A multistage rolling mill 100 includes support bearings 10a, 10b, 10c, 10d, 10e, 10f, 10g, and 10h arranged on the entry side and/or the exit side of work rolls 2a and 2b, and supporting the work rolls 2a and 2b on an work side and a drive side. The offset positions in a pass direction of the pair of work rolls 2a and 2b for rolling a strip 1 are changed by moving in and out the support bearings 10a, 10b, 10c, 10d, 10e, 10f, 10g, and 10h to the entry side or the exit side with respect to the pass direction. A multistage rolling mill capable of rolling a hard material efficiently and suitable for obtaining a strip of high product quality is thereby provided.

A cooling device (7) for cooling a roll (5) of a roll stand (1). The cooling device (7) includes a chilled beam (13) for receiving and discharging a coolant. The chilled beam (13) has multiple full jet nozzles (21) disposed on a discharge side (19) of the chilled beam (13), the side facing the roll (5) and extending parallel to a roll axis (17) of the roll (5). Through each of the full-jet nozzles, a jet of coolant having a nearly constant jet diameter can be sprayed from the chilled beam (13) towards the roll (5) in a discharge direction (23).

Disclosed is a spray ramp intended to lubricate and/or cool a laminated strip and/or pressure cylinders of a mill, including: a tubular shaft of which the hollow interior volume forms a fluid admission chamber; a chassis rigidly connected to the external wall of the shaft, extending along the tubular shaft; a plurality of nozzles distributed over the length of the chassis and supported by the chassis, arranged such that the jets form a fluid curtain; and a pipe system, inside the chassis, ensuring the supply of the nozzles from the through-bores provided in the tubular wall of the hollow shaft. The pipe system includes at least one pressure levelling chamber extending over the whole active length of the chassis and through which all the fluid supplying the plurality of nozzles passes.

A framework cooler (20) for cooling a steel strip (50), installed in a roller framework (11), in place of the work rolls (5) and their associated installation pieces (5a and 5b). The framework cooler (20) is sized to be installed into the roller framework (11) through the operator-side roller stands (1) of the roller framework (11). The cooler (20) includes a lower (21b) and an upper water tank (21a), each having a connection (22) for a coolant, and includes 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). The bottom and top sides of the steel strip (50) may be cooled.

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.

The invention relates to a method and a rolling device for rolling a rolled material. The rolled material is guided through a roll gap between two working rollers of a reversing roll stand, alternatingly in two opposing rolling directions. A lubricant for lubricating a contact zone is introduced into the contact zone in which the rolled material is in contact with the working rollers, and a coolant is applied to the rolled material and/or the working rollers. In a mixture with a carrier gas, the lubricant is sprayed onto the working rollers and/or onto the rolled material exclusively on an outlet side of a pass. The coolant is applied to the working rollers and/or to the rolled material exclusively on an inlet side of a pass.

A cooling bar (1) for cooling rolled material (5) being moved in a transport direction (3) and in particular for reducing temperature differences in the temperature of the rolled material (5) transversely to the direction of transport (3). The cooling bar (1) has several full jet nozzles (11) by means of which a coolant beam of a coolant with an approximately constant jet diameter can be distributed to the rolling stock (5) in the direction of distribution (15). A cooling device has at least two cooling bars (1) of that type. The cooling bars extend transversely to a transport direction, one behind the other. Each cooling bar has a respective different pattern of jet nozzles and selection of applicable pattern of jet nozzles in their respective bars selectively cools the rolled material transversely to the transport direction.

A wire block assembly cartridge for an arrangement of solenoid operated pilot valves for operating coolant control valves in a manifold assembly for supplying a pressurized coolant to a rolling mill and having multiple wire block blocks in the manifold. The cartridge has four coolant control valves and four solenoids coils that control the four coolant control valves, and four spray nozzles. The wire block assembly cartridge can have the spray nozzles on 25 mm centers to enable spraying in narrow zones.

A method for detecting a faulty cooling unit in a set of cooling units configured to provide a coolant to work rolls arranged to process a work item therebetween, the method including: varying the flow rates of the coolant ejected from a sub-set of the cooling units; in response to varying the flow rates, determining a flatness variation value of the work item for at least each of the cooling units in the sub-set of cooling units, the flatness variation value being indicative of the work item flatness variation downstream of the work rolls; and detecting a faulty cooling unit based on comparing the flatness variation values to a reference flatness variation value.

The invention relates to a method and a rolling device for rolling a rolled material. The rolled material is guided through a roll gap between two working rollers of a reversing roll stand, alternatingly in two opposing rolling directions. A lubricant for lubricating a contact zone is introduced into the contact zone in which the rolled material is in contact with the working rollers, and a coolant is applied to the rolled material and/or the working rollers. In a mixture with a carrier gas, the lubricant is sprayed onto the working rollers and/or onto the rolled material exclusively on an outlet side of a pass. The coolant is applied to the working rollers and/or to the rolled material exclusively on an inlet side of a pass.