Characteristics of brazing

 Characteristics of brazing:

1. The surface of the joint is smooth and clean, the air tightness is good, the shape and size are stable, the structure and performance of the weldment have little change, and the same or different metals and some non-metals can be connected. When brazing, heating the workpiece as a whole can also be used to weld many welds at one time, which improves productivity. However, the strength of brazed joints is low, and lap joints are often used to increase the strength of the joint by increasing the length of the lap; in addition, the preparation work before brazing requires higher.

2. The solder melts but the weldment does not melt. In order to make the brazing part firmly connected and enhance the adhesion of the brazing material, brazing flux should be used during brazing to remove the oxides on the surface of the brazing material and the weldment.

3. The brazing filler metal has high strength and can be used to connect load-bearing parts. It is widely used, such as cemented carbide cutting tools and bicycle frames. Soft solder, low welding strength, is mainly used for welding parts that do not bear load but require good sealing, such as containers, instrument components, etc.