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Dry vacuum solutions for demanding duty

Dry vacuum solutions for demanding duty

Applications such as vacuum brazing, nitriding or plasma nitriding give higher challenges to the vacuum technology used. Depending on the process, aggressive vapors such as NH3 or acidic fluxes are used, which are entering the vacuum pump. Dry compressing vacuum pumps are the best choice for such processes as they are free of oil in the pump chamber which can react with the such media.
Systems based on dry compressing screw pumps in combination with Roots pumps are an optimal solution for such more demanding heat treatment processes.

User example:
Brazing of automotive heat exchangers. If flux is used to clean the surfaces, this acidic material evaporates and enters the vacuum system. These vapors can attack the oil in oil-sealed pumps and can cause pump corrosion.

Solution:
RUTA pump system with DRYVAC, VARODRY or LEYVAC dry-compressing screw pumps.
For this application, the use of dry-compressing screw pumps is the best choice as screw pumps can easily handle the flux outgassing of the furnace. The flux remains in the vapour phase and does exit the pump without condensing or causing corrosion.
The system operator does not have to respect shorter maintenance intervals, the usual annual oil change of a dry-compressing screw pump is sufficient.