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The activity where the work piece is etched prior to the application of the coating. Whether an old coating or rust is being removed or if the very first coating is being applied, it is critical to have the correct anchor profile on the work piece. If the peaks are to low this may lead to premature coating failure and if the peaks are too high too much of the expensive coating will be used. The values for peak count (Pc) and the average height between peak and valley (Rz) need to be monitored to successfully run the operation. Several abrasives can be used in various circumstances.

Abrasive Description
Aluminum oxide In blast rooms or cabinets where no ferrous contamination is allowed.
High Carbon Steel Grit The most economical choice considering the long life cycle and very suitable to be used in blast rooms.
Chilled Iron Cleans quickly because of it’s structure and hardness, but has a considerable lower life cycle then high carbon steel grit. It can only be used in blast rooms and vacuum blast machines, since it will wear to quickly on the wheelblast machines parts.
Garnet Mainly used in open blasting operations. Very quick cleaning rate and environmental friendly
Aluminum Silicate Open blasting operations. Creates a lower dust level then other slags.




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