EP3405302B1 - Rouleau de guidage de produit filé pour le guidage d'un produit filé métallique dans une installation de coulée continue - Google Patents

Rouleau de guidage de produit filé pour le guidage d'un produit filé métallique dans une installation de coulée continue Download PDF

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Publication number
EP3405302B1
EP3405302B1 EP17700969.3A EP17700969A EP3405302B1 EP 3405302 B1 EP3405302 B1 EP 3405302B1 EP 17700969 A EP17700969 A EP 17700969A EP 3405302 B1 EP3405302 B1 EP 3405302B1
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EP
European Patent Office
Prior art keywords
roller
axle
coolant
cooling
bearing
Prior art date
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EP17700969.3A
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German (de)
English (en)
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EP3405302A1 (fr
EP3405302C0 (fr
Inventor
Josef Guttenbrunner
Günther DEIBL
Michael Starrermair
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Primetals Technologies Austria GmbH
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Primetals Technologies Austria GmbH
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Publication of EP3405302C0 publication Critical patent/EP3405302C0/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
    • B22D11/1287—Rolls; Lubricating, cooling or heating rolls while in use

Definitions

  • the invention relates to a strand guide roller for guiding a metallic strand in a continuous casting installation and a method for cooling a strand guide roller.
  • a metallic strand formed in a mold is guided in a strand guide, supported and further cooled.
  • the partially solidified or fully solidified strand is usually supported and guided by so-called strand guide rollers.
  • the strand can be cooled by cooled strand guide rollers.
  • a strand guide roll For example, several roll shells of a strand guide roll are arranged on a common rotating axle, which is supported at its ends and between the roll shells with roller bearings, the roll shells being peripherally cooled, i. H. whereby the roller shells are cooled directly with a cooling liquid (usually water).
  • the strand guide rollers are each designed as peripherally cooled solid rollers, at the ends of which shaft sockets are supported with roller bearings.
  • the bearings of the strand guide rollers are usually located in bearing blocks that are cooled by a water circuit. Care must be taken in the design to ensure that no water gets into the bearings. This is mostly achieved by a barrier lubrication, for which additional grease is used, i. H. Grease that is not required for the actual function of the roller bearing. This grease escapes, mixes with the cooling water and has to be separated from the water again with a great deal of technical effort.
  • the roll shells are usually fitted with another Cooled water circuit, the cooling water is introduced by means of a separate rotary inlet, which is a complex and sensitive component for the function of the strand guide roller.
  • a strand guide roller for guiding a metallic strand in a continuous casting plant comprising a fixed axle, several roller shells, each of which coaxially surrounds an axial section of the axle, for each roller shell at least one cooling channel running along the inner surface of the roller shell for receiving a cooling fluid for cooling the roller shell , and for each roller shell at least one needle bearing arranged between the axle section and the roller shell for rotatably supporting the roller shell about the axis, the needle bearing adjoining a cooling channel and having a bearing interior that is permeable to the cooling fluid and open to the cooling channel, so that the needle bearing is operational is flowed through by the cooling fluid, the needle bearing having an outer ring which rests against a roller jacket and runs around the axis, an inner ring which rests against the axis and runs around the axis, and a plurality of rolling elements which are arranged between the outer ring and the inner ring.
  • a strand guide roller with a lubricant-free bearing is known.
  • the bearing features resilient inner and outer races to prevent seizing due to thermal deformation of the roller shell.
  • the invention is based on the object of specifying a strand guide roller for guiding a metallic strand in a continuous casting plant, which also functions reliably in lubricant-free operation.
  • a method for operating the strand guide roller according to the invention is to be specified.
  • a strand guide roll according to the invention for guiding a metallic strand in a continuous casting plant comprises a fixed axle, at least one roll shell coaxially surrounding an axial section of the axle, and for each roll shell at least one cooling channel running along an inner surface of the roll shell for receiving a cooling fluid and for cooling the roll shell.
  • the strand guide roller for each roller shell has at least one roller bearing arranged between the axle section surrounded by the roller shell and the roller shell for supporting the roller shell rotatably about the axis.
  • the roller bearing is adjacent to a cooling channel and has a bearing interior that is permeable to cooling fluid and open to the cooling channel, so that cooling fluid can flow through the roller bearing during operation.
  • the rolling bearing which is made of corrosion-resistant steel and designed for lubrication-free operation, has an outer ring that rests against a roller shell and runs around the axis, an inner ring that rests against the axis and runs around the axis, and a plurality of rolling elements arranged between the outer ring and the inner ring. At least one element from the group of the outer ring, the inner ring and the rolling bodies, at least one rolling bearing is designed to be elastically deformable in at least one direction orthogonal to a longitudinal axis of the axis, and at least one cooling channel runs helically around the axis along an inner surface of a roller shell.
  • the strand guide rollers according to the invention are therefore designed as "shell rolls” whose roll shells are mounted so as to be rotatable about a fixed axis.
  • Such strand guide rollers have a much simpler design and are therefore cheaper and easier to maintain than strand guide rollers with roller shells that are fixedly mounted on a rotatable axis. Since the strand guide rollers have fixed axes, bearing block cooling can also be omitted.
  • Peripheral cooling of the strand guide roller is achieved in a simple manner by the cooling channel, without the peripheral cooling having to overcome problems that usually occur when using conventional roller bearings and/or rotating axes. Since the strand-guiding roller has a fixed axis, no complex and repair-prone rotary inlet for introducing cooling liquid is required. Since the roller bearings are designed to be permeable to the cooling fluid, they do not need to be protected against the ingress of cooling fluid, such as cooling water, as is the case with conventional roller bearings. In particular, this bearing of the roller shells eliminates the need to laboriously separate grease that mixes with cooling water and is used to protect roller bearings from the ingress of cooling water. The peripheral cooling also allows the strand guide roller to be used for dry casting, that is to say for continuous casting without cooling the strand by spraying it with cooling liquid.
  • the invention provides that the rolling bearing is suitable for operation in a lubricant-free (i.e. without grease or oil lubrication) environment.
  • a lubricant-free design of the roller bearings means that a grease or oil lubrication system can be omitted, which reduces the environmental impact and further improves the ease of maintenance of the strand guide roller.
  • the roller bearing according to the invention is made of a corrosion-resistant steel, such as a martensitic, corrosion-resistant stainless steel (e.g. X46Cr13, material no. 1.4034; X90CrMoV18, material no. 1.4112; or X105CrMoV18, material -No. 1.4125), or an austenitic, corrosion-resistant stainless steel.
  • a corrosion-resistant steel such as a martensitic, corrosion-resistant stainless steel (e.g. X46Cr13, material no. 1.4034; X90CrMoV18, material no. 1.4112; or X105CrMoV18, material -No. 1.4125), or an austenitic, corrosion-resistant stainless steel.
  • each roller bearing has an outer ring that rests against a roller jacket and runs around the axis, an inner ring that rests against the axis and runs around the axis, and a plurality of rolling elements arranged between the outer ring and the inner ring.
  • the roller bearing is designed as a so-called spring roller bearing, the outer ring and/or the inner ring and/or the roller bodies of the roller bearing being elastically deformable in at least one direction orthogonal to a longitudinal axis of the axis.
  • the rolling bearing has a certain elasticity in a direction transverse to the axial direction, so that the rolling bearing is prevented from jamming even in lubricant-free operation.
  • a grease filling can be introduced into the gaps between the spring strips, so that the roller bearing also functions reliably during the demanding commissioning phase.
  • this design is less sensitive to dirt during operation, since dirt can accumulate in the gaps between the spring strips, thus preventing jamming.
  • This embodiment of the invention provides for the bearing of the roller shell particularly suitable roller bearings through which the cooling fluid can flow.
  • roller bearings with elastically deformable outer rings, inner rings and/or rolling bodies, these roller bearings can be arranged in a particularly flexible and suitable manner between the stationary axle and a roller shell of a strand guide roller.
  • changes in distance caused, for example, by temperature fluctuations or elastic deformations caused by loading between the stationary axle and the roller shell can be compensated for.
  • Rolling bearings with circular-cylindrical rolling elements which have a cylinder axis parallel to a longitudinal axis of the axis, advantageously allow the roller shell to be supported more stably and with less stress on the roller bearing at certain points due to the greater longitudinal extent of the rolling elements compared to, for example, spherical rolling elements.
  • cooling channel is sealed off on an end face of the strand guide roller by a seal holder with a seal between the roller shell and the seal holder.
  • the roller shell advantageously has an annular cavity connected to the cooling channel in the radial direction outside the seal. This reliably cools the particularly temperature-sensitive dynamic seal and extends its service life.
  • At least one cooling channel running along an inner surface of a roller shell is provided.
  • at least one cooling channel can be formed as a bore in the roller shell.
  • at least one cooling channel runs helically around the axis along an inner surface of a roller shell.
  • the helical cooling channel achieves uniform cooling of the entire surface of a roller shell. Furthermore, a flow rate of the cooling fluid can be adjusted in such a way that the heat dissipation from the surface of the roller shell is as optimal as possible. Furthermore, by suitably dimensioning the cooling channel, the flow rate can be set in such a way that the formation of deposits on the walls from the cooling fluid is prevented or reduced. Cooling channels running in a straight line or in a ring around the axis have the advantage to be geometrically simpler in design and therefore easier to implement.
  • a further embodiment of the invention provides at least one tubular cooling fluid guide sleeve arranged between the axle and a roller shell, which sleeve has at least one channel-like cooling channel recess facing the roller shell for forming a cooling channel.
  • This embodiment of the invention advantageously makes it possible to form cooling channels for cooling the roller shells by means of suitably designed cooling fluid guide sleeves.
  • a thrust washer is arranged in the axial direction on the seal holder and the roller bearing or between the roller bearing and the cooling fluid conducting sleeve in order to compensate for relative axial movements.
  • the wear of the thrust washer is particularly low when the thrust washer is made of polyetheretherketone (PEEK).
  • a further embodiment of the invention provides that the axle has at least one cooling cavity that can be filled with cooling fluid, which is connected to at least one bearing interior of a roller bearing and to at least one cooling channel, so that the cooling cavity, the bearing interior and the cooling channel form a coherent receiving space for cooling fluid .
  • a further development of this embodiment of the invention provides that all of the cooling channels, bearing interiors of the roller bearings and cooling cavities are connected to one another to form a coherent receiving space for the cooling fluid.
  • These configurations of the invention advantageously combine internal cooling of the strand guide roller by cooling cavities in the axis that can be filled with the cooling fluid, with peripheral cooling by cooling channels connected to such cooling cavities for direct cooling of roll shells.
  • a further embodiment of the invention provides that each roller shell is rotatably mounted relative to the axis by two roller bearings.
  • a further embodiment of the invention provides that several roller shells are arranged one behind the other along the axis.
  • a strand guide roller with a plurality of roller shells arranged one behind the other enables intermediate support of the axis in areas between two adjacent roller shells and thus a reduction in deformations due to the loading of the roller shells during operation in a continuous casting plant.
  • a continuous casting plant according to the invention has a plurality of strand guide rollers according to the invention arranged one behind the other with the above-mentioned advantages.
  • the object according to the invention is also achieved by the method for cooling a strand guide roller with a cooling fluid according to claim 9.
  • the cooling fluid is introduced from a coolant supply into an axially arranged axis cavity of the stationary axis of the strand guide roller. Because the axis is stationary, this can be done without a complicated and high-maintenance rotary union.
  • the cooling fluid is then diverted into at least one essentially radially arranged radial opening of the strand guide roller. This frees the cooling fluid from the typically centrally located axle cavity Z -space directed towards the roll shell.
  • the cooling fluid is then introduced into an annular cavity, thereby cooling the seal across the web between the annular cavity and the seal.
  • the rolling bearing is traversed, preferably in the axial direction. This cools the bearing and removes any abrasion from the bearing.
  • the cooling fluid is then introduced into a coolant channel arranged between the roller shell and the stationary axle and flows through the cooling channel in a helical manner around the axis along an inner surface of a roller shell, as a result of which the roller shell is cooled.
  • cooling medium is supplied to the annular cavity through a plurality of, preferably at least four, radial openings. This ensures a uniform velocity profile when flowing through the roller bearing.
  • the cooling medium flows through the coolant channel in the axial and in the tangential direction along a coolant-guiding sleeve.
  • this achieves a high flow rate, which in turn has a positive effect on the heat dissipation from the hot roller shell.
  • an even temperature distribution of the roller shell in the axial and tangential direction is achieved.
  • the coolant channel After the coolant channel has flowed through, it advantageously flows through a second roller bearing and the cooling fluid is introduced into a second annular cavity, then the cooling fluid is diverted into at least one further radial opening, diverted from the radial direction into an axial direction and introduced into the axial axis cavity.
  • the axial cavity of the inlet and outlet lines of the cooling fluid is separated by a plug.
  • the cooling fluid is drained from the axle cavity.
  • the derivation can either be on the same page as the introduction or on the opposite side of the introduction.
  • figure 1 shows a detail of a side view of a first exemplary embodiment of a strand guide roller 1, the strand guide roller 1 being shown broken away in order to make the interior of the strand guide roller 1 visible, and the interior being shown in section.
  • the path of the cooling fluid is represented by arrows in the figures.
  • the strand guide roller 1 comprises a fixed axle 3, a roller shell 5, roller bearings 7, a cooling fluid guide sleeve 11, seal brackets 13, thrust washers 15, support blocks 17, sealing rings 19, a seal 20 and a dirt seal 21, at least one stopper 24 and cooling fluid supply lines 26.
  • FIG 1 are each a section of the strand guide roller 1 and the cooling fluid guide sleeve 11 in the area of one first end of the strand guide roller 1 shown. In this section there is only one rolling bearing 7, one seal holder 13, one thrust washer 15, one support block 17, one plug 24 and one cooling fluid supply 26.
  • a second end of the strand guide roller 1 opposite the first end is like that in FIG figure 1 shown first end and in particular also includes a roller bearing 7, a seal holder 13, a thrust washer 15, a support block 17, a cooling fluid supply 26 and optionally a further plug 24.
  • the axle 3, the roller shell 5 and a support block 17 are in figure 1 shown broken.
  • the axle 3 is designed as a tubular hollow body with an annular cross-section, which surrounds an axially extending circular-cylindrical axle cavity 28 .
  • At least one plug 24 dividing the axle cavity 28 is disposed in the axle cavity 28 and defines a cooling cavity 30 in the axle cavity 28 intermediate it and a cooling fluid supply 26, into and out of which a cooling fluid flows through an orifice (not shown) in the Cooling fluid supply 26 can be conducted.
  • the plug 24 is insertable into the axle cavity 28 through a plug rod 25 connected thereto.
  • the roller shell 5 is tubular with a circular cross-section and surrounds an axis section of the axis 3 coaxially. Between the roller shell 5 and the axis 3, the seal brackets 13, the cooling fluid conducting sleeve 11 and the roller bearing 7 are arranged.
  • Each seal holder 13 is arranged between an end region of the roller shell 5 and the axle 3 , surrounds the axle 3 in a ring and is firmly connected to the axle 3 .
  • Each seal holder 13 has a plurality of annular recesses on the axis side, in each of which a first sealing ring 19 is arranged, which bears against the axis 3 and surrounds it in an annular manner.
  • each seal retainer 13 On the roller shell side, each seal retainer 13 has two further annular recesses, in which a dirt seal 21 and a seal 20 are arranged, which rests against the roller shell 5 and relative to which the roller shell 5 is movable.
  • the dirt seal 21 on the roll shell side which is arranged closer to the end of the roll shell 5, serves to seal against dirt from the area surrounding the strand guide roller 1, and the seal 20 serves to seal against the escape of cooling fluid from the strand guide roller 1.
  • each seal holder 13 has a holder 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 roller bearing 7 .
  • the radial opening 34 is connected to a cooling cavity 30 of the axle 3 so that cooling fluid can flow between the cooling cavity 30 and the cooling fluid chamber 31 through the radial opening 34 and the mounting opening 32 .
  • the cooling fluid guide sleeve 11 is arranged axially between the roller bearings 7, is tubular and surrounds the axis 3 coaxially.
  • the cooling fluid guide sleeve 11 has a channel-like cooling channel recess 38 which faces the roller shell 5 and runs helically around the axis 3 .
  • the cooling channel recess 38 forms a coherent cooling channel 40 which runs in a helical manner along the inner surface of the roller shell 5 .
  • the roller shell 5 is rotatably mounted about the axis 3 by the roller bearing 7 .
  • Each roller bearing 7 has an outer ring 7.1 resting on the roller shell 5 and running around the axis 3, an inner ring 7.2 resting on the axis 3 and running around the axis 3, and several rolling bodies 7.3 arranged between the outer ring 7.1 and the inner ring 7.2 on.
  • the outer ring 7.1 (but it would also be possible to have the inner ring 7.2 and/or the rolling elements 7.3) of the roller bearing 7 is made from a corrosion-resistant spring strip, so that the roller bearing (also called spring roller bearing) in 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 bodies 7.3 are made of corrosion-resistant steel in order to be protected against corrosion through contact with the cooling fluid.
  • Each roller bearing 7 has a bearing interior 9 located between the outer ring 7.1 and the inner ring 7.2, which is permeable to the cooling fluid and is open to the cooling channel 40 and the cooling fluid chamber 31 adjoining the roller bearing 7, so that the cooling fluid can flow through the bearing interior 9 between the Cooling fluid chamber 31 and the cooling channel 40 can flow.
  • the cooling cavities 30 and radial openings 34 in the axle 3, the mounting openings 32, the cooling fluid chambers 31, the bearing interiors 9 of the roller bearings 7 and the cooling channel 40 form a coherent receiving space for cooling fluid for cooling the roller shell 5.
  • the cooling fluid is fed through at least one opening in a cooling fluid feed 26 introduced into this receiving space and passed through at least one opening in the other cooling fluid feed 26 out of it.
  • the ring-shaped thrust washers 15 are each arranged as a buffer for absorbing axial forces between a seal holder 13 and the outer ring 7.1 of a roller bearing 7.
  • a locking ring 22 for fixing the position of the roller bearing 7 is arranged on one end of the inner ring 7.2 of each roller bearing 7 that faces the adjacent seal holder 13.
  • the thrust washers 15 for absorbing the axial forces can also be arranged between the roller shell 5 and the inner ring 7.2 or between the cooling fluid conducting sleeve 11 and the inner ring 7.2.
  • the cooling fluid guide sleeve 11 can be connected to the roller shell 5 in a fixed manner, for example with a positive and non-positive fit by being pressed in.
  • the support blocks 17 surround an end region of the axis 3 in a ring shape and serve to support the strand guide roller 1 against a supporting component (not shown). Each support block 17 bears against an end of the adjacent seal mount 13 which protrudes from the roller shell 5.
  • FIG. 1 illustrated embodiment of a strand guide roller 1 can be modified in many ways.
  • the cooling cavities 30 can be formed by bores in the axle 3 which do not extend along the entire axle 3 but only form the cooling cavities 30.
  • the number of sealing rings 19, the seals 20 or the dirt seals 21 can be opposite figure 1 be changed.
  • all or some sealing rings 19 can be omitted and/or several seals 20 with the same function can be arranged on a seal holder 13 .
  • the cooling channel 40 can also be formed by a bore in the roller shell 5 instead of a cooling fluid guide sleeve 11 , and/or instead of just one cooling channel 40 , a plurality of cooling channels 40 can be formed on and/or in the roller shell 5 .
  • the strand guide roller 1 can have a plurality of roller shells 5 arranged one behind the other along the axis 3, with the roller shells 5 being able to be of the same or different design (for example with regard to the formation of the cooling channels 40).
  • figure 2 shows schematically a detail of a continuous casting plant 100 in a plan view. Shown are a mold 102 of the continuous casting plant 100 and several strand guide rollers 1 arranged downstream of the mold 102 and arranged one behind the other.
  • this strand guide roller 1 has, for example, an annular cavity 41, which is located outside of the seal 20 in the radial direction, so that the temperature-sensitive seal 20 is sufficiently cooled even when the strand guide roller 1 is at a standstill. Since the dirt seal 21 is made of felt, for example, it is generally not necessary to cool it as well. The penetration 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 sealing of the ring cavity 41 is performed by the seal 20, which is designed as a shaft sealing ring.
  • the roller bearing 7 itself as in figure 1 designed as a spring roller bearing.
  • a thrust ring 15 made of the high-performance plastic PEEK is arranged between the roller bearing 7 and the cooling fluid-conducting sleeve 11 .
  • the thrust ring 15 compensates for relative movements, for example due to different thermal expansions, and axial forces in the strand guide roller 1 without jamming occurring.
  • it is also particularly favorable that the cooling fluid is introduced into the annular cavity 41 through 6 radial openings 34 , resulting in a very even flow (and thus an even temperature distribution) in the roller bearing 7 . This measure also contributes to the robustness of the strand guide roller 1.
  • a cooling fluid is introduced into the axis cavity 28 from a coolant supply not shown here, the cooling fluid is then diverted into six radial openings 34 and introduced into the annular cavity 41 via the mounting opening 32.
  • the seal 20 in particular a sealing lip which bears against the roller shell 5 , is cooled via the web between the annular cavity 41 and the seal 20 .
  • the web can either be made in one piece with the roller shell or be connected to the roller shell 5 by welding, for example. The flow then flows through the roller bearing 7 and the cooling fluid is introduced into the cooling channel 40 .
  • the cooling fluid After flowing through the cooling channel 40 in a spiral shape, the cooling fluid flows through another roller bearing on the right-hand side of the strand-guiding roller and is introduced into another annular cavity. Thereafter, the cooling fluid is again introduced through further radial openings into a further axle cavity and then drained off.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)

Claims (12)

  1. Rouleau de guidage de barre (1) pour le guidage d'une barre métallique dans une installation de coulée continue (100), comportant
    - un axe fixe (3),
    - au moins une gaine de rouleau (5) entourant de manière coaxiale un tronçon d'axe de l'axe (3),
    - pour chaque gaine de rouleau (5) au moins un conduit de refroidissement (40) s'étendant le long de la surface intérieure de la gaine de rouleau (5) pour réceptionner un fluide de refroidissement et pour refroidir la gaine de rouleau (5),
    - et pour chaque gaine de rouleau (5) au moins un palier à roulement (7) disposé entre le tronçon d'axe entouré par la gaine de rouleau (5) et la gaine de rouleau (5) pour le montage à rotation de la gaine de rouleau (5) autour de l'axe (3),
    - le palier à roulement (7) jouxtant un conduit de refroidissement (40) et présentant un espace intérieur de palier (9) perméable au fluide de refroidissement et ouvert vers le conduit de refroidissement (40), de sorte que le palier à roulement (7) est parcouru en service par le fluide de refroidissement,
    - le palier à roulement (7) présentant un anneau extérieur (7.1) se serrant contre la gaine de rouleau (5) et s'étendant autour de l'axe (3), un anneau intérieur (7.2) se serrant contre l'axe (3) et s'étendant autour de l'axe (3) ainsi que plusieurs éléments roulants (7.3) disposés entre l'anneau extérieur (7.1) et l'anneau intérieur (7.2), caractérisé en ce que
    le palier à roulement (7) est réalisé en un acier inoxydable et adapté à un service sans lubrifiant,
    en ce qu'au moins un élément du groupe comprenant l'anneau extérieur (7.1), l'anneau intérieur (7.2) et les éléments roulants (7.3) d'au moins un palier à roulement (7) est réalisé sous forme élastiquement déformable dans au moins une direction orthogonale à un axe longitudinal de l'axe (3), et
    en ce qu'au moins un conduit de refroidissement (40) s'étend selon une forme hélicoïdale autour de l'axe (3) le long d'une surface intérieure d'une gaine de rouleau (5).
  2. Rouleau de guidage de barre (1) selon la revendication 1, caractérisé en ce que le conduit de refroidissement (40) est rendu étanche sur une face frontale du rouleau de guidage de barre (1) par un support de joint (13) avec un joint (20) entre la gaine de rouleau (5) et le support de joint (13).
  3. Rouleau de guidage de barre (1) selon la revendication 2, caractérisé en ce que la gaine de rouleau (5) présente en direction radiale à l'extérieur du joint (20) une cavité annulaire (41) reliée au conduit de refroidissement (40), de manière que le joint (20) est refroidi par le fluide de refroidissement même en cas d'arrêt du rouleau de guidage de barre (1).
  4. Rouleau de guidage de barre (1) selon l'une des revendications précédentes, caractérisé par au moins une douille de guidage (11) du fluide de refroidissement de type tubulaire disposée entre l'axe (3) et une gaine de rouleau (5) qui comporte au moins un évidement du conduit de refroidissement (38) de type gouttière orienté vers la gaine de rouleau (5) pour constituer un conduit de refroidissement (40).
  5. Rouleau de guidage de barre (1) selon l'une des revendications précédentes, caractérisé en ce qu'une rondelle de butée (15) est prévue soit entre le support de joint (13) et le palier à roulement (5) soit entre le palier à roulement (5) et la douille de guidage (11) du fluide de refroidissement pour compenser les mouvements relatifs axiaux.
  6. Rouleau de guidage de barre (1) selon la revendication 5, caractérisé en ce que la rondelle de butée est réalisée en polyétheréthercétone (PEEK).
  7. Rouleau de guidage de barre (1) selon l'une des revendications précédentes, caractérisé en ce que l'axe (3) présente au moins une cavité de refroidissement (30) remplissable avec du fluide de refroidissement, qui est reliée à au moins un espace intérieur de palier (9) d'un palier à roulement (7) et à au moins un conduit de refroidissement (40), de sorte que la cavité de refroidissement (30), l'espace intérieur de palier (9) et le conduit de refroidissement (40) constituent un espace de réception de fluide de refroidissement cohérent.
  8. Rouleau de guidage de barre (1) selon la revendication 7, caractérisé en ce que l'ensemble des conduits de refroidissement (40), des espaces intérieurs de palier (9), des paliers à roulement (7) et des cavités de refroidissement (30) sont reliés les uns aux autres pour constituer un espace de réception de fluide de refroidissement cohérent.
  9. Procédé de refroidissement d'un rouleau de guidage de barre (1), notamment selon l'une des revendications précédentes, à l'aide d'un fluide de refroidissement,
    - dans lequel le rouleau de guidage de barre (1) présente un axe fixe (3) avec une cavité d'axe (28) axiale et une gaine de rouleau (5),
    - dans lequel la gaine de rouleau (5) est montée à rotation par rapport à l'axe (3) grâce à au moins un palier à roulement (7) et un conduit de refroidissement (40) existe entre la gaine de rouleau (5) et l'axe (3), le conduit de refroidissement (40) étant rendu étanche du côté frontal par un support de joint (13) avec un joint (20),
    - dans lequel le palier à roulement (7) présente un anneau extérieur (7.1) se serrant contre la gaine de rouleau (5) et s'étendant autour de l'axe (3), un anneau intérieur (7.2) se serrant contre l'axe (3) et s'étendant autour de l'axe (3) ainsi que plusieurs éléments roulants (7.3) disposés entre l'anneau extérieur (7.1) et l'anneau intérieur (7.2), et
    - dans lequel au moins un élément du groupe comprenant l'anneau extérieur (7.1), l'anneau intérieur (7.2) et les éléments roulants (7.3) d'au moins un palier à roulement (7) est conçu sous forme élastiquement déformable dans au moins une direction orthogonale à un axe longitudinal de l'axe (3), comportant les étapes suivantes :
    - alimentation en fluide de refroidissement de la cavité d'axe axiale (28) depuis une unité d'alimentation de fluide de refroidissement (26) ;
    - déviation du fluide de refroidissement vers au moins une ouverture radiale (34) sensiblement radiale du rouleau de guidage de barre (1) ;
    - alimentation en fluide de refroidissement d'une cavité annulaire (41) ayant pour effet le refroidissement du joint (20) par le fluide de refroidissement dans la cavité annulaire (41) ;
    - traversée du palier à roulement (7) ;
    - alimentation en fluide de refroidissement du conduit de refroidissement (40) ;
    - traversée du conduit de refroidissement (40) ayant pour effet le refroidissement de la gaine de rouleau (5), l'agent de refroidissement traversant le conduit de refroidissement (40) selon une forme hélicoïdale autour de l'axe (3) le long d'une surface intérieure d'une gaine de rouleau (5).
  10. Procédé selon la revendication 9, caractérisé en ce que l'agent de refroidissement est dévié grâce à plusieurs, de préférence au moins quatre, ouvertures radiales (34).
  11. Procédé selon la revendication 9 ou 10, caractérisé en ce que l'agent de refroidissement traverse le conduit de refroidissement (40) en direction axiale et tangentielle le long d'une douille de guidage (11) du fluide de refroidissement.
  12. Procédé selon l'une des revendications 9 à 11, caractérisé par
    - la traversée d'un deuxième palier à roulement ;
    - l'alimentation en fluide de refroidissement d'une deuxième cavité annulaire (41) ayant pour effet le refroidissement d'un deuxième joint par le fluide de refroidissement dans la deuxième cavité annulaire ;
    - la déviation du fluide de refroidissement vers au moins une ouverture radiale sensiblement radiale supplémentaire du rouleau de guidage de barre (1) ; et
    - l'évacuation du fluide de refroidissement depuis une cavité d'axe axiale vers un dispositif d'évacuation du fluide de refroidissement.
EP17700969.3A 2016-01-21 2017-01-20 Rouleau de guidage de produit filé pour le guidage d'un produit filé métallique dans une installation de coulée continue Active EP3405302B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT500272016 2016-01-21
PCT/EP2017/051146 WO2017125529A1 (fr) 2016-01-21 2017-01-20 Rouleau de guidage de produit filé pour le guidage d'un produit filé métallique dans une installation de coulée continue

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EP3405302B1 true EP3405302B1 (fr) 2023-08-30
EP3405302C0 EP3405302C0 (fr) 2023-08-30

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WO (1) WO2017125529A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3562286A1 (fr) * 2018-04-25 2019-10-30 Siemens Aktiengesellschaft Fond de panier et son procédé de fabrication
AT526034A1 (de) * 2022-08-09 2023-08-15 Primetals Technologies Austria GmbH Strangführungsrolle zum Führen eines metallischen Strangs in einer Stranggießanlage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2545891B1 (fr) * 1982-10-21 1990-11-16 Kastner Rene Roulement a rouleaux apte a fonctionner a haute temperature et sans graissage, et rouleaux de machine de coulee continue equipes de tels roulements
AT514625B1 (de) * 2013-07-24 2018-07-15 Primetals Technologies Austria GmbH Gekühlte Strangführungsrolle

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WO2017125529A1 (fr) 2017-07-27
EP3405302C0 (fr) 2023-08-30

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