Brazing in a high vacuum environment provides the most process control and produces the cleanest parts, free of any oxidation or scaling. If you need fast turnaround on a high-quality vacuum brazing job, we can help! Count on our experienced vacuum brazing experts and our advanced vacuum brazing equipment to process your parts exactly to your specifications for a wide range of materials:
In addition to high vacuum brazing, we are also able to process many parts in controlled atmospheres such as hydrogen, nitrogen, and argon. The following table illustrates our suggested brazing atmospheres for many common brazing combinations:
|Common Brazing Combinations||Suggested Atmospheres|
|Material Being Brazed||Filler Metal||Vacuum||Hydrogen||Nitrogen||Argon||Air*|
|Copper||Silver with Lithium|
|Titanium||Silver with Lithium|
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.
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. 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.
Located in Rochester, New York, GH Induction Atmospheres (GH IA) is a leading American provider of innovative industrial heating solutions and services for automotive, aerospace, medical and energy production applications. We design and manufacture customized, turnkey induction heating systems for industrial heat treating, brazing, welding, hardening and general purpose heating.
GH IA is part of the worldwide GH Group, one of the largest most experienced induction heating companies in the world with headquarters in Valencia, Spain, and affiliated companies in Germany, France, Mexico, Brazil, Argentina, India and China. GH Group has decades of experience with manual and automated production systems for induction brazing and heat treating.