Patent ID: 11925979
Assignee: INDUCTOTHERM, CORP.
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  Y | IPC B

Claim 0:
1. A system for producing a large steel ingot by a solidification of a molten steel in a casting mold, the system comprising:
a casting ingot for containing the molten steel, the molten steel forming a riser part of the molten steel and a main part of the molten steel disposed below the riser part in the casting mold;
an electric induction heating coil positioned within the casting mold parallel and proximate to a top surface area of the molten steel in the casting mold;
wherein an entirety of the electric induction heating coil is suspended at an offset distance over the top surface area of the molten steel;
an electric power source configured for continuous supply of a variable power output and a variable frequency output to the electric induction heating coil, the variable power output and the variable frequency output simultaneously adjustable over a power range and a frequency range to supply an induced heating energy and a stirring force to maintain the molten steel in a molten state in the riser part until after the molten steel in the main part has solidified;
wherein the induced heating energy supplied by the electric power source to the electric induction heating coil is maintained consistently at a nominal induced power.