Glass-lined pipes
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United States of America Patent
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-
Oct 27, 1987
Grant Date -
N/A
app pub date -
Jul 3, 1986
filing date -
Jul 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of producing a glass-lined metal pipe in which an unconsolidated tal or metal alloy powder is loaded into a sealable glass mold comprising a graphite core, a glass sleeve slipped over the graphite core with a sliding fit, a sealable outer glass envelope surrounding the graphite core and glass sleeve forming with them a sealable chamber for the metal or metal alloy powder, wherein the glass is a type which becomes plastic when heated. The air in the mold is removed under vacuum and the mold is sealed and placed into a free flowing refractory powder in a crucible and consolidated by sintering under atmospheric pressure (CAP.RTM. process). Removal of the glass envelope and the graphite core produces a glass-lined pipe in which the glass liner is slightly fused into and is under compressive force from the surrounding metal pipe.
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