Flux composition for brazing
AssigneeLucas-Milhaupt, Inc.
InventorsPaul Julien Gagnon, Jr., Michael Anthony Raposa, David Wayne Jordan, Daniel J. Jossick, George Napolean Martin
Life of this patent
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Abstract
A flux coating composition may include a composition paste including an elastomer solution mixed with a flux powder or a flux paste. When the composition is heated during a brazing operation, the composition yields no metal oxides and ≦50 ppm of carbon, ash, fumes, smoke, or other by-product contaminants. The flux may include a binder with an acrylic resin and a plurality of synthetic rubber compounds.
Claims20
A flux coating composition comprising:
- a composition paste including an elastomer solution mixed with a flux powder or a flux paste, the elastomer solution comprising:
- a binder in the amount of 10-30% by weight of the flux coating composition;
- and
- a solvent in the amount of at least 30% by weight of the flux coating composition;
- the composition yields no metal oxides and ≦50 ppm of carbon, ash, fumes, smoke, or other by-product contaminants when the composition is heated in a brazing operation.
A flux coating composition for a brazing material comprising:
- a non-hygroscopic flux up to 50% by weight;
- a hinder 12-30% by weight;
- and
- a solvent at least 30% by weight.
A flux composition used for brazing, the flux composition comprising;
- a flux powder or flux paste, the flux powder or flux paste being up to 50% by weight of the flux composition;
- wherein the flux powder or flux paste comprises:
- at least one of borates, fluorides, chlorides, and salts;
- and
- at least one of lithium, sodium, potassium, rubidium, cesium, and
- wherein the flux composition is applied to a brazing material, the brazing material formed into a circular, oval, or elliptical shape and comprising a base metal or alloy composition of at least one of the elements of aluminium, copper, gold, platinum, silver, phosphorous, nickel, zinc, tin, cadmium, and manganese;
- and
- wherein the flux composition melts and flows at a first temperature and the brazing material melts and flows at a second temperature, the first temperature is lower than the second temperature.
Dependencies are inferred from the claim text.