Wide application of brazing

 Brazing is not suitable for welding general steel structures and heavy-duty and dynamic-loaded parts. It is mainly used to manufacture precision instruments, electrical parts, dissimilar metal components, and complex thin plate structures, such as sandwich components, honeycomb structures, etc. It is also commonly used for brazing various types of abnormal wires and carbide tools. During brazing, after cleaning the contact surface of the workpiece to be brazed, it is assembled in the form of overlap, and the brazing material is placed near the joint gap or directly into the joint gap. When the workpiece and the solder are heated to a temperature slightly higher than the melting temperature of the solder, the solder will melt and infiltrate the surface of the solder. The liquid solder will flow and spread along the joint by means of capillary action. Then the metal to be brazed and the brazing filler metal dissolve each other, penetrate each other to form an alloy layer, and form a brazed joint after condensing. Brazing has been widely used in machinery, electrical machinery, instrumentation, radio and other sectors. Carbide cutting tools, drilling bits, bicycle frames, heat exchangers, pipes and various containers, etc.; in the manufacture of microwave waveguides, electronic tubes and electronic vacuum devices, brazing is even the only possible connection method.