Heat treatment external processing manufacturers: Vacuum brazing furnaces are used for brazing in furnaces or brazing chambers that extract air for a long time. They are particularly suitable for joints with large and continuous brazing areas, as well as for network connections and certain metals with special properties, including titanium, zirconium, niobium, molybdenum, and tantalum. The application research scope is relatively wide. However, there are also issues with vacuum brazing, and here are some of our main drawbacks:
① Metals are prone to volatilization under vacuum conditions, therefore vacuum brazing and soldering of volatile components are not suitable. If necessary, corresponding complex process measures should be taken.
② The vacuum brazing furnace is sensitive to the surface roughness, assembly quality, and fit tolerance of brazed parts, and requires the theoretical level of the working environment and operators.
③ Vacuum equipment is complex, requires a large one-time investment, and incurs high maintenance costs. So how to implement brazing technology in a vacuum furnace? When performing brazing operations in a vacuum furnace, place the added welded parts into the furnace (or brazing container), close the furnace door (or close the brazing container cover), and perform vacuum pre pumping before heating. Start the mechanical pump first, and when the vacuum reaches 1.35Pa, turn the steering valve to close the direct channel between the mechanical pump and the brazing furnace. Connect it to the brazing furnace through a diffusion pump, and the mechanical pump will enter the required vacuum. Then start the power heating.
The above heat treatment introduces the welding effect of vacuum brazing furnace to external processing manufacturers. If you need to learn more, feel free to contact us anytime! I have many years of experience in heat treatment for external processing companies and look forward to your joining at any time.
1. Powder metallurgy: vacuum sintering, vacuum tempering
2. Vacuum brazing: brazing of iron, aluminum, copper, stainless steel, and various metals and non metals
3. Vacuum heat treatment: vacuum solid solution, vacuum annealing

Allocation list of the furnace body part

• List of main accessories (wearing parts)