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Old 02-18-2019, 04:44 PM
Sarky13 Sarky13 is offline
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Default Is this salvageable? If so, please advise. Ugly Tig weld

I had a stainless keg cnc machined for precise holes to have stainless ferrules sanitary Tig welded in place for a unitank to be used in beer fermentation. I'm no expert, but I think I paid a welder who never should have taken this on.
Is there anything that can be done to fix the welds? Clean and passivate? Or scrap it
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  #2  
Old 02-18-2019, 06:03 PM
Sarky13 Sarky13 is offline
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Default Is this salvageable? If so, please advise. Ugly Tig weld

Is there any way to clean and salvage this work?
This is for a unitank fermentor. Used in home brewing. I've got a bad feeling I wasted money on this weld job.
Any advice would be awesome
Thanks
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Old 02-18-2019, 06:11 PM
Vulconel Vulconel is offline
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Wait, you paid someone for that?

Unfortunately probably unsalvageable at this point, especially for a food grade tank.
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Old 02-18-2019, 06:13 PM
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milomilo milomilo is offline
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If you paid someone to that you should ask for your money back. It can be salvaged by grinding out most of the weld and running a new pass.
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Old 02-18-2019, 06:35 PM
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Quote:
Originally Posted by Vulconel View Post
Wait, you paid someone for that?

Unfortunately probably unsalvageable at this point, especially for a food grade tank.
Ok, Now I feel like a professional welder after seeing that
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Old 02-18-2019, 07:05 PM
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Oy Vey!! That's about as bad a job of welding SS as I've ever seen. Salvageable? Well, yeah--just about any weld job can be "saved" if you have the time and money. Is it worth it? Probably not. By the time you grind everything off you'll likely be able to save the vessel itself but I'd sacrifice the fittings in order to do that. Obviously seeing the tank would give me a better idea.

We do a certain amount of sanitary work now--used to to a ton of it years ago. I have no idea what the fit was like for those welds but when you're dealing with light gauge SS the fit can be very important. To do a proper sanitary weld you need to purge the inside of the vessel or tube with argon, that way you'll get a perfect, clean seam on the inside as well.

I guess for a home brew setup as long as the thing doesn't leak you would be OK but--at least around here anyway--if a health inspector saw that he would immediately condemn the whole thing...
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Old 02-18-2019, 08:00 PM
Sarky13 Sarky13 is offline
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It's as bad as I feared. I went to pick it up and he had it in his living room in front of his wife. I was not wanting to have at it right then. I'm more than pissed. The keg can be replaced easy enough, but fittings and cancel cutting I'm out $200. Then "Tig practice" I'm out $260. I'll be doing my due diligence to collect that back. Thanks for confirming my fears. Live and learn. I just don't understand why the work was taken on after scope and expectations were clearly explained...
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Old 02-18-2019, 08:06 PM
Sarky13 Sarky13 is offline
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Quote:
Originally Posted by LKeithR View Post
Oy Vey!! That's about as bad a job of welding SS as I've ever seen. Salvageable? Well, yeah--just about any weld job can be "saved" if you have the time and money. Is it worth it? Probably not. By the time you grind everything off you'll likely be able to save the vessel itself but I'd sacrifice the fittings in order to do that. Obviously seeing the tank would give me a better idea.

We do a certain amount of sanitary work now--used to to a ton of it years ago. I have no idea what the fit was like for those welds but when you're dealing with light gauge SS the fit can be very important. To do a proper sanitary weld you need to purge the inside of the vessel or tube with argon, that way you'll get a perfect, clean seam on the inside as well.

I guess for a home brew setup as long as the thing doesn't leak you would be OK but--at least around here anyway--if a health inspector saw that he would immediately condemn the whole thing...
I really don't understand. The holes were cut precise through CNC. The fits are tight. The filler looked to be waaaay too thick and the heat too much. I grilled him before the job and said he used to weld sanitary stainless in dairy applications regularly. I the waste of time (his and my own). And especially the waste of money
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Old 02-18-2019, 09:53 PM
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Quote:
Originally Posted by Sarky13 View Post
...The filler looked to be waaaay too thick and the heat too much...
Thing is, with a properly fitted and back-purged weld you don't normally need filler.

Quote:
...I grilled him before the job and said he used to weld sanitary stainless in dairy applications regularly...
Must have been a long time ago. I think he's lost his touch... My brother is 69, can't see near as well as he used to and is a lot shakier than he once was but just last week we did a small sanitary job and the welds came out just fine...
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Old 02-18-2019, 10:05 PM
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Quote:
Originally Posted by Sarky13 View Post
I really don't understand. The holes were cut precise through CNC. The fits are tight. The filler looked to be waaaay too thick and the heat too much. I grilled him before the job and said he used to weld sanitary stainless in dairy applications regularly. I the waste of time (his and my own). And especially the waste of money
Ya he welded on dairy stuff. If he was good he would still be doing it.
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