EP0294407B1 - Verfahren und vorrichtung zum kühlen von walzen - Google Patents

Verfahren und vorrichtung zum kühlen von walzen Download PDF

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Publication number
EP0294407B1
EP0294407B1 EP87907924A EP87907924A EP0294407B1 EP 0294407 B1 EP0294407 B1 EP 0294407B1 EP 87907924 A EP87907924 A EP 87907924A EP 87907924 A EP87907924 A EP 87907924A EP 0294407 B1 EP0294407 B1 EP 0294407B1
Authority
EP
European Patent Office
Prior art keywords
channel
coolant
channels
roll
cooling
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.)
Expired - Lifetime
Application number
EP87907924A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0294407A1 (de
Inventor
Wilhelm Friedrich Lauener
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.)
LAUENER ENGINEERING AG
Original Assignee
Lauener Engineering AG
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 Lauener Engineering AG filed Critical Lauener Engineering AG
Priority to AT87907924T priority Critical patent/ATE61530T1/de
Publication of EP0294407A1 publication Critical patent/EP0294407A1/de
Application granted granted Critical
Publication of EP0294407B1 publication Critical patent/EP0294407B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers
    • 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 invention relates to a method and a device for cooling rolls, in particular in the continuous casting of aluminum and other metal strips, wherein a coolant is guided between a roll shell and a roll core through cooling channels arranged alternately in the axial direction in the counterflow principle.
  • the casting mold When metal is continuously poured between two rolls, the casting mold is essentially formed by the gap between the rolls and by end walls on the side.
  • the action time of the rollers is relatively short, and a large amount of heat must be dissipated over a short distance.
  • the rollers are cooled, which is done by injection molding them from the outside or by internal cooling. For operational reasons, the internal cooling of the rollers is preferred.
  • cooling channels are usually arranged between a roll core and a roll shell, through which a coolant flows.
  • This coolant usually cooling water, extracts heat from the roll shell.
  • great attention must be paid to the arrangement of the cooling ducts, since they are not only responsible for the amount of heat that is extracted from the material to be cooled, but can also determine the shape and dimensions of the roller itself during operation. If a roller is cooled differently along its length or circumference, stresses arise as a result of different thermal expansion. Among other things, this leads to a different deflection of the roll, which has a negative effect on the quality of the rolling stock. In particular, however, the uniform cooling of the casting material lengthways and crossways must be given the greatest attention.
  • CH-PS 429 042 shows casting rolls in which the cooling channels run helically between the roll core and casing, with their inlets in alternating order on one or the other end of the roll.
  • the feed and drain channels open into the same end face of the roll core.
  • a roll is also known in which the cooling channels are guided in the axial direction, the feed and drain channels opening into the same end face of the roll core.
  • the coolant introduced on one end of the roller is deflected at the other and used again for cooling in the opposite direction.
  • This has the disadvantage that the cooling is not uniform over the entire circumference of the roller, because the coolant guided in the opposite direction already has a higher temperature due to greater heating.
  • Cooling channels arranged in the axial direction with cooling media alternately guided in the countercurrent principle are known from US-A-2936158.
  • the cooling medium is guided in a serpentine manner through at least three cooling channels, that is to say it is deflected at least twice on one end of the roll. 4, six cooling channels are fed from the same radial inflow line, the cooling medium is divided and flows through three cooling channels to one outflow line, the heated cooling medium flowing out through adjacent outflow lines.
  • an irregular, coarse temperature profile arises, which does not allow regular cooling of the casting material which corresponds to current requirements. This is particularly the case if the cooling channels have a relatively large clear width, as can be seen in FIGS. 2, 3, 5 and 6 of the patent mentioned.
  • the efficiency of the cooling is reduced by using already heated cooling medium.
  • the inventor has set himself the task of creating a method and a device for cooling rolls of the type mentioned at the outset which cool the roll more uniformly lengthways and crossways over its entire circumference of the jacket.
  • the object is achieved according to the invention in that the coolant is introduced into the cooling channels in question on both end faces of the roller, guided to the other end face and from there is discharged again after a single flow through a cooling channel.
  • the coolant is preferably passed in pairs through two adjacent cooling channels alternately in the counterflow principle.
  • the object is achieved with respect to the device in that from one end of the roller a bore, divided into an axial channel and a pipe channel for the supply or removal of the coolant, to extends into the area of the other end face, and near the two end faces of the roll, alternating inflow and outflow lines for the cooling channels extending over the entire length of the roll core, formed from longitudinal grooves in the roll core and the roll shell, are arranged such that the coolant flows according to the countercurrent principle .
  • the alternating radially branching bores from the axial or tubular channel expediently lead to an exchangeable distributor flange which is flush with the outside of the roller body on both sides in the peripheral area and which feeds the coolant to the corresponding cooling channels or returns them from them.
  • the cold cooling medium is introduced into the cooling channels, in particular, alternately or in pairs.
  • the now heated coolant is taken over from the other distribution flange and returned to the pipe channel when the coolant is supplied via the axial channel. If, on the other hand, the coolant is introduced via the pipe duct, the heated coolant is returned to the axial duct.
  • the distributor flange which can be removed in just a few simple steps, also has the advantage that the cooling channels can be cleaned mechanically without removing the roller shell.
  • the cooling channels can then e.g. simply ejected with a suitable cleaning object.
  • 160 cooling channels are arranged for casting rolls with an outer circumference of 600 mm, and 240 cooling channels for those with a 900 mm circumference. This corresponds to a distance of the cooling channels of about 12 mm on the lateral surface.
  • the cooling channels are fed according to the invention, it is longitudinal and measured an extremely homogeneous temperature distribution across the roll surface. Even if two adjacent cooling channels are flowed through in the same direction by the coolant, it is thus ensured that the same heat is emitted at every point of the roll shell. There is neither a change in the roll geometry nor a loss in quality of the casting belts due to temperature differences.
  • roller 1 shows a roller 1 rotatably mounted in a roll stand. For the sake of clarity, it is from the support stand only a support frame 2 reproduced.
  • Rolling rollers 6, which form a rolling bearing, are located between the supporting frame and the roller, surrounded by a plurality of bearing shells 3, 4, 5.
  • the roller 1 consists essentially of a roller shell 7 and a roller core 8, which is extended over a shoulder 13 to an extension 9.
  • the rotatably mounted in the support frame 2 extension 9 of the roller is covered on the end face by a stuffing box 10, which has an inlet opening 11 and an outlet for the coolant, in practice cooling water.
  • the stuffing box 10 After the inlet opening 11, the stuffing box 10 has a collecting space 14, to which an axial channel 15 connects.
  • the cooling water is guided parallel to the longitudinal axis A of the roller up to the area of the opposite end of the roller.
  • the axial channel 15 is surrounded by a tube channel 16, which serves to return the heated cooling water and leads to the outlet 12.
  • the pipe channel 16 is separated from the axial channel 15 by a sleeve-shaped channel wall 17 which is coaxial with the longitudinal axis A.
  • the roller In the transition area from the roller core 8 to the extension 9, the roller is fitted with a distributor flange 20 which is flush with the outer surface with respect to the outer surface and which _ connected to the roller core 8 by screws 21_ fixes the roller shell 7 and serves for the distribution of the cooling water.
  • a distributor flange 20 which is flush with the outer surface with respect to the outer surface and which _ connected to the roller core 8 by screws 21_ fixes the roller shell 7 and serves for the distribution of the cooling water.
  • bores 22, 23, 24, 25 are provided in the roller core 8 itself for guiding the cooling water from the central to the peripheral area or from it back. Only the bores 22 and 25 lie in the sectional plane, the remaining bores 23 and 24 lie in a plane which is offset by a certain angle and leads through the longitudinal axis A. This angle depends on the number of holes. However, there is always one to the axial channel 15 and one to.
  • the number of bores 22, 23, 24, 25 is between 1 to half the number of cooling channels 26.
  • the cooling channels 26, which run in the axial direction of the roller, are recessed from the roller core 8 in the lateral surface 27 in the form of channels which are open to the outside. When the roller is ready for operation, they are covered by the inner surface of the roller shell 7.
  • the inner ring channels 30, 30a which are further away from the roller end faces 41, 41a, are located above branch channels 33, 33a, which, penetrating a distributor flange 20 in the radial direction, run obliquely inwards and open into the corresponding outer ring channel 32, 32a.
  • branch lines 34, 34a lead in the radial direction to the ends of the cooling channels 26 which are not connected to the outer ring channels 32, 32a.
  • the branch channels 34, 34a are grooves which are recessed from the inner end face of the distributor flange 20 a flat end face 41, 41a of the roller body 8 lying thereon be sealed.
  • each cooling channel 26 is connected at both ends to an outer ring channel 32, 32a or to a branch channel 34, 34a.
  • the cooling channels are alternately connected to the outer ring channels 32, 32a and the branch channels 34, 34a.
  • circuits of the coolant described above are shown again in a stylized manner in FIG. 3.
  • the alternating flow direction of the circuits is clearly visible.
  • FIG. 4 shows a variant of the coolant supply up to the distributor flanges 20 or for the coolant discharge.
  • the cooling water is supplied via the pipe channel 16, which extends only over part of the longitudinal axis A of the roller 1.
  • the supply of cooling water to the inner ring channel 30a of one distributor flange 20 takes place via eight bores 25 perpendicular to the longitudinal axis A.
  • the cooling water supply to the inner ring channel 31 of the other distributor flange 20 located on the distal end face of the roller 1 takes place via likewise eight radial channels 23 running in the diagonal direction .
  • the heated cooling water is discharged in the axial channel 15, which takes up the full bore over part of the longitudinal axis of the roll.
  • the eight bores 22 and 24 pass through the roller body 8 in a manner analogous to the bores 23 and 25.
  • the arrangement according to FIG. 4 has the advantage that no annular chamber 37 according to FIG. 2 with cooling water crossing one another has to be arranged.
  • a solidifying aluminum strip is on the roll shell 7 40 indicated.
  • FIG. 5 shows further details of an embodiment of the invention which is particularly advantageous in terms of production technology, with cooling channels 26 flowing through in alternating fashion from the cooling water and running in the radial direction.
  • the roller body 8 with the cooling channels 26 extending to the end face 41 is firmly connected to the distribution flange 20.
  • the roll shell which is drawn up in the working phase and not shown for reasons of clarity, lies on the lateral surface 27 of the roller body 8 and the lateral surface 42 of the distributor flange 20 and thereby closes the cooling channels 26, the pockets 44, the distribution and collection chambers 43 (depending on the direction of flow of the cooling water) and the outer ring channels 32.
  • the cooling water emerges from the distribution chambers 43 and is distributed over two adjacent cooling channels 26. On the other end of the roller body, the cooling water, which is now heated, is taken up and passed on by similarly designed collecting chambers 43.
  • the distribution and collection chambers 43 are recessed from the end face of the distributor flange 20.
  • the heated cooling water flowing back from the remaining cooling ducts 26 is passed in pairs into an outer opening through pockets 44 forming the outer surface 42 of the distributor flange 20 to the outer annular duct 32. From there, the cooling water flows into the branch channels 33 passing through the distributor flange 20.
  • the cooling water enters the outer ring channel from analog channels and enters the corresponding cooling channels 26 via a pocket.
  • the heated cooling water flows out through a collection chamber for two cooling channels each.
  • FIG. 6 shows on the one hand the transition from a branch channel 34 which supplies the cooling water into the distribution chamber 43 and from there into one of the two cooling channels 26.
  • branch channel 33 leading from the outer ring channel 32 to the inner ring channel 30 adjacent to the end face is shown.
  • FIG. 7 shows the transition of a cooling channel 26 carrying heated cooling water to the pocket 44 and from there into the outer ring channel 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Continuous Casting (AREA)
  • Processing Of Solid Wastes (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
EP87907924A 1986-12-22 1987-12-14 Verfahren und vorrichtung zum kühlen von walzen Expired - Lifetime EP0294407B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87907924T ATE61530T1 (de) 1986-12-22 1987-12-14 Verfahren und vorrichtung zum kuehlen von walzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5132/86A CH674166A5 (xx) 1986-12-22 1986-12-22
CH5132/86 1986-12-22

Publications (2)

Publication Number Publication Date
EP0294407A1 EP0294407A1 (de) 1988-12-14
EP0294407B1 true EP0294407B1 (de) 1991-03-13

Family

ID=4288479

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907924A Expired - Lifetime EP0294407B1 (de) 1986-12-22 1987-12-14 Verfahren und vorrichtung zum kühlen von walzen

Country Status (9)

Country Link
US (1) US4944342A (xx)
EP (1) EP0294407B1 (xx)
JP (1) JPH01502169A (xx)
AT (1) ATE61530T1 (xx)
AU (1) AU8337087A (xx)
BR (1) BR8707599A (xx)
CH (1) CH674166A5 (xx)
DE (1) DE3768657D1 (xx)
WO (1) WO1988004585A1 (xx)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909134A1 (de) * 1989-03-20 1990-10-04 Troester Maschf Paul Dichtungsplatten-kalander
US5626183A (en) * 1989-07-14 1997-05-06 Fata Hunter, Inc. System for a crown control roll casting machine
FR2654372B1 (fr) * 1989-11-16 1992-01-17 Siderurgie Fse Inst Rech Cylindre pour un dispositif de coulee continue sur un ou entre deux cylindres.
GB9123666D0 (en) * 1991-11-07 1992-01-02 British Steel Plc Cooling of rollers
FR2723014B1 (fr) * 1994-07-29 1996-09-20 Pechiney Rhenalu Procede et dispositif de correction de l'ovalisation de cylindres de coulee continue de bande metallique
AUPN053695A0 (en) * 1995-01-13 1995-02-09 Bhp Steel (Jla) Pty Limited Casting roll
FR2745510B1 (fr) * 1996-02-29 1998-05-22 Usinor Sacilor Cylindre de coulee d'une installation de coulee continue sur un ou entre deux cylindres
AUPO188696A0 (en) * 1996-08-27 1996-09-19 Bhp Steel (Jla) Pty Limited Twin roll casting
IT1290603B1 (it) * 1997-05-02 1998-12-10 Voest Alpine Ind Anlagen Cilindro di colata
AUPO832897A0 (en) * 1997-07-30 1997-08-28 Bhp Steel (Jla) Pty Limited Twin roll casting
AU738831B2 (en) * 1997-07-30 2001-09-27 Bluescope Steel Limited Twin roll casting
FR2775916B1 (fr) * 1998-03-13 2000-06-23 Pechiney Rhenalu Procede et dispositif de controle du profil d'epaisseur d'une bande metallique mince obtenue par coulee continue entre moules mobiles
FR2799399B1 (fr) * 1999-10-06 2002-02-08 Pechiney Rhenalu Cylindre de coulee continue de bande metallique comprenant un circuit de refroidissement
IT1314793B1 (it) * 2000-02-15 2003-01-16 Danieli Off Mecc Procedimento di controllo assialita' per bramme uscenti da colatacontinua e relativo dispositivo.
JP2004050193A (ja) * 2002-07-16 2004-02-19 Ishikawajima Harima Heavy Ind Co Ltd ピンチロール
US6971174B2 (en) * 2003-01-08 2005-12-06 Alcoa Inc. Method of manufacturing a caster roll
US6892793B2 (en) * 2003-01-08 2005-05-17 Alcoa Inc. Caster roll
JP4686288B2 (ja) * 2005-07-25 2011-05-25 キャストリップ・リミテッド・ライアビリティ・カンパニー 鋳造用ロール
US20150300738A1 (en) * 2010-05-26 2015-10-22 Astec, Inc. Apparatus and method for tube dryer
EP2804970A1 (de) * 2012-01-19 2014-11-26 Oerlikon Textile GmbH & Co. KG Druckwalze
DE102012106527B4 (de) * 2012-07-18 2016-01-21 Maschinenfabrik Köppern GmbH & Co KG Presswalze für eine Walzenpresse
CN103406506B (zh) * 2013-07-30 2015-11-25 浙江大学 一种优化非晶态金属宽带生产的冷却辊装置
DE102017125836A1 (de) * 2017-11-06 2019-05-09 Brückner Maschinenbau GmbH & Co. KG Kühlwalze

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA619491A (en) * 1961-05-02 Collin Maurice Continuous casting of metals
DE348241C (de) * 1920-06-03 1922-02-03 Paul Senger Transportable Vorrichtung zum Faellen und Ablaengen von Baeumen
FR682730A (fr) * 1929-10-03 1930-06-02 Dispositif de transport de la matière à laminer pendant le laminage
US2058447A (en) * 1932-05-16 1936-10-27 Clarence W Hazelett Metalworking process
US2693012A (en) * 1950-09-08 1954-11-02 Gen Motors Corp Method and apparatus for manufacturing sheet material
US2972472A (en) * 1956-06-11 1961-02-21 Armstrong Cork Co Heat transfer roll
US2850776A (en) * 1956-12-03 1958-09-09 Hunter Eng Co Roll constructions for continuous casting machines
US2936158A (en) * 1958-12-24 1960-05-10 Kentile Inc Heat exchange rolls
CH429042A (de) * 1965-03-09 1967-01-31 Prolizenz Ag Walze für das Giesswalzen von Metall
US3498591A (en) * 1968-05-03 1970-03-03 Johnson Corp Small bore roll syphon
JPS58168462A (ja) * 1982-03-31 1983-10-04 Hitachi Zosen Corp 薄肉鋳片連続鋳造設備におけるツインモ−ルドロ−ラ冷却装置
US4506727A (en) * 1982-06-14 1985-03-26 Usm Corporation Converted temperature control roll
JPS58221645A (ja) * 1982-06-17 1983-12-23 Kawasaki Steel Corp 連続鋳造設備のガイドロール若しくはピンチロールの局部的冷却装置
DE3326746A1 (de) * 1983-07-25 1985-02-14 Wiegard, Gustav, 5810 Witten Wassergekuehlte rolle fuer stranggussanlagen

Also Published As

Publication number Publication date
CH674166A5 (xx) 1990-05-15
EP0294407A1 (de) 1988-12-14
WO1988004585A1 (en) 1988-06-30
ATE61530T1 (de) 1991-03-15
BR8707599A (pt) 1989-03-14
US4944342A (en) 1990-07-31
JPH01502169A (ja) 1989-08-03
AU8337087A (en) 1988-07-15
DE3768657D1 (de) 1991-04-18

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