Granular materials used in a blasting system (e.g. hanger-type blast machine, wire belt continuous blasting system, drum blasting system ...), which are brought into connection with the cast parts to be treated (blown, shot, spun) and thereby perform the blasting or cleaning work.
The type of abrasive is differentiated into
The following conditions should be fulfilled for the selection of the abrasive:
In addition, sufficient coverage of the entire surface with blasting abrasives is not guaranteed. The opposite requirements - high kinetic energy with sufficient coverage - are best met with a so-called operational mixture. A mixture of different grain sizes forms during operation of the blasting system. Thus, there is an optimal grain size for every blasting work that meets both requirements.
The surface of the cast parts must not be roughened unnecessarily when blasting and it must be of uniform quality (surface quality).
The abrasive must have the correct hardness and strength depending on the cast material to be blasted.