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Sebastien Devroe

Raphael Vernet

Didier Pezet

Pascal Belaubre

A device for separating particles contained in a gas stream for selective additive manufacturing and a selective additive manufacturing apparatus are disclosed. The device comprises at least one dry-type aeraulic separator comprising a separating turbine, a speed of rotation of which is variable. The dry-type aeraulic separator selects the particles contained in the gas stream according to a particle size depending on the speed of rotation of the separating turbine. The device also comprises a device for extracting the particles. The dry-type aeraulic separator and the extraction device are in fluidic communication such that a gas stream exiting the dry-type aeraulic separator circulates through the extraction device and such that the gas stream exiting the extraction device circulates through the dry-type aeraulic separator. The device also comprises a device for circulating the gas stream between the dry-type aeraulic separator and the extraction device.

Particle separation device for additive manufacture and additive manufacturing apparatus

A method for detecting defects in a layer of additive manufacturing powder deposited on a work zone, comprises the steps of: i. acquiring an image of a layer of additive manufacturing powder, ii. determining a discrete spectral representation of the image acquired, iii. filtering the discrete spectral representation of the image acquired in frequency terms, iv. determining a filtered image from the filtered discrete spectral representation of the image acquired, and v. analyzing the filtered image so as to detect defects.

Method for detecting defects in an additive manufacturing powder layer deposited on a working area

A method for manufacturing a part made up entirely or partially of at least one three-dimensional lattice is disclosed. The three-dimensional lattice is produced by additive manufacturing by successive depositions of different layers of additive manufacturing powder and selective consolidation of the layers of powder along at least one path comprising different manufacturing vectors, the three-dimensional lattice comprising at least two layers of parallel strands that are spaced apart from one another, the strands of one layer extending in a longitudinal direction different from the longitudinal direction in which the strands of another layer extend. The manufacturing method provides that each strand is consolidated only via a plurality of manufacturing vectors extending in the longitudinal direction in which the strand extends.

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CEBAZAT, France

Sebastien Devroe