Method and apparatus for additive manufacturing
First Claim
1. A method 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 a vacuum chamber, which parts corresponds to successive cross sections of the three-dimensional article, said method comprising the steps of:
- applying a layer of predetermined thickness of powder particles on said work table in said vacuum chamber;
applying a coating material on at least a portion of said layer of said powder particles while said powder particles are inside said vacuum chamber, wherein said coating material (a) is at least partially covering said powder particles, and (b) has an electrical conductivity higher than an electrical conductivity of the powder particles, said higher electrical conductivity of said coating material being configured for increasing the electrical conductivity of the powder; and
fusing said powder particles on said work table with an energy beam.
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Accused Products
Abstract
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.
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Citations
11 Claims
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1. A method 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 a vacuum chamber, which parts corresponds to successive cross sections of the three-dimensional article, said method comprising the steps of:
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applying a layer of predetermined thickness of powder particles on said work table in said vacuum chamber; applying a coating material on at least a portion of said layer of said powder particles while said powder particles are inside said vacuum chamber, wherein said coating material (a) is at least partially covering said powder particles, and (b) has an electrical conductivity higher than an electrical conductivity of the powder particles, said higher electrical conductivity of said coating material being configured for increasing the electrical conductivity of the powder; and fusing said powder particles on said work table with an energy beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification