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TIG welding with AC

  1. Apr 5, 2009 #1
    I know AC is used for welding of Aluminum or materials that have oxide layer on the surface
    Books also tell me that the oxide layer is cleaned by AC
    However, what is the exact mechanism of this cleaning action? Besides, where does the oxide gone? Vaporized? Dissolved?
  2. jcsd
  3. Apr 6, 2009 #2
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