METHOD FOR ADDITIVE MANUFACTURING

摘要

A method for forming a three-dimensional article through successive fusion of parts of a powder bed comprising: providing a model of the three dimensional article, applying a first powder layer on a work table, directing an energy beam over the work table causing the first powder layer to fuse in selected locations according to the model to form a first cross section of the three-dimensional article, applying a second powder layer on the work table, directing the energy beam over the work table causing the second powder layer to fuse in selected locations according to the model to form a second cross section of the three-dimensional article, wherein the second layer is bonded to the first layer, detecting a local thickness in at least two positions in at least the second powder layer, varying an energy beam parameter depending on the detected local thickness of the second powder layer.

主权项

1. A method for forming at least one three-dimensional article through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the at least one three-dimensional article, said method comprising the steps of:
providing a model of said at least one three dimensional article; applying a first powder layer on a work table; directing at least one energy beam over said work table causing said first powder layer to fuse in selected locations according to said model to form a first cross section of said three-dimensional article; applying a second powder layer on said work table; directing the at least one energy beam over said work table causing said second powder layer to fuse in selected locations according to said model to form a second cross section of said three-dimensional article, wherein said second layer is bonded to said first layer; detecting a local thickness in at least two positions in at least said second powder layer; and varying an energy beam parameter depending on the detected local thickness of said second powder layer in order to melt said second powder layer and to remelt at least a predetermined thickness of said first cross section.