Page 59 - Electrician - TT (Volume 1)
P. 59

ELECTRICIAN - CITS




           Brazing
           It is the metal joining process by melting a filler metal in to the joint having a lower melting point than the joined
           metal. The working temperature of brazing is above 450°c and the working temperature of soldering is below
           450°c
























           Filler metal
                      Filler metal               Application
                      Nickel                     Alloy steel, Nickel / Cobalt alloys, Copper alloys
                      Cobalt                     Cobalt alloys

                      Aluminium                  Aluminium alloys
                      Copper                     Alloy steel, Copper alloys, Cast iron, Stainless steel


           Flux used
                      White brazing flux         Black brazing flux

                      Composition of potassium   It is white brazing flux with more Boron
                      salts and Boron
                      High cost                  High cost

































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                                    CITS : Power - Electrician & Wireman - Lesson 5 - 12
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