Vacuum Brazing
Overview | Processes | Procedures | Induction Brazing | Vacuum Brazing | Brazing Atmospheres | Suggested Atmospheres | Choosing An Alloy | Alloy Suppliers | Brazing Machines
Brazing in a high vacuum environment provides the most process control and produces the cleanest parts, free of any oxidation or scaling. It is the preferred brazing environment for brazing aerospace components, hardening medical devices and other applications that require the absolute highest part quality.
We offer cost-efficient vacuum brazing services to both existing and new customers. We can work with load sizes up to 12x16" at up to 1800°C with +/- 5° temperature uniformity. Visit Vacuum Brazing Services to learn more.
We offer two machine designs for vacuum brazing - Bell Jar Vacuum Systems and Induction Heating Vacuum Furnaces.
Bell Jar Vacuum Systems LEARN MORE
In a bell jar vacuum system, parts are directly heated in a fully enclosed chamber, which can be pumped down to 5x10-6 Torr. Special fixturing can be designed for automatic part loading and unloading, This type of system is often used for vacuum brazing steel or nickel alloys with steel.
With a bell jar system, the parts are positioned before the bell jar is lowered into place and the controlled atmosphere is created. In this environment, a high degree of control over the overall process can be achieved and open-air issues of oxidation, scaling and carbon buildup can be virtually eliminated.
- Protective Atmosphere Heating With Easy Access To Parts & Fixturing
- Vacuum Level To 5x10-6 Torr At Moderate Temperatures
- Can Be Adapted For Automatic, High Volume Operation
- Auto/Manual Control with Easy-To-Use Touch Screen
- Optional Temperature Control
- Direct Induction Heating of Joint Area
Induction Heating Vacuum Furnace LEARN MORE
An alternative method for vacuum brazing is to use an induction heating vacuum furnace, which is often the best choice for brazing parts of unusual shapes or “orphans” from other heating processes. The difference is that the induction furnace will heat the entire part rather than just a narrowly focused joint area. Quartz viewports can provide access for infrared temperature sensing of each individual part.
The use of induction heating eliminates the long heat cycle-time requirements of a conventional vacuum furnace. Through the use of induction, the necessary heat is produced quickly, efficiently and directly into a small graphite susceptor, which radiates the heat uniformly into the part.
- Indirect Whole Part Heating
- Typical Ultimate Vacuum of 5x10-6 Torr
- Up to 90% Reduction in Overall Cycle Times
- Can Be Adapted For Automatic, High Volume Operation
- Auto/Manual Control with Easy-To-Use Touch Screen
- Optional Temperature Control
Free Feasibility Test for Vacuum Brazing
GH IA offers a free parts evaluation service for vacuum brazing. Simply send us samples of your parts and tell us about your process - we'll analyze your application requirements, determine the optimum combination of RF power, inductor configuration and atmosphere for your parts and give you our best advice!
585.368.2120
Vacuum brazing produces the cleanest parts.
Bell Jar systems offer easy part loading.
Vacuum Furnaces provide whole part heating.