Welding Process Classification

Welding Process Classification

Welding             

is the joining of two or more pieces of metal by applying heat or pressure, or both, with or without filler metal to produce a localized union through fusion or recrystallization across the interface"

Brazing

is the joining of metals by fusion of nonferrous alloys that have melting points above 425 degrees C (800 degrees F) but lower than those of the metals being joined.

 

Soldering

is done below 450 degrees C (840 degrees F)