Patent ID: 8740041

Claim:
A method for forming an extruded brazing ring with integrated flux, the method comprising: extruding a filler material from an extrusion unit to produce a tube with a c-shaped cross-sectional profile that includes a pair of opposing, non-contacting ends, the tube including a plurality of channels disposed in and open to a surface thereof, the channels extending parallel to the length of the tube; receiving the tube from the extrusion unit by a filling apparatus, the filling apparatus including a pressurized reservoir containing a fluxing product in a paste-like form, the tube being received in the reservoir to pass through the fluxing product; disposing the fluxing product in the plurality of channels, pressurization of the reservoir flowing the paste-like fluxing product into the channels as the tube passes through the reservoir; wiping at least a portion of the fluxing product from a surface of the tube by a wiping feature associated with the filling apparatus; heating the fluxing product in the channels to remove at least a portion of a solvent included in the fluxing product; and sectioning the tube perpendicularly to the length thereof.