Method for the continuous production of a tube or rod of vitreou

Details Method for the continuous production of a tube or rod of vitreou Method for the continuous production of a tube or rod of vitreou

1989-02-17

1990-05-08

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 325, 65 61, 65111, 65DIG4, 65DIG9, C03B 1514, C03B 2106

Patent

active

049234978

ABSTRACT:
A method for the continuous production of a tube or rod of vitreous fused silica. Silicon dioxide in particle form is heated in a crucible to the softening temperature and is withdrawn contiuously downward from a bottom outlet opening in which a shaping tool is disposed. In the annular space between the shaping tool and the bottom outlet opening the softened silicon dioxide is subjected to an electrical field. In the closed crucible, a hydrogen-containing atmosphere with a hydrogen content of at least 80% is sustained above the silicon dioxide and in the space underneath the crucible that adjoins the shaping region.

REFERENCES:
patent: 2155131 (1938-03-01), Hanlein
patent: 3109045 (1963-10-01), Silverman
patent: 3328149 (1967-06-01), Keefer
patent: 3429972 (1969-02-01), LeClerc et al.
patent: 3764286 (1973-10-01), Antczak et al.
Manufacture of Fused Silica Glass Tubing and Rod "Glass", Nov. 1972, pp. 337, 338.

Affiliated with

Also associated with

Rating

Method for the continuous production of a tube or rod of vitreou does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the continuous production of a tube or rod of vitreou, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the continuous production of a tube or rod of vitreou will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2346748