Gas tank build.

[Shield Arc]

Give it a go. Start a thread on your build, we can talk you through it.

 

[Big Barn]

Thanks for the support.
I came across this welder on Saturday, and couldn't resist.




Terry

 

[Silvic]

Wow! Does that require and do you have 3 phase?

 

[Shield Arc]

I know I've used Syncrowaves in the past. But I don't think Ive ever seen one that big before!

 

[Big Barn]

Wow! Does that require and do you have 3 phase?

This one runs on 220V. But I do have 3 phase here on the farm. Terry

 

[blueriver]

Not too bad for a rookie .... glad to see you sharpening up your skills .... I really enjoyed your comment about 3/8" being sheetmetal!!!

Of all the jobs and all the places which one is the one that just sticks out in your mind?

 

[Mysfyt]

Did you use backing gas when you tig welded the tank? What filler rod? Very eye pleasing!

How is your lathe project progressing?

 

[Mysfyt]

Thanks for the support.
I came across this welder on Saturday, and couldn't resist.


View attachment 440072

 

[Shield Arc]

Not too bad for a rookie .... glad to see you sharpening up your skills .

Yeah, us hobbyist need all the practice we can get.

Did you use backing gas when you tig welded the tank? What filler rod? Very eye pleasing!

No backing gas, if it was stainless steel I would have purge the tank.
I used 1/16-inch E80S filler. I welded the outside first, of the bottom, sides, and ends. Then welded the inside. I just welded the outside of the top. I really lucked out, not one leak!

 

[Big Barn]

Mysfyt, at this point I don't know. I can phone Miller Support with the serial number to see if it was installed at the factory. If not I'll have to take a look inside and compare with a parts diagram to see if it was installed later.

Terry

 

[Mysfyt]

Yeah, us hobbyist need all the practice we can get.



No backing gas, if it was stainless steel I would have purge the tank.
I used 1/16-inch E80S filler. I welded the outside first, of the bottom, sides, and ends. Then welded the
inside. I just welded the outside of the top. I really lucked out, not one leak!

I've fabricated a lot of fuel tanks and radiator overflow tanks that had to pass pressure test. We always put backing gas on them-that is why I asked. Just seemed to reduce the chance of leaks to almost zero. Used 1/16 x 309 filler rod. Just thought I'd pass this on.

 

[Mysfyt]

Mysfyt, at this point I don't know. I can phone Miller Support with the serial number to see if it was installed at the factory. If not I'll have to take a look inside and compare with a parts diagram to see if it was installed later.

Terry

Reason I ask is that it cuts down the input amps from something like 112 to 84 or there a bouts. I had to upgrade my Lincoln 275 wiring when tig welding aluminum because of the amperage draw tripping the breaker. Is that a chiller that came with it?

 

[Big Barn]

Yes. But it is only a one gallon unit. Haven't looked into it in depth but I would think it would be too small for production use ( which I won't be doing anyways).

Terry

 

[MillWeld]

I built a 20 gal gas caddy 5+ years ago from 1/8" steel. I welded it up, filled it with water making sure there were no voids, pressurized it to 60 psi (yes, 60) and hung it from a hoist to check for leaks. I found a few so I drained it, dried it and re-welded, refilled it with water for another check. Got it this time. No problem with leaks. I did a similar project to make a gas tank for my Ford tractor. Instead of buying an expensive 14 gal tank, I made a 9 gallon one. No leaks there either.

 

[Big Barn]

Yes. But it is only a one gallon unit. Haven't looked into it in depth but I would think it would be too small for production use ( which I won't be doing anyways). Terry

Just built a skid for the Syncro and was servicing the chiller. I was wrong, it's a two gallon unit.


Pretty pathetic when you start quoting yourself. Terry

 

[Mysfyt]

Sure looks clean!

 

[Jorville]

I built a 20 gal gas caddy 5+ years ago from 1/8" steel. I welded it up, filled it with water making sure there were no voids, pressurized it to 60 psi (yes, 60) and hung it from a hoist to check for leaks. I found a few so I drained it, dried it and re-welded, refilled it with water for another check. Got it this time. No problem with leaks. I did a similar project to make a gas tank for my Ford tractor. Instead of buying an expensive 14 gal tank, I made a 9 gallon one. No leaks there either.

View attachment 441296

When a tank is made like the way shield arc made the corner welds a torch or tig welder can be used to melt or roll the two edges together and make a nice looking weld. Using a torch or tig welder you can see what you are doing as the two edges of the sheet are welded together. once in awhile there will be a bad fit with a corner weld and a little filler rod will have to be used. Sometimes a little filler rod will be used to start the weld too get the edges to melt together. I made a hydraulic tank not too long ago with six pieces of sheet metal, and made the corners like shield arc and used a couple inches of filler rod to get the tank welded up all the way around. My sheet metal was a little thicker that shield arcs though. Did not need to pressure test it because I could see the weld as I was putting it in and I was confident that it would not leak. I used oxygen/acetylene torch because I don't have a tig set up yet. I will post some pictures of the tank when I can figure out how to get them from one place to another so I can post them.