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argon backing for stainless

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  • #16
    I would switch to .035 wire.

    The tube looks fine. Should work.
    MM250
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    • #17
      argon backing for stainless

      If I was just joining the parts, I may use a smaller filler rod. But since I need a small lip around the edge, I'm just gonna run a nice bead around and that should work.

      It's a replacement top for a cooler for one of the local restaurants. It'll just slide right over the existing top and screw right down. Has a built in cutting board on the front. There is a door to the cooler that sits on top and slides off for access to the inside along with the storage access in the front. I've test for it twice. So as long as I don't completely twist it out of shape, it should fit nicely. I'll try an remember to snap a couple pictures when I'm done.

      So far, my fancy little argon backer doohickey works excellent, except for the times I forgot to turn it on. Blows through some argon quick though. I got about 2/3 the way done and I'm not sure my bottle will make it! Two welds 48" and two 21", so I'm back stepping my way around.

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      • #18
        That fixture you made as a device to shield the back of the weld looks awesome. For the next time I would contact Solar Flux and ask them for a sample. I have used it in the past and had great results though it never was for food grade projects. It did work well for me and there are certain applications that you might not be able to back gas. Try it on a coupon. Just a thought.
        Nick
        Last edited by kiwi; 07-28-2015, 06:26 AM.

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        • #19
          How small of a bottle are you using? I purge at 10-15 from the same 330 CF bottle I run the torch from and weld all day.
          Stainless process piping - welder & fitter

          Miller Dynasty 280DX
          Jet band saw
          Dewalt chop saw
          Assorted IR air tools and Metabos

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          • #20
            argon backing for stainless

            That's the same size bottle I use. I'm welding with 15 CFH and back purging at the same rate so my consumption has increased. Plus I only had 1/3rd of a cylinder left when I started.

            I think I'll take a look at that solar flux, I'm willing to give most things a fair shot.

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            • #21
              Originally posted by ryanjones2150 View Post
              That's the same size bottle I use. I'm welding with 15 CFH and back purging at the same rate so my consumption has increased. Plus I only had 1/3rd of a cylinder left when I started.

              I think I'll take a look at that solar flux, I'm willing to give most things a fair shot.
              At 30 CFH your bottle would last you 10+ hours of 100% duty cycle use... The issue is not having a spare bottle on hand then, not the size of it heh.
              Stainless process piping - welder & fitter

              Miller Dynasty 280DX
              Jet band saw
              Dewalt chop saw
              Assorted IR air tools and Metabos

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              • #22
                argon backing for stainless

                Get either flux cored tig wire or flux coated tig wire.

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                • #23
                  Originally posted by Nathan128 View Post
                  Get either flux cored tig wire or flux coated tig wire.
                  Where do you get that..?? who makes fluxed SS TIG wire..??

                  have never seen it....
                  .

                  *******************************************
                  The more you know, The better you know, How little you know

                  “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                  Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                  My Blue Stuff:
                  Dynasty 350DX Tigrunner
                  Dynasty 200DX
                  Millermatic 350P w/25ft Alumapro & 30A
                  Millermatic 200

                  TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

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                  • #24
                    argon backing for stainless

                    To be honest I'm not sure who makes it I've just seen it done and it does a nice job

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                    • #25
                      argon backing for stainless

                      Found why my gas was going so fast...the valve body was loose on that brass fitting I screwed into the back purge doodad. Since I live on the sun here (gulf coast of Texas) and my shop isn't air conditioned, I couldn't hear the leak until this morning when I turned on the gas cylinder before my vent fan and squirrel cage. A quick twist with the adjustable wrench cured that problem.

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                      • #26
                        Originally posted by H80N View Post
                        Where do you get that..?? who makes fluxed SS TIG wire..??

                        have never seen it....
                        I don"t know zip about them but they do exist. Google "fluxed stainless tig wire" or something similar.

                        http://www.welding-alloys.com/produc...w-product.html

                        http://www.weldingwire.com/Images/In...ored%20tig.pdf
                        ---Meltedmetal

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                        • #27
                          Originally posted by Meltedmetal View Post
                          I don"t know zip about them but they do exist. Google "fluxed stainless tig wire" or something similar.

                          http://www.welding-alloys.com/produc...w-product.html

                          http://www.weldingwire.com/Images/In...ored%20tig.pdf
                          How about that....

                          I had never heard of them...

                          Fluxcore MIG wire... yes.. but not fluxed TIG wire..

                          Cool..will have to get some and try it out....

                          learn something new every day... THANKS..!!..
                          Last edited by H80N; 07-29-2015, 08:09 AM.
                          .

                          *******************************************
                          The more you know, The better you know, How little you know

                          “The bitterness of poor quality remains long after the sweetness of low price is forgotten”

                          Buy the best tools you can afford.. Learn to use them to the best of your ability.. and take care of them...

                          My Blue Stuff:
                          Dynasty 350DX Tigrunner
                          Dynasty 200DX
                          Millermatic 350P w/25ft Alumapro & 30A
                          Millermatic 200

                          TONS of Non-Blue Equip, plus CNC Mill, Lathes & a Plasmacam w/ PowerMax-1000

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                          • #28
                            Flux cored TIG wire

                            Originally posted by Meltedmetal View Post
                            I don"t know zip about them but they do exist. Google "fluxed stainless tig wire" or something similar.

                            http://www.welding-alloys.com/produc...w-product.html

                            http://www.weldingwire.com/Images/In...ored%20tig.pdf
                            Very interesting, watched the video, my question is what about the next pass, you're still going to need a back purge.
                            Richard
                            West coast of Florida

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                            • #29
                              argon backing for stainless

                              Very interesting video. I watched it whilst having a cup of afternoon tea.

                              I don't do that sort of welding, but I can see where it would help for sure. I'd be interested in trying it, but I doubt I'll really have a use for it. I notice the video only mentions the flux eliminating the discoloration of the weld. I wonder if it has any effect on the sugaring of the backside of weld though? I don't have circumstances where a nice straw or salmon color on the welds is unacceptable. Even if I did, nothing some wire brushing won't cure.

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