Mechanical engineering
Fabrication additive par modulation de puissance laser
Published on
The invention relates to a method for the 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 on 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 power of the laser beam as a function of an estimated temperature variation of the powder layer at a second point distinct of 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, the estimated temperature variation being a function of the distance between the first point and the second point and a predetermined time interval, - emitting a laser beam on the second point with the adjusted power so as to consolidate a second area of the powder layer comprising the second point, wherein the emission of the laser beam on the first point and the emission of the laser beam on the second point are temporally separated from the predetermined time interval.