Levitating and melting apparatus and method of operating the sam

Details Levitating and melting apparatus and method of operating the sam Levitating and melting apparatus and method of operating the sam

1994-10-05

1996-06-18

Hoang, Tu

Industrial electric heating furnaces

Induction furnace device

Zone melting

373156, 219648, H05B 630

Patent

active

055286208

ABSTRACT:
In addition to a first driving device which moves only a lower crucible, and a first control device which controls the first driving device, a second driving device which changes the vertical relative position of an upper crucible and an induction coil, and a second control device which controls the second driving device are disposed, whereby the relative positions of the upper and lower crucibles and the induction coil can freely be changed. Consequently, the relative positions of the induction coil and the upper and lower crucibles can adequately be set in whole of the operation period from the initial operation stage to the final operation stage, in accordance with the position of a melting zone in the top portion of a material to be melted which grows as a result of continuously charging chips.

REFERENCES:
patent: 3702368 (1972-11-01), Hukin
patent: 3775091 (1973-11-01), Clites et al.
patent: 3841384 (1974-10-01), Tingquist et al.
patent: 4578552 (1986-03-01), Mortimer

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