A method of additively manufacturing a three-dimensional object may be performed using an irradiation sequence that is based at least in part on a predicted location of one or more fume plumes emitted from the powder material when irradiated by a plurality of energy beams. An exemplary method may include determining, with a computing device, an irradiation sequence for selectively consolidating powder material using an energy beam system of an additive manufacturing machine, and providing control commands, from the computing device to the energy beam system, configured to cause the energy beam system to emit a plurality of energy beams to selectively consolidate the powder material.

A method of additively manufacturing a three-dimensional object may be performed using an irradiation sequence that is based at least in part on a predicted location of one or more fume plumes emitted from the powder material when irradiated by a plurality of energy beams. An exemplary method may include determining, with a computing device, an irradiation sequence for selectively consolidating powder material using an energy beam system of an additive manufacturing machine, and providing control commands, from the computing device to the energy beam system, configured to cause the energy beam system to emit a plurality of energy beams to selectively consolidate the powder material.

The invention aims to provide a contactless method to create small conductive tracks on a substrate. To this end a method is provided for selective material deposition, comprising depositing a first material on a substrate; followed by solidifying the first material selectively in a first solidified pattern by one or more energy beams; and followed by propelling non-solidified material away from the substrate by a large area photonic exposure, controlled in timing, energy and intensity to leave the solidified first pattern of the first material.

The invention aims to provide a contactless method to create small conductive tracks on a substrate. To this end a method is provided for selective material deposition, comprising depositing a first material on a substrate; followed by solidifying the first material selectively in a first solidified pattern by one or more energy beams; and followed by propelling non-solidified material away from the substrate by a large area photonic exposure, controlled in timing, energy and intensity to leave the solidified first pattern of the first material.

The present subject matter is directed towards a system and a method for selectively post-curing a three-dimensional (3D-printed) object to attain variable properties. The system comprises a selective post-curing chamber coupled to a computer in communication with a database for accessing a digital model or data concerning the 3D-printed object. The chamber comprises a movable light source assembly and a mounting platform for supporting at least one 3D-printed object thereon. The computer includes one or more executable instructions for selectively emitting a curing light onto the 3D-printed object along a predetermined curing toolpath based on the digital model. The curing of the 3D-printed object along the predetermined curing toolpath generates variable properties along different regions of the 3D-printed object.

The invention relates to a method for processing an optically reactive material, comprising: providing a starting material (3), which is optically reactive and fills a working volume (2); and optically processing the starting material (3) in the working volume (2) by means of irradiation of light of a first wavelength and of a second wavelength, wherein the light of the first wavelength and of the second wavelength is provided by a lighting device and at least one material property of the starting material is changed by means of the optical processing and the optical processing comprises the following: irradiating a first partial layer volume of the working volume (2) filled with the starting material (3) using the light of the first wavelength; irradiating the first partial layer volume of the working volume (2) using the light of the second wavelength, wherein the light of the second wavelength is projected into the working volume (2) by means of a projection device (7) capturing only the first partial layer volume wholly or partially; irradiating a second partial layer volume of the working volume (2) filled with the starting material (3), which is different from the first partial layer volume, using the light of the first wavelength; irradiating the second partial layer volume of the working volume (2) using the light of the second wavelength, wherein the light of the second wavelength is projected into the working volume (2) by means of the projection device (7) capturing only the second partial layer volume wholly or partially; and repeating the preceding steps for layer-by-layer optical processing of the starting material (3) in the working volume (2) until a volume of the starting material (3) to be processed, which captures the working volume (2) wholly or partially, is optically processed. Furthermore, a device for processing an optically reactive material is provided.

The invention relates to a method for processing an optically reactive material, comprising: providing a starting material (3), which is optically reactive and fills a working volume (2); and optically processing the starting material (3) in the working volume (2) by means of irradiation of light of a first wavelength and of a second wavelength, wherein the light of the first wavelength and of the second wavelength is provided by a lighting device and at least one material property of the starting material is changed by means of the optical processing and the optical processing comprises the following: irradiating a first partial layer volume of the working volume (2) filled with the starting material (3) using the light of the first wavelength; irradiating the first partial layer volume of the working volume (2) using the light of the second wavelength, wherein the light of the second wavelength is projected into the working volume (2) by means of a projection device (7) capturing only the first partial layer volume wholly or partially; irradiating a second partial layer volume of the working volume (2) filled with the starting material (3), which is different from the first partial layer volume, using the light of the first wavelength; irradiating the second partial layer volume of the working volume (2) using the light of the second wavelength, wherein the light of the second wavelength is projected into the working volume (2) by means of the projection device (7) capturing only the second partial layer volume wholly or partially; and repeating the preceding steps for layer-by-layer optical processing of the starting material (3) in the working volume (2) until a volume of the starting material (3) to be processed, which captures the working volume (2) wholly or partially, is optically processed. Furthermore, a device for processing an optically reactive material is provided.

A method for manufacturing a three-dimensional object by solidifying selected areas of consecutive powder layers is provided. At least one electron beam successively irradiates predetermined sections of each powder layer by moving an interaction region in which the electron beam interacts with the powder layer. Electromagnetic radiation from a radiation source is directed onto the powder layer to reduce local electrostatic charging in the interaction region. In this way, levitation and scattering of charged powder will be avoided.

A method for manufacturing a three-dimensional object by solidifying selected areas of consecutive powder layers is provided. At least one electron beam successively irradiates predetermined sections of each powder layer by moving an interaction region in which the electron beam interacts with the powder layer. Electromagnetic radiation from a radiation source is directed onto the powder layer to reduce local electrostatic charging in the interaction region. In this way, levitation and scattering of charged powder will be avoided.

A system and method of monitoring a powder-bed additive manufacturing process using a plurality of energy sources is provided. A layer of additive powder is deposited on a powder bed and is fused using a first energy source, a second energy source, or any other suitable number of energy sources. The electromagnetic energy emissions at a first melt pool are monitored by a melt pool monitoring system and recorded as raw emission signals. The melt pool monitoring system may also monitor emissions from the powder bed using off-axis sensors or from a second melt pool using on-axis sensors, and these emissions may be used to modify the raw emission signals to generate compensated emission signals. The compensated emission signals are analyzed to identify outlier emissions and an alert may be provided or a process adjustment may be made when outlier emissions exceed a predetermined signal threshold.