Custom Vacuum Brazed Liquid Cold Plate
High-performance, flux-free thermal management for extreme heat flux applications.
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Vacuum Brazing Process & Principles
Vacuum brazing is an advanced manufacturing process used to join cold plate components, delivering higher thermal conductivity and lighter-weight solutions. In this process, a brazing alloy (filler metal) with a lower melting point than the base materials is precisely applied between the fixtured components.
Because the heating occurs within a high-temperature vacuum furnace, there is zero risk of oxidation, entirely eliminating the need for chemical flux. As the temperature rises, the melted brazing alloy fills the microscopic gaps between the components via capillary action. Upon cooling, a permanent bond is formed through atomic attraction and diffusion. The final result is a clean, monolithic structure with exceptionally strong joint
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Why Choose Vacuum Brazed Cold Plates?
We typically recommend vacuum brazed cold plates when standard machining or extrusion simply can’t handle your heat load within a tight space.
1.Design Freedom for Internal Channels: You aren’t limited to straight drilled holes. We can place high-density folded fins or micro-channels exactly where your system’s hotspots are. This drops your thermal resistance (Rth) while keeping the pressure drop (Delta P) manageable.
2.Zero Flux, Zero Internal Residue: Because the bonding happens in a vacuum furnace, we don’t use any chemical fluxes. The internal fluid pathways stay 100% clean. This means no leftover residue will wash out and clog your system later—which is critical for DI water loops, lasers, and medical equipment.
3.Parent-Metal Strength: The brazed joints bond at the atomic level, making the cold plate essentially one solid piece of metal. There are no elastomer seals or O-rings to age or degrade, meaning it handles high burst pressures and continuous thermal cycling without leaking.
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