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US 10,711,367 B2Granted
Multi-layer susceptor design for magnetic flux shielding in directional solidification furnaces
AssigneeRaytheon Technoiogies Corporation
InventorsJoseph V. Mantese, Ryan C. Breneman, Thomas Anthony Rebbecchi, Andrew Boyne, John Joseph Marcin, Dustin W. Davis, David Ulrich Furrer, James Tilsley Auxier
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Abstract
An induction furnace assembly comprising a chamber having a mold; a primary inductive coil coupled to the chamber; a layered susceptor comprising at least two layers of magnetic field attenuating material surrounding the chamber between the primary inductive coil and the mold to nullify the electromagnetic field in the hot zone of the furnace chamber.
Claims9
A process for directional solidification of a cast part comprising:
- energizing a primary induction coil coupled to a chamber having a mold containing a casting material;
- generating an electromagnetic field with the primary induction coil within the chamber, a susceptor coupled to said chamber between said primary induction coil and said mold;
- transducing at least a portion of said electromagnetic field into heat energy used to heat said mold;
- attenuating at least a portion of said electromagnetic field with said susceptor, wherein said susceptor comprises at least two layers of electromagnetic shield material, wherein said susceptor comprises a first layer and a second layer enclosing an interior layer;
- and said first layer and said second layer are configured for protecting the interior layer from material degradation;
- and
- casting the material within the mold wherein the interior layer comprises at least one of a castable nickel-based or Co-based superalloy and castable ferrous alloys.
4 more elements
Dependencies are inferred from the claim text.