Method for heating a metal casting using infrared energy
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United States of America Patent
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Sep 19, 2023
Grant Date -
Nov 19, 2020
app pub date -
Aug 3, 2020
filing date -
Jan 6, 2016
priority date (Note) -
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Abstract
A metal casting is heated using infrared energy by introducing the metal casting into a heating chamber with infrared emitters directed towards the casting, and activating at least a portion of the emitters. The infrared emitters may have a metal coil that is partially embedded in a refractory material, and be tunable to emit wavelengths from about 2 μm to about 3.3 μm. The infrared wavelength used to heat the metal casting may be selected based on a surface roughness of the casting. Surface roughness can be measured by measuring a roughness of a part cast from the same mold as the heated casting, which can be the casting that is being heated. Heating may be controlled by measuring the temperature of the casting while a shield is deployed that covers the emitters, which prevents radiations from the emitters from affecting the temperature measurement.
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