A group of welding processes for joining metallic surfaces by heating them to suitable temperature and using a filler metal having a liquidus state not exceeding 450 C and below the solidus of the base materials. The filler metal is distributed between the closely fitted surfaces of the joint by capillary action.

Historical Notes

  1. 3000BC Evidence of soldering being used in Iraq.


Joining two pieces of metal together by placing solder between them and then clamping them tightly together while heat is applied.

See also: American Welding Society, Brazing, Flux, Heat Shunt, Infrared Reflow, Laser Soldering, Reflow Soldering, Solder, Solder Balls, Solder Mask, Solder Paste, Soldering Iron.

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Subjects: Electronics Mechanical Engineering