B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
204/14, 26/145,
B23K 1/20 (2006.01) B23K 1/00 (2006.01) C25D 3/22 (2006.01) C25D 5/44 (2006.01) C25D 7/00 (2006.01)
Patent
CA 1294419
ABSTRACT OF THE DISCLOSURE A method for producing corrosion resistant heat exchangers having a plurality of aluminum tubular elements and fin members, the method comprising immersing the tubular elements in a bath while passing an electric current so that the surfaces thereof are covered with zinc layers of 0.3µm or more in thickness; combining the zinc plated tubular elements with fin members covered with a brazing sheet so that a core is provisionally formed; painting the provisional core with a non-corrosive flux; and placing the provisional core in a furnace to braze the fin members to the tubular elements, and also to enable the zinc layers to diffuse over the surfaces of the tubular elements.
546044
Iwai Ichiro
Otsuka Tatsuo
Yamaguchi Noboru
Iwai Ichiro
Marks & Clerk
Otsuka Tatsuo
Showa Aluminum Kabushiki Kaisha
Yamaguchi Noboru
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