For many advanced industries, precision and quality in metal joining are paramount. Vacuum brazing furnaces have emerged as the cutting-edge solution for industries ranging from aerospace and automotive to electronics and medical devices.
Our expertise in vacuum brazing allows us to provide state-of-the-art solutions tailored to your industry. Whether for laboratories furnaces or large-scale industrial processes, our vacuum brazing furnaces guarantee precision, efficiency, and high quality.
Vacuum brazing is a heat treatment process which consists in joining two metallic items by melting a filler metal used as a joint, such as copper, cobalt or nickel. This metal joining process takes place at high temperature, in a controlled atmosphere or under vacuum, to insure homogeneity and quality of the process. Indeed, a rapid heating up with no overshoot and an atmosphere without oxygen prevent oxydation and ensure the quality of vacuum brazing processes.
There are several advantages when vacuum brazing. It is a profitable process that easily fits in metallic parts‘ production. Also, the dilution of the metal to be joined is low since the filler metal should have a lower melting point than the adjoining metal.
Using a vacuum brazing furnace provides several advantages over traditional brazing methods :
Are you looking for a high-quality brazing furnace ?
Within ECM Technologies, we apply our vacuum furnaces‘ technology to brazing. Temperature homogeneity and the absence of oxygen ensure the full mechanical integrity of treated parts and of oxidation sensitive assembly at high temperature. Our solutions are nimble enough to adapt to different kinds of atmospheres and required thermal profiles (heating speed, maintaining time, cooling speed, control of overshoots).
Moreover, pieces can be treated by batch, which implies a significant increase of productivity and of profitability.
Finally, we offer solutions with transfer systems that limit moves during the solidification phase. This ensures a treatment of premium quality since it reduces distortions and internal stresses. Moreover, the ECM Technologies’ range fulfills the needs of laboratories as well as of large industrial lines requiring high capacities. This allows ECM Technologies to adapt to various production flows.
Our vacuum brazing furnace provide :
The FLEX system is the most popular solution of ECM’s vacuum heat treatment euipment range. Its modular and compact architecture, based on a tunnel concept, is designed to meet the highest demand in terms of part processing quality and productivity.
The modular architecture of the Flex allows it to maintain furnaces at temperature, which enables to save time during the heating phase. The brazing process is somewhat similar to batch vacuum furnaces.
In addition, cooling occurs in a different cell. This allows the Flex system to be more productive and sustainable in comparison with batch furnaces. Indeed, batch furnaces need to heat, treat and cool down, wich causes retort distorsions on the medium run. The Flex system is not subjected to quick retort wear.
For high quality results, the brazing process requires mastery of a number of parameters. Mechanical integrity of parts and assemblies, control of pollution in the furnace, and control of the thermal cycle.
Using a vacuum brazing furnace ensures the mechanical integrity of parts and assemblies. The vacuum brazing furnace ensures good temperature homogeneity, reducing internal stress and deformation of parts. Ergonomics are also improved during furnace preparation and loading, while limiting assembly movements prior to brazing solidification.
The vacuum furnace ensures a clean environment by eliminating oxygen and limiting oxidation of heating éléments and insulation. The use of metal resistors (Ni-Cr, Mo, W) and reflective screens reduces contamination by solid residues, guaranteeing high-quality brazing.
Furnace tightness (5.10-³ at 10-⁴ mbar.l/sec) prevents the introduction of external pollutants, while internal condensation control avoids unwanted interaction with parts.
Reducing gas scavenging and secondary vacuum (<10-⁵ mbar) effectively remove oxygen and residual gases, limiting oxide formation and optimizing solder adhesion. Diffusion pumps, combined with LN₂ or chilled-water traps, prevent contaminant back-diffusion, ensuring a stable, perfectly controlled environment for precise, reliable brazing.
Three essential requirements for good control of the thermal cycle :
Five ranges of products compose ECM Technologies’ vacuum brazing furnace offer to meet different industrial needs :
Our vacuum brazing furnaces are dedicated to brazing under inert gas, hydrogen or vacuum.
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