Racking off is the removal of slag from the surface of the bath. Racking off is also used to refer to the removal of auxiliary casting materials from bunkers with the aid of mechanical devices.
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Alles über Gießereien mit Lexikon
Racking off is the removal of slag from the surface of the bath. Racking off is also used to refer to the removal of auxiliary casting materials from bunkers with the aid of mechanical devices.