Device and method for cooling rolls used for rolling in a highly turbulent environment

12:

• A rolling stand for metallic products comprising:
• a pair of work rolls;
• a pair of back-up rolls;
• at least one water pillow cooling device including a plurality of nozzles capable of spraying a plurality of cooling jets under pressure onto one of the work rolls, exits of the nozzles being arranged along a curved surface of the at least one water pillow cooling device, a curvature of the curved surface of the at least one water pillow cooling device being greater than a radius of the one work roll;
• and
• a removable plate placed between the at least one water pillow cooling device and the one work roll, the removable plate being concave and with a curvature such that a gap between the removable plate and the one work roll is constant or increases when moving in a direction of the at least one back-up roll, the gap being from 5 to 200 mm and the curvature of the removable plate being smaller than the curvature of the curved surface, the removable plate having holes to allow the cooling jets passing through the holes in the removable plate.

17:

• A method for cooling the work roll in the rolling stand according to claim 12 comprising:
• spraying a coolant via the at least one water pillow cooling device towards the one work roll;
• and
• producing a coolant pillow in a highly turbulent state in the gap between the one work roll and the removable plate.