Vapor degreasing

The vapor degreasing is a technical process for cleaning components of fat residues. As a degreaser organic solvents used in the gas phase.

Principle

The component to be cleaned is suspended in a chamber which is filled with solvent vapor. These are generated by evaporation of the liquid solvent by the heating elements at the bottom of the chamber. The solvent condenses on the cooler component to be cleaned and covered it with a film of solvent, which dissolves fats from the component, runs down and this carries with him into the swamp. An advantage of the method is that no fats can evaporate from the bottom and thus Wiederbefettung can be practically excluded.

For use are solvents which dissolve fats well. Trichloroethene and tetrachloroethene have long been the most important solvent for vapor degreasing. However, since these compounds contribute to damaging 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 not however, benzene and petroleum ether.

Swell

• G. Have Not: Bonding - successfully and the error: crafts, practitioners, education, industry, 5th edition, pp. 62-63, Vieweg Teubner Verlag, 2008, ISBN 978-3834804853.