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Apparatus for additive manufacturing

  • US 9,950,366 B2
  • Filed: 12/07/2016
  • Issued: 04/24/2018
  • Est. Priority Date: 04/18/2013
  • Status: Active Grant
First Claim
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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:

  • a powder container for storing powder particles;

    a coating device for coating at least a portion of said powder particles while said powder particles are inside the powder container with a coating material having at least one material characteristic that differs from a corresponding material characteristic of said powder particles;

    a powder build tank adjacent to the powder container comprising a work table;

    a powder distributor for distributing a layer of coated powder particles from said powder container as a powder bed on top of said work table; and

    an energy beam source for fusing the layer of powder particles on said work table.

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