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US 9,789,541 B2Granted
Method for additive manufacturing of three-dimensional articles
AssigneeArcam AB
InventorMattias Fager
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AssigneeArcam AB
InventorMattias Fager
Estimating the term…
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 three-dimensional article, the method comprising the steps of: providing a model of the at least one three-dimensional article; applying a first powder layer on a work table; directing a first energy beam from a first energy beam source over the work table causing the first powder layer to fuse in first selected locations according to corresponding models to form a first cross section of the three-dimensional article, where the first energy beam is fusing at least a first region of a first cross section with parallel scan lines in a first direction; varying a distance between two adjacent scan lines, which are used for fusing the powder layer, as a function of a mean length of the two adjacent scan lines.
A method for forming at least one three-dimensional article without introducing either porosities or incomplete fusion therein through successive fusion of parts of a powder bed, which parts correspond to successive cross sections of the three-dimensional article, said method comprising the steps of:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Producing shaped prefabricated articles from the material: rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating…
Direct sintering or melting: powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
Of energy beam parameters: scanning parameters, e.g. hatch distance or scanning strategy
Using only solid materials: using layers of powder being selectively joined, e.g. by selective laser sintering or melting
About 9 years 3 months of term left · ends 3 Feb 2036 (estimated)
Related Field
Various embodiments of the present invention relate to a method for additive manufacturing of three-dimensional articles.
Description of Related Art
Having thus described the invention in general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
FIG. 1 depicts a view from above of a three-dimensional article provided with a pattern of scan lines according to various embodiments of the present invention;
FIG. 2 illustrates schematically a view from above of an example embodiment of a melting strategy of a three-dimensional article using two energy beams according to various embodiments of the present invention,
Various embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. Indeed, embodiments of the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly known and understood by one of ordinary skill in the art to which the invention relates. The term “or” is used herein in both the alternative and conjunctive sense, unless otherwise indicated. Like numbers refer to like elements throughout.
Still further, to facilitate the understanding of this invention, a number of terms are defined below. Terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention. Terms such as “a”, “an” and “the” are not intended to refer to only a singular entity, but include the general class of which a specific example may be used for illustration. The terminology herein is used to describe specific embodiments of the invention, but their usage does not delimit the invention, except as outlined in the claims.
The term “three-dimensional structures” and the like as used herein refer generally to intended or actually fabricated three-dimensional configurations (e.g., of structural material or materials) that are intended to be used for a particular purpose. Such structures, etc. may, for example, be designed with the aid of a three-dimensional CAD system.