CIRCULAR INDUCTOR Russian patent published in 2007 - IPC C21D1/42 H05B6/40 

FIELD: non-ferrous metallurgy; semiconductor metallurgy engaged in growing crystals; ferrous metallurgy for heating parts for hardening, bending and welding.

SUBSTANCE: proposed inductor has heat-conducting external ring made from tube and used for admitting the heat-exchange medium due to concentration of electromagnetic field of inductor in obtaining narrow zone of heating; inductor is also provided with internal electric-conducting and heat-conducting ring having solid cross section and area of surface corresponding to preset density of high-frequency current. These rings are interconnected through heat-conducting adapter members in form of sectors. Internal ring is electrically connected with current-supply buses. External ring may be made from conducting material and may be electrically connected in parallel with internal ring. In this case, adapter members may be also made from conducting material. Proposed inductor is used for growing the crystals by crucible-free zone-type melting whose diameter exceeds 25 mm at complete zone of melting with diameter of inductor exceeding that of crystal.

EFFECT: extended technological capabilities.

3 cl, 1 dwg, 1 ex