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Defect cavity fill in

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  • Defect cavity fill in

    New person, not much input from other employees whats the best way to weld large cavities with 1/16 or 3/32 fcaw wire. I've seen a few people do it different ways, i was told it can be done 5 or 6 different ways, haveno clue, any advise would be helpfull.

  • #2
    Not sure of you question, believe they do not make 1/16 or 3/32 FLUX CORE (FCAW) wire....Most MIG wire is designated as decimal (.0xx) and not fractions (x/xx) ..

    And more details of what you are trying to fix would be helpful...
    Last edited by Dale M.; 04-21-2022, 08:46 AM.
    "Fear The Government That Wants To Take Your Guns" - Thomas Jefferson..


    • #3
      let me rephrase that, i've always and only know fcaw as dualshield with 1/16 amd 3/32 wire. A defect cavity in a casting to be more specific. What are the best ways to fill a cavity 6" x 4" by 3" deep with a flat bottom , putting in multi pass layers and must pass x-ray, 3/32 linde r-70 wire on a miller digital dual head wire feed system with co2.


      • #4
        The biggest impact is inter-pass cleaning. You need to make sure each pass is chipped and wire-brushed and that no slag ends up stuck to the toes of the welds. Other than that maintaining proper inter-pass temperatures and making sure the pre-heat and post weld cooling is appropriate for the base material.