Renishaw Plc

Eos Gmbh Electro Optical Systems

Mtu Aero Engines Ag

Marc Dimter

Ralph Mayer

Thomas Hess

David R McMurtry

Alexander Schilling

Robert Achim Domröse

Michael Hutzel

Andre Danzig

Jorg Hamann

Ludger Hümmeler

Tatu Syvänen

Juha Kotila

Rainer Salzberger

Jörg Hamann

Michael Frey

André Danzig

Selective laser solidification apparatus is described that includes a powder bed onto which a powder layer can be deposited and a gas flow unit for passing a flow of gas over the powder bed along a predefined gas flow direction. A laser scanning unit is provided for scanning a laser beam over the powder layer to selectively solidify at least part of the powder layer to form a required pattern. The required pattern is formed from a plurality of stripes or stripe segments that are formed by advancing the laser beam along the stripe or stripe segment in a stripe formation direction. The stripe formation direction is arranged so that it always at least partially opposes the predefined gas flow direction. A corresponding method is also described.

Method of selective laser solidification

Selective laser solidification apparatus and method

This invention concerns an additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

Additive manufacturing apparatus and method

A method for producing a three-dimensional object by applying layers of a pulverulent construction material and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material is applied to a support or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam from an energy source sweeps over points on the applied layer corresponding to a cross-section of the object to be produced in order to selectively solidify the pulverulent construction material; and a gas flow is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam. The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam are adapted to one another at least in one region of the cross-section to be solidified.

Method and device for producing a three-dimensional object

A method for producing a three-dimensional object () by applying layers of a pulverulent construction material () and by selectively solidifying said material by the action of energy comprises the steps: a layer of the pulverulent construction material () is applied to a support () or to a layer of the construction material that has been previously applied and at least selectively solidified; an energy beam () from an energy source () sweeps over points on the applied layer corresponding to a cross-section of the object () to be produced in order to selectively solidify the pulverulent construction material (); and a gas flow () is guided in a main flow direction (RG) over the applied layer during the sweep of the energy beam (). The main flow direction (RG) of the gas flow (G) and the sweep direction (RL) of the energy beam () are adapted to one another at least in one region of the cross-section to be solidified.

An additive manufacturing apparatus for building objects by layerwise consolidation of material. The apparatus includes a build chamber containing a working area, a high energy beam for consolidating material deposited in the working area in layers and a flow device for generating a gas flow across at least a part of the working area from a gas inlet to a gas outlet. The gas inlet and gas outlet are arranged to be movable within the build chamber.

A method for manufacturing a three-dimensional object by successively solidifying layers of a building material at positions in the respective layer corresponding to the cross-section of the object is provided, wherein at least a partial region of a layer is solidified such that a pattern is generated, which pattern contains a plurality of substantially parallel solidification lines (V, S), and at least a partial region of a subsequent layer is exposed such that a pattern is generated, which pattern contains a plurality of substantially parallel solidification lines (V, S) that are rotated with respect to the solidification lines of the pattern of the previous layer by an angle (&#x3b1;) that differs from 180&#xb0;, 90&#xb0; and 45&#xb0;.

Method and device for manufacturing a three-dimensional object

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Kornwestheim, Germany

Marc Dimter