Method of manufacturing glass-lined metal tubes

Details Method of manufacturing glass-lined metal tubes Method of manufacturing glass-lined metal tubes

1980-10-30

1982-01-19

Kellogg, Arthur D.

Glass manufacturing

Processes

Fusion bonding of glass to a formed part

65 5921, 65 5924, 29523, 285 55, C03C 2702, C03C 2704

Patent

active

043115055

ABSTRACT:
A method of manufacturing glass-lined tube. An undercoat of glass is fused onto the surfaces of nozzle-shaped flange-pieces, from their outer peripheral edges to their molded and curved inner faces, welding flange components then welded to either end of the metal tube to form a complete flange at each end. The inner faces of the weld zones are then shaped by grinding and polishing. A glass tube that is greater in length than the metal tube is fitted loosely into the latter tube. The glass tube is supported at either end within the wells of conical caps which are fitted around the flanges by air-permeable spacer-rings, with the ends of the glass tube extending beyond the outward faces of the flange joints and with the glass tube being securely positioned at the center line of the metal tube. The entire assembly is heated so that the glass tube will soften and expand under the influence of internal pressure, thus providing a continuous covering of the inner surface of the metal tube extending to the surface of the flange junction.

REFERENCES:
patent: 2986847 (1961-06-01), Sato
patent: 3235290 (1966-02-01), Young
patent: 3281226 (1966-10-01), Tisinai
patent: 3729803 (1973-05-01), Maksutov et al.

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