Abstract: A device for the making of a three-dimensional object by means of layer by layer consolidation of a powderlike construction material by electromagnetic radiation or particle beam has a control unit that controls an irradiation device such that the powder particles of the construction material are bonded together at the sites where the radiation impinges on the construction material. A selective heating device is designed so that any given partial surface of the construction field can be heated before and/or after to a plateau temperature, which is significantly higher than the temperature of at least a portion of the construction field outside the partial surface. The control unit actuates the selective heating device such that the partial surface has a predefined minimum distance from the edge of the construction field.

Abstract: The invention describes a laser printing system (100) for illuminating an object moving relative to a laser module of the laser printing system (100) in a working plane (180), the laser module comprising at least two laser arrays of semiconductor lasers and at least one optical element, wherein the optical element is adapted to image laser light emitted by the laser arrays, such that laser light of semiconductor lasers of one laser array is imaged to one pixel in the working plane of the laser printing system, and wherein the laser printing system is a 3D printing system for additive manufacturing and wherein two, three, four or a multitude of laser modules (201, 202) are provided, which are arranged in columns (c1, c2) perpendicular to a direction of movement (250) of the object in the working plane (180), and wherein the columns are staggered with respect to each other such that a first laser module (201) of a first column of laser modules (c1) is adapted to illuminate a first area (y1) of the object and a

Abstract: Disclosed are an apparatus and method for densifying or compacting powder material in the supply bin of an additive manufacture machine to improve the quality of the object being made. For example, a removable or portable apparatus can be applied to the surface of the supply bin once the bin has been filled. The apparatus can include a vibrational component that agitates the underlying powder to compact the material. The apparatus can then be removed during the remainder of the additive manufacturing process, which then follows in its normal course. A vacuum can also be used the remove of air or other gases that are emitted during the compaction process, for example, as voids are filled during densification.

Abstract: A method for providing control data for a generative layer construction device has a first step of accessing a data record which, at least for a partial region of an object cross section, specifies in which temporal sequence an energy beam bundle is to be moved in scanning lines over the places of this partial region to scan the buildup material. In a second step, the data record is changed such that in at least one of the layers for the respective partial region of an object cross-section, a check is carried out to determine whether the scan time required to scan the buildup material along a scanning line falls below a predefined minimum duration tmin and either a lower energy density of the energy beam bundle during scanning of the buildup material along this scanning line is specified and/or a wait time is specified before the energy beam bundle is moved along a further scanning line.

Abstract: A flow device for an additive manufacturing device (1) for the production of a three-dimensional object (2) by layer-wise selective solidification of a building material in a build area (10) comprises: a process chamber (3), a gas supply device for generating a gas stream in the additive manufacturing device (1), at least one gas inlet (32, 43, 132, 232) for introducing the gas stream into the process chamber (3) and at least one gas outlet (34, 45) for directing the gas stream out of the process chamber (3), and a gas supply line (30), which is provided outside the process chamber (3), in order to conduct gas to the at least one gas inlet (32, 43, 132, 232), the gas supply line (30) comprising at least a first line section (31, 41) which adjoins the gas inlet (32, 43, 132, 232) and which extends a length (L) along a first extension direction of the gas supply line (30), the first extension direction being substantially straight, and wherein the first line section (31, 41) extends a maximum value of a width (

Abstract: Described are a method and a control data generation device (54, 54?) for use therein for generating control data (PSD) for a device (1) for the additive manufacture of a manufacturing product (2) in a manufacturing process, in which build-up material (13) is built up and selectively solidified, wherein, for the solidification process, the build-up material (13) is irradiated with at least one energy beam (AL) on a build field (8), and an area of incidence (AF) of the energy beam (AL) on the build field (8) is moved in order to melt the build-up material (13).

Abstract: Plastic powder for use as a building material for manufacturing a three-dimensional object by layer-by-layer melting and solidification by hardening of the building material at the positions corresponding to the cross-section of the three-dimensional object in the respective layer by exposure to radiation, preferably by exposure to NIR radiation, wherein the plastic powder comprises a dry blend of polymer-based particles and particles of a NIR absorber, wherein the NIR absorber comprises carbon black or is carbon black and wherein the weight percentage of carbon black in the total weight of polymer and carbon black particles is in the range of at least 0.02% and at most 0.45%, and/or wherein the carbon black has a mean primary particle diameter in the range of from 15 nm to 70 nm, preferably of at least 26 nm and/or at most 58 nm.

Abstract: Plastic powder for use as building material for additively manufacturing a three-dimensional object by selectively solidifying the building material at the positions corresponding to the cross-section of the three-dimensional object in the respective layer, in particular by exposure to radiation, wherein the plastic powder comprises a mixture of polymer-based particles and particles of a particulate additive and wherein the particulate additive is selected such that the crystallization point of the mixture of the polymer-based particles and the particulate additive is substantially not increased compared to the crystallization point of a mixture of the polymer-based particles without the particulate additive.

Abstract: A method for providing control commands for producing a number of three-dimensional objects by an additive layer-wise building device. The method can include a step of providing a computer-based model of the number of objects that geometrically describes the objects, a step of modifying the computer-based model such that for the geometric description of the number of objects a location is defined as a common origin of coordinates, and a step of generating control commands for a set of control commands for controlling the production of the number of objects by the additive layer-wise building device on the basis of the modified computer-based model.

Abstract: A method and an irradiation device (20), usable to this end, for irradiating a material (13) with at least one energy beam (AL), in particular for locally melting the material (13), are described, wherein an area of incidence (AF) of the energy beam (AL) on the material (13) is moved. In the process, at least one first energy beam (EL1) and one second energy beam (EL2) are generated, the second energy beam (EL2) is moved relative to the first energy beam (EL1) and the first energy beam (EL1) and the second energy beam (EL2) are coupled in a common beam path (SA) into an energy beam movement unit (23) in such a way that they are moved together over the material (13) as a combination energy beam (AL). Furthermore, a method and a device (1) for the additive manufacture of manufacturing products (2) are described.

Abstract: Disclosed is a method for generating an irradiation control data set for creating control data for a device for additive manufacturing of a number of components in a manufacturing process in which at least one layer of a build material is introduced into a process space and the build material of the layer is selectively solidified to form at least one component layer by irradiating at least one section of the layer using a plurality of irradiation resources, wherein layer data are divided into a plurality of work packages, these work packages are put in an order and an irradiation resource is selected taking into account an execution time determined for the irradiation resource to which one of the work packages is assigned taking into account a specified set of evaluation rules, and this is repeated until to a predetermined termination criterion is reached.

Abstract: A device includes a recoater that can be moved in an application direction across a build area, the recoater having at least a first recoating unit for applying a layer of the building material to the build area and a solidification device that can be moved in the application direction across the build area, the solidification device having at least a first solidification unit for selectively solidifying the applied layer of the building material at positions that correspond to a cross-section of the object to be produced. The device can repeat the steps of applying and selectively solidifying until the object is completed. The recoater includes at least a second recoating unit that is arranged at the other side of the first solidification unit than the first recoating unit with respect to the application direction.

Abstract: Disclosed is a manufacturing device for the additive manufacturing of a three-dimensional object, wherein the object is manufactured by applying a building material layer by layer and selective solidification of the building material, at points in each layer which are assigned in this layer to the cross-section of the object. The points are scanned with at least one exposure area. The movable gas outlet is assigned during operation to a reference process point and/or a target flow supply zone of the movable gas outlet assigned to the reference process point for the flow supply with the process gas and/or the target ventilation zone of the movable gas outlet.

Abstract: A recoating unit for equipping and/or retrofitting a device for producing a three-dimensional object by means of selectively solidifying, layer by layer, of a building material in powder form. The recoating unit is configured, depending on its movement in the first direction or in its opposite direction, to receive building material in that chamber that is the trailing chamber in the respective direction of movement and to spread the building material received in the respective trailing chamber to a uniform layer by means of the respective trailing recoating element.

Abstract: The invention relates to a computer-assisted method for examining an input data set of a generative layer building device, including comparing at least one parameter value in a computer-based model of an object that is to be produced using the generative layer building device, to a limiting parameter value which is an extreme value for the parameter able to be obtained in a method for producing the object, and particularly an extreme value for the parameter that can be obtained in a process-stable manner.

Abstract: Disclosed is a method of determining a quality indicator of an object that has been manufactured by layer-wise additive manufacturing. The method includes providing a first dataset that is assigned to a process monitoring device, detecting a relative frequency of occurrence of a process irregularity in a layer and of assigning a grade indicator value to the solidified object cross-section in a layer according to the detected relative frequency, generating a second dataset, in which a grade indicator value is assigned to the object cross-section in each of said several layers following upon one another, and determining a quality indicator by using the second dataset (or several further datasets).

Abstract: An additive manufacturing apparatus for manufacturing a three-dimensional object comprises a layer application device (16) for applying a building material layer by layer, an energy input unit (20) which comprises a carbon monoxide laser (21) and a radiation supply unit for supplying laser radiation of the carbon monoxide laser to positions in each layer that are assigned to the cross-section of the object in this layer, and a laser power modification device (27) adapted to effect an increase of the power per unit area incident on the building material within a time period that is smaller than 300 ?s and/or larger than 50 ns, when the laser power is increased and/or to effect a reduction of the power per unit area incident on the building material within a time period that is smaller than 100 ?m and/or larger than 100 ns, when the laser power is decreased.

Abstract: A method for providing control data for a generative layer construction device includes accessing layer data records that have data models of buildup material layers to be selectively solidified, where a base surface region of an object cross section exists in at least one layer data record, where in at least one of p layers below the base surface region, no solidification of buildup material is specified. The method further includes changing the layer data record such that a temporal sequence for scanning the associated object cross section with energy radiation is specified such that at least one portion of the base surface region is scanned before all other parts of the object cross section; and a third step, where the changed layer data record is provided for the generation of a control data record for the device.

Abstract: A method of manufacturing a three-dimensional object by a layer-by-layer application and selective solidification of a building material by exposure to a radiation. A hollow body is arranged in a process chamber above a build area which hollow body substantially extends from the build area in a direction of an upper side of the wall of the process chamber. Gas is supplied to the process chamber in such a manner and gas is discharged from the process chamber in such a manner that a lower pressure exists in the region of the process chamber lying within the hollow body than in the region of the process chamber lying outside the hollow body.

Abstract: The invention relates to a computer-assisted method for examining an input data set of a generative layer building device, comprising at least the following step: —comparing at least one parameter value in a computer-based model of an object that is to be produced using said generative layer building device, to a limiting parameter value which is an extreme value for the parameter able to be obtained in a method for producing the object, and particularly an extreme value for the parameter that can be obtained in a process-stable manner.