Historical Background
Variables in the Welding Process
Critical Factors in Welding
Electrodes, Surface Contact and Current Density
Ohm's and Joule's Laws
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Variables in the Welding Process

The many variables involved in welding can be broadly categorized into two basic sections: process variables and material variables.

Process variables include:

  • Weld current
  • Squeeze time
  • Weld time Hold time
  • Electrode force
  • Design of the electrode
  • Workpiece material

    Material variables include:

    • Coating thickness and type
    • Part fit-up
    • Surface condition & cleanliness of materials