Method of depositing flux or flux and metal onto a metal brazing substrate
AssigneeAlcoa Inc.
InventorsRaymond J. Kilmer, John B. Eye
Life of this patent
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Abstract
The present invention is directed to a means for the surface preparation of a metal or metal alloy substrate. In the process of the present invention, a stream of a mixture of flux particles and metal particles is hurled at the substrate at velocities effective for flux adhesion to the surface. The velocities of the particle stream is adjusted so that the flux particles adhere to the surface and the metal particles bounce off the surface. At higher temperatures and velocities, the metal particles are co-deposited with the flux.
Claims13
A method of treating a surface of a metal article comprising the steps of:
- a) providing a treating composition including a gas and metal halide particles;
- and
- b) spraying the treating composition onto a surface of a metal article at a particle velocity of over about 50 m/sec to about 1200 m/sec thereby depositing a layer of the metal halide particles on the surface.
A method of adhering flux to a metal article comprising the steps of:
- a) coating a metal article with flux;
- and
- b) heating the flux coated metal article to an elevated temperature for a period of time whereby the flux adheres to the metal article,
- wherein said coating step comprises spraying the metal article with a composition including gas and flux at a velocity of over about 50 m/sec.
A method of treating a surface of a metal article comprising the steps of:
- a) providing a treating composition including a gas and metal halide particles;
- b) spraying the treating composition onto a surface of a metal article at a particle velocity of over about 50 m/sec to about 1200 m/sec thereby depositing a layer of the metal halide particles on the surface;
- and
- c) heating the metal article to an elevated temperature for a period of time whereby the metal halide particles adhere to the surface.
Dependencies are inferred from the claim text.