Induction coil in the form of a flat coil for crucible-free floa

Details Induction coil in the form of a flat coil for crucible-free floa Induction coil in the form of a flat coil for crucible-free floa

1982-09-29

1985-03-19

Envall, Jr., Roy N.

Electric heating

Metal heating

Of cylinders

219 1049R, H05B 636

Patent

active

045061327

ABSTRACT:
Flat induction heating coil for crucible-free floating zone melting a semiconductor crystalline rod having a turn annularly surrounding the semiconductor rod, the turn being formed with at least one passage therethrough for a cooling liquid, including an energy concentrator located at an inner side of the heating coil turn facing towards the semiconductor rod to be melted, the energy concentrator being subdivided into a plurality of segments electrically isolated from one another.

REFERENCES:
patent: 3644151 (1972-02-01), Keller
patent: 3827017 (1974-07-01), Keller

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