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Three Basic Types of Welding

  • Gas – Slower and easier to control than electric arc. Uses gas flame over metals until molten puddle is formed. Most popular fuels used with oxygen include acetylene, mapp gas, and hydrogen.
  • Arc – Two metals are joined by generating an electric arc between a covered metal electrode and the base metal.

Oxygen and Arc Cutting – Metal cutting in welding is the severing or removal of metal by a flame or arc.