What is welding?

Welding is a metal joining process that uses heat, with or without pressure, and with or without a filler metal, to obtain coalescence between two compatible metals. This process happens at an atomic level and requires that the materials to be clean and free from oxidation. If the metals are not compatible, a copper to steel joint for instance, then a brazing or soldering type process must be used.

Since it’s possible to weld using either pressure, temperature, or a combination of both, several different welding processes have been developed to take advantage of this. The main types are:

 

  • Brazing
  • Forge Welding
  • Gas Welding
  • Resistance Welding
  • Induction welding
  • Arc Welding
  • Special Processes

 

Regardless of the process, the end result of any welding operation is the joining of metals.

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