METHOD AND APPARATUS FOR ADDITIVE MANUFACTURING

摘要

Various embodiments provide a method and apparatus for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed provided on a work table in an additive manufacturing machine, which parts corresponds to successive cross sections of the three-dimensional article. The method comprises the steps of: applying a layer of predetermined thickness of powder particles on the work table, applying a coating on at least a portion of the powder particles, which coating is at least partially covering the powder particles, and fusing the powder particles on the work table with an electron beam.

主权项

1. An apparatus for forming a three-dimensional article through successive fusion of parts of at least one layer of a powder bed applied onto a work table, which parts corresponds to successive cross sections of the three-dimensional article, said apparatus comprising:
an energy beam source for fusing a layer of powder particles; a powder distributor for distributing said powder particles on top of said work table; and a coating device for coating at least a portion of said powder with a coating material having at least one material characteristic that differs from a corresponding material characteristic of said powder particles.