When the specifications are so demanding they seem to verge on the impossible, it may be time to consider vacuum brazing.

Vacuum brazing is conducted in a furnace operating below atmospheric pressure. The entire assembly is heated as one, so multiple brazes are performed simultaneously. Since no oxidation occurs, flux isn’t necessary, eliminating post-braze washing and guaranteeing absolutely clean, inclusion-free joints. As is the case with all furnace brazing, all parts are uniformly brought up to temperature, minimizing residual stresses and distortion. There are no potentially troublesome heat-affected zones.

Many materials can be joined by vacuum brazing, but often it is the method of choice for metals that oxidize easily (these are common in many aerospace applications) or for bonding dissimilar metals (including metals to ceramics). Vacuum brazing also allows performing certain heat-treating operations (such as age-hardening) in the same cycle as the brazing, saving time and money. Call your partners at Thermal-Vac for a detailed explanation of the vacuum-brazing process and the other brazing and finishing processes we offer. Let us help you find the methods and materials that work best for your project. It’s all part of the Thermal-Vac Advantage.

Thermal-Vac is one of North America’s leading, independently owned precision brazing, heat treating and metal finishing firms. With nearly three decades of diversified industry and application experience, we have earned a reputation for outstanding performance, personalized service and attention to detail. Leverage our expertise by allowing us to serve your company’s precision brazing and heat treating needs.