Oxygen-Free Copper Vacuum Brazing

Oxygen-free copper vacuum brazing is a precision joining process used in applications where high conductivity, cleanliness, and joint reliability are essential. Oxygen-free copper is valued for its extremely low oxygen content, which provides superior electrical and thermal conductivity and makes it ideal for vacuum and high-purity environments.

In this process, copper components are assembled with a suitable brazing filler metal and placed inside a high-vacuum brazing furnace. The vacuum atmosphere prevents oxidation during heating, allowing the filler metal to melt and flow smoothly into the joint by capillary action. This results in clean, dense, and leak-tight joints without the use of flux or post-brazing cleaning.

Vacuum brazing preserves the inherent properties of oxygen-free copper while ensuring strong metallurgical bonding and minimal distortion. The finished assemblies demonstrate excellent thermal efficiency, high electrical performance, and long-term stability, even under demanding thermal and mechanical conditions.

Due to these advantages, oxygen-free copper vacuum brazing is widely used in power electronics, vacuum systems, heat exchangers, and high-frequency electrical equipment, where performance and reliability are critical.