WO2017125529A1

WO2017125529A1 - Strand guiding roller for guiding a metal strand in a continuous casting facility

Info

Publication number: WO2017125529A1
Application number: PCT/EP2017/051146
Authority: WO
Inventors: Josef Guttenbrunner; Guenther Deibl; Michael Starrermair
Original assignee: Primetals Technologies Austria GmbH
Priority date: 2016-01-21
Filing date: 2017-01-20
Publication date: 2017-07-27
Also published as: EP3405302C0; EP3405302A1; EP3405302B1

Abstract

The invention relates to a strand guiding roller (1) comprising a stationary shaft (3), at least one roller sleeve (5) coaxially surrounding a shaft section of the shaft (3), and for each roller sleeve (5), at least one cooling channel (40) for receiving a cooling fluid, extending along the inner surface of the roller sleeve (5), and at least one rolling bearing (7) for rotatably mouting the roller sleeve (5) around the shaft (3). The rolling bearing (7) is adjacent to the cooling channel (40) and comprises a bearing inner space (9) which is permeable to the cooling fluid and open to the cooling channel (40), such that cooling fluid can flow through the rolling bearing (7) during operation. In addition, the rolling bearing (7) is made from a corrosion-resistant steel for a lubricant-free operation. Furthermore, the rolling bearing (7) is elastically deformable in at least one direction orthogonal to a longitudinal axis of the shaft (3).

Description

description

Strand guide roller for guiding a metallic strand in a continuous casting plant

The invention relates to a strand-guiding roller for guiding a metallic strand in a continuous casting plant and to a process for cooling a strand-guiding roll. In continuous casting, a metallic strand formed in a mold is guided in a strand guide, supported and further cooled. Usually, the supports and Füh ^¬ ren of the semi-solidified or solidified strand is carried out by so-called strand guiding rollers. In addition, the strand can be cooled by cooled strand guide rollers.

For example, several roller shells a Strangfüh ^¬ approximately roll are arranged on a common rotating axis, which is like supported at their ends and between the roller shells with roller bearings, wherein the roller shells are Peripherals cooled, ie wherein the roller shells directly (with a cooling ^¬ liquid usually with water). Or the strand guide rollers are each formed as peripherally cooled full rolls, at the ends of the shaft stub with rolling bearings are supported.

The bearings of the strand guide rollers are usually in bearing blocks, which are cooled by a water cycle. In the process, care must be taken to ensure that no water gets into the bearings. This is usually achieved by a barrier lubrication, is set ^¬ for the additional fat, ie fat that is not needed for the actual function of the bearings. This fat comes out, ver ^¬ mixes with the cooling water and must be separated with a high technical effort again from the water.

In the case of strand guide rollers with peripheral-cooled roller shells, the roller shells are usually provided with another Cooled water cycle, the cooling water is introduced by means of a separate rotary inlet, which is a complex and sensitive ^¬ component for the function of Strangfüh ^¬ tion role.

The invention has for its object to provide a Strangfüh ^¬ tion role for guiding a metallic strand in a continuous casting, which works reliably even in lubricant-free operation. In addition, a method for operating the strand guide roller according to the invention is angege ^¬ ben.

The object is achieved according to the invention in terms of Strangfüh ^¬ tion role by the features of claim 1. Advantageous embodiments of the invention are the subject of the subclaims.

A strand-guiding roll according to the invention for guiding a metallic strand in a continuous casting installation comprises a fixed axis, at least one an axle portion of the axle coaxially surrounding the roll shell, and for each Rol ^¬ lenmantel at least one extending along an inner surface of the Rol ^¬ lenmantels cooling channel for receiving a Kühlflu- ids and for cooling the roll mantle. Furthermore, the strand-guiding roller for each roller casing has at least one roller bearing arranged between the axle section surrounded by the roller casing and the roller casing for mounting the roller casing rotatably about the axis. In this case, the rolling bearing is adjacent to a cooling channel and has a permeable for cooling fluid and to open the cooling channel bearing interior, so that the rolling bearing in operation, the cooling fluid may be flowing through ^¬.

The strand guiding rollers according to the invention are thus designed as a "shell roles", the roller shells are rotatably mounted about a fixed axis ^¬ standing. Such Strangfüh ^¬ approximately roll are much simpler and thus more cost-effective and maintenance-friendly than strand guide roll with roll shells firmly attached to a rotatable shaft. In addition, since the strand guide rollers have fixed axes, a bearing block cooling can be omitted. Through the cooling passage is achieved in a simple manner a peripheral ^¬ cooling of the strand guide roller without problems need to be addressed by the peripheral cooling usually in the use of conventional roller bearings and / or rotary axes. Since the strand guide roller having a fixed axis namely, no aufwän ^¬ ended and repair-prone rotary inlet for the introduction of cooling liquid is required. Since the rolling bearings are designed to be permeable to the cooling fluid, they need not be protected against the entry of cooling fluid such as cooling water as conventional rolling bearings. In particular, eliminating the ^¬ se storage of the roll coats the need to again with consuming water mixing grease, which is used to protect bearings from the ingress of cooling water, again consuming to separate from the water. The peripheral cooling also allows the use of the strand guide roller for a dry casting operation, that is, for a continuous casting without cooling the strand by spraying with cooling liquid.

The invention provides that the rolling bearing is designed for operation in a lubricant-free (i.e., without a grease or grease)

Oil lubrication) environment is suitable.

By a lubricant-free design of the bearings, a grease or oil lubrication system can be omitted, whereby the environmental load is reduced and the maintenance friendliness of the strand guide roller is further improved.

In order to make the rolling bearing suitable for the lubricant-free operation, the rolling bearing according to the invention is made of a corrosion-resistant steel such as martensitic stainless steel (eg X46Cr13, material No. 1.4034, X90CrMoVl8, material No. 1.4112, or Xl05CrMoVl8, Material number . 1.4125), or an austenitic, corrosion ^¬ resistant stainless steel manufactured.

As a result, the rolling bearing is protected against corrosion caused by the contact of the rolling bearing with the cooling fluid.

In addition, each roller bearing has a voltage applied to a roller shell and extending around the axis of the outer ring, a voltage applied to the axis and extending around the axis inner ring and a plurality of arranged between the outer ring and the inner ring rolling elements.

Finally, in order to increase the reliability of the rolling bearing, the rolling bearing is designed as a so-called spring roller bearing, wherein the outer ring and / or the inner ring and / or the rolling elements of the rolling bearing are elastically deformable in at least one orthogonal to a longitudinal axis of the axis direction. With this design, the roller bearing in a direction transverse to the axial direction on a certain elasticity, so that the jamming of the bearing is prevented even in lubricant-free operation. In addition, when mounting the spring roller bearings in the gaps between the spring bands, a grease filling can be introduced so that the rolling bearing functions reliably even during the demanding commissioning phase. Finally, this design is less susceptible to dirt during operation, as it can be stored in the gaps between the spring bands and thus jamming is prevented. This embodiment of the invention provides for the storage of the roller shell particularly suitable, from the cooling fluid through ^¬ flowable before rolling bearings. By rolling bearings with elastically deformable outer rings, inner rings and / or rolling elements, these bearings can be particularly flexible and fit between the fixed axis and a roller shell of a strand guide roller. As a result, for example, caused by temperature fluctuations distance changes or elastic deformations are balanced by loading between the fixed axis and the roller shell.

Rolling with circular cylindrical rolling elements having a cylinder axis parallel to a longitudinal axis of the axis, advantageously allow a stable due to the larger Längsaus ^¬ the rolling elements against, for example, spherical rolling elements and the rolling bearing punctually less be ^¬ bearing bearing of the roll shell.

It is advantageous if the cooling channel is sealed on a front side of the strand guide roller by a seal holder with egg ^¬ ner seal between the roller shell and the Dichtungshal ^¬ sion.

To prevent overheating of the strand guide roller, especially at a standstill thereof, significantly, the roller shell advantageously in the radial direction outside the seal on a connected to the cooling channel annular cavity. As a result, the particularly temperature-sensitive dy ^¬ namic seal is reliably cooled and extends its durability.

A further embodiment of the invention provides at least ei ^¬ NEN along an inner surface of a roller shell durau ^¬ fenden cooling channel. Additionally or alternatively, at least one cooling channel may be formed as a bore in the roller ^casing . For example, a Kühlka ^¬ nal runs at least helically about the axis along an inner surface ei ^¬ nes roll shell and / or at least one cooling passage extends alternately tangentially around which and subsequently in axia ^¬ ler direction.

By a helically extending cooling channel, a uniform cooling of the entire surface of a roll shell can be achieved advantageous ^¬ way. Further, a Strömungsge ^¬ speed of the cooling fluid can be adjusted so that the best possible removal of heat from the surface of the roller mantels takes place. Furthermore, can be set by a suitable Di ^¬ dimensioning of the cooling channel, the flow velocity, is that the formation of deposits on the walls of the cooling fluid is prevented or reduced. Radial or annular cooling channels running around the axis have the advantage of being geometrically simpler and thus also easier to implement.

A further embodiment of the invention provides at least one tube-like cooling fluid guide sleeve arranged between the axle and a roller casing, which has at least one groove-like cooling channel recess facing the roller casing for forming a cooling channel. This embodiment of the invention advantageously makes it possible to form cooling channels for cooling thereof by means of suitably designed cooling fluid guide sleeves on roller shells.

It is also advantageous if the seal holder and the rolling bearing or between the roller bearing and the Kühlfluidleith sleeve in the axial direction of a thrust washer to compensate for axial relative movements is arranged. The wear of the thrust washer is particularly low when the starting disc ^¬ is made of polyetheretherketone (PEEK).

A further embodiment of the invention provides that the axis has at least one fillable with cooling fluid cooling cavity, which is connected with at least one storage compartment of a rolling ^¬ bearing and with at least one cooling channel, so that the cooling cavity, the bearing compartment and the cooling channel a continuous receiving space for Forming cooling fluid. A further embodiment of this embodiment of the invention provides that all the cooling channels, bearing internal spaces of Wälzla ^¬ ger and cooling cavities are connected to a contiguous receiving space for the cooling fluid.

These embodiments of the invention advantageously combine an internal cooling of the strand guide roller by with the cooling fluid-fillable cooling cavities in the axis with peri ^¬ pheriekühlung connected by such cooling cavities cooling channels for direct cooling of roll coats. A further embodiment of the invention provides that each roller shell is rotatably supported by two rolling bearings relative to the axis.

As a result, a stable and uniform storage of the roller shells is realized.

A further embodiment of the invention provides that a plurality of roller shells are arranged one behind the other along the axis.

Characterized the length of each roller shells may be reduced, which advantageously simplifies the manufacture and transport of the roller shells and allows the use of moderate ausgeleg ^¬ ter rolling bearing for supporting the roller shells at the festste- Henden axis. Also allows Strangfüh ^¬ approximately roll with a plurality of successively arranged roller shells an intermediate support of the shaft in the areas between two neighboring roller shells and thereby reducing deformation by the load of the Rollenmän- tel during operation in a continuous casting plant.

A continuous casting plant according to the invention has several behind ^¬ successively arranged strand guiding rollers according to the invention with the above advantages.

The inventive object is also achieved by the procedural ^¬ ren for cooling a strand guide roller having a cooling fluid according to claim 10th In this case, the cooling fluid is introduced from a coolant supply into an axially arranged axis cavity of the stationary axis of the strand guide roller. Since the axis is at a standstill ^¬, this can without complicated and maintenance-intensive Turning done. Subsequently, the cooling fluid is diverted into at least one substantially radially disposed Radialöff ^¬ voltage of the strand guide roller. As a result, the cooling fluid is directed from the typically centrally arranged hollow space in the direction of the roller shell. Then, the cooling ^¬ fluid is introduced into a ring cavity, whereby the seal is cooled via the web between the annular cavity and the seal. After this step, the rolling bearing, preferably ^¬ in the axial direction, flows through. This cools the bearing and removes any wear from the bearing. Thereafter, the cooling fluid is introduced into an arranged between the roller shell and the stationary axis coolant channel and the cooling passage flows through, whereby the roller shell is abge ^¬ cooled.

It is advantageous if the cooling medium is supplied through a plurality before Trains t ^¬ at least four radial openings the annular cavity. This ensures a uniform speed ^¬ profile in the flow through the bearing.

It is advantageous if the cooling medium flows through the coolant channel in the axial and in the tangential direction along a cooling fluid guide sleeve. As a result, on the one hand, a high flow rate is achieved, which in turn has a favorable effect on the heat dissipation from the hot roller shell. In addition to ^¬ a uniform temperature distribution of the roll shell in the axial and tangential direction is achieved.

After flowing through the coolant channel, a second rolling bearing is advantageously flowed through and the cooling fluid introduced into a second annular cavity, then the cooling fluid is diverted into a further at least one radial Radialöff ^¬ tion, redirected from the radial direction in an axial direction and in the axial axis cavity initiated. For example, the supply and discharge of the cooling fluid is separated by a plug of the axial ^¬ cavity.

Finally, the cooling fluid is discharged from the axle cavity. The derivative can either be on the same page as the introduction or on the opposite side of the introduction.

The above-described characteristics, features and advantages of this invention as well as the manner in which they will be achieved will become clearer and more clearly understood in connection with the following description of embodiments which will be described in connection with the drawings. Showing:

1 is a broken and partially cut Darge ^¬ presented side view of a strand guide roller,

2 shows schematically a section of a continuous casting plant, and

3 shows a detail of a sectional view with a side view of another strand guide roller. Corresponding parts are provided in the figures with the same reference numerals.

1 shows a partial side view of an ERS ^¬ th embodiment of a strand guide roller 1, the strand guide roller 1 is shown broken in order to make the interior of the strand guide roller 1 visible, and wherein the interior is shown in section.

The path of the cooling fluid is represented in the figures by arrows.

The strand guide roller 1 comprises a fixed axle 3, a roller casing 5, rolling bearings 7, a Kühlfluidleithül- se 11, seal holders 13, thrust washers 15, support blocks 17, sealing rings 19, a seal 20 and a Schmutzdich ^¬ tion 21, at least one plug 24th and Kühlfluidzuführun- gene 26. In Figure 1, a portion of the strand guide roller 1 and the Kühlfluidleith 11 are each in the range first end of the strand guide roller 1 shown. In this section are each only a rolling bearing 7, a seal holder 13, a thrust washer 15, a support block 17, a plug 24 and a cooling fluid supply 26. A first end opposite the second end of the strand guide roller 1 is like the first shown in Figure 1 En ^¬ de and in particular also each comprises a roller bearing 7, a seal holder 13, a thrust washer 15, a support block 17, a cooling fluid supply 26 and optionally another plug 24. The axis 3, the roller shell 5 and a support block 17 are shown in FIG shown broken.

The axis 3 is formed as a tubular hollow body with an annular cross-section which surrounds an axially extending circle cylindrical axis cavity 28. Arranged within the axial cavity 28 is at least one plug 24 defining the axial cavity 28 defining a cooling cavity 30 between it and a cooling fluid supply 26 in the axial cavity 28, into and out of which a cooling fluid passes through an orifice (not shown) in the cooling fluid supply 26 is conductive. The plug 24 can be inserted into the axle cavity 28 through a plug rod 25 connected to it.

The roller shell 5 is formed like a tube with an annular cross-section and surrounds an axis portion of the axis 3 coaxially. Between the roller shell 5 and the axis 3, the seal holders 13, the Kühlfluidleithhülse 11 and the bearings 7 are arranged.

Each seal holder 13 is arranged between an end region of the roll mantle 5 and the axis 3, surrounds the axis 3 Se ^¬ ring and is fixedly connected to the axis 3. Each seal holder 13 has on the axis side a plurality of annular recesses, in each of which a first sealing ring 19 is arranged, which rests against the axis 3 and surrounds this ringför ^¬ mig. Roller shell side, each seal holding tion 13 two further annular recesses in which a dirt seal 21 and a seal 20 are arranged, which rests against the roller shell 5 and against which the Rol ^¬ lenmantel 5 is movable. The disposed closer to the end of the roll 5 Rollenman- means of shell-side dirt seal 21 serves to seal against dirt from the environment of the strand guide roller 1, the seal 20 serves to seal against leakage of cooling fluid from the Strangführungsrol ^¬ le. 1

Furthermore, each seal holder 13 has a Halterungsöff ^¬ opening 32 which connects a radial opening 34 in the axis 3 with a cooling fluid chamber 31 between the seal holder 13 and the rolling bearing 7. In this case, the radial opening 34 is connected to a cooling cavity 30 of the axis 3, so that through the radial opening 34 and the support opening 32 cooling fluid between the cooling cavity 30 and the cooling fluid chamber 31 can flow. The Kühlfluidleithül 11 is disposed axially between the rolling bearings 7, formed like a tube and surrounds the axis 3 koa ^¬ xial. The Kühlfluidleithülse 11 has a the roller shell 5 facing groove-like Kühlkanalausnehmung 38 which heli ^¬ x runs around the axis 3 around. The Kühlkanalausneh- mung 38 thereby forms a continuous cooling channel 40, which extends helically along the inner surface of the means of Rollenman ^¬. 5

By the rolling bearing 7 of the roller shell 5 is rotatably mounted about the axis 3. Each roller bearing 7 has a voltage applied to the roller shell 5 and extending around the axis 3 Au ^¬ ßenring 7.1, a voltage applied to the axis 3 and extending around the axis 3 inner ring 7.2 and more arranged between the outer ring 7.1 and the inner ring 7.2 rolling elements 7.3. Here, the outer ring is 7.1 (it would be possible but also the inner ring 7.2 and / or the rolling elements 7.3) of the rolling bearing 7 made of a corrosion-resistant spring band, so that the rolling bearing (also called spring roller bearing) in to a longitudinal axis of the axis 3 orthogonal directions formed elastically deformable. The roller bearings 7, ie the outer rings 7.1, inner rings 7.2 and rolling elements 7.3, are made of a corrosion-resistant steel in order to be protected against corrosion by contact with the cooling fluid.

Each rolling bearing 7 has a lying between the outer ring 7.1 and the inner ring 7.2 bearing interior 9, which is permeable to the cooling fluid and the cooling channel 40 and adjacent to the rolling bearing 7 cooling fluid chamber 31 open, so that the cooling fluid through the bearing interior 9 between the Cooling fluid chamber 31 and the cooling passage 40 can flow. Thereby forming the cooling cavities 30 and radial openings 34 in the axis 3, the mounting holes 32, the cooling fluid chambers 31, the bearing inner spaces 9 of the bearings 7 and the cooling channel 40 a contiguous receiving space for cooling fluid for cooling the roller shell 5. The cooling fluid is through at least one opening in a cooling fluid supply 26 introduced into this receiving space and passed through at least one opening in the other cooling fluid supply 26 out of it.

The annular starting disks 15 are each arranged as a buffer for receiving axial forces between a seal holder 13 and the outer ring 7.1 of a roller bearing 7. Optionally, a securing ring 22 for fixing the position of the rolling bearing 7 is arranged on one of the adjacent seal holders 13 facing the end of the inner ring 7.2 of each Wälzla ^¬ gers 7. Alternatively, the starting discs 15 can be arranged for receiving the axial forces between the roller shell 5 and the inner ring 7.2 or between the Kühlfluidleithülülse 11 and the inner ring 7.2. The Kühlfluidleithül 11 11 may at Be ^¬ may, for example, positively and non-positively by pressing, be connected to the roller shell 5.

The support blocks 17 annularförmig each surround an end portion of the axis 3 and serve to support the strand guide rail le 1 against a supporting (not shown) component. Each support block 17 abuts one end of the adjacent seal holder 13, which protrudes from the roller shell 5. The illustrated in Figure 1 embodiment of a strand ^{¬ guide} roller 1 can be modified in many ways who ^¬ . For example, instead of through the axle cavity 28 and plug (s) 24, the cooling cavities 30 may be formed by bores in the axle 3 that do not extend along the entire axis 3, but form only the cooling cavities 30. Alternatively or additionally, the number of sealing rings 19, the seals 20 or the dirt seals 21 with respect to Figure 1 can be changed. For example, all or some sealing rings 19 can be dispensed with and / or a plurality of seals 20 of the same function can be arranged on a sealing holder 13. The cooling channel 40 may also be formed by a bore in the roller casing 5 instead of a cooling fluid guide sleeve 11, and / or a plurality of cooling channels 40 may be formed on or / and in the roller casing 5 instead of just one cooling channel 40. Further, the Strangfüh ^¬ tion roller 1 instead of only a roller shell 5 more along the axis 3 successively arranged roller shells 5 aufwei ^¬ sen, the roller shells 5 may be the same or different (in ^¬ example, with regard to the formation of the cooling channels 40).

FIG. 2 schematically shows a detail of a continuous casting plant 100 in a plan view. Shown are a Kokil ^¬ le 102 of the continuous casting 100 and a plurality of the mold 102 downstream and successively arranged strand guide rollers ^¬ 1. The mold 102 serves to form a strand, which is guided with the strand guide rollers 1 and supported.

Finally, FIG. 3 shows a detail of a variant of the strand guide roller according to FIG. In contrast to Figure 1, this strand guide roller 1, for example, a ring ^¬ cavity 41, which lies in the radial direction outside of the seal 20, so that the temperature-sensitive seal 20th is cooled suffi ^¬ accordingly even at a standstill of the strand guide roller. 1 Since the dirt seal 21 for example. Felt is, it is not necessary iA, this also to cow ^¬ len. The ingress of dirt into the annular cavity 41 or into the bearing interior 9 is additionally prevented by a shut-off plate 42 in addition to the dirt seal 21. The fluid-tight seal of the annular cavity 41 takes over the seal 20, which is designed as a shaft seal. The rolling bearing 7 itself as shown in Figure 1 as a spring roller bearing. Between the roller bearing 7 and the Kühlfluidleith 11 a stop ring 15 made of high-performance plastic PEEK is ^¬ assigns. By the stop ring 15 relative movements, eg due to different thermal expansions, and axial forces in the strand guide roller 1 are compensated, without causing jamming. It is also particularly favorable in the illustrated embodiment that the cooling fluid is introduced through 6 radial openings 34 in the annular cavity 41, resulting in a very uniform flow (and thus a uniform temperature distribution) in the rolling bearing 7 results. This measure also contributes to the robustness of

Strand guide roller 1 at. During operation of the strand guide roller 1, a cooling fluid is introduced into the axle cavity 28 from a coolant supply (not shown separately here), the cooling fluid subsequently diverted into six radial openings 34 and introduced into the annular cavity 41 via the mounting opening 32. As a result, the seal 20, in particular a sealing lip, which bears against the roller casing 5, is cooled via the web between the annular cavity 41 and the seal 20. The web can either be integral with the roller shell or be connected by welding with roller shell 5, for example. Subsequently, the rolling bearing 7 is flowed through and the cooling fluid is introduced into the cooling passage 40. After the helical flow through the cooling channel 40, the cooling fluid flows through a further roller bearing on the right side of the strand guide roller and is introduced into a further annular cavity. Thereafter, the cooling fluid is in turn introduced through further radial openings in a further axis cavity and then discharged. Although the invention in detail by preferred execution ^¬ examples has been illustrated and described in detail, the invention is not switched to the disclosed embodiments, side set.

LIST OF REFERENCE NUMBERS

1 strand guide roller

3 axis

5 roller jacket

7 rolling bearings

7.1 outer ring

7.2 Inner ring

7.3 Rolling elements

9 warehouse interior

11 cooling fluid guide sleeve

13 seal holder

15 thrust washer

17 support block

19 sealing ring

20 seal

21 dirt seal

22 circlip

24 grafts

25 stopper

26 cooling fluid supply

28 axis cavity

30 cooling cavity

31 cooling fluid chamber

32 mounting opening

34 radial opening

38 cooling channel recess

40 cooling channel

41 ring cavity

42 shut-off plate

100 continuous casting plant

102 mold

Claims

claims

A strand guide roll (1) for guiding a metallic strand in a continuous casting plant (100) comprising

a fixed axle (3),

- at least one axis a portion of the axle (3) koaxi ^¬ al surrounding roller shell (5),

- for each roller shell (5) at least one runs along the inner face ^¬ In the roller shell (5) cooling channel (40) for receiving a cooling fluid and to cool the Rollenman ^¬ means of (5),

and for each roller casing (5) at least one roller bearing (7) arranged between the axle section surrounded by the roller casing (5) and the roller casing (5) for rotatably supporting the roller casing (5) about the axis (3),

- wherein the rolling bearing (7) adjacent to a cooling channel (40) and having a cooling fluid permeable and the Kühlka ^¬ nal (40) open bearing interior (9), so that the rolling bearing (7) is flowed through during operation of the cooling fluid, wherein the rolling bearing (7) made of a corrosion resistant

Steel is made and designed for a lubricant-free operation,

- Wherein the rolling bearing (7) on a roller shell (5) and adjacent to the axis (3) extending outer ring (7.1), one on the axis (3) and adjacent to the axis (3) extending inner ring (7.2) and more between the outer ring (7.1) and the inner ring (7.2) arranged rolling elements (7.3), and

- At least one element from the group of the outer ring (7.1), the inner ring (7.2) and the rolling elements (7.3), wenigs ^¬ least one rolling bearing (7) in at least one orthogonal to a longitudinal ^¬ axis of the axis (3) direction elastic is formed deformable.

2. strand guide roller (1) according to claim 1, characterized in that the cooling channel (40) on an end face of the strand guide roller (1) by a seal holder (13) with a seal (20) between the roller shell (5) and the seal holder (13) is sealed

3. strand guide roller (1) according to claim 2, characterized in that the roller shell (5) in the radial direction au ^¬ ßerhalb the seal (20) with the cooling channel (40) ver ^¬ bound ring cavity (41), so that the Seal (20) is cooled by the cooling fluid even at a standstill of the strand guide roller (1).

4. strand guide roller (1) according to one of the preceding claims, characterized by at least one between the axis (3) and a roller shell (5) arranged tubular Kühlfluidleithülülse (11) with at least one of the Rollenman- tel (5) facing trough-like Kühlkanalausnehmung (38) for forming a cooling channel (40).

5. strand guide roller (1) according to one of the preceding claims, characterized in that at least one Kühlka- channel (40) helically around the axis (3) or alternately tangen ^¬ tial around the axis (3) around and then axially along ei ^¬ ner Inner surface of a roller shell (5) runs.

6. strand guide roller (1) according to one of the preceding arrival-claims, characterized in that between the seal ^¬ holder (13) and the rolling bearing (5) or the rolling bearing (5) and the Kühlfluidleith sleeve (11) a thrust washer (15) for Compensation of axial relative movements is arranged.

7. strand guide roller (1) according to claim 6, characterized in that the thrust washer is made of polyetheretherketone (PEEK).

8. strand guide roller (1) according to one of the preceding arrival claims, characterized in that the axis (3) wenigs ^¬ least one can be filled with cooling fluid cooling cavity (30) with at least one bearing interior (9) of a rolling bearing (7) and with at least one cooling channel (40) is bounded, so that the cooling cavity (30), the bearing interior (9) and the cooling channel (40) form a contiguous receiving space for cooling fluid.

9. strand guide roller (1) according to claim 8,

characterized in that all the cooling channels (40), Lagerin ^¬ nenräume (9) of the rolling bearing (7) and cooling cavities (30) are connected to ei ^¬ nem contiguous receiving space for cooling fluid.

10. A method for cooling a strand guide roller (1), in ^¬ particular according to one of the preceding claims, with a cooling fluid,

- wherein the strand guide roller (1) has a stationary axis (3) with an axial axis cavity (28) and a roller shell (5),

- wherein the roller shell (5) relative to the axis (3) by at least one rolling bearing (7) is rotatably mounted, and a cooling channel (40) between the roller shell (5) and the axis (3), wherein the cooling channel (40) is sealed at the end by a seal holder (13) with a seal (20),

- At least one element from the group of the outer ring (7.1), the inner ring (7.2) and the rolling elements (7.3), wenigs ^¬ least one rolling bearing (7) in at least one orthogonal to a longitudinal ^¬ axis of the axis (3) direction elastic deformable, comprising the steps:

- introducing the cooling fluid from a coolant supply (26) into the axial axial cavity (28);

- diverting the cooling fluid into at least one substantially radial radial opening (34) of the strand guide roller (1); - introducing the cooling fluid into a ring cavity (41) whereby the cooling fluid in the annular cavity (41) cools the seal (20);

- Flow through the rolling bearing (7);

- Introducing the cooling fluid in the cooling channel (40);

- Flow through the cooling channel (40), whereby the roller shell (5) is cooled.

11. The method according to claim 10, characterized in that the cooling medium is diverted by a plurality, preferably at least four, Radi ^¬ alöffnungen (34).

12. The method according to claim 10 or 11, characterized in that the cooling medium flows through the cooling channel (40) in the axial and in the tangential direction along a Kühlfluidleith sleeve (11).

13. The method according to any one of claims 10 to 12, characterized by

- The flow through a second rolling bearing;

- introducing the cooling fluid into a second annular cavity (41), whereby the cooling fluid in the second annular cavity cools a second seal;

- The redirecting the cooling fluid in a further at least one substantially radial radial opening of the strand guide roller

(1) ; and

- Deriving the cooling fluid from an axial axis cavity in a coolant discharge.