Vapor degreasing
The vapor degreasing is a technical process for cleaning components of grease residue . Organic solvents in the gas phase serve as fat dissolvers .
principle
The component to be cleaned is suspended in a chamber that is filled with solvent vapors. These are created by evaporating liquid solvent through heating elements at the bottom of the chamber. The solvent condenses on the cooler component to be cleaned and covers it with a film of solvent that loosens grease from the component, runs downwards and carries it with it into the sump. One advantage of the method is that no fats can evaporate from the sump and therefore relubrication can practically be ruled out.
Solvents are used that dissolve fats well. Trichlorethylene and tetrachlorethylene have long been the most important solvents for steam degreasing. However, since these compounds are harmful to the ozone layer , they are practically no longer used for this purpose. Solvents such as acetone , ethyl acetate , isopropanol , methanol and methyl ethyl ketone are also suitable, but benzene and petroleum ether are not .
swell
- G. habenicht: Gluing - successful and error-free: craft, practitioner, training, industry , 5th edition, pp. 62–63, Vieweg + Teubner Verlag, 2008, ISBN 978-3834804853 .
literature
- MTU "Aero Engines": Training documents for the PT1 penetration procedure (Level I)
- Seelich, Gründig: Arbeitsbuch Chemie (6th edition). Urban & Schwarzenberg publishing house