Method and apparatus for controlled atmosphere brazing of folded

Details Method and apparatus for controlled atmosphere brazing of folded Method and apparatus for controlled atmosphere brazing of folded

1997-07-03

1999-12-14

Leo, Leonard

Heat exchange

With repair or assembly means

Positioner or retainer for settable material

165133, 165153, 165173, 165177, 165183, 29890043, 29890053, 29890054, 138115, 138156, F28D 1053, F28F 916, B23P 1526

Patent

active

060004614

ABSTRACT:
A heat exchanger (10) assembly with a first header (12), a second header (14), a plurality of seamed or folded type heat exchanger tubes (18) extending between the two headers (12, 14), and a plurality of heat exchanger fins (16). Each of the plurality of fins (16) has between 0.01% and 0.9% magnesium to improve the braze between the header (12, 14) and tube joint and the tube seam to inner surface joint (140). Additionally, the headers (12, 14) have a cladded inner surface with between about 0% to about 12.6% silicon to improve the braze at the tube-to-header joint.

REFERENCES:
patent: 4241727 (1980-12-01), Toti
patent: 4825941 (1989-05-01), Hoshino et al.
patent: 4991647 (1991-02-01), Kawabe et al.
patent: 5579837 (1996-12-01), Yu et al.
patent: 5704423 (1998-01-01), Letrange

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