Compact coil assembly for a vacuum arc remelting system
AssigneeTitanium Metals Corporation
InventorsAshish D. Patel, Jeremy L Sensenig, Robert James McFarland, Jr., James Leroy Phillips
Life of this patent
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Abstract
A method of vacuum arc remelting an ingot provided in a crucible assembly having an electrode includes generating a rotating magnetic field normal to a longitudinal axis of the ingot and localized to an arc region during remelting. The rotating magnetic field interacts with a melting current to produce a rotating arc directed radially outward.
Claims20
A method of vacuum arc remelting an ingot provided in a crucible assembly having an electrode, the method comprising generating a rotating magnetic field normal to a longitudinal axis of the ingot and localized to an arc region during remelting, the rotating magnetic field interacting with a melting first electric current configured to melt the electrode, wherein the rotating magnetic field interacts with the first electric current to produce a rotating arc directed radially outward.
A method of vacuum arc remelting an ingot provided in a crucible assembly having an electrode, the method comprising:
- providing electric current to an electromagnetic energy source having a coil assembly to generate a rotating magnetic field that is perpendicular to a normal axis of the coil assembly;
- controlling a direction of the rotating magnetic field based on the electric current applied to the coil assembly of the electromagnetic energy source;
- and
- moving the coil assembly along a longitudinal axis of the crucible assembly to control a position of the coil assembly at a gap between the electrode and the ingot during remelting.
A method of vacuum arc remelting an ingot provided in a crucible assembly having an electrode, the method comprising:
- generating a rotating magnetic field normal to a longitudinal axis of the ingot using an electromagnetic energy source having a coil assembly;
- controlling a direction of the rotating magnetic field generated by the electromagnetic energy source based on an energizing sequence of each of a plurality of coil pairs of the coil assembly to have a rotating arc swept along a direction of the ingot;
- and
- moving the rotating magnetic field along an axis parallel to the longitudinal axis of the ingot as the ingot is being formed.
Dependencies are inferred from the claim text.