Preparing Bonding Surfaces

To improve adhesion, the bonding surfaces must be roughened using sandpaper with a grain of 100 to 150.

Remove paint layers (cathodic immersion painting) using dry sandpaper or fibre discs with a grain of 100 to 150.

Only use abrasive products based on pure silicon carbide (SIC) for sanding/grinding down the bonding surface until bare.

The bare bonding flange areas must then be cleaned using a lint-free cloth soaked in acetone.

Leave cleaned surfaces to dry for approx. 1 - 2 minutes; bonding surfaces must be completely dry.

Apply primer to the cleaned surfaces.