Veining_(metallurgy)
Veining (metallurgy)
Metallurgical casting defect
In metallurgy a veining (or finning) is the occurrence of a sheet like casting defect, produced by molten metal penetration into a sand casting mould.
Veining
a defect on the surface of a casting appearing as fins, veins or wrinkles and associated with excessive thermal movement of the sand, especially core sand
AFS Metalcasting Dictionary.[1]