Preparing Bonding Surfaces
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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.