Mechanical engineering

Fabrication additive par modulation de vitesse de balayage

Published on

Authors: Kamel Ettaieb, Sylvain Lavernhe, Christophe Tournier, Gilles Walrand

The present invention relates to a method for selective additive manufacturing of a three-dimensional object from a powder layer, the method comprising the steps of: - applying an additive manufacturing powder layer on a support or on a previously consolidated layer, - emitting a laser beam onto a first point of the additive manufacturing powder layer so as to consolidate a first area of the powder layer comprising the first point, the method further comprising - adjusting a scanning speed of the laser beam according to an estimated temperature variation of the powder layer at a second point distinct from the first point of the powder layer caused by the emission of the laser beam, so as to consolidate the first area of the powder layer, - emitting a laser beam onto the second point so as to consolidate a second area of the powder layer comprising the second point, the estimated temperature variation being a function of a predetermined time interval separating the emission on the first point and the emission on the second point, the distance separating the first point and the second point which is equal to the product of the scanning speed adjusted by the predetermined time interval.