Brazing compositions and uses thereof
AssigneeHoltec International
InventorsKrishna P. Singh, William G. Scholfield, Dmitriy Yakov Katz, Joseph Paul Mosher, Robert Charles Sloan, Thomas G. Haynes, III
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Abstract
Described herein are compositions for use in the brazing of metal substrates, methods of making and using these compositions are also described herein. Heat exchangers often have a distributor tube whose external surface is provided with cooling fins. The distributor tube is typically a steel tube coated with a metal having good heat conduction, such as aluminum. The cooling fins themselves also generally comprise aluminum because of its good heat conductivity and low weight.
Claims36
A brazing composition comprising:
- a metal halide;
- and
- from about 40 wt. % to about 65 wt. % of a hydrophobic carrier.
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A brazing composition comprising:
- a first component comprising
- a metal halide;
- and
- a hydrophobic carrier;
- and
- a second component comprising a filler metal comprising greater than 50 wt. % of aluminum based on the total weight of the second component.
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A brazing composition comprising:
- a first component comprising:
- a metal halide in a first amount ranging from about 35 wt. % to about 60 wt. % based on the total weight of the first component;
- and
- a hydrophobic carrier present in a second amount ranging from about 40 wt. % to about 65 wt. % based on the total weight of the first component;
- and
- a second component comprising:
- a filler metal comprising greater than 50 wt. % of aluminum based on the total weight of the second component.
Dependencies are inferred from the claim text.