Method and device for cooling rolls

摘要

The invention relates to a method for cooling a roll (1), in particular a working roll (1) of a hot-rolling system, comprising the steps of feeding coolant (3) by means of a nozzle (5) into a gap (7) between at least a portion of the roll surface and a cooling shell (9, 11) that can be placed against the portion of the roll surface, and adjusting the gap height (h) between the cooling shell (9, 11) and the roll surface. According to the invention, the adjustment of the gap height (h) comprises either measuring the pressure (pact) of the fed coolant (3) or measuring the volumetric flow rate (Vact) of the fed coolant (3). The invention further relates to a corresponding device (10) for cooling a roll (1).

主权项

1. Method of cooling a roll (1) of a hot rolling installation, comprising the steps of:
feeding of a coolant (3) with a nozzle (5) in a gap (7) between at least a portion of a roll surface and a cooling shell (9, 11) mountable on the portion of the roll surface; setting a gap height (h) between the cooling shell (9, 11) and the roll surface; and carrying out one of the following steps: measuring a pressure (pact) of the fed coolant and setting the gap height (h) on basis of the measured pressure (pact); and measuring a volume flow rate (Vact) of the fed coolant (3) and setting the gap height (h) on basis of the measured volume flow rate (Vact).