparatus and a three-dimensional manufacturing method easily adjust a heating quantity per unit area individually for a solidified region and a non-solidified region of a powder material. A layer formation unit forms a layer of a powder material. Light sources and heat scanning units heat the layer by laser beams. The laser beam heats a solidified region in which the powder material has been fused and solidified. The laser beam heats the non-solidified region of the powder material, which is adjacent to the solidified region. The controlling section controls the light sources and the heat scanning units so as to move the laser beams along a boundary between the solidified region and the non-solidified region, and to fuse and solidify a manufacturing region of the layer.

A three-dimensional manufacturing apparatus and a three-dimensional manufacturing method easily adjust a heating quantity per unit area individually for a solidified region and a non-solidified region of a powder material. A layer formation unit forms a layer of a powder material. Light sources and heat scanning units heat the layer by laser beams. The laser beam heats a solidified region in which the powder material has been fused and solidified. The laser beam heats the non-solidified region of the powder material, which is adjacent to the solidified region. The controlling section controls the light sources and the heat scanning units so as to move the laser beams along a boundary between the solidified region and the non-solidified region, and to fuse and solidify a manufacturing region of the layer.

A post-build powder removal system includes a work bed, a platform wall having at least one powder evacuation port, and an evacuation port sealing system operable for selectively closing and opening the powder evacuation port. The platform wall cooperates with the work bed to define a powder chamber. The evacuation port sealing system includes an external sleeve slidingly fitted onto the exterior surface of the platform wall such that the external sleeve is slideable in a first direction closing the at least one powder evacuation port and slideable in an opposite second direction opening the at least one powder evacuation port.

A post-build powder removal system includes a work bed, a platform wall having at least one powder evacuation port, and an evacuation port sealing system operable for selectively closing and opening the powder evacuation port. The platform wall cooperates with the work bed to define a powder chamber. The evacuation port sealing system includes an external sleeve slidingly fitted onto the exterior surface of the platform wall such that the external sleeve is slideable in a first direction closing the at least one powder evacuation port and slideable in an opposite second direction opening the at least one powder evacuation port.

A post-build powder removal system includes a work bed, a platform wall having at least one powder evacuation port, and an evacuation port sealing system operable for selectively closing and opening the powder evacuation port. The platform wall cooperates with the work bed to define a powder chamber. The evacuation port sealing system includes an external sleeve slidingly fitted onto the exterior surface of the platform wall such that the external sleeve is slideable in a first direction closing the at least one powder evacuation port and slideable in an opposite second direction opening the at least one powder evacuation port.

A post-build powder removal system includes a work bed, a platform wall having at least one powder evacuation port, and an evacuation port sealing system operable for selectively closing and opening the powder evacuation port. The platform wall cooperates with the work bed to define a powder chamber. The evacuation port sealing system includes an external sleeve slidingly fitted onto the exterior surface of the platform wall such that the external sleeve is slideable in a first direction closing the at least one powder evacuation port and slideable in an opposite second direction opening the at least one powder evacuation port.

An apparatus for the generative production of a three-dimensional object by successive, selective layer-by-layer solidification of construction material layers of a solidifiable construction material by means of at least one energy beam, comprising at least one device for generating at least one energy beam for selective layer-by-layer solidification of individual construction material layers of a solidifiable construction material, wherein the device is configured to generate an energy beam directed directly onto a construction plane, and an exhaust device which is configured to exhaust non-solidified construction material detached from the construction plane during processing and/or process gases arising during processing, wherein the exhaust device comprises at least one exhaust element through which a suction flow may or does flow, wherein at least one passage opening is formed in the at least one exhaust element for passage of an energy beam generated by the device and directed directly onto the construction plane.

An apparatus for the generative production of a three-dimensional object by successive, selective layer-by-layer solidification of construction material layers of a solidifiable construction material by means of at least one energy beam, comprising at least one device for generating at least one energy beam for selective layer-by-layer solidification of individual construction material layers of a solidifiable construction material, wherein the device is configured to generate an energy beam directed directly onto a construction plane, and an exhaust device which is configured to exhaust non-solidified construction material detached from the construction plane during processing and/or process gases arising during processing, wherein the exhaust device comprises at least one exhaust element through which a suction flow may or does flow, wherein at least one passage opening is formed in the at least one exhaust element for passage of an energy beam generated by the device and directed directly onto the construction plane.

Apparatus (1) for additively manufacturing three-dimensional objects (2) by successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), the apparatus (1) comprising: a process chamber (8) comprising a build plane (7) in which layers of build material (3) are successively layerwise selectively irradiated and consolidated by means of an energy beam (4) during operation of the apparatus (1); a gas stream generating device (9) configured to generate a gas stream at least partly streaming through the process chamber (8) during operation of the apparatus (1), the gas stream being capable of being charged with non-consolidated build material particles (25); and an optical determining device (12) configured to optically determine at least one parameter suitable for characterizing the streaming properties of the gas stream streaming through the process chamber (8).

Apparatus (1) for additively manufacturing three-dimensional objects (2) by successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy beam (4), the apparatus (1) comprising: a process chamber (8) comprising a build plane (7) in which layers of build material (3) are successively layerwise selectively irradiated and consolidated by means of an energy beam (4) during operation of the apparatus (1); a gas stream generating device (9) configured to generate a gas stream at least partly streaming through the process chamber (8) during operation of the apparatus (1), the gas stream being capable of being charged with non-consolidated build material particles (25); and an optical determining device (12) configured to optically determine at least one parameter suitable for characterizing the streaming properties of the gas stream streaming through the process chamber (8).