A vacuum brazing furnace is a device specifically designed for brazing in a vacuum environment. The following is a detailed introduction to the vacuum brazing furnace:

1、 Definition

Vacuum brazing furnace is an equipment used for metal processing. By brazing in a vacuum environment, the content of impurities such as oxygen and nitrogen can be effectively controlled, achieving high-quality welding. It mainly utilizes a low-temperature high-purity atmosphere in a vacuum environment to achieve material connection.

2、 Working principle

The working principle of a vacuum brazing furnace is based on the melting and welding of vacuum and brazing materials. In a vacuum environment, oxygen and other impurities in the air are eliminated, making the welding process purer and more stable. When the workpiece is placed in a vacuum brazing furnace, the high temperature in the vacuum environment heats the surface of the workpiece and the brazing material to a certain temperature. Subsequently, the solder melts into a liquid state and forms a uniform wetting film on the surface of the workpiece through surface tension and capillary force. At high temperatures, the liquid solder in the wetting film reacts with the surface of the workpiece, thereby achieving the connection between the workpieces.

3、 Main features

Vacuum environment: Brazing can be carried out in a vacuum environment to avoid the influence of gases such as oxygen and nitrogen on welding quality.

High quality welded joints: In a vacuum environment, the surface of the metal material can be better wetted, making it easier for the brazing material to penetrate and bond to the metal, thereby achieving higher quality welded joints.

Accurate temperature control: The working principle of the vacuum brazing furnace ensures precise temperature control during the brazing process, avoiding problems such as oxidation and carbon deposition.

Removing pollutants: Low pressure in a vacuum environment is also beneficial for removing pollutants from the surface of the workpiece, improving the quality and corrosion resistance of the brazed joint.

Wide applicability: Suitable for welding various metal materials, including steel, copper, aluminum, as well as workpieces of various specifications and shapes.

4、 Application Fields

Vacuum brazing furnaces have wide applications in industrial manufacturing, aerospace, energy and other fields. It is mainly used for vacuum brazing of aluminum products such as aluminum alloy heat exchangers, brazing of stainless steel, titanium alloys, hard alloys, high-temperature alloys, non-ferrous metals, vacuum tempering of high-speed steel, tool and mold steel, bearing steel, stainless steel and other materials, as well as aging and annealing treatment of non-ferrous metals.

5、 Advantages

Improving welding quality: By using a vacuum brazing furnace, the content of impurities such as oxygen and nitrogen can be effectively controlled, avoiding defects such as oxidation and porosity in the welded joint, thereby improving the quality and strength of the welded joint.

Extended service life: Brazing in a vacuum environment can also reduce the oxidation rate of materials and extend the service life of equipment and workpieces.

Easy to operate: The vacuum brazing furnace has the advantage of easy operation and is suitable for workpieces of various specifications and shapes.

In summary, vacuum brazing furnaces play an important role in the metal processing industry due to their unique working principles and significant advantages.

The following are videos related to vacuum brazing furnaces, providing the definition and working principle of vacuum brazing furnaces for reference: