Brazing on TOP of solder

[bittan]

I think is a silly topic. BUT we have a few techs that try to repair a bad/leaking solder joint by brazing over it. I have NEVER heard of this and do NOT think it should be done. Had a mess of a repair today. Cut out a bad section. Swedged and fit a new section of suction line and finally brazed it while purging with nitrogen. Talked to the monkey which attempted the horrible repair, and he said he always does it. Again, I never read (or heard) that this can be done.

[BobbyBJr]

Depends on the situation and such, but yeah, I have done it. I have also took the time to cut them out and braze when I needed to.

Bobby

[Wirenut]

I have brazed over a solder joint during a repair, but as BobbyBjr said it isn't always the repair of choice and most times it just best to cut the bad joint out and start over.

[Freezeking2000]

I do it all the time! Sometimes it takes well, athers you have to heat it up twice for it to take!

[t527ed]

not proud to admit but i have also done it to get out of a pinch. clean up real good and use white paste flux. usually looks pretty good can't remember ever having one i left that way leak. no more of a hack job than the a-hole that stay brited it in the first place.

[targetman]

We do it when needed.

[junkhound]

Fortunately, have never had to do it on a refrigeration line, but use braze over solder as an easy fix on circulating water lines often. Most joints are real easy to fix with braze, but some of the more corroded solder, where the solder joint was bad to start with, get a braze fillet between pipe and fitting (better than a good solder joint). Obviously, if pipe itself looks corroded, it gets replaced.

[bittan]

Thanks for the replies.

[edward301]

I have had to do this more times than I care to admit.
Heat the solder, use a wire brush to remove the solder,
do this many times, then when clean braze.

I have not had to go back and redo one, yet.