Brazing is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, the filler metal having a lower melting point than the adjoining metal. The non-ferrous filler metal alloy is usually heated to melting temperature above 430 °C ( 800°F).

The brazing process can make a use of different heat sources such as flame, induction, resistance, furnace, vacuum...

You will need to use a flux to remove and prevent the reformulation of surface oxides on the base metals.

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The brazing process produces strong joints, sealed and leak-proof joints.

Brazing uses filler metals in solid forms ( such as rings, shims, rods, wires...) as well as in paste form. A proper brazed joint begins with a good joint design. Different specifications need to be met such as electrical conductivity, corrosion resistance, pressure tightness, mechanical performance, temperature sustainability. 

Brazing is preferred to welding when it comes to high production rates usually on non-ferrous materials. 

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