Fusing One or More Cross Sections by Electron Beam Powder Bed Fusion
AssigneeSiemens Aktiengesellschaft
InventorsJan Drendel, Ruslan Logvinov, Frank Heinrichsdorff
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Abstract
Various embodiments of the teachings herein include a method for fusing one or more cross sections in a powder layer for building one or more objects layer by layer with electron beam powder bed fusion. The method may include: pre-sintering only the cross sections in the powder layer by scanning the cross sections with a first line energy; and fusing the cross sections by scanning the cross sections with a second line energy. The second line energy exceeds the first line energy by at least a factor of 2.
Claims12
A method for fusing one or more cross sections in a powder layer for building one or more objects layer by layer with electron beam powder bed fusion, the method comprising:
- pre-sintering only the cross sections in the powder layer by scanning the cross sections with a first line energy;
- and
- fusing the cross sections by scanning the cross sections with a second line energy;
- wherein the second line energy exceeds the first line energy by at least a factor of 2.
A method for building one or more objects layer by layer, the method comprising:
- fusing one or more cross sections in one or more powder layers by:
- pre-sintering only the cross sections in the powder layer by scanning the cross sections with a first line energy;
- and
- fusing the cross sections by scanning the cross sections with a second line energy;
- wherein the second line energy exceeds the first line energy by at least a factor of 2.
An electron beam powder bed fusion system for fusing one or more cross sections in a powder layer for building one or more objects layer by layer, the system comprising:
- a platform holding a powder bed;
- and
- an electron beam scanner configured to:
- pre-sintering only the cross sections in the powder layer by scanning the cross sections with a first line energy;
- and
- fusing the cross sections by scanning the cross sections with a second line energy;
- wherein the second line energy exceeds the first line energy by at least a factor of 2.
Dependencies are inferred from the claim text.