Method for continuously manufacturing elongated bodies starting

Details Method for continuously manufacturing elongated bodies starting Method for continuously manufacturing elongated bodies starting

1985-07-16

1986-10-14

Lindsay, Robert

Glass manufacturing

Processes

Forming product or preform from molten glass

65 312, 65 181, 65 182, 65 32, 65135, C03B 3702

Patent

active

046170413

ABSTRACT:
A method for continuously melting a glass by means of a high-frequency electromagnetic field in a melting tube is provided. In this technique, the electromagnetic field is coupled in the melt by means of a coil present within a cooling jacket surrounding the melting tube. A grounded screen and a tube of insulating material are present between the wall of the melting tube and the coil. The melt traverses a heating zone and a refining zone, and a solid elongated body is withdrawn from the bottom of the melting tube.

REFERENCES:
patent: 1572873 (1926-02-01), Alleutt
patent: 2289787 (1942-07-01), Kaschke et al.
patent: 2673228 (1954-03-01), Kistler
patent: 3293692 (1966-12-01), Rosenbaum
patent: 3874207 (1975-04-01), Lamelson et al.
patent: 4116598 (1978-09-01), Alexandrov et al.
patent: 4230473 (1980-10-01), Miller
patent: 4339625 (1982-07-01), Delassus et al.

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