F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
26/108, 285/43,
F16L 13/10 (2006.01) C09J 5/02 (2006.01) F28F 9/26 (2006.01)
Patent
CA 1088974
A D H E S I V E B O N D I N G O F A L U M I N U M C O I L S ABSTRACT OF THE DISCLOSURE The present invention is directed to a method and apparatus for joining aluminum members within an aluminum heat exchanger coil. A tubular member to be joined to a separate member in the coil has its exterior surface roughened by sand blasting to enhance adhesive adherence. The roughened surface is covered with a conversion coating to replace any accumulated aluminum oxide, to prevent the formation of additional aluminum oxides and to simultaneously provide a surface adapted to adhere to an adhesive. An adhesive is then applied to the mating areas of the tubular members to be joined and subsequently cured to form a tight secure joint. This invention is particularly useful in field repair of aluminum heat exchanger coils.
313502
Greever James E.
Zimmerli Robert H.
Carrier Corporation
Gowling Lafleur Henderson Llp
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