CO₂ Snow Blasting

Component Cleaning Using CO₂ Snow

CO₂-Schnee-Reinigung von komplexen Metallbauteilen (Ersatz für wässrige Reinigung)
© Fraunhofer IFAM

CO₂ snow cleaning of complex shaped metal components (alternative to wet chemical cleaning)

© Fraunhofer IFAM

Removal of release agents from CFPR materials

CO2 Snow Blasting ...

Contaminants and release agents can be removed from components using CO2 snow blasting processes. This in-line technique involves the sudden expansion of liquid CO2, whereby solid crystals of CO2 snow form in a nozzle on introducing compressed air. These are blasted at the surface to be cleaned. There is no damage due to the immediate sublimation, and even sensitive surfaces can be effectively cleaned. Compared to conventional blasting grit, the CO2 snow evaporates and can be extracted without leaving residues. The process is eco-friendly because CO2 can be recovered as a byproduct from many chemical processes.

CO2 snow blasting can be used as an alternative to cleaning baths and solvent-based cleaning processes.

… from Fraunhofer IFAM

The scientists of Plasma Technology and Surfaces PLATO have expertise in the industrial implementation of this simple technique. They identify suitable process parameters for a wide variety of adhesive bonding and coating applications of customers.

Example applications                      

Advantages

  • Eco-friendly, bath-free cleaning
  • Fast, low-cost process
  • No emission of Volatile Organic Compounds (VOCs)
  • Enhanced use of resources due to local, needs-oriented cleaning
  • Simplification of the production due to no need for drying processes
  • Easy automation and process monitoring
  • Increased production reliability and process stability due to the high cleaning efficiency of a wide range of materials, and also composites, such as polymers and metals
  • Can be combined with other surface pre-treatment methods