Apparatuses, systems and methods for three-dimensional printing
First Claim
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1. A method for generating a three-dimensional object, comprising:
- (I) providing a system for generating a three-dimensional object, which system comprises;
(a) an enclosure that accommodates a powder bed, which powder bed comprises individual particles formed of at least one material selected from the group consisting of an elemental metal, metal alloy, ceramic, and an allotrope of elemental carbon;
(b) an energy source that provides an energy beam to a portion of the powder bed during use; and
(c) at least one controller operatively coupled to the energy source and programmed to;
(i) receive instructions to generate at least a portion of the three-dimensional object, and (ii) direct the energy beam along a path to transform a portion of the powder bed to a transformed material such that a remainder of the powder bed that does not transform into the transformed material is at an average temperature having a value of at most 400 degrees Celsius as the portion of the powder bed is transformed into the transformed material, wherein the three-dimensional object (1) comprises a plurality of layers of hardened material and (2) is suspended anchorlessly in the powder bed during formation, wherein during use, the plurality of layers of hardened material is devoid of at least two metals at a ratio capable of forming a eutectic alloy; and
(II) using the system to generate the three-dimensional object.
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Abstract
The present disclosure provides three-dimensional (3D) objects, 3D printing processes, as well as methods, apparatuses and systems for the production of a 3D object. Methods, apparatuses and systems of the present disclosure may reduce or eliminate the need for auxiliary supports. The present disclosure provides three dimensional (3D) objects printed utilizing the printing processes, methods, apparatuses and systems described herein.
737 Citations
28 Claims
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1. A method for generating a three-dimensional object, comprising:
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(I) providing a system for generating a three-dimensional object, which system comprises; (a) an enclosure that accommodates a powder bed, which powder bed comprises individual particles formed of at least one material selected from the group consisting of an elemental metal, metal alloy, ceramic, and an allotrope of elemental carbon; (b) an energy source that provides an energy beam to a portion of the powder bed during use; and (c) at least one controller operatively coupled to the energy source and programmed to;
(i) receive instructions to generate at least a portion of the three-dimensional object, and (ii) direct the energy beam along a path to transform a portion of the powder bed to a transformed material such that a remainder of the powder bed that does not transform into the transformed material is at an average temperature having a value of at most 400 degrees Celsius as the portion of the powder bed is transformed into the transformed material, wherein the three-dimensional object (1) comprises a plurality of layers of hardened material and (2) is suspended anchorlessly in the powder bed during formation, wherein during use, the plurality of layers of hardened material is devoid of at least two metals at a ratio capable of forming a eutectic alloy; and(II) using the system to generate the three-dimensional object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for generating a three-dimensional object, comprising:
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(a) an enclosure that accommodates a powder bed, which powder bed comprises individual particles formed of at least one material selected from the group consisting of an elemental metal, metal alloy, ceramic, and an allotrope of elemental carbon; (b) an energy source that provides an energy beam to a portion of the powder bed during use; and (c) at least one controller operatively coupled to the energy source and programmed to;
(i) receive instructions to generate at least a portion of the three-dimensional object, and (ii) direct the energy beam along a path to transform a portion of the powder bed to a transformed material such that a remainder of the powder bed that does not transform into the transformed material is at an average temperature having a value of at most 400 degrees Celsius as the portion of the powder bed is transformed into the transformed material, wherein the three-dimensional object (1) comprises a plurality of layers of hardened material and (2) is suspended anchorlessly in the powder bed during formation, and wherein during use, the plurality of layers of hardened material is devoid of at least two metals at a ratio capable of forming a eutectic alloy. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification