Brazing is a joining process whereby a non-ferrous filler metal or alloy is heated to melting temperature (above 450°C; 800°F) and distributed between two or more close-fitting parts by capillary action. At its liquid temperature, the molten filler metal and flux interacts with a thin layer of the base metal, cooling to form an exceptionally strong, sealed joint due to grain structure interaction. The brazed joint becomes a sandwich of different layers, each metallurgically linked to the adjacent layers. Common brazements are about 1/3 as strong as the materials they join because the metals partially dissolve each other at the interface and usually the grain structure and joint alloy is uncontrolled. To create high-strength brazes, sometimes a brazement can be annealed, or cooled at a controlled rate, so that the joint's grain structure and alloying is controlled.

Brazing processes

Pinbrazing
Block Brazing
Diffusion Brazing
Dip Brazing
Exothermic Brazing
Flow Brazing
Furnace Brazing
Induction Brazing
Infrared Brazing
Resistance Brazing
Torch Brazing
Twin Carbon Arc Brazing
Vacuum Brazing

Related Topics: brazing process, brazing paste, brazing soldering, Braze welding