Slm Solutions Group Ag

Nikon Slm Solutions Ag

Christopher Stengel

Toni Adam Krol

Dieter Schwarze

Jan Wilkes

Daniel Alberts

Naveed Iqbal

Birk Hoppe

Kevin Kondziella

Meike Husmann

Bärbel Kratz

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 invention relates to a method for producing a three-dimensional workpiece. The method comprises irradiating a raw material layer with a laser beam, wherein a melt bath is produced at a point at which the laser beam impinges on the raw material layer, changing a position of the laser beam on the raw material layer with the aid of a first diverting unit and changing the position of the laser beam on the raw material layer with the aid of a second diverting unit. The second diverting unit is designed to divert the position of the laser beam with a greater acceleration than a maximum possible acceleration of a diversion by the first diverting unit. The invention also relates to a device for producing a three-dimensional workpiece.

Method and device for producing a three-dimensional 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

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Luebeck, Germany

Christopher Stengel