welding unit

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4 Terms

1
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List three polarities used in welding.

  1. DCEP (Direct Current Electrode Positive)

  2. AC (Alternating Current)

  3. DCEN (Direct Current Electrode Negative)

2
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Trace the SMAW Weld Circuit.

  1. AC or DC (Welding Machine)
  2. Electrode cable
  3. Electrode holder
  4. Electrode
  5. Arc
  6. Work cable
  7. AC or DC (Welding Machine)
3
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In the electrode designation E7018, what does the initial 'E' stand for?

Electrode

4
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In the electrode designation E7018, what does the number "70" represent?

The "70" in E7018 indicates that the weld metal has a minimum tensile strength of 70,000 psi (pounds per square inch).