A spray lubrication system of sheets is provided with electronically adjustable frequency spraying valves housed at upper and lower spraying heads. Sheets travel between heads on three motorized rolls. The sheet is clamped between rolls and contrast wheels. Sensors monitor and adjust lubricant temperature. A first group of motion sensors detect whether the sheet passes at each spraying valve or not. Using the first sensor group, the system can self-learn the shape of the sheet. A second group of motion sensors at both spraying heads detects whether a lubricant spraying is present at each valve. Using the second sensors, the system can diagnose a malfunction whenever a discrepancy is found between the spraying frequency controlled to a valve and whether a spraying is present at each valve. The upper spraying head is in a box for aspirating the oil mists generated by the lubrication system during the work cycle.

According to an embodiment of the invention, a descaling system is provided that includes multiple descaling headers, a common pipe, a connection pipe, a pump, a drive device, a branch pipe, a valve, and a control device. The multiple descaling headers are provided in a rolling line. The common pipe is connected to each of the multiple descaling headers. The connection pipe is connected to the common pipe. The pump is connected to the connection pipe and supplies high pressure water to each of the multiple descaling headers via the connection pipe and the common pipe. The drive device controls the driving of the pump. The branch pipe is connected to the connection pipe. The valve is provided in the branch pipe and controls the opening/closing of the branch pipe. The control device includes a data collector, a pressure calculator, a pump controller, and a protector. The data collector collects common pipe pressure information indicating the pressure inside the common pipe, rolling material position information indicating the position on the rolling line of a rolling material, and rolling material property information indicating a material property of the rolling material. The pressure calculator calculates the pressure inside the common pipe to satisfy the desired scale removal performance for the rolling material based on the common pipe pressure information, the rolling material position information, and the rolling material property information. The pump controller calculates the operation pattern of the pump to maintain the calculated pressure inside the common pipe and inputs the operation pattern to the drive device. The protector calculates the operation amount of the valve based on the operation pattern and controls the opening/closing of the valve according to the operation amount. Thus, a descaling system, a control device of the descaling system, and a method for controlling the descaling system are provided, in which higher energy conservation is realized and the descaling system has a long life while maintaining the scale removal performance of the descaling system.

In an aluminum foil rolling process, first and second aluminum foils are provided, each having first and second faces, one face between the first and second faces is lubricated to obtain a first lubricated face. The foils are coupled to obtain a coupled foil having two outer faces and rolling the coupled foil, reducing the thickness of the coupled foil. One face between the two outer faces of the coupled foil is lubricated to obtain a coupled foil having a second lubricated face. The coupled foil is then wound to obtain a wound coupled foil. The coupled foil is partially separated by unwinding one of the first and second foils, to obtain a wound coupled foil. The wound coupled foil is unwound and rolled to obtain a coupled foil with reduced thickness and is then separated to obtain first and second foils with respective first and second reduced thicknesses.

An industrial facility includes: a metal strip in motion; and/or at least one work cylinder; a contactless wiping system of a cooling liquid and/or lubricant jet or stream driven by a surface of the metal strip in motion or the work cylinder, the wiping system including a separating cleat with integrated supply of cooling liquid ending with a nozzle bar to be placed along a width of the metal strip or the cylinder and separated, during use, by a determined interval with respect to the metal strip or the work cylinder, the nozzle bar being oriented so as to supply a jet in a for of a liquid curtain oriented along a direction that is substantially opposite a scrolling direction of the strip or a rotation direction of the cylinder; and a liquid recovery trough, oriented such that during use, liquid sprayed by the nozzles deflects the jet.

A temperature control system used for cooling a rolling mill product is provided. The temperature control system includes a plurality of isolation valves that are directly coupled to one or more water boxes. At least one pump is coupled to the isolation valves. The at least one pump provides the pressure needed for cooling. The isolation valves are positioned to reduce the time required to build up pressure for cooling and reducing the metallurgical property transition length of the rolling mill product.

A system for cooling rolling mill material is provided that includes a conveyor system that receives rolling mill material and passes the rolling mill material through one or more cooling regions. A cooling structure that operates uniformly across the central and edge regions of the conveyor system. The cooling structure uses a first jet of air for cooling the central portion of the rolling mill material. A nozzle deck is positioned on the edge regions of the conveyor system produces a second of jet of air for cooling the edge portions of the rolling mill. The nozzle deck includes one or more adjustable nozzle structures for controlling the air flow produced by the second jet of air by varying the size of their air passage regions.

A method for determining the temperature of a metal strip (1) inside a cooling apparatus (4) of a hot rolling installation is implemented by an electronic device (12). This method includes acquiring a temperature measure of a strip portion at a current time instant; estimating, at the current time instant, a heat flux extracted from the strip portion inside the cooling apparatus according to a thermal model, and computing a strip portion temperature at a next time instant from the acquired temperature measure and the estimated extracted heat flux. The thermal model models an air cooling of the strip portion, a coolant header cooling of the strip portion by a coolant header and a remaining coolant cooling of the strip portion, wherein for the coolant header cooling the model models both an impingement cooling of the strip portion and a parallel flow cooling of the strip portion.

A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), the framework being in place of the work rolls (5) and the associated installation pieces (5a and 5b). For this purpose, the framework cooler (20) is sized such that it can be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The framework cooler (20) includes a lower water tank (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and a plurality of cooling nozzles (23), or cooling tubes (23a) arranged in the depth direction (T) of the framework cooler (20) or at least one cooling slot (24) extending in the depth direction (T) of the framework cooler (20). The lower and the upper water tanks (21b and 21a) can be thereby supplied with coolant by the respective connection (22). The bottom side of the steel strip (50) can be cooled by the cooling nozzles (23) or cooling tubes (23a) or the cooling slot (24) of the lower water tank (21b). The top side of the steel strip (50) can be cooled by the cooling nozzles (23) or cooling tubes (23a) or the cooling slot (24) of the upper water tank (21a).

An emulsion flow optimization method suitable for a cold continuous rolling mill that aims to achieve vibration suppression. The method aims to suppress vibrations by an oil film thickness model and a friction coefficient model. An optimum set value of the emulsion flow rate for each rolling stand that aims to achieve vibration suppression is optimized on the basis of an over-lubrication film thickness critical value and an under-lubrication film thickness critical value that are proposed. The method greatly reduces the incidence of rolling mill vibration defects, improves production efficiency and product quality, treats rolling mill vibration defects, and improves the surface quality and rolling process stability of a finished strip of a cold continuous rolling mill.

A cooling device for cooling a material to be cooled, comprising an inlet for a cooling medium conducted into a first, upper chamber of the cooling device. First conduits are provided which conduct the cooling medium from the upper chamber into a second, lower chamber of the cooling device. The upper chamber is separated from the lower chamber by a wall. Second conduits are provided which conduct the cooling medium from the lower chamber to at least one outlet opening for cooling medium, via which the cooling medium is discharged onto the material to be cooled.