High Temperatur Box Type Vacuum Sintering Furnace For Copper Brazing 80L

TAILORD Retort Nitrogen-Hydrogen Atmosphere Furnace for Copper Paste Brazing

Enabling Strong, Oxide-Free Bonds in a Sealed, Reducing Atmosphere

Copper paste brazing offers a cost-effective and versatile method for joining components, but its success hinges on completely preventing oxidation during the thermal cycle. The TAILORD Can-Type Furnace is masterfully engineered to create this essential environment. By utilizing a sealed retort flooded with a protective nitrogen-hydrogen atmosphere, it provides the perfect conditions for the organic binder removal and subsequent sintering/brazing of copper paste, resulting in strong, dense, and highly conductive joints without the need for vacuum.

Key Features & Process Advantages:

1. Dedicated Reducing Atmosphere for Copper Processing: The core of the system is its ability to maintain a pristine, oxygen-free nitrogen-hydrogen (N₂-H₂) environment within the sealed retort. The hydrogen component actively reduces surface oxides on the copper paste and the base metals being joined, which is the absolute prerequisite for achieving excellent wetting and a metallurgically sound, strong braze joint.

2. Integrated Two-Stage Process in One Sealed Chamber: The furnace seamlessly manages the complete thermal profile for copper paste. It first facilitates the low-temperature debinding (burn-out) of the organic vehicle in the paste, and then proceeds to the high-temperature brazing/sintering stage where the copper particles densify and form the joint, all within the same protected atmosphere, preventing oxidation at any stage.

3. Superior Joint Integrity and Electrical Conductivity: The combination of a reducing atmosphere and a uniform thermal profile ensures the copper sinters into a dense, low-porosity structure. This translates to high joint strength and excellent electrical and thermal conductivity, making it ideal for creating both mechanical and electrical interconnections in power electronics and heat exchanger assemblies.

4. Cost-Effective and Flux-Free Brazing Solution: This process eliminates the need for corrosive chemical fluxes and expensive vacuum systems. The result is a clean, flux-free joint that requires no post-braze cleaning, reduces overall process cost, and eliminates the risk of flux-induced corrosion, ensuring long-term reliability.

5. Robust Retort Design for Process Purity and Safety: The sealed metal retort (or "can") effectively isolates the workload and the brazing atmosphere from the external furnace heating elements. This not only protects the heating elements from potentially corrosive process vapors but also provides an added layer of safety when using hydrogen, all while ensuring excellent temperature uniformity across the load.

Why Partner with TAILORD?

• Maximized Brazing Success: The controlled reducing atmosphere is specifically designed to tackle the oxidation challenge of copper, leading to highly reliable and repeatable brazing results.

• Operational Economy: Offers a more accessible and lower-cost alternative to vacuum furnaces for copper brazing, without compromising on joint quality.

• Ideal for Batch Production: Perfect for the batch processing of components like heat sinks, power modules, and complex assemblies that require multiple joints formed simultaneously in a protected environment.

Ideal for: Brazing of heat sinks to power substrates (e.g., DBC), joining in solar thermal collectors, and general assembly in power electronics and automotive applications using copper paste.

Choose TAILORD to master copper paste brazing with confidence. Our can-type furnace technology provides the sealed, reducing environment essential for creating robust, oxidation-free copper joints that ensure performance and durability.