Adhesive bonding and miscellaneous chemical manufacture – Delaminating processes adapted for specified product – Delaminating in preparation for post processing recycling step
Patent
1987-04-01
1988-08-30
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Delaminating processes adapted for specified product
Delaminating in preparation for post processing recycling step
156664, 156656, 252 793, C23F 100, B44C 122
Patent
active
047674970
ABSTRACT:
Aluminum alloys suitable for fabrication into plate and fin type heat exchangers are subjected to a chemical etching procedure in order to improve the heat transfer efficiency thereof. Applicants have found that a high temperature heat treatment of an aluminum alloy plate material to produce a precipitate, followed by exposure to an etching composition, results in a heat exchanger surface modified by the formation of pits. The heat exchangers so modified may be advantageously used in the reboiler/condensor section of air separation units.
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Bandyopadhyay Nikhiles
Krueger Paul C.
Shattes Walter J.
Cassett Larry R.
Konkol Chris P.
Powell William A.
Swope R. Hain
The BOC Group Inc.
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