Posted by trucker 40 on July 03, 2010 at 15:53:46 from (69.154.19.47):
In Reply to: I don't get it??? posted by 135 Fan on July 02, 2010 at 21:01:12:
I wouldnt bet that some of that stuff coming in here from China was any better than a patched tank.I didnt know he was using flux core and a 115 volt welder,it sounded like he had the wire speed too high.I would have to agree its not a good idea to weld an air tank with flux core.Also you need to know how to weld,that would help.
See though you have a problem where you think everything is too dangerous.Yeah it might not be a good idea for this guy to do it.However I think that there are people who would,and can weld very well.You might want to get a long ways away from it when you fill it up with air the first time,if you did patch your tank.
Im surprised JB Weld even worked on it for him.Ive welded air tanks on big trucks before.I just welded a patch on it,they usually are only rusty on the bottom.I cut a couple open years ago at first and they were rusty at the bottom,so I would get some metal that was the same thickness,beat it around the tank and weld it the whole length of the tank,with a big 220 MIG with CO2 gas.It always worked.I even have welded an air tank with 7018 and a portable welder.I wouldnt want to weld one with flux core and see what happened.I just welded another one a couple of months ago.I welded a big air compressor tank because a farmer wanted me to weld it a couple of years ago.I welded it by putting a patch on it with a MIG.I ask him when I see him if its still holding air,so far its been yes. I made a big air compressor one time with a 4 cylinder compressor from a hospital and an anhydrous tank.All I had was a 115 volt MIG with CO2 gas,and I had to weld a fitting in the tank to run an air line in and out of it.I welded it as hot as it would go.Never had any trouble with it.Another mechanic has it now,still using it every day and that was about 1987 when I welded it.
I also know this guy asking is not me either.I have no way of knowing whether he can weld or not unless he says so.Although I wouldnt want to give the impression that it was as big of a deal as you do about welding an air tank.Its not a big deal if you are a good welder.You would want to do a good job,and rounding the corners of the patch is good advice.I also try and make my patch to match the welds on the tank already,and weld my new weld over the old one, or right next to it,but you will still have one side thats by its self most of the time.
Welding an air tank bothers me way less than welding a fuel tank.
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