Method for flame abrasion of glass preform

Details Method for flame abrasion of glass preform Method for flame abrasion of glass preform

1995-07-05

1997-10-07

Hoffmann, John

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

With measuring, controlling, sensing, programming, timing,...

65 61, 65 65, 65120, 65404, C03B 37027

Patent

active

056743050

ABSTRACT:
The present invention relates to a process wherein a large glass preform is flame abraded to have a clear and smooth surface. In particular, the present invention pertains to a method for flame abrading a surface of a rotating glass preform by an oxyhydrogen flame which moves along a length of the glass preform, in which a movement velocity of the oxyhydrogen flame or a flow rate of oxyhydrogen of the oxyhydrogen flame is varied to conduct the flame abrasion treatment.

REFERENCES:
patent: 3485613 (1969-12-01), Herczog
patent: 3652248 (1972-03-01), Loxley
patent: 3811857 (1974-05-01), Deeg
patent: 3961926 (1976-06-01), Asam
patent: 4477273 (1984-10-01), Lynch
patent: 4645451 (1987-02-01), Schneider
patent: 5192350 (1993-03-01), LeSergent
patent: 5338327 (1994-08-01), Ohga

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