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US 4,247,047 AGranted
Modular zoned digital coolant control system for strip mill rolls
OwnerEdward J. Schaminginventor
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OwnerEdward J. Schaminginventor
Estimating the term…
Metal strip reducing rolls are precisely cooled in multiple zones across the width of the strip by the selective activity of modular valve assemblies on coolant headers mounted near the reducing rolls. Each valve module may possess one or more remotely controllable coolant control valves within the header and associated coolant nozzles whose aperture sizes may vary in a fixed ratio within each zone to achieve a variable coolant flow rate in each zone while maintaining a constant unchanging coolant spray configuration and impingement force. Individual coolant valves and nozzles in a digital control system are fully on or fully off in contrast to gradient control of coolant in an analog system. An observer of the moving metal strip activates and deactivates selected nozzles in selected zones across the strip through a push button digital control console. Electrical, pneumatic or hydraulic valve control may be utilized. Back-up rolls in the mill may also be cooled.
A coolant distribution apparatus for the zoned cooling of rolls in a metal strip rolling mill comprising a coolant header having a coolant chamber and a coolant inlet leading to said chamber, plural modular coolant control valve and spray nozzle assemblies releasably mounted on said header, each modular assembly having a predetermined number of independently digitally operated control valves and associated coolant spray nozzles, the spray nozzles of each modular assembly having predetermined nozzle aperture sizes, digital power means connected with said control valves in said modular assemblies so that the valves in any or all assemblies may be selectively fully opened or fully closed to achieve the desired zoned cooling of said rolls, said digital power means being electrical, and each coolant control valve having an electromagnetic coil and a movable armature forming a valve element engageable with a seat in the particular modular assembly containing such valve, wiring for all of the control valves of each modular assembly being contained within each modular assembly, and a common electrical connector on each modular assembly for the wiring contained therein.
Dependencies are inferred from the claim text.