EP3917701A1 - Rouleau d'un guidage de barre permettant de guider une barre métallique coulée - Google Patents

Rouleau d'un guidage de barre permettant de guider une barre métallique coulée

Info

Publication number
EP3917701A1
EP3917701A1 EP19829541.2A EP19829541A EP3917701A1 EP 3917701 A1 EP3917701 A1 EP 3917701A1 EP 19829541 A EP19829541 A EP 19829541A EP 3917701 A1 EP3917701 A1 EP 3917701A1
Authority
EP
European Patent Office
Prior art keywords
roller
partial
strand
strand guide
bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19829541.2A
Other languages
German (de)
English (en)
Inventor
Stephan Six
Axel Stavenow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Group GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SMS Group GmbH filed Critical SMS Group GmbH
Publication of EP3917701A1 publication Critical patent/EP3917701A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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 of a strand guide for guiding a cast metallic strand, which has at least a first and a second axially aligned partial roller arranged side by side, wherein a bearing for storing the two partial rollers is arranged between the two partial rollers and wherein the partial rollers are made of a first material consist.
  • a generic strand guide roller is known from DE 10 2014 223 010 A1.
  • One axial end of the one partial roller is designed as a bearing journal which passes through the bearing and extends into a bore in the other partial roller.
  • the disadvantage of this solution is that the partial roller and the bearing journal are made of the same material, but must perform different functions. While the jacket of the partial roller must be suitable for welding material, other requirements apply to the bearing properties of the journal; namely, they must have a particularly high strength in order to be able to transmit the bearing forces. In addition, the material loss in the area of the tenon is relatively high.
  • EP 2 032 289 B1 discloses a strand guide roller of basically the same structure.
  • the journal which passes axially through the bearing, is formed from the material of the one partial roller by machining.
  • Such a solution is also shown in DE 100 24 513 A1.
  • EP 1 937 430 B1 shows a solution in which bearing pins are shrunk into bores in the two axial ends of the respective partial rollers. This has the advantage that the journals can be made from a different material than the one from which the partial rollers are made. The disadvantage here however, that in order to change the bearing during dismantling, the bearing pins must be sawed through.
  • each partial roller has a bearing journal in the axially end region which extends into the bearing between the two partial rollers.
  • the invention is therefore based on the object of developing a generic strand guide roller in such a way that the problems mentioned can be overcome. A simple assembly and disassembly of the arrangement should therefore be possible. Furthermore, it should be possible to use the optimal materials for the partial rollers and the bearing journals, whereby an economical production method is sought.
  • a roller pin is fastened, which consists of a second material that is different from the first material, the roller pin penetrating the bearing and with it from the first partial roller distal axial end extends into a bore of the second partial roller in order to support it.
  • the roller pin fastened in the first partial roller is preferably arranged by shrinking in a bore of the first partial roller.
  • the partial rolls are preferably made of a material that is suitable for cladding.
  • the roller pin is preferably made of a high-strength material.
  • the bearing is preferably an undivided single bearing.
  • the second partial roller is preferably mounted on a sleeve pushed onto the roller journal.
  • the outer diameter of the roller journal is preferably between 40% and 65% of the outer diameter of the partial rollers.
  • the partial rollers are preferably provided with internal channels in order to cool them by means of a passage of fluid through the channels. It can be provided that the inner channels run helically at least in sections (so-called sleeve cooling). Furthermore, it is preferably provided that a bore section in the roller journal is part of the channels, the bore section preferably being designed as a central bore in the roller journal.
  • the roll length is unlimited; the roll diameter can be of any size from 100 mm upwards.
  • the combination of different materials, one for the (separately manufactured) roller journal and one for the (separately manufactured) partial rollers enables the build-up weldability of the roller bodies to be optimized without endangering the strength of the roller journal.
  • the use of different materials and primary materials can also advantageously reduce material loss during production.
  • the center cooling (flow through the cooling medium through a central bore) is usually only relatively weak, which results in undesirably high roller wear due to a high surface temperature.
  • the influence of cooling on the cast material is therefore only relatively slight.
  • the preferably proposed sleeve cooling advantageously closes the gap between these two types of cooling.
  • the balanced inner sleeve cooling is preferred.
  • the cooling channel runs helically or helically at the same distance from the roller surface inside the roller.
  • the proposed construction with the shrinking of the roller pin creates a possibility of integrating this type of cooling into the roller in a simple manner.
  • the cooling of the roll can now be optimally adapted to the requirements of the system. Due to the proposed structure of the strand guide roller, it is no longer necessary to have to compromise between the suitability for cladding and the tenon strength. So far, the entire roller body has mostly been made from the high-strength material required for the journal. However, this is only poorly suited for cladding.
  • Another advantage is the now possible non-destructive disassembly of the roller assembly. In particular, it is not necessary to announce roller journals when dismantling.
  • a single bearing is preferably provided as the central bearing.
  • a very large storage window is created due to the space, which has a negative impact on the slab quality.
  • a curved tooth coupling must be used for driven rollers in order to be able to transmit the torque.
  • the proposed concept allows economical use of the expensive roller pin material. In particular, waste is minimized by machining.
  • roller pin shrunk into the partial roller achieves an arrangement which has the same functional properties of previously known roller bodies which are produced from a block of material. However, after the roller pin has shrunk on only one side, the advantages of assembly and disassembly are obtained.
  • an embodiment of the invention is shown. Show it:
  • FIG. 1 in radial section a strand guide roller of a strand guide and Fig. 2 shows the central area of Figure 1 in an enlarged view.
  • a strand guide roller 1 which consists of two partial rollers 2 and 3.
  • a bearing 4 is arranged, which in the exemplary embodiment is designed as an undivided single bearing.
  • a bore 9 is made in the axial end 5 of the first partial roller 2.
  • a roller pin 6 is fastened in this bore, by shrinking. There is thus a firm bond between partial roller 2 and roller journal 6.
  • the two partial rolls 2 and 3 consist of a first material which is well suited for cladding.
  • the roller pin 6 consists of a high-strength material, which is optimized for the transfer of bearing forces.
  • the roller pin 6 passes through the bearing 4 axially in the direction of the partial roller 3.
  • a bore 8 is made in this, into which the roller pin 6 dips with its axial end 7.
  • the partial roller 3 is supported by a sleeve 10 which is pushed onto the end section of the roller journal 6. Accordingly, the assembly consisting of partial roller 2 and roller pin 6 can be pushed axially through the bearing 4 during assembly until the axial end 7 of the roller pin 6 dips into the bore 8 of the partial roller 3. Disassembly is carried out in the reverse order. It is therefore not necessary to saw through the roller journal 6 when dismantling the arrangement.
  • the outer diameter d of the roller pin 6 is mostly in the range of approximately 50% of the outer diameter D of the partial roller 2, 3.
  • Channels 11 are introduced into the arrangement for cooling the strand guide roller 1. This is a sleeve cooling, in which the channels 11 extend in sections in a helical manner around the longitudinal axis of the partial rollers 2, 3. A bore section 1 T in the roller journal 6 is part of the channel system, via which cooling fluid is passed in order to cool the arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un rouleau (1) d'un guidage de barre permettant de guider une barre métallique coulée, qui comprend au moins un premier et un deuxième rouleau partiel (2, 3) alignés de manière axiale et disposés côte à côte. Un palier (4) est disposé entre les deux rouleaux partiels (2, 3) pour supporter les deux rouleaux partiels (2, 3) et les rouleaux partiels (2, 3) sont constitués d'un premier matériau. Afin de permettre un montage et un démontage faciles de l'ensemble et d'utiliser les meilleurs matériaux pour les rouleaux partiels et les tourillons, selon l'invention, à l'extrémité axiale (5) du premier rouleau partiel (2) est fixé un axe de rouleau, qui est constitué d'un deuxième matériau, différent du premier. L'axe de rouleau passe à travers le palier (4) et, avec son extrémité axiale (7) éloignée du premier rouleau partiel (2), se prolonge dans un alésage (8) du second rouleau partiel (3) pour soutenir ce dernier.
EP19829541.2A 2019-02-01 2019-12-19 Rouleau d'un guidage de barre permettant de guider une barre métallique coulée Withdrawn EP3917701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019201319.8A DE102019201319A1 (de) 2019-02-01 2019-02-01 Strangführungsrolle einer Strangführung zum Führen eines gegossenen metallischen Strangs
PCT/EP2019/086163 WO2020156742A1 (fr) 2019-02-01 2019-12-19 Rouleau d'un guidage de barre permettant de guider une barre métallique coulée

Publications (1)

Publication Number Publication Date
EP3917701A1 true EP3917701A1 (fr) 2021-12-08

Family

ID=69063770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19829541.2A Withdrawn EP3917701A1 (fr) 2019-02-01 2019-12-19 Rouleau d'un guidage de barre permettant de guider une barre métallique coulée

Country Status (3)

Country Link
EP (1) EP3917701A1 (fr)
DE (1) DE102019201319A1 (fr)
WO (1) WO2020156742A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407721B (de) 1999-06-02 2001-05-25 Voest Alpine Ind Anlagen Strangführungsrolle
AT412851B (de) * 2003-07-18 2005-08-25 Voest Alpine Ind Anlagen Innengekühlte strangführungsrolle
AT502694B1 (de) 2005-10-20 2007-10-15 Voest Alpine Industrienanlagen Strangführungsrolle
AT502695A1 (de) * 2005-10-20 2007-05-15 Voest Alpine Ind Anlagen Verfahren zur herstellung einer strangführungsrolle, eine nach dem verfahren hergestellte strangführungsrolle und deren verwendung
DE102006040011A1 (de) 2006-04-21 2007-10-25 Sms Demag Ag Strangführungsrolle
DE102011084231A1 (de) 2011-10-10 2013-04-11 Sms Siemag Ag Rollenlinie für eine Stranggießanlage sowie Verfahren zum Betrieb einer Rollenlinie
DE102014223010A1 (de) 2014-08-07 2016-02-11 Sms Group Gmbh Strangführungsrolle

Also Published As

Publication number Publication date
WO2020156742A1 (fr) 2020-08-06
DE102019201319A1 (de) 2020-08-06

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