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Flux Cores getting me down...

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  • #16
    are you keeping the same distance from tip to work as with short arc, fc likes more of a stick out, from all of the fc that i have ran in the past, if i started it with a short stick out, it will burn into the tip, i used about 3/4" for a stick out, hope this helps, my experience was about a 27 years ago welding ships, not to sure if it has changed all that much

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    • #17
      Originally posted by aametalmaster View Post
      Are your drive wheels knurled? I think smooth would be better...Bob
      I use v-groove knurled drive rolls for all flux core (with or without gas). It lets you use less tension on the rolls so as to not crush the wire.
      MM250
      Trailblazer 250g
      22a feeder
      Lincoln ac/dc 225
      Victor O/A
      MM200 black face
      Whitney 30 ton hydraulic punch
      Lown 1/8x 36" power roller
      Arco roto-phase model M
      Vectrax 7x12 band saw
      Miller spectrum 875
      30a spoolgun w/wc-24
      Syncrowave 250
      RCCS-14

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      • #18
        Originally posted by apg1984 View Post
        I'm running 035 with a 15' miller lead. Are you suggesting i use a 045 liner with the 035 wire? i have my clamp as loose as it will go thats why i just dont see how its rats nesting so quick... I put a brand new liner in it when i switched to the flux. do you think the knurled wheels are pushing the wire to aggrsively. when i run mig its like you said it will slip and not tangle. its so frustrating.
        No not suggesting that at all. When I run .035 wire in my gun with the .045 liner I do have some problems. The .035 flux wire is not as strong as solid which is why it birdsnests. If you are welding say 1/8" & up material switch to .045. You would also need the correct size liner. In general terms with flux core you can step up a size over solid because there is less material since the wire is hollow. So if you would normally use .035 go to .045.

        What happens is the wire sticks in the tip & the rolls keep pushing so it is birdsnest between the rolls & where it enters the gun. Make sure your wire guide, rolls etc. are all lined up correctly & the gun is as close to rolls as it can be. You can also try anti-spatter spray on your nozzle.

        You also need the spacer to keep the roll of wire tight. It should be a spring but you can even use a pc. of pipe or pvc pipe cut to the right size.
        Last edited by MMW; 03-20-2012, 05:33 AM.
        MM250
        Trailblazer 250g
        22a feeder
        Lincoln ac/dc 225
        Victor O/A
        MM200 black face
        Whitney 30 ton hydraulic punch
        Lown 1/8x 36" power roller
        Arco roto-phase model M
        Vectrax 7x12 band saw
        Miller spectrum 875
        30a spoolgun w/wc-24
        Syncrowave 250
        RCCS-14

        Comment


        • #19
          Originally posted by MMW View Post
          I use v-groove knurled drive rolls for all flux core (with or without gas). It lets you use less tension on the rolls so as to not crush the wire.
          Well today the shop electrician added a longer ground from the 8'3" one that came on the machine. So that let me push the welder back so the gun was straight and i had zero problems it ran like it should have...Bob
          Bob Wright

          Spool Gun conversion. How To Do It. Below.
          http://www.millerwelds.com/resources...php?albumid=48

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