B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
B23P 15/26 (2006.01) B21C 37/15 (2006.01) B21K 25/00 (2006.01) F28D 1/03 (2006.01) F28F 3/04 (2006.01)
Patent
CA 2208945
A process for producing a flat heat exchange tube having parallel fluid passages in its interior and comprising an upper wall, a lower wall, right and left side walls interconnecting right and left side edges of the upper and lower walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another, by brazing a first tube component member of aluminum and a second tube component member of aluminum into an integral assembly, the first component member including a lower wall forming portion and a plurality of reinforcing wall forming portions integral with and extending upward from the lower wall forming portion, the second component member including an upper wall forming portion comprising a brazing sheet having a brazing material layer over at least the lower of upper and lower surfaces thereof. The process comprises forming in advance at least one longitudinally extending ridge for giving enhanced brazing strength on a part of the lower surface of the upper wall forming portion of the second component member which part corresponds to each of the reinforcing wall forming portions, tacking the two component members together with a force applied thereto from above and below, and thereafter brazing the two component members.
Furuta Masakazu
Osame Yasuhiro
Takahashi Kazuyuki
Tanaka Daishi
Fetherstonhaugh & Co.
Showa Aluminum Corporation
Showa Denko K.k.
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