Metal fusion bonding – Process – With pretreating other than heating or cooling of work part...
Patent
1994-09-29
1995-11-07
Heinrich, Samuel M.
Metal fusion bonding
Process
With pretreating other than heating or cooling of work part...
228254, 22826251, 228197, B23K 119, B23K 120
Patent
active
054641462
ABSTRACT:
An improved method of brazing of two unclad aluminum shapes, particularly for automotive heat exchangers, which brazing joint does not leave a physically apparent layer of brazing material and which effects a stronger, sounder autogenous joint. A thin film of aluminum eutectic forming material (Si, Al-Si or Al-Zn) is deposited onto a zone of at least one of the shapes to be brazed or joined. The shapes are placed in joining relationship to form an assembly with a joint at the zone. The assembly is heated to a temperature to diffuse the eutectic forming material into the aluminum members to form a sacrificial bond between the shapes at the joining zone. It is desirable that at least one of the unclad aluminum shapes to be joined is extruded tubing having a precise diametrical configuration and said film is deposited as a physically vapor deposited layer in a thickness range of 1-50 microns.
REFERENCES:
patent: 4010530 (1977-03-01), Delgrosso et al.
patent: 4011982 (1977-03-01), Marancik
patent: 4606495 (1986-08-01), Stewart, Jr. et al.
patent: 4681251 (1987-07-01), Komatsu et al.
patent: 4831701 (1989-05-01), Yutaka
patent: 4890784 (1990-01-01), Bampton
patent: 4891275 (1990-01-01), Knoll
patent: 4901908 (1990-02-01), Negura et al.
patent: 4978051 (1990-12-01), Tiearney, Jr. et al.
patent: 5072789 (1991-12-01), Usui et al.
patent: 5083697 (1992-01-01), Difrancesco
patent: 5100048 (1992-03-01), Timsit
patent: 5190596 (1993-03-01), Timsit
Grab Gerald A.
Smith Warren A.
Zaluzec Matthew J.
Ford Motor Company
Heinrich Samuel M.
Malleck Joseph W.
May Roger L.
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