초록 ▼

A process for melting an electroconductive material (1) in a melting furnace (10) by induction in a cold crucible includes electromagnetically confining a mass of the electroconductive material (1) up to its melting temperature. Then, at least one vortex is created in the liquid material to inclusio

A process for melting an electroconductive material (1) in a melting furnace (10) by induction in a cold crucible includes electromagnetically confining a mass of the electroconductive material (1) up to its melting temperature. Then, at least one vortex is created in the liquid material to inclusion particles contained in the liquid electroconductive material. The vortex or vortices are created by electromagnetic stirring. A part of the mass of the liquid electroconductive material (1) is poured in a pouring tube (15) disposed under the melting furnace (10), subjecting the jet of the pouring of the liquid electroconductive material (1) to a radial electromagnetic confinement, and ensuring a vertical coaxial alignment of the electromagnetic fields acting on the mass of liquid electroconductive material (1) and on the pouring jet of the mass. An induction melting furnace employing a cold crucible for carrying out this is also disclosed.

대표청구항 ▼

A process for melting mass of electroconductive material in an induction melting furnace employing a cold crucible, said process comprising: electromagnetically confining in said melting furnace a mass of said electroconductive material up to its melting temperature, decanting inclusion particles co

A process for melting mass of electroconductive material in an induction melting furnace employing a cold crucible, said process comprising: electromagnetically confining in said melting furnace a mass of said electroconductive material up to its melting temperature, decanting inclusion particles contained in liquid electroconductive material, pouring a part of the mass of said liquid electroconductive material as a pouring jet through a pouring tube disposed under said melting furnace, subjecting said jet of said liquid electroconductive material to a radial electromagnetic confinement, ensuring a vertical coaxial alignment of electromagnetic fields producing said electromagnetic confinement of said mass of liquid electroconductive material and said pouring jet, and creating, by an electromagnetic stirring in said mass of liquid electroconductive material at least one vortex in which inclusion particles are driven in a whirling motion and decanted upon reaching surface of said mass of liquid electroconductive material.