Brazing technologyrefers to a welding method where the filler metal, which has a melting point lower than that of the workpieces, and the workpieces are simultaneously heated to the melting temperature of the filler metal. This allows the liquid filler metal to fill the gaps in the solid workpieces, creating a metal connection. During brazing, it is essential to remove the oxide film and oil from the contact surfaces of the base materials to facilitate capillary action after the filler metal melts, enhancing its wettability and capillary flow. Depending on the melting point of the filler metal, brazing can be classified into hard brazing and soft brazing.

Brazing technology has minimal deformation, resulting in smooth and aesthetically pleasing joints. It is suitable for welding precision, complex components made of different materials, such as honeycomb structure plates, turbine blades, hard alloy tools, and printed circuit boards. Prior to brazing, workpieces must undergo meticulous processing and strict cleaning to remove oil and excessive oxide films, ensuring proper assembly gaps. Generally, brazing technology requires gaps between 0.01 to 0.1 millimeters. Next, we will introduce the advantages of vacuum brazing technology.

Advantages of vacuum brazing technology:

1. Vacuum brazing technology significantly improves product corrosion resistance by eliminating the need for flux, avoiding various contaminants, and reducing costs associated with pollution-free treatment equipment while providing good safety production conditions.

2. VacuumBrazing technologynot only saves a significant amount of expensive metallic flux but also eliminates the need for complex flux cleaning processes, thereby reducing production costs.

3. The wettability and fluidity of vacuum brazing filler metals are excellent, allowing for brazing of more complex and narrow passage devices. Vacuum brazing technology enhances product yield and results in strong and clean working surfaces.

4. Compared to other methods, the internal structure of furnaces and fixtures has a longer lifespan, which can reduce maintenance costs for furnaces.

5. Many materials are suitable for vacuum brazing, such as aluminum, aluminum alloys, copper, copper alloys, stainless steel, alloy steel, low carbon steel, titanium, nickel, etc., which can all be brazed in a vacuum furnace. Designers determine the required materials based on the intended use of the brazed components, with aluminum and aluminum alloys being widely used.