High temperature Vacuum brazing furnace is a equipment of special welding, particularly well suited for joining complex geometries, precision assemblies and materials like aluminum or titanium, free of contamination. The vacuum furnace is also sometimes favored over hydrogen atmospheres when processing very large parts because of the ability to purge occluded, close-fitting areas.

Vacuum furnace brazing deoxidizes the metals being joined and more importantly, eliminates undesirable reactions that would have occurred in hydrogen or other inert gases. The very low-pressure environment (Vacuum) promotes the wetting of surfaces when the heating systems achieve the melting-temperature of the braze alloy (filler or die-cut pre-form), facilitating flow into the joints via capillary action. Lastly, the process is also used in the metallization of ceramic surfaces for joining ceramics to other metals by a process called Vacuum Active Metal Brazing.

Vacuum Brazing Furnaces is mainly used metal-joining process in which two or more materials are joined when a filler metal (with a melting point lower than those of the materials themselves) is drawn into the joint between them by capillary action.

Vacuum Brazing has many advantages over other metal-joining techniques, particularly welding. Since the base metals never melt, brazing allows much tighter control over tolerances and produces a cleaner connection, normally without the need for secondary finishing. Because components are heated uniformly, brazing consequently results in less thermal distortion than welding. This process also provides the ability to easily join dissimilar metals and non-metals and is ideally suited to cost-effective joining of complex and multi-part assemblies.

Vacuum Brazing Furnaces is very suitable for melding Materials of Aluminum, Nickel, Copper, Titanium, Steel, Ceramics, etc.