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  1. #1
    Join Date
    Jan 2008
    Location
    In wal-mart
    Posts
    460

    Default Tig welds with my new ghetto back purge assembly!

    Yep, here you go
    The stainless steel magnetic parts dish cost me $4.92, and all I did was rip off the rubber on the bottom, and then rip off the magnet, and all that was left was the dish in this picture. I then drilled two holes, one to accept the tip of the argon hose, and then drilled a smaller hole for the argon gas to vent a little so that dish would blow off once I taped her up on the outside edges to make a airtight seal. The tape holds during the entire weld, and even after your done, it doesnt get hot enough for the tape to seperate. I then folded the dish in half a little, making sure my fold crease ran horizontal to my holes at the top. The reason I put the holes at the top, and why I tape it up that way because argon is a heavy gas, and while I purge, the heavy gas floats to the bottom pushing any oxygen out the top small hole, thus filling the compartment with argon. Here are the pictures.





    Here are my welds
    This picture here is of the inside of a keg I tig welded yesterday back purging with argon, with a back purging assembly I put together for no more than $10 at walmart.

  2. #2
    Join Date
    Jan 2008
    Location
    In wal-mart
    Posts
    460

    Default

    Here is the outside tig welded fittings of the keg



    Here is the finished product, a keg built to specs of a sabco kettle without the tri-clover fittings

  3. #3
    Join Date
    Nov 2006
    Location
    toronto,ontario
    Posts
    90

    Default

    good idea buddy looks good,what diameter filler are you useing? your welds are good just add a little more filler to the puddle and your bang on the money ,keep it up

  4. #4
    Join Date
    Jan 2008
    Location
    In wal-mart
    Posts
    460

    Default

    Im using a 1/16th tungsten, using a pedal set to a max of 90 amps. The keg metal thickness is 3/32 ", and Im using a 3/32 filler rod. Should I be moving faster?, is that the reason I look really concave?

  5. #5
    Join Date
    Nov 2006
    Location
    toronto,ontario
    Posts
    90

    Default

    no its not about your travel speed bro just add more filler to the joint, you can go over that joint again and just add filler and it would look better too.And you dont need to purge when your root is already closed ,but it looks good

  6. #6
    Join Date
    Jan 2008
    Location
    In wal-mart
    Posts
    460

    Default

    Quote Originally Posted by man of steel View Post
    no its not about your travel speed bro just add more filler to the joint, you can go over that joint again and just add filler and it would look better too.And you dont need to purge when your root is already closed ,but it looks good


    Thank you. I dont understand about the closed root thing. If Im hearing you correctly, I dont need to purge if my parts fit super snug right? How come I get sugaring on the back when running a short bead on a solid piece of stainless? I may be interperating you wrong, sorry in advance.

  7. #7
    Join Date
    Oct 2007
    Location
    Mt. Clemens, Michigan
    Posts
    277

    Default

    Quote Originally Posted by usmcruz View Post
    Thank you. I dont understand about the closed root thing. If Im hearing you correctly, I dont need to purge if my parts fit super snug right? How come I get sugaring on the back when running a short bead on a solid piece of stainless? I may be interperating you wrong, sorry in advance.
    If the backside of the joint is protected from the atmosphere, you don't need to purge it. But it doesn't hurt on something that is thin, if you burn through a little you'll still be protected on the back. If you're getting sugaring on the back of the stainless you're too hot, or too slow, or both. You don't want to burn through the back side.

    -Josh

  8. #8
    Join Date
    Jan 2008
    Location
    In wal-mart
    Posts
    460

    Default

    Quote Originally Posted by jdustu View Post
    If the backside of the joint is protected from the atmosphere, you don't need to purge it. But it doesn't hurt on something that is thin, if you burn through a little you'll still be protected on the back. If you're getting sugaring on the back of the stainless you're too hot, or too slow, or both. You don't want to burn through the back side.

    -Josh

    Thanks allot buddy, I will try that next time and save my argon. Again thanks for the info, Im learning allot from these boards.

  9. #9
    Join Date
    May 2008
    Location
    Austin Tx.
    Posts
    101

    Thumbs up That is cool

    As a former homebrewer now small vineyard owner and winemaker, that is really cool to me that you can do that.
    I still subscribe to a h.b. discussion group and am always seeing people asking "who can weld the fittings to the brew kegs?"
    I like your other thread about building the all grain rig.
    Randall
    AusTex.
    p.s. thanks for serving your country !!!!

  10. #10
    Join Date
    Aug 2006
    Location
    near rochester NY
    Posts
    9,881

    Question

    usmcruz
    he is saying you don't need to back purge when you wash over it to build up the bead. even on a tight fit you better purge. any time the back gets to melting( or close) you need purge. but with the weld done just going back over it with low heat to build up the back side wont get that hot, so no purge is needed.
    nice job, and cool purge system. did you use 2 tanks or a splitter and 2 gages off one tank ?? i'm looking to get a T splitter tomorrow so i can run 2 gages off one tank. that way i can use the other tank for Try-MIX and MIG with it.
    keep in mind gas is expensive, but not near as expensive as screwing up and having to cut out and start over.
    its concave because it needs more filler. i find aluminum to be bad for that, more of a push it in rather than dab with aluminum.
    fendermender
    As a former home-brewer now small vineyard owner and winemaker
    got a simple recipe, i would love to brew up a little wine. did some as a kid with my step mom.some kind of little red berries. seems like we did it in glass with cheese cloth over it. but its been a wile.
    i was thinking maybe raspberry or black berry would be cool to brew from.
    know of a good book or source on home brew??
    thanks for the help
    ......or..........
    hope i helped

    feel free to shoot me an e-mail direct i have time to chat. james@newyorkmetalart.com
    summer is here, plant a tree. if you don't have space or time to plant one sponsor some one else to plant one for you. a tree is an investment in our planet, help it out.
    JAMES

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