Vacuum brazing furnaces

Listing ID #2967278

Reasons to Braze under Vacuum
The following reasons support the use of brazing under vacuum:
Calibrated use of alloy with magnesium (4045, 4044, 4104, 4004) to prevent excessive Mg sublimation in the vacuum chamber
High final vacuum due to high capacity pumping systems (cryogenic pump + diffusion pumps), which produce a low oxygen atmosphere
Rapid transition of the load temperature during the heating phase from 520 °C (starting temperature for Mg sublimation) to 605610 °C thanks to high power furnaces, a feature that prevents an oxidized layer (Al2O3) from reforming on the surface of the piece newly reduced to Al
Suitable fixing systems of the individual heat exchanger prevent the piece from collapsing or deforming
Uniform load temperature (± 3 °C at 605 °C) is achieved through accurate control of the output power and by distributing the heating zones
Cleanliness of the components
No emission of contaminated substances into the atmosphere
Controlled cooling of the walls and other elements of the furnace with heated water (80 °C) to prevent atmospheric water vapor from condensing during loading and unloading process