Slm Solutions Group Ag

Nikon Slm Solutions Ag

Slm Solutions Gmbh

Dieter Schwarze

Toni Adam Krol

Andreas Wiesner

Henner Schoeneborn

Jan Wilkes

Daniel Alberts

Christiane Thiel

Lukas Roesgen

Bodo Haack

Eduard Gieser

Karsten Huebinger

André Hermann

Christopher Stengel

Arne Neef

Jiachun Chen

Thomas Niendorf

Florian Brenne

Mirko Schaper

Daniel Brueck

Guido Grundmeier

Birk Hoppe

Andreas Hoppe

Naveed Iqbal

Andre Riemer

Benno Haupt

Simon Steven

Felix Mutz

Ann-Kathrin Otte

Kim Kulling

Hans Jürgen Maier

Hans Juergen Maier

Wadim Reschetnik

Stefan Leuders

Baerbel Kratz

Kevin Kondziella

Meike Husmann

Bärbel Kratz

Frank Junker

Karsten Hübinger

Simon Mueller

Henner SCHÖNEBORN

Stefan Pörtner

André Riemer

Henner Dipl-Ing Schöneborn

In a method for producing a three-dimensional workpiece (), a first raw material powder () is applied to a substrate () in order to produce a raw material powder layer consisting of the first raw material powder (). The raw material powder layer consisting of the first raw material powder () is selectively irradiated with electromagnetic radiation or particle radiation in order to produce a solidified first workpiece layer portion () from the first raw material powder (). Non-solidified first raw material powder () is then removed from the substrate (). In the next step, a second raw material powder () is applied to the substrate (), in order to produce a raw material powder layer portion consisting of the second raw material powder () adjacent to the first workpiece layer portion (), The raw material powder layer portion is selectively irradiated with electromagnetic radiation or particle radiation in order to produce a solidified second workpiece layer portion () from the second raw material powder () adjacent to the first workpiece layer portion (). The non-solidified second raw material powder () is heated in order to produce a continuous porous sintered layer portion () from the second raw material powder () adjacent to the first workpiece layer portion () and the second workpiece layer portion ().

Method and device for producing a multi-material workpiece

The application relates to a device for producing three-dimensional workpieces, the device including: a structural surface designed to receive a molding compound; and an irradiation arrangement designed to selectively irradiate the molding compound on the structural surface with electromagnetic radiation, in order to produce a workpiece by means of generative layer construction, where the irradiation device comprises a plurality of irradiation units, the irradiation units being designed to irradiate an individual region of the structural surface respectively associated with the irradiation units, and where the beams emitted by the irradiation units respectively have a cross-sectional surface corresponding to between approx. 2% and approx. 170% of the surface of the respectively associated individual region. The application also relates to the use of such a device and to a method for producing three-dimensional workpieces by means of such a device.

Production of three-dimensional workpieces by means of a plurality of irradiation units

The invention relates to a control method for controlling a multi-beam apparatus having one or more beam sources for producing a plurality of beams of a system for manufacturing a three-dimensional workpiece by means of an additive layer construction method, in which method a material that can be solidified in order to manufacture the three-dimensional workpiece is applied in layers to a surface of a carrier and the material that can be solidified is solidified by the plurality of beams in a respective layer at points of incidence of the plurality of beams on the material that can be solidified, wherein the points of incidence of the beams for solidifying selective regions of the layers of the material that can be solidified in order to manufacture the three-dimensional workpiece are each controlled substantially against a gas flow direction of a gas flow over the surface of the carrier; wherein the control method comprises (a) dividing the material to be solidified in the respective layer into at least two sections, wherein two of the at least two sections extend in the gas flow direction of the gas flow prevailing over the two of the at least two sections in succession at least in part, (b) dividing at least one of the two of the at least two sections into at least two surface pieces, (c) assigning each of the surface pieces to exactly one specific beam, which solidifies the material to be solidified in the assigned surface piece, (d) controlling the points of incidence of the beams such that, at at least one point in time during an exposure of the material to be solidified, the material to be solidified is solidified in at least two surface pieces, and a network consisting of straight lines extending between each center point of the points of incidence to every other center point of the points of incidence, at no point in time during the exposure, in which all center points of the points of incidence are located outside of a predetermined distance from each other, has a straight line parallel to the gas flow direction of the gas flow prevailing over the two of the at least two sections.

Control method, control device and production apparatus

A device is provided, for analyzing sensor data of a sensor arranged in an apparatus for producing a three-dimensional work piece via irradiation of layers of raw material with an energy beam. Further, a corresponding method and a corresponding computer program product are provided.

Technique for analyzing sensor data in powder bed additive manufacturing

The invention relates to an apparatus () for producing a three-dimensional workpiece, comprising:

Apparatus and method for producing large workpieces by means of a mobile production unit

A method for manufacturing a three-dimensional semi-finished product comprises the steps of applying a first raw material powder to a carrier, applying a second raw material powder to the carrier, selectively irradiating the first raw material powder applied to the carrier with electromagnetic radiation or particle radiation, in order to manufacture a workpiece produced from the first raw material powder on the carrier by a generative layer construction method, and selectively irradiating the second raw material powder applied to the carrier with electromagnetic radiation or particle radiation, in order to manufacture a support element produced from the second raw material powder on the carrier by a generative layer construction method, wherein the support element produced from the second raw material powder has a higher thermal conductivity than the workpiece produced from the first raw material powder and wherein the support element dissipates heat introduced during the irradiation of the first and the second raw material powder.

Method for manufacturing a semi-finished product and a workpiece

A device () for calibrating an irradiation system () of an apparatus () for producing a three-dimensional work piece comprises a control unit () adapted to control the irradiation system () so as to irradiate a radiation beam () onto an irradiation plane () according to a calibration pattern. The device () further comprises a sensor arrangement () adapted to be arranged in the irradiation plane () and to output signals to the control unit () in response to being irradiated with the radiation beam () according to the calibration pattern. The control unit () further is adapted to generate a digital image of an actual irradiation pattern produced by the radiation beans () incident on the sensor arrangement () based on the signals output by the sensor arrangement (), to compare the digital image of the actual irradiation pattern with a digital image of a reference pattern so as to determine a deviation between the actual irradiation pattern and the reference pattern, and to calibrate the irradiation system () based on the determined deviation between the actual irradiation pattern and the reference pattern.

Device and method for calibrating an irradiation system of an apparatus for producing a three-dimensional work piece

A method for producing or repairing a three-dimensional workpiece, the method including: depositing a sequence of layers of a raw material powder onto a substrate; after depositing a raw material powder layer, irradiating selected areas of the deposited raw material powder layer with an electromagnetic or particle radiation beam in a site selective manner in accordance with an irradiation pattern which corresponds to a geometry of at least part of a layer of the three-dimensional workpiece to be produced, the irradiation pattern including a scan pattern, wherein the substrate has a substantially single-crystalline microstructure; the irradiation is controlled so as to maintain the single-crystalline microstructure and to produce a metallurgical bond between sites of the raw material powder layer that are irradiated and the substrate and/or a previously deposited raw material powder layer, defining the scan pattern, so as to be one of a unidirectional or two directional scan pattern, rotating the scan pattern between two subsequently deposited raw material powder layers by a predetermined angle.

Method for producing a single-crystalline workpiece

In a method for controlling an irradiation system for use in an apparatus for producing a three-dimensional work piece, a first and a second irradiation area as well as an overlap area arranged between the first and the second irradiation area are defined on a surface of a carrier adapted to receive layers of a raw material powder to be irradiated with electromagnetic or particle radiation emitted by the irradiation system. A first irradiation unit of the irradiation system is assigned to the first irradiation area and the overlap area, and a second irradiation unit of the irradiation system is assigned to the second irradiation area and the overlap area. At least one of the first irradiation area, the second irradiation area and the overlap area is defined in dependence on a geometry of the three-dimensional work piece to be produced.

Method and device for controlling an irradiation system in dependence on a work piece geometry

A method for producing or repairing a three-dimensional work piece, the method comprising the following steps:

Method, use and apparatus for producing a single-crystalline work piece

A powder application arrangement for use in an apparatus for manufacturing work pieces by irradiating powder layers with electromagnetic radiation or particle radiation, the powder application arrangement comprises a carrier adapted to receive layers of a raw material powder and a work piece made of the raw material powder by a generative layer construction method. The powder application arrangement further includes a powder application device configured to deposit the raw material powder onto the carrier At least one camera is attached to the powder application device in such a position that it is capable of acquiring images of at least one of a surface of a raw material powder layer applied onto the carrier by means of the powder application device and a surface of the work piece made of the raw material powder by a generative layer construction method while the powder application device is moved across the carrier.

Powder application arrangement comprising a camera

An unpacking system for use in an apparatus for producing three-dimensional work pieces by irradiating layers of a raw material powder electromagnetic or particle radiation comprises a supporting structure which is configured to support a building chamber arrangement. The building chamber arrangement comprises a building chamber accommodating a carrier, the carrier being configured to receive a three-dimensional work piece produced from a raw material powder by an additive layering process. A lowering mechanism of the unpacking system is configured to apply a driving force to the building chamber so as to lower the building chamber relative to the carrier until a three-dimensional work piece received on the carrier can be removed from the carrier.

Unpacking system for use in an apparatus for producing three dimensional work pieces

A powder circuit () for use in an apparatus () for producing three-dimensional work pieces by irradiating layers of a raw material powder with electromagnetic or particle radiation comprises a process chamber () accommodating a carrier () and a powder application device () for applying a raw material powder onto the carrier (), the process chamber () being provided with a powder inlet () for supplying raw material powder to the powder application device () and a powder outlet () for discharging excess raw material powder from the process chamber (). The powder circuit () further comprises a powder circulation line () connecting the powder outlet () of the process chamber () to the powder inlet () of the process chamber () and a conveying device () arranged in the powder circulation line () for conveying the raw material powder through the powder circulation line (). A sensor arrangement () is adapted to detect at least one of a parameter characteristic of a powder supply to the conveying device () and a parameter characteristic of a powder discharge from the conveying device (). A control unit () adapted to control operation of the conveying device () in dependence of at least one of the parameter characteristic of the powder supply to the conveying device () and the parameter characteristic of the powder discharge from the conveying device ().

Powder circuit for use in an apparatus for producing three-dimensional work pieces

An apparatus for producing a three-dimensional work piece, the apparatus comprises a process chamber accommodating a carrier for receiving a raw material powder, an irradiation device for selectively irradiating electromagnetic or particle radiation onto the raw material powder on the carrier in order to produce a work piece made of said raw material powder by an additive layer construction method, a first gas inlet for supplying gas to the process chamber and a gas outlet for discharging gas from the process chamber, wherein the first gas inlet and the gas outlet are configured and arranged in such a manner that a first gas flow across the carrier is generated, a transmission element which allows the transmission of the electromagnetic or particle radiation emitted by the irradiation device into the process chamber, and a second gas inlet for supplying gas to the process chamber, wherein the second gas inlet is configured and arranged in such a manner that a second gas flow in a direction facing away from the transmission element is generated.

Apparatus for producing a three-dimensional work piece with improved gas flow

An apparatus () for producing three-dimensional work pieces comprises a carrier (), a powder application device () for applying a raw material powder onto the carrier (), an irradiation device () selectively irradiating electromagnetic or particle radiation onto the raw material powder applied onto the carrier (), and a control unit () which is adapted to control the operation of the powder application device () and the irradiation device () in dependence of the crystallization behavior of the raw material powder, in order to tailor the microstructure of a work piece made of said raw material powder by a additive layer construction method.

Method for producing work pieces having a tailored microstructure

Growing community of inventors

Luebeck, Germany

Dieter Schwarze