Sms Group Gmbh

Sms Siemag Aktiengesellschaft

Rebs Zentralschmiertechnik Gmbh

Ralf Seidel

Karl Keller

Jürgen Seidel

Johannes Alken

Matthias Kipping

Daniel Knie

Torsten Müller

Torsten Mueller

Magnus Treude

Konrad Roeingh

Andrej Tucak

Alexander A Rebs

Udo Davids

Alexander A Sen Rebs

A seal () for sealing a lubricant space prevents lubricant () escaping. A rolling stand has a seal of this kind. The seal () is made at least partially from elastic material. To enable a pressing force FR, with which the bottom face () of the seal is pressed against an opposite contact surface (), for example of a roll journal (), to be variably set, the seal () has at least two cavities, which are separated from each other in the circumferential direction and which are open towards the lubricant space of the bearing.

Seal to prevent lubricant escaping, and rolling stand having said seal

The invention relates to a device and a method for cooling a roll. The roll concerned can be a roller in a roll stand or a measuring roll. The device comprises a cooling shell having a cross section in the shape of a section of a circular arc, for covering a surface region of the roll (), wherein, in the region of an edge of the cooling shell, a bearing is formed with a pivot joint () with an axis of rotation running perpendicular to the circular arc-shaped cross-section, for pivoting the cooling shell about the axis of rotation. According to the invention, in order to ensure that the size of the cooling gap during the rolling operation or during the operation of a measuring roll is always autonomously optimally set, the bearing has a degree of freedom in radial direction r with respect to the circular arc-shaped cross-section of the cooling shell, such that the cooling shell is mounted in the bearing in such a way as to be freely movable in the radial direction.

Device and method for cooling a roll

A method and a device for controlling a parameter, for example the profile or the flatness, of a rolled stock in strip form. A cooling jacket that can be brought up to the roll and is designed to be variable in its effective length b in the circumferential direction of the roll is used as a final controlling element.

Method and device for controlling a parameter of a rolled stock

A roll arrangement for rolling rolling material in a rolling system. The roll arrangement includes a roll that is rotatably mounted by its roll journal in a bearing bush of a chock. A ring gap for receiving a lubricant is formed between the bearing bush and the roll journal. The ring gap is sealed both on the ball side of the chock and on the side of the chock away from the balls, using sealing rings. In order to increase the load capacity or the rolling force of a roll arrangement while maintaining or reducing the construction size thereof and without the roll arrangement overheating, discharge channels are provided in a through-flow angular range of the bearing bush for discharging the lubricant out of the ring gap into an oil-receiving chamber.

Roll arrangement

To increase the load-carrying capacity or rolling capacity of a roll assembly in a rolling mill, throttle elements are used, which shut off the lateral flow of the lubricating film in a partial region between the roll neck and the bearing surface of the roll neck bearing assembly, thereby bringing about an increase in pressure in the lubricating film. At least one throttle element is embodied as an annular segment, forming an angular shut-off region for the lubricant in the annular gap. The invention makes it possible for existing installations to be easily retrofitted, without the need for structural modifications. In the case of new installations, the same load-carrying capacity as before can be provided while the dimensions of the installation space are reduced. The load-carrying capacity of the bearing assembly can be flexibly adjusted based on the dimensions of the shut-off region for the flow of lubricant.

Roll assembly for rolls in a rolling mill

A device for cooling a roll for rolling materials, including a cooling shell opposite a sub-region of the roll surface circumference, for forming a cooling gap, through which a cooling fluid can flow, between the sub-region and the cooling shell. The device further includes a first lever which can be pivoted about a suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to a first end region of the cooling shell, when viewed in the circumferential direction of the roll, and a second lever which can be pivoted about another suspension point, which can be pivoted toward the roll surface, and which is rotatably connected to the second end region of the cooling shell, when viewed in the circumferential direction of the roll, such that the cooling gap can be selectively reduced or increased by pivoting the levers.

Device for cooling rolls

The application is directed to a device (') for cooling a roll (), in particular a working roll () for rolling rolling stock (), wherein the device comprises a cooling shell () which lies opposite at least one part region of the circumference of the roll surface for forming a cooling gap () between the part region of the roll surface and the cooling shell (), through which cooling gap () cooling fluid can flow, and a lever () which can be pivoted about a suspension point (), can be pivoted in the direction of the roll surface and is connected rotatably to a first half () of the cooling shell () as viewed in the circumferential direction (U) of the roll (), wherein the cooling gap () can optionally be reduced in size or enlarged by pivoting of the lever (). Furthermore, the device according to the invention comprises a variable-length linear guide () which can be pivoted about a further suspension point () and is connected rotatably to the second half () of the cooling shell () as viewed in the circumferential direction (U) of the roll ().

The invention is directed to a device for straightening a stream of a cooling medium for cooling a roll or a metal strip. This device comprise a hollow body, extending over at least part of the width of the roll or the metal strip, and a tube, arranged in the hollow body and extending in the direction of the width of the roll or the metal strip, wherein the hollow body is divided in the direction of the width of the roll or the metal strip into a number of chambers, and the tube comprises openings for introducing cooling medium into the chambers of the hollow body, and the chambers respectively comprise an opening for the flowing out of cooling medium from the hollow body. Furthermore, according to the invention the chambers, respectively, comprise a channel, formed between the inner wall of the hollow body and the tube, for conducting cooling medium from the openings of the tube to the opening for the outflow of cooling medium from the hollow body, wherein the flow cross-section of the channel narrows art least at its downstream end.

Device for straightening a flow for cooling a roll or a metal strip

A roll stand for rolling metallic strips includes at least one roll or cylinder which is respectively mounted in a mounting on rolling bearings in the region of its end journals, and at least one distributing device for distributing a lubricant-gas flow. The roll stand according to the invention makes it easily possible in an operationally reliable manner to supply a rolling bearing, provided for mounting a roll or cylinder, with a precisely determined amount of lubricant. This is achieved according to the invention in that a connecting channel for the transport of a lubricant-gas flow to or from the distributing device is molded into the roll or cylinder.

Roll stand for rolling metallic strips and roll or cylinder for a roll stand of this type

The invention relates to an installation part for mounting an upper support roll in a roll stand. The installation part has, on its cambered side, a lubricant receiving space, from which at least one lubricant drain hole () extends, in the lower region of the installation part, in the direction of the drain side of the installation part. In order to be able to reduce the width in the lower region of the installation part and while guaranteeing the stability of the installation part, it is proposed according to the invention that the distance d from the center point of the lubricant drain hole () to the vertical longitudinal center plane LM of the installation part is &#x2266;half of the diameter of the main hole and that&#x2014;in the vertical longitudinal center plane&#x2014;the vertical minimum distance s from the counter-surface of a ring seal () in the lower region of the installation part to the horizontal tangential plane () at the top edge of the lubricant drain hole is not below a specified minimum clearance threshold value.

Installation part and method for the production thereof

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

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Dillenburg, Germany

Ralf Seidel