With a lower melting point than the base metal material as the brazing filler metal with a liquid wetting the base metal and solder filling the gap and the workpiece interface, and the base material to mutual diffusion soldering method. Deformation brazing, the joint is smooth and beautiful, suitable for welding sophisticated, complex and components composed of different materials, such as honeycomb panels, turbine blades, carbide tool and the printed circuit board. Before Copper Brazing Alloys  workpiece must be strict and meticulous processing and cleaning, to remove oil and over-thick oxide film, ensure that the interface assembly space. General requirements for clearance of 0.01 to 0.1 mm.