Francis S Rerecich

US Patent:

39980847, Dec 21, 1976

Filed:

Nov 1, 1974

Appl. No.:

5/520353

Inventors:

Francis Rerecich - Dover NJ

Assignee:

Marotta Scientific Controls, Inc. - Boonton NJ

International Classification:

B21B 4502

US Classification:

72201

Abstract:

Rolling mills require uniform temperature control across the width of the sheet in order to roll a flat metal sheet of uniform gauge. This invention provides a rolling mill with spray nozzles that operate in groups to maintain substantially uniform temperature across the width of the sheet metal. Back pressure of the coolant within the cooling spray nozzle adjustment means obtains automatic control of individual nozzle adjustment to make the rate of flow of the coolant to the sheet metal workpiece always obtain substantially uniform temperature of the metal. In place of back pressure, other signal energy supplied to nozzle adjustment can be used. The nozzles are carried by spray boards that adjust to control the angle of impingement of the nozzle sprays against the sheet metal; and there is a novel construction for transmitting liquid between fixed passage to other passages in the angularly adjustable spray boards without the use of hoses.