THREE-DIMENSIONAL FABRICATION WITH LOCALLY ACTIVATED BINDING OF SINTERABLE POWDERS
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United States of America Patent
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Apr 14, 2017
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Apr 14, 2016
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Abstract
A powder bed is filled layer by layer with a sinterable powder and a liquid binder. After the liquid binder is applied, the liquid binder can be activated, e.g., by selectively curing cross-sections of the binder according to a computerized three-dimensional model of an object. In this manner, a sinterable net shape object can be formed within the powder bed layer by layer. The sinterable net shape can then be removed, debound as appropriate, and sintered into a final part.
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