Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1986-06-27
1987-09-22
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
373 7, C22B 400
Patent
active
046953167
ABSTRACT:
A system for simultaneously melting metal and holding molten metal for casting operations and the like comprises a plurality of coreless induction furnaces. Each furance has an induction coil having a plurality of coil turns. The induction coils of the furances are arranged to inductively heat metal in the furnaces and are connected in electrical series. A single power supply furnishes AC power to the series-connected induction coils. Electrical taps are located on each induction coil at spaced intervals along the coil for enabling electrical connections to be made to the induction coils at said intervals. Each interval comprises a preselected number of coil turns. Switch means are associated with each induction coil and connected to selected ones of the electrical taps for selectably switching a preselected number of coil turns into and out of circuit with the power supply for selectively melting or holding molten metal in the induction furnace associated with a selected coil.
REFERENCES:
patent: 1751856 (1930-03-01), Greene
patent: 1828291 (1931-10-01), Northrup
patent: 1849309 (1932-03-01), Northrup
patent: 2013653 (1935-09-01), Hoke
Inductotherm Corporation
Rosenberg Peter D.
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