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Recent content by WeldAppEng

  1. WeldAppEng

    Shielding gas change: Essential Variable requirements

    Well that may be. I can think that the only reason said mechanicals might be better than normal would be a slight removal of oxygen from the shielding gas itself due to the NO..? No-one really knows at this point. Still thanx guys for the commentary.
  2. WeldAppEng

    ASME IX - Contact Tube to Work Distance

    Stanweld..that actually surprises me that there is not. Wont the same principals apply with a GTAW torch as with stick and mig.?? pull back and amps drop off - volts go up. That has to have some effect although I can see that because it is a process where the arc itself is not part of the...
  3. WeldAppEng

    Shielding gas change: Essential Variable requirements

    kiwi..I truly appreciate the response. But as I noted the only addition to the mix is 275ppm of an additive. Not even close to 1%.! The additive is NO (Nitric Oxide), It is added to the gas mix to reduce Ozone which is generated via ultra violet rays in the 100-200nM range generated by the...
  4. WeldAppEng

    Shielding gas change: Essential Variable requirements

    I work for a global Gas Manufacturer/Supplier and have a question re: Sect IV. What is the threshold of change or allowable deviation in a shielding gas mixture that would not invoke the essence of it being considered an essential variable.? Example: Root runs with GMAW process using either...

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