Vacuum Suction Blasting

Vacuum Suction Blasting – In-line Blasting Process for Production and Repair

Halbautomatisiertes Vakuum-Saugstrahlen von Verbindungselementen
© Fraunhofer IFAM
Semi-automatic vacuum suction blasting of fasteners
Berührungsloses Vakuum-Saugstrahlen von CFK-Oberflächen
© Fraunhofer IFAM
Contactless vacuum suction blasting of CFRP surfaces

Vacuum suction blasting ...

Classical compressed air blasting requires the use of blasting booths or complex temporary protective measures to clean surfaces or remove coatings. Much simpler is to use compact and mobile vacuum suction blasting prior to, for example, adhesive bonding, painting/lacquering, coating, or repair work. In this method an industrial vacuum system generates a reduced pressure in a closed head through which the abrasive is accelerated onto the surface and after the blasting process is immediately extracted again. This means that dust-free blasting processes can even be performed in-line under sensitive production conditions.

Vacuum suction blasting can replace conventional compressed air blasting and can be used instead of manual and automated local sanding/grinding processes.

… from Fraunhofer IFAM

The Plasma Technology and Surfaces PLATO scientists have expertise in the industrial implementation of this simple technique. The blast heads and process conditions can be adapted together with industrial partners a wide range for customer requirements.

Example applications

  • Local cleaning and layer removal from fiber reinforced plastics
    (FRPs such as CFRPs, GFRPs)
  • Cleaning and activation of fasteners
    (e. g. for aircraft manufacture, aircraft repair)
  • Contact-free blasting of large-area substrates
    (e. g. solar cells, sheet materials)

Advantages

  • Mobile process suitable for in-line application
  • Fast, low-cost process
  • No dust emissions
  • Enhanced use of resources due to local, needs-oriented surface pre-treatment
  • Simplification of the production due to no need for blasting booths
  • Easy automation and process monitoring
  • Improved workplace safety and process efficiency due to local pretreatment with integrated extraction
  • Can be used on a wide range of materials, and also on composites such as polymers and metals