Vacuum Brazing furnace
for laboratory
What is brazing ?
Brazing is a metallurgical process for joining metals, by melting a filler metal to form a metallic bond between two identical materials or several parts of different types, as metal-to-metal, metal-to-ceramic or Glass-to-metal sealing.
Key features of Brazing
Various metals can be brazed : silver, copper, steels, precious metals (gold, platinum, palladium), ceramics, carbides and diamond products.
The temperature must therefore be higher than the melting temperature of the filler metal, but lower than that of the parts to be joined. During the brazing process, the filler metal flows into the gap between close-fitting parts by capillary action.
The filler metal is brought slightly above its melting temperature while protected by a suitable atmosphere. It then flows over the base metal and is then cooled to join the work pieces together.
For optimum assembly quality, brazing process is carried out in very good atmospheric conditions, or under vacuum, with controlled temperature homogeneity. This guarantees the absence of oxidation, a decisive factor in obtaining top-quality brazing alloys.
What is vacuum brazing ?
Vacuum brazing is a specialized method of brazing performed in a vacuum furnace. It offers superior quality and precision by eliminating oxidation and ensuring a clean, controlled environment. This method is particularly effective for high-performance applications where reliability is critical.
Advantages of vacuum brazing
- Oxidation-free Joints : conducted in vacuum or with protective gases like nitrogen, argon or hydrogen to prevent oxidation.
- Imporved Wettability : ensures the filler metal flows smoothly and bonds effectively with the base materials.
- Temperature homogeneity : vacuum furnaces provide consistent heating, critical for precise assembly.
The vacuum brazing process explained
- Preparation : parts are cleaned to remove impurities or oxides.
- Assembly : components are positioned with a small gap to allow capillarity action.
- Filler metal application : a filler metal, often protected by flux or inert gases, is heated above its melting point.
- Joining : the molten filler metal flows into the joint, bonding the parts upon cooling.
For vacuum brazing, the process is conducted in a vacuum furnace, ensuring a clean and controlled environment for optimal results.
ECM vacuum furnaces for brazing :
furnaces designed for vacuum brazing
With ECM Lab Solutions furnaces, brazing is carried out under vacuum or protective gas (nitrogen, argon, hydrogen) to prevent oxidation and improve the wettability of the parts to be joined.
ECM Lab solutions can provide customizable settings for various materials and applications.
Our vacuum brazing furnaces offer a precise temperature control for consistent results.
Brazing, particularly vacuum brazing, is an essential process for creating strong, reliable joints in critical applications. With ECM Lab Solutions, you choose the best quality for your vacuum brazing applications.
discover our range of vacuum furnaces
Find out more about our vacuum furnaces and related heat treatment solutions :
- Brazing
- Annealing
- Sintering
- Magnetic Annealing
- Glass-to-Metal sealing
- Post additive manufacturing
- and more…
cristal : Vacuum bell furnace
Ideal furnace for high temperature and clean treatments.
Processes : Tempering, Degassing, Hyper-quench Hardening, Brazing, Sintering, Magnetic Annealing, Glass-to-Metal Sealing.
Liliput : Hearth lift vacuum furnace
Ideal for laboratory and advanced heat treatment.
Processes : Brazing, Sintering, Glass-to-metal sealing, Annealing, Magnetic Annealing, Degassing.
Turquoise : Vacuum horizontal furnace
Post additive manufacturing furnace
Processes : Stress relieving, Annealing, Ageing, Solution treatment.
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