EP0499562A1 - Mantel für Stranggiessrolle - Google Patents

Mantel für Stranggiessrolle Download PDF

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Publication number
EP0499562A1
EP0499562A1 EP92470004A EP92470004A EP0499562A1 EP 0499562 A1 EP0499562 A1 EP 0499562A1 EP 92470004 A EP92470004 A EP 92470004A EP 92470004 A EP92470004 A EP 92470004A EP 0499562 A1 EP0499562 A1 EP 0499562A1
Authority
EP
European Patent Office
Prior art keywords
rod
bores
bore
ferrule
ferrule according
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.)
Granted
Application number
EP92470004A
Other languages
English (en)
French (fr)
Other versions
EP0499562B1 (de
Inventor
Jacques Barbe
Gérard Raisson
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.)
Thyssen Stahl AG
USINOR SA
Original Assignee
Thyssen Edelstahlwerke AG
Thyssen Stahl AG
USINOR Sacilor SA
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 Thyssen Edelstahlwerke AG, Thyssen Stahl AG, USINOR Sacilor SA filed Critical Thyssen Edelstahlwerke AG
Publication of EP0499562A1 publication Critical patent/EP0499562A1/de
Application granted granted Critical
Publication of EP0499562B1 publication Critical patent/EP0499562B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel

Definitions

  • the present invention is in the field of continuous casting of metals on one or between two cylinders driven in rotation and the wall of which is vigorously cooled by internal circulation of a cooling fluid. It relates more particularly to the shell of such a cylinder which constitutes said wall.
  • Such cylinders consist of a core ensuring the mechanical resistance of the cylinder and its rotation drive, and of a ferrule surrounding this core, made of a material of high thermal conductivity, in contact with which the cast metal is brought to solidify during the casting operation.
  • a cooling fluid circulates under pressure in channels drilled in the thickness thereof, parallel to the axis of the cylinder. These channels are connected at their ends to supply and return conduits formed for example in the heart of the cylinder.
  • the section of the cooling channels and their distribution in the shell are determined so as to ensure a sufficient flow rate to guarantee the desired heat extraction and the greatest possible homogeneity of the cooling over the entire periphery of the cylinder.
  • These channels are therefore generally in large number and of relatively small diameter (for example 15 mm). It follows that the realization of these channels is very delicate, especially since their length can be important if the shell is wide. An increase in the diameter of these channels could facilitate the drilling of these channels but leads to a strong increase in the flow of coolant to maintain conditions of circulation of said equivalent fluid, without correspondingly increasing the fluid-shell heat exchanges, these essentially depending on the exchange surface, which is proportional to the diameter of the channels whereas, at constant circulation speed, the flow is substantially proportional to the square of this diameter.
  • the object of the present invention is to solve these problems and in particular to allow easier production of the cooling channels. It also aims to increase the overall cooling efficiency, by improving the heat exchange conditions between the shell and the cooling fluid.
  • the invention relates to a cylindrical shell of a casting cylinder for a continuous casting installation on one or between two such cylinders, having bores forming cooling channels drilled parallel to the axis of said ferrule in the thickness of the latter, characterized in that it comprises inside said bores rods extending over substantially the entire length of said bores, of constant section and less than that of said bores.
  • the ferrule comprises, for each cooling channel, between the surface of the bore and said rod, spacers for holding said rod in a position remote from the surface of the bore which is the closer to the outer surface of the ferrule.
  • said rods are off-center with respect to said bores towards the axis of the ferrule.
  • This arrangement favors the passage of the coolant in the zone of the bore which is closest to the surface of the shell, and which is the zone essentially receiving the heat flux coming from the cast product and transmitted by conduction in the shell. .
  • the ends of the bores are closed by plugs connected to the ends of the rods and comprising elastic sealing means for sealing the ends of the bores.
  • Such known means consist, for example, of welding or screwing metal plugs at the ends of the bores.
  • stresses due to welding appear in the shell and may cause cracking.
  • any subsequent repair operations require machining of the welded areas in order to access the cooling channels.
  • screw caps the ends of the bores must be tapped, and moreover cracks may also appear at the bottom of the thread in the shell.
  • the sealing means according to this latter arrangement of the invention eliminate these problems and disadvantages by reducing machining to a single bore, and eliminating any crack initiation.
  • the casting cylinder according to the prior art represented in FIG. 1 comprises a ferrule 1 made of material of high thermal conductivity surrounding a core 2 composed of a support piece 3 and two flanges 4 which rigidly hold the ferrule by tightening by means tie rods 5.
  • Cooling channels 6 are drilled in the shell parallel to the cylinder axis and closed at each end by plugs 7. These channels 6 are connected to supply and return ducts 8 for the fluid cooling.
  • the cooling channels have for example a diameter of 15 mm, and the plugs 7 are welded to the ferrule.
  • the drawing of Figure 2 shows, on an enlarged scale, the detail, corresponding to the area A of Figure 1, of the ferrule according to the present invention.
  • the cooling channel 6 is formed by a bore 11 made in the shell, for example 20 mm in diameter, in which is placed a rod 12 of smaller diameter, for example 13 mm, extending over the entire length of the bore.
  • the rod 12 is offset from the bore towards the axis of the cylinder and maintained in contact with the wall zone 13 of the bore located towards said axis by means of spacers 14 interposed between the rod and the bore on the side diametrically opposite to the contact zone 13.
  • the space thus formed between the wall of the bore and the rod constitutes the channel in which the cooling fluid circulates.
  • spacers 14 are thus distributed over the length of the bore to guarantee constant positioning of the rod therein.
  • the spacers are thin, and have a section of elongated shape in the direction of the flow and thinned towards the ends 14 ′, as shown in FIG. 4.
  • the shape and the arrangement of the spacers 14 can be different.
  • the spacer 14 located in a radial plane of the cylinder can be replaced for example by two spacers of similar shape, located symmetrically on either side of this plane.
  • the cross section of the rod 12 can also be modified.
  • this rod 12a can be cylindrical with a diameter substantially equal to that of the bore 11, and include a flat 12b, or any other machining carried out so that when this rod is placed in the bore, a channel 6a remains between the rod and the bore, delimited by this flat or machining and the surface of the bore.
  • the rod is then preferably positioned angularly in the bore so that this flat or machining is directed towards the outer surface of the ferrule.
  • the rod 12 Towards its end, and at the level of the outlet in the bore 11 of the conduits 8, 9 for supplying or returning the cooling fluid, the rod 12 comprises a part 15 offset from its median part but centered with respect to the bore, so as not to disturb the flow of the fluid.
  • a plug 16 is inserted in the bore and connected only to the end 18 of the rod 12.
  • the plug 16 has an annular seal 17 made of elastic material inserted between the end 18 of the rod 12 and the bore 11.
  • the seal 17 is in axial abutment against a flange 19 of the rod.
  • the plug has axial retaining means comprising a cap 21, provided with anchoring elements constituted by deformable tongues 22 notched, the notches 23 of which are anchored on frustoconical shoulders 24 provided for this purpose on the end 18 of the stem.
  • the set of tongues 22 has a frustoconical external shape and is inserted between the end 18 of the rod and the seal 17 which, due to its elasticity, exerts radial pressure on the tongues 22, thus ensuring the anchoring of the notches 23 of the cap on the frustoconical shoulders 24.
  • the seal being thus compressed between the abutment flange 19, the cap 21 and its tongues 22, and the wall of the bore 11, seals the ends of the cooling channels.
  • the seal has at its periphery an annular groove 20 which constitutes a free volume capable of absorbing any variations in volume or deformation of the seal, and thus preventing the latter from creeping between the bore and the cap 21.
  • the cap also includes two diametrically opposite ears 25 which engage in clearances 26 of corresponding shapes made in the shell, and immobilizing the cap in rotation relative to the shell. Due to the assembly of the cap, clamped on the end 18 of the rod by the seal 17, the rod 12 is itself immobilized in rotation.
  • the ears 25 constitute a stop opposing any significant axial displacement of the rod and the plug relative to the ferrule, a slight clearance, in the axial direction, being however made between these ears and the clearances 26 to take account possible differences in expansion between the rod and the ferrule.
  • the implementation of the plug according to the invention does not require any machining of the shell other than drilling the bore, which therefore has a wall of constant diameter over its entire length, thus providing a smooth surface. unlikely to constitute crack initiators.
  • the plugs have no direct rigid mechanical connection with the ferrule, and are maintained, in the axial direction, by the mere fact of their anchoring on the ends of the rods. It is therefore only the rod which maintains the plugs. Furthermore, conversely, the axial position of the rod is maintained only by the plugs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Continuous Casting (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Paper (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP92470004A 1991-02-13 1992-02-04 Mantel für Stranggiessrolle Expired - Lifetime EP0499562B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101865 1991-02-13
FR9101865A FR2672523B1 (fr) 1991-02-13 1991-02-13 Virole de cylindre de coulee continue.

Publications (2)

Publication Number Publication Date
EP0499562A1 true EP0499562A1 (de) 1992-08-19
EP0499562B1 EP0499562B1 (de) 1998-05-27

Family

ID=9409791

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92470004A Expired - Lifetime EP0499562B1 (de) 1991-02-13 1992-02-04 Mantel für Stranggiessrolle

Country Status (7)

Country Link
EP (1) EP0499562B1 (de)
AT (1) ATE166603T1 (de)
DE (2) DE69225626T2 (de)
DK (1) DK0499562T3 (de)
ES (1) ES2118122T3 (de)
FI (1) FI97607C (de)
FR (1) FR2672523B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680796A1 (de) * 1994-05-02 1995-11-08 Siemens Aktiengesellschaft Walze für eine Anlage zum kontinuierlichen Giessen
EP0792706A1 (de) * 1996-02-29 1997-09-03 USINOR SACILOR Société Anonyme Gusswalz zum Strangguss von Metall, zwischen oder auf den Giesswalzen
EP0913218A1 (de) * 1997-10-31 1999-05-06 Usinor Verfahren und Giessanlage zur Erzeugung von Dünnbändern auf einer oder zwischen zwei Rollen
WO2002026425A1 (de) * 2000-09-27 2002-04-04 Sms Demag Aktiengesellschaft Giessrolle zum bilden eines giessstrangs, insbesondere für eine zwei-rollen-giessmaschine
WO2007056801A1 (en) 2005-11-16 2007-05-24 Ihi Corporation Twin roll caster, and equipment and method for operating the same
US7594535B2 (en) 2005-07-25 2009-09-29 Castrip, Llc Twin roll caster, and equipment and method for operating the same
EP2127779A1 (de) * 2007-02-26 2009-12-02 IHI Corporation Giesswalze

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408199B (de) 1999-09-06 2001-09-25 Voest Alpine Ind Anlagen Giesswalze

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1382608A (en) * 1920-02-18 1921-06-21 Pennsylvania Wire Glass Compan Machinery for rolling glass
US1813142A (en) * 1927-06-30 1931-07-07 Saint Gobain Glass forming roll
US2015747A (en) * 1932-07-11 1935-10-01 Libbey Owens Ford Glass Co Roll construction
FR1468066A (fr) * 1965-05-13 1967-02-03 Rouleau pour machines à fabriquer le verre en feuilles
FR2211296A1 (de) * 1972-12-20 1974-07-19 Procter & Gamble
DE3012736B1 (de) * 1980-03-28 1981-06-04 Mannesmann AG, 4000 Düsseldorf Stranggiessrolle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1382608A (en) * 1920-02-18 1921-06-21 Pennsylvania Wire Glass Compan Machinery for rolling glass
US1813142A (en) * 1927-06-30 1931-07-07 Saint Gobain Glass forming roll
US2015747A (en) * 1932-07-11 1935-10-01 Libbey Owens Ford Glass Co Roll construction
FR1468066A (fr) * 1965-05-13 1967-02-03 Rouleau pour machines à fabriquer le verre en feuilles
FR2211296A1 (de) * 1972-12-20 1974-07-19 Procter & Gamble
DE3012736B1 (de) * 1980-03-28 1981-06-04 Mannesmann AG, 4000 Düsseldorf Stranggiessrolle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680796A1 (de) * 1994-05-02 1995-11-08 Siemens Aktiengesellschaft Walze für eine Anlage zum kontinuierlichen Giessen
CN1064570C (zh) * 1996-02-29 2001-04-18 尤辛诺公司 在单辊上或双辊间实施连续铸造之设备的铸辊
FR2745510A1 (fr) * 1996-02-29 1997-09-05 Usinor Sacilor Cylindre de coulee d'une installation de coulee continue sur un ou entre deux cylindres
US5839501A (en) * 1996-02-29 1998-11-24 Unicor-Sacilor Casting roll for a plant for continuous casting onto one or between two rolls
EP0792706A1 (de) * 1996-02-29 1997-09-03 USINOR SACILOR Société Anonyme Gusswalz zum Strangguss von Metall, zwischen oder auf den Giesswalzen
EP0913218A1 (de) * 1997-10-31 1999-05-06 Usinor Verfahren und Giessanlage zur Erzeugung von Dünnbändern auf einer oder zwischen zwei Rollen
FR2770427A1 (fr) * 1997-10-31 1999-05-07 Usinor Procede et installation de coulee de bandes minces metalliques sur un ou entre deux cylindres
WO2002026425A1 (de) * 2000-09-27 2002-04-04 Sms Demag Aktiengesellschaft Giessrolle zum bilden eines giessstrangs, insbesondere für eine zwei-rollen-giessmaschine
US7594535B2 (en) 2005-07-25 2009-09-29 Castrip, Llc Twin roll caster, and equipment and method for operating the same
WO2007056801A1 (en) 2005-11-16 2007-05-24 Ihi Corporation Twin roll caster, and equipment and method for operating the same
EP1948375A1 (de) * 2005-11-16 2008-07-30 Castrip, LLC Zweirollengiessanlage und einrichtung und verfahren zu deren betätigung
EP1948375A4 (de) * 2005-11-16 2010-02-24 Castrip Llc Zweirollengiessanlage und einrichtung und verfahren zu deren betätigung
EP2127779A1 (de) * 2007-02-26 2009-12-02 IHI Corporation Giesswalze
EP2127779A4 (de) * 2007-02-26 2012-01-04 Ihi Corp Giesswalze

Also Published As

Publication number Publication date
ATE166603T1 (de) 1998-06-15
DE69225626T2 (de) 1999-01-28
DK0499562T3 (da) 1999-03-22
ES2118122T3 (es) 1998-09-16
FR2672523B1 (fr) 1995-04-21
DE69225626D1 (de) 1998-07-02
FI97607C (fi) 1997-01-27
EP0499562B1 (de) 1998-05-27
FI920607A (fi) 1992-08-14
DE4203964A1 (de) 1992-08-20
FI97607B (fi) 1996-10-15
FI920607A0 (fi) 1992-02-13
FR2672523A1 (fr) 1992-08-14

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