Any tips on how to braze 2 7/8 to 4 inch OD ( 1/4 inch wall ) using a oxy/ace outfit.
What size of tip?
What should my oxy/ace be set to 3psi?
What should I use for my solder?
What is the techique?
Or am I wasting my time? I don't have a stick welder and can't afford one at this time ( a good welder ). I thought about renting one but it's been 15-20 years since I've burned any rods. I would be lucky if I could remeber how to strike an arc at this point
Lots of tubes have been brazed for heavy duty applications, but the fumes from the flux aren't conducive to good vision while brazing, and I think brazing is harder to learn than welding. I agree with Dave, I think it would be easier to weld it.
Victor recommends the following pressures depending on tip size and metal being welded:
#3 tip for 1/8"-3/16" thick set Oxygen 4-7 and Acetylene 3-6
#4 tip for 3/16"-1/4" thick, set Oxygen 5-10 and Acetylene 4-7
#5 tip for 1/4"-1/2" thick, set Oxygen 6-12 and Acetylene 5-8
I got this from their Acetylene welding nozzle and cutting tip pocket data card. Their part # is 56-0411. Got it free from a welding supply several years ago. Data is close enough for most torches.