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 is a method for providing control data for an additive manufacturing device. The method includes accessing computer-based model data of a section of the object to be manufactured, defining a first portion and an adjoining second portion within the object section, and producing a data model of a region of a layer of the object section. Within the region a first portion cross-section cuts through the first portion and a second portion cross-section cuts through the second portion. An energy input parameter in the data model has, on average, a different value in the first portion cross-section than in the second portion cross-section and the energy beam is moved over the boundary of the first and second portion. Control data corresponding to the data model is provided for the generation of a control data set for the additive manufacturing device.

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 providing a particulate material from an at least substantially metallic and/or ceramic starting material, comprising the following steps: (a) generating the particulate material from the starting material by vaporizing the starting material by introducing energy, preferably radiation energy, in particular by means of at least one laser, into the starting material and subsequently at least partially condensing the vaporized starting material, b) collecting the particulate material in at least one receiving and/or transporting device, in particular at least one container, c) receiving, in particular storing, and/or transporting the particulate material in the receiving and/or transporting device and/or in a further receiving and/or transporting device such that it can be used for a subsequent process, in particular in a state of at least non-permanent passivation, and d) providing the particulate material for the subsequent process.

Abstract: A lifting system serves for use in a manufacturing device for generatively manufacturing a three-dimensional object by layerwise application and selective solidification of a building material. The manufacturing device includes building base on which the object is to be built upon a building surface. The lifting system includes a holding device suitable for holding and height-adjusting the building base. In a position corresponding to an operating state within the manufacturing device, the holding device is arranged in such a way that the building base is attached to the underside of the holding device so that the building surface faces towards the holding device.

Abstract: Disclosed is a method for providing a control command set for an additive manufacturing device. The method includes providing a parameter set consisting of a number of parameters, and a construction rule, which is suitable for describing at least one section of the object by the parameter set geometrically as a number of linear or flat elements in space; generating a computer-based layer model of the section of the object by determining, for each layer, the position and shape of a cross-section of the section of the object within the layer, generating a control command set for an additive manufacturing device by which the production of the section of the object is implemented on the basis of the layer model.

Abstract: The invention relates to a method for generating control data for a device for additively manufacturing a component in a manufacturing process, in which method the energy beam is moved along a number of solidification paths across the construction field, and operation takes place at least temporarily in a toothing mode in which, when the energy beam is being moved across the construction field, a location-dependent desired welding-in depth of the energy beam is switched over at a plurality of switchover points which are randomly distributed over at least one defined region of a cross-section of the component in the layer in question.

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: A calibration method includes positioning the coating unit in a first measuring position and detecting a first position reference value with respect to the reference point and a first measuring point associated with the coating unit at the first measuring position, positioning the coating unit in a second measuring position by moving the coating unit in the direction of movement and detecting a second position reference value with respect to the reference point and a second measuring point associated with the coating unit at the second measuring position, and determining a correction value for the first application element and/or the second application element from the detected first position reference value and the detected second position reference value.

Abstract: A method for post-treating a three-dimensional object produced by selectively solidifying, layer by layer, of a building material in powder form and/or post-treating unsolidified building material in which the three-dimensional object is embedded. The three-dimensional object and/or the unsolidified building material may be treated with a liquid. The liquid may comprises a liquid carrier substance and at least one further substance that reduces surface tension of the carrier substance.

Abstract: Disclosed is a filter system for an additive manufacturing device for purifying a process gas of the additive manufacturing device wherein, in order to purify a volume of process gas during operation, the filter system has at least one permanent filter. The permanent filter is configured so as to be thermally stable in a manner such that during operation, the permanent filter is stable at a temperature of more than 110° C. Further disclosed is an additive manufacturing device as well as an additive manufacturing process.

Abstract: A process for producing a three-dimensional object by selectively layer-by-layer solidification of a powdery material layer at the locations corresponding to the cross-section of the object in a respective layer by exposure to electromagnetic radiation. The powdery material comprises at least one polymer which is obtainable from its melt only in substantially amorphous or completely amorphous form, or a polyblend which is obtainable from its melt only in substantially amorphous or completely amorphous form. The powdery material has a specific melting enthalpy of at least 1 J/g.

Abstract: An additive manufacturing method including repeatedly applying a layer of building material on a previously selectively solidified building material layer and scanning the layer at positions corresponding to the cross-section of the object in this layer, where the laser radiation is generated by a laser light source and is directed onto the building material layer via optical components. An optics compartment is encased by an optics compartment housing and accommodates the optical components. A defined gas atmosphere is maintained inside of the optics compartment, wherein the relative humidity of the defined gas atmosphere is kept below 3%.

Abstract: A device for an adjustment of a heater control includes a nominal parameter provision unit designed such that it provides at least one nominal parameter value, an actual parameter detection unit designed such that it is able to detect for at least one of the nominal parameter values the corresponding actual parameter value in a heater control or in an additive manufacturing device, wherein an actual parameter value is the actual value of a controlled variable and/or the actual value of its change with time and/or the actual value of a heater parameter and/or the actual value of its change with time, and a control change unit that automatically changes at least one control parameter value, if a predefined difference between the nominal parameter value and its corresponding actual parameter value is exceeded.

Abstract: A mixing device serves for producing a powder mixture of a first powder component and at least one second powder component for an additive manufacturing device. The mixing device includes a first container for receiving the first and/or the second powder component, where a discharge opening for discharging the first and/or the second powder component is provided at a lower boundary of the first container, and a second container for receiving the first and/or the second powder component. The second container is designed to be at least partially open towards an upper side. The first and second container each include at least one fluidization zone for introducing a gas into the first and second container. The mixing device further includes a powder conduit that connects to the discharge opening of the first container and is guided into the second container.

Abstract: The present invention relates to a composition comprising at least one polymer system and at least one anti-agglomeration agent, the polymer system being selected from at least one thermoplastic polymer, the bulk density of the composition being more than 300 g/l. Furthermore, the present invention relates to a method for producing the composition according to the invention and its use.

Abstract: An apparatus for manufacturing a three-dimensional object by a layer-by-layer solidification of building material at the points corresponding to the cross-section of the object to be manufactured in a respective layer. The apparatus includes a process chamber in which the object is to be built up layer by layer by selectively solidifying layers of a building material in a build area, a gas supply device, and a recirculating air filter device, wherein the apparatus comprises a pressure stabilization device configured to keep the pressure in the process chamber substantially constant.

Abstract: A passivation device for passivating filter residues of a filter device arranged in a process gas circuit of an additive manufacturing apparatus includes a reaction unit having an inlet suitable for supplying an oxidant, a coupling unit adapted to be coupled to the filter device for introducing filter residues into the reaction unit, a discharge unit suitable for discharging passivated filter residues from the reaction unit, and an energy supply unit suitable for effecting a reaction between the filter residues and the oxidant in the reaction unit.

Abstract: The present invention concerns nickel alloys in powder form comprising at least 40 wt.-% Ni, about 20.0 to 25.0 wt.-% Cr, about 5.0 to 25.0 wt.-% Co and about 1.5 to 5.0 wt.-% Ti, which have a content of B in an amount of less than 40 ppmw. Corresponding alloys have the advantage of providing minimal or no micro-cracks as well as an improved ductility in creep conditions compared to similar alloys having a higher content of B, when the alloys are processed by additive manufacturing to prepare three-dimensional objects. The present invention further concerns processes and devices for the preparation of three-dimensional objects from such nickel alloy powders, processes for the preparation of corresponding nickel alloy powders, three-dimensional objects which are prepared from such nickel alloy powders and the use of such nickel alloy powders to minimize and/or suppress micro-crack formation and/or to provide improved creep ductility.

Abstract: A method for making a three-dimensional object by means of layer-wise application and selective solidification of a pulverulent building material The method includes applying a layer of the pulverulent building material onto a build area by an application device The application device includes a recoating unit movable across the build area in an application direction. The method further includes solidification of the applied powder layer at positions corresponding to a cross-section of the object to be made, and repeating the steps of applying and selective solidification until the object is completed. The pulverulent building material to be applied onto the build area is heated locally by a radiant heater before being applied.