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  • What gas?

    I have been welding with a HH135 for 2yrs now with flux and finally growing out of it. I have used this machine and a Miller 250 tig (water cooled torch and foot pedal, talk about being spoiled), but the Miller is not mine and I cannot afford one right now. I am leaning on purchasing a HH210, so I can weld steel, stainless and a thin aluminum. I weld mostly steel, but I make a lot of bracketry from stainless and aluminum. Can I get away with only one or two bottles and what mixtures do I need? What wire do you use for stainless with a mig?
    HH 135
    Parker Plasma Tec-40sv

    Next purchase will be a HH210.

  • #2
    hey there. you'll be best with C25 (75% argon, 25% CO2) for the steel, straight argon for the aluminum. don't know about the stainless. hope this helps.
    5 rules for happiness:

    1. free your heart from hatred
    2. free your mind from worries
    3. live simply
    4. give more
    5. expect less


    milwaukee 12 amp 4.5" angle grinder
    Rigid chop saw
    Rigid 3" drill press
    4 X 6 horizontal band saw
    porter cable 1410 dry cut saw
    milwaukee 8" metal cutting circular saw
    Van Sant 1 HP multi-tool/grinder
    O/A setup
    TA 185
    MM 212
    Cutmaster 52

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    • #3
      Click the 'e-Learning' tab at the top of the page and check out the mig section. It explains gasses and wires and amperages and all kinds of stuff for various metals. Good stuff in there!
      I NEED MORE COWBELL!!!


      'Red' Powcon 300ST (no torch yet)
      (ok, not really a 'Red'... )
      'Blue' Miller 35 (older than me and runs great), Thunderbolt AC arc (ditto)
      'Craftsman' AC arc (who made this originally?)
      O/A x 2 (both smaller than I'd like)
      14" Milwaukee chopper
      20t HF press (crap, but works)
      Buffalo forge w/ blower
      Alot of pumps!

      "All of us know more than any of us."- TexHand

      Comment


      • #4
        007,

        C-25 will work for MS and stainless. Tri-mix is the "darling" SS gas, but I never bought any, and SS welds fine with C-25 as far as I'm concerned.

        For SS, you use SS wire! Either 308, 309, or 316, depending on what you're welding. 308 is all I have, but I don't do much SS.

        You'll need 100% Argon for the aluminim, though.
        ...from the Gadget Garage
        MM 210 w/3035, BWE
        HH 210 w/DP 3035
        TA185TSW
        Victor O/A "J" series, SuperRange
        Avatar courtesy of Bob Sigmon...

        Comment


        • #5
          My friend uses Argon for stainless, aluminum and steel with his tig, I didn't know if it was the same for Mig or why the difference, and I don't want to buy three different bottles when welding one or the other.

          LOL of the SS wire for SS, figured that much, just thought there was more specifics on what is most used etc.
          HH 135
          Parker Plasma Tec-40sv

          Next purchase will be a HH210.

          Comment


          • #6
            Aggie,

            I would recommend the use of C25 (75%Argon/25%CO2) for GMAW (short circuit) steel. A lot of people use straight CO2, which can be cheaper, but I've gotten better results with C25.

            Straight Argon should be used for aluminum.

            A 98/02 mix (Argon/Oxygen) is recommended for Stainless. As mentioned, C25 can be used, but the introduction of Carbon (CO2) into the weld will reduce the benefit of using stainless in the first place (think carbon steel--rust). Straight Argon requires additional amps to wet out the puddle--the Oxygen seems to add a little "heat".

            Just my .02
            SundownIII

            Syncrowave 250DX, Tigrunner
            Dynasty 200 DX w/CM 3
            MM 251 w/30 A SG
            HH 187 Mig
            XMT 304 w/714D Feeder & Optima Pulser
            Dialarc 250 w/HF 15-1
            Hypertherm PM 1250 Plasma
            Victor, Harris, and Smith O/A
            PC Dry Cut Saw and (just added) Wilton (7x12) BS
            Mil Mod 6370-21 Metal Cut Saw
            More grinders than hands (Makita & Dewalt)
            Grizzly 6"x48" Belt Sander
            Access to full fab shop w/CNC Plasma & Waterjet
            Gas mixers (Smith(2) and Thermco)
            Miller BWE and BWE Dig

            Comment


            • #7
              The difference between TIG and MIG is that, in the GTAW process, the elctrode is not consumed. All that is needed is the exclusion of atmospheric gases from the weld area by a covering of an inert gas. The arc heat causes the base metals and filler, when added, to fuse.

              In GMAW, the electrode is consumed, and becomes the filler as well. Atmospheric gases are still excluded, but due to the chemical makeup of the electrode wire, a reactive gas is needed to maintin the balance of the weld metalurgy. 100% CO² is totally acceptable for GMAW.

              Hope that made sense.

              Also, you can MIG weld stainless with mild steel filler, and vice versa. The mild steel welded stainless will not be rustproof in the weld joint, but oherwise it will be fine.

              Hank
              ...from the Gadget Garage
              MM 210 w/3035, BWE
              HH 210 w/DP 3035
              TA185TSW
              Victor O/A "J" series, SuperRange
              Avatar courtesy of Bob Sigmon...

              Comment


              • #8
                To answer your question: tri mix is first choice and straight argon is second choice with ss.

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                • #9
                  Sounds like I can get away with a bottle of C25 for steel and a bottle of 100% Argon for stainless and aluminum.

                  Thanks for the help.

                  Hankj, how do you compare the Miller and the Hobart, which do you like better?
                  HH 135
                  Parker Plasma Tec-40sv

                  Next purchase will be a HH210.

                  Comment


                  • #10
                    Originally posted by Aggie007 View Post
                    Sounds like I can get away with a bottle of C25 for steel and a bottle of 100% Argon for stainless and aluminum.

                    Thanks for the help.

                    Hankj, how do you compare the Miller and the Hobart, which do you like better?
                    argon won't work worth a darn on SS. The weld puddle wet out would be very sluggish. anything beyond thin sheet, lack of fusion issues would be a definite problem.

                    Compared to tri-mix, the arc characteristics of C-25 suck on SS. However, for single pass ss applications the C-25 is a far better choice then argon.
                    MigMaster 250- Smooth arc with a good touch of softness to it. Good weld puddle wetout. Light spatter producer.
                    Ironman 230 - Soft arc with a touch of agressiveness to it. Very good weld puddle wet out. Light spatter producer.


                    PM 180C



                    HH 125 EZ - impressive little fluxcore only unit

                    Comment


                    • #11
                      Originally posted by Aggie007 View Post
                      ...Hankj, how do you compare the Miller and the Hobart, which do you like better?
                      The HH210 has a softer arc and is light enough to throw in the truck and run of a genny.

                      The MM210 is an industrial rated machine, and can weld all day if needed.

                      There's no real answer to your question. The two machines are not the same. The duty cycle on the Miller is higher.

                      I like them both, but for different reasons.

                      Hank
                      ...from the Gadget Garage
                      MM 210 w/3035, BWE
                      HH 210 w/DP 3035
                      TA185TSW
                      Victor O/A "J" series, SuperRange
                      Avatar courtesy of Bob Sigmon...

                      Comment


                      • #12
                        aggie007, FWIW, i recently purchased a MM 212. i like it. a lot. never used a hobart, so i don't have a basis for comparison. the miller has a higher duty cycle, is spoolgun ready, and has running gear installed.
                        5 rules for happiness:

                        1. free your heart from hatred
                        2. free your mind from worries
                        3. live simply
                        4. give more
                        5. expect less


                        milwaukee 12 amp 4.5" angle grinder
                        Rigid chop saw
                        Rigid 3" drill press
                        4 X 6 horizontal band saw
                        porter cable 1410 dry cut saw
                        milwaukee 8" metal cutting circular saw
                        Van Sant 1 HP multi-tool/grinder
                        O/A setup
                        TA 185
                        MM 212
                        Cutmaster 52

                        Comment


                        • #13
                          Originally posted by tigster View Post
                          aggie007, ....is spoolgun ready.
                          The HH210 is also spoolgun ready. It takes a DP3035 spoolgun. The difference is that the DP-version is a total replacement for the MIG gun, rather than a "plung n' play" arrangement like the MM210/212.

                          Hank
                          ...from the Gadget Garage
                          MM 210 w/3035, BWE
                          HH 210 w/DP 3035
                          TA185TSW
                          Victor O/A "J" series, SuperRange
                          Avatar courtesy of Bob Sigmon...

                          Comment

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