Silver Braze vs. Tig Welding
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 Tin Man 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
See also:
Welding: TIG vs. Gas
Silver Braze It
Brazing versus Soldering:
