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    Silver Braze vs. Tig

Hello, Could you explain THE DIFFERENCE IN SILVER BRAZE VERSUS TIG. WELDING, SUCH AS IN BOILER MANUFACTURE.
I UNDERSTAND THAT FIRE TUBES ARE SUPPOSED TO BE "ROLLED OR SILVER BRAZED" IN THE TUBE END SHEETS.
I HAVE EXPERIENCE WITH MIG, ARC, AND GAS WELDING. I HAVE NEVER DEALT WITH SILVER BRAZE. THANK YOU FOR YOUR RESPONSE, JERRY.

The Tinman Respondeth:

Jerry,
Silver brazing is done with oxy-acet. using a soft flame and large-ish tip. The BAg material can be bare w/ flux on the side, or flux-coated. It is usually thin-flowing, high strength, low-distortion with beautiful joints and penetration.

Perfect for thin metals in complex joints. Goes on at 1020F or so. Same elegant method used by the Brits on their tube-framed everythings- aircraft, racecars, motorcycles and bicycles.

The filler varies with application: more or less silver ($$$) and with or without nickel. Ever heard of the sheetmetal engine? Oakland, CA--1950? 4cyl Crosley. Best wishes, Kent

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