The term for welding and metallurgy is brazed- braised is a cooking term, a braised beef roast perhaps. In the art of joining metals, soldering- silver soldering is the least of the temperatures involved- the base or parent metal(s)are not normally distorted due to low heat input and usage of flux. The next level is brazing, a higher heat input is involved, and flux used as well-usually a coating on the bronze alloyed rod- in both methods, the dimensions of the parent metal(s) will distact to some extent the heat input and the diameter of the filler rod used- a larger dia. filler rod will require more heat to "break down" and flow-- Remember, a neutral flame from an oxy-acetylene torch will reach 6000 degrees at the cone of the neutral flame-
Welding would not normally be used in barrel-lug-rib joining, as whether fusion or with filler rod added (TIG) the parent metal approaches its critical temperature in the HAZ- heat affected zone, and distortion may occur- with a barrel, as with a section of schedule pipe- this can rsult in a severe "out of round" condition unless precautions are taken--
