EP0409708B1 - Plattenkokille für Metallstranggiessen - Google Patents

Plattenkokille für Metallstranggiessen Download PDF

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Publication number
EP0409708B1
EP0409708B1 EP90402033A EP90402033A EP0409708B1 EP 0409708 B1 EP0409708 B1 EP 0409708B1 EP 90402033 A EP90402033 A EP 90402033A EP 90402033 A EP90402033 A EP 90402033A EP 0409708 B1 EP0409708 B1 EP 0409708B1
Authority
EP
European Patent Office
Prior art keywords
plates
cavity
ingot mould
small
plate
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
EP90402033A
Other languages
English (en)
French (fr)
Other versions
EP0409708A1 (de
Inventor
Dominique Werquin
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.)
Sollac SA
Clecim SAS
Original Assignee
Sollac SA
Clecim SAS
Lorraine de Laminage Continu SA SOLLAC
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 Sollac SA, Clecim SAS, Lorraine de Laminage Continu SA SOLLAC filed Critical Sollac SA
Priority to AT90402033T priority Critical patent/ATE96705T1/de
Publication of EP0409708A1 publication Critical patent/EP0409708A1/de
Application granted granted Critical
Publication of EP0409708B1 publication Critical patent/EP0409708B1/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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds

Definitions

  • the present invention relates to an ingot mold with plates for the continuous casting of metal, in particular steel.
  • molds comprising four cooled plates which delimit between them a cavity for the formation of a cast slab of a fixed fixed section.
  • This cavity is rectilinear in the direction of the slab extraction and generally has a roughly rectangular cross section.
  • the plates forming two opposite walls of the mold cavity are applied against bearing faces formed on the other plates constituting the other two opposite walls of said mold cavity. These bearing faces constitute at the same time joint faces between the plates, in the sense that they extend to the cavity of the mold and thus define joints between the internal faces of the plates.
  • the plates of this mold are generally clamped against each other by clamping devices acting roughly perpendicular to the bearing faces.
  • the slabs cast in this type of ingot mold are then subjected to rolling to obtain sheets.
  • sheets from slabs thick about 300mm undergo a strong cross-dressing because a slab of about 1700 mm wide is transformed into a sheet having a width of about 4500 mm.
  • One solution to avoid this folding defect consists, for example, in eliminating the corners of the slab by making, at each corner, a chamfer by torch.
  • the present invention relates to an ingot mold with plates for the continuous casting of metal, according to the content of claim 1.
  • the sides of the right angle of the right triangle have a length of between 30 and 15mm, depending on the size of the slabs and the grade of steel to be cast.
  • the mold 1 for the continuous casting of steel has two large opposite plates 2 and two small opposite plates 3 which delimit between them a rectilinear cavity 4 in the direction of extraction of the slab and of cross section roughly rectangular.
  • the plates 2 and 3 made of copper or a copper alloy, are fixed on steel reinforcing plates respectively 5 and 6 and are provided with grooves 7 provided for the passage of an appropriate cooling agent such as water. .
  • the small plates 3 are supported on corresponding support faces 8 of the two large plates 2.
  • the plates 2 and 3 are clamped against each other by clamping devices 10 which act on each small plate 3 via the corresponding reinforcement plates 6 in a direction roughly perpendicular to the faces d 'support 8.
  • the angles of the cavity 4 are cut by chamfers 9.
  • chamfers 9 are produced on the pair of small plates 3 and, as can be seen in FIG. 2, they are each formed by the hypotenuse "c" of a right triangle T whose sides "a" and “b” of the right angle have a length greater than 30mm and preferably between 30 and 150mm.
  • the side “a” has a length equal to 80mm and the side “b” has a length equal to 50mm.
  • each right triangle T is located in the plane of the internal wall of the large adjacent plate 2 and the side "b" is located in the plane of the internal wall of the small plate 3 on which the corresponding chamfer 9.
  • the small plates 3 are connected to the large plates 2 by bearing faces 8 which are inclined towards the inside of the mold 1 at an angle of between 5 and 7 °.
  • each longitudinal wall of the large plates 2 comprises, on the one hand, a draft 11 whose edge is also inclined towards the inside of the ingot mold at an angle of between 5 and 7 ° and, on the other hand, an extension 12 which forms, with said draft 11, an embedding by song at an angle for the small adjacent plate 3.
  • the folding is all the more important as the thickness of the slab is high.
  • FIGS. 3A to 3D The folding defects of the edges of the sheets obtained after rolling the slab were compared and shown in FIGS. 3A to 3D.
  • Figs. 3A, 3B, 3C and 3D represent the images in section respectively at the level of the head, the middle, and the foot, of a bank of laminated sheet obtained after rolling slabs having chamfers of respective dimensions expressed in mm: 30 X 20; 50 X 65; 60 X 65; 80 X 50.
  • a sheet made from a 300 mm thick slab without chamfer, not shown in the figures has a fold of about 40 mm with an average loss of material of 80 mm.
  • the folding effect is no more than about 3 mm and does not disturb more than 15 mm of edge (3B and 3C).
  • each small plate 30 of the mold 1 comprises, opposite the bearing faces 8, a shoe 31 which rests on the side face of the extension 12 of each large adjacent plate 2.
  • the shoe 31 is long enough to take up the bending forces due to the withdrawal heat.
  • each shoe 31 may include a zone 32 which is not in contact with the lateral face of the extension 12 and a thinned section 33 which creates a lever arm exerting an antagonistic force in the heat of withdrawal.
  • FIG. 5 we will describe the clamping device 10.
  • a clamping device which exerts a force on a small plate the clamping device exerting a force on the opposite small plate being identical.
  • the clamping device 10 comprises two jacks 100 superimposed in a vertical plane.
  • the jacks 100 of each group of jacks are joined together by a spacer 20.
  • Each jack 100 comprises a cylinder 101 in which a hollow rod 102 is slidably mounted, one end 102a of which is integral with the reinforcement plate 6 of the corresponding small plate 3.
  • an operating rod 103 which passes through a housing 104 fixed on the end of the cylinder 101.
  • the operating rod 103 has a shoulder 103a which provides, with the housing 104 and the body of said operating rod 103, an internal chamber 105 closed by a piston 106 slidably mounted on the body of the rod 103 and inside the housing 104 .
  • a cap 107 providing with the piston 106 a small internal chamber 108 into which opens a small pipe 109 which can be connected by a connector 110 to a pump not shown.
  • the cap 107 has an internal threaded bore 107a into which a screw 111 is screwed.
  • This screw 111 also has an internal bore 111a allowing the body of the rod 103 to pass through said screw.
  • the end 111b of the screw 111 is in contact with the piston 106.
  • the clamping operation of the plates 2 and 3 of the mold 1 is carried out as follows.
  • the large plates 2 are tightened to come into contact effortlessly on the small plates 3, then the small plates 3 are tightened by action on the operating screw 103 which has a hexagon 103b for this purpose, so that the bearing faces 8 of the small plates 3 and of the large plates 2 come in contact.
  • This operation is carried out by successive bearing between the operating rod 103 of the upper cylinder and the lower cylinder.
  • the small chamber 108 is pressurized which has the effect of displacing the piston 106, compressing the elastic washers 112 and exerting a determined force on the small plate 3 by through the rod 102.
  • the screw 111 is turned so that its end 111b comes into contact with the piston 106, which makes it possible to disconnect the pump.
  • the elastic washers 112 hydraulically prestressed exert on the small plate 103 an almost constant force making it possible to resume the displacements due to dilations during casting.
  • the ingot mold with plates according to the invention allows, thanks in particular to the dimensional characteristics of the chamfers of angle of the cavity, the total elimination of the defect of folding in edge of sheet and this without any incidence on the quality of the product obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Claims (8)

  1. Plattenkokille für das Stranggießen von Metall, insbesondere Brammen, mit vier gekühlten Platten (2,3 - 30), die zwischen sich einen Hohlraum (4) mit im wesentlichen rechteckigem Querschnitt begrenzen, dessen Ecken durch Fasen (9) abgeschnitten sind, wobei die Platten zwei gegenüberliegende große Platten (2), welche die großen Wände des Hohlraums bilden, und zwei gegenüberliegende kleine Platten (3 - 30), welche die kleinen Wände des Hohlraums bilden und sich an entsprechende Anlageflächen (8) der großen Platten (2) legen, umfassen, wobei die Platten (2, 32 - 30) dazu bestimmt sind, gegeneinander durch Anpreßvorrichtungen (10) gepreßt zu werden, die im wesentlichen senkrecht zu den Anlageflächen (8) wirken, dadurch gekennzeichnet, daß die Fase (9) jeder Ecke des Hohlraums (4) durch die Hypotenuse eines rechtwinkligen Dreieckes gebildet ist, dessen Seiten des rechten Winkels eine große und eine kleine Seite einer Länge von über 30 mm umfassen, wobei die große Seite jedes rechtwinkligen Dreieckes jeweils in der Ebene der großen Wand des Hohlraums (4) und die kleine Seite jedes rechtwinkligen Dreieckes jeweils in der Ebene der kleinen Wand des Hohlraums (4) liegt, und daß die Anlageflächen (8) zwischen den benachbarten Platten (2, 3 - 30) zum Inneren der Kokille (1) unter einem zwischen 5 und 7° liegenden Winkel geneigt sind.
  2. Plattenkokille nach Anspruch 1, dadurch gekennzeichnet, daß die Seiten des rechten Winkels des rechtwinkligen Dreieckes eine Länge zwischen 30 und 150 mm haben.
  3. Plattenkokille nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Seiten des rechten Winkels des rechtwinkligen Dreieckes gleich 80 mm bzw. 50 mm für Brammen einer Dicke von 300 mm sind.
  4. Plattenkokille nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Fase (9) jeder Ecke des Hohlraums (4) auf dem Paar von Platten (3 - 30) ausgebildet ist, welches die kleinen Wände des Hohlraums (4) bildet.
  5. Plattenkokille nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die die kleinen Wände des Hohlraums (4) bildenden Platten (30) entgegengesetzt zu jeder Fläche (8) der Anlage an der benachbarten Platte (2) einen Schuh (31) aufweisen, der sich gegen eine Seitenfläche eines Fortsatzes (12) der benachbarten Platte (2) legt und ausreichend lang ist, auf Schwindungswärmen zurückgehende Biegekräfte aufzunehmen.
  6. Plattenkokille nach Anspruch 5, dadurch gekennzeichnet, daß jeder Schuh (31) eine Zone (32), die sich von der seitenfläche des Fortsatzes (12) der benachbarten Platte (2) entfernt, und einen verdünnten Querschnitt (33) aufweist, der eine den Schwindungswärmen gegenwirkende Kraft ausübt.
  7. Plattenkokille nach Anspruch 1, bei welcher die Anpreßvorrichtungen (10) für die Platten (2, 3 - 30) durch Arbeitszylinder (10) gebildet sind, dadurch gekennzeichnet, daß jeder Arbeitszylinder (100) Mittel zur Regulierung der Haltekraft des Anpressens aufweist.
  8. Plattenkokille nach Anspruch 7, dadurch gekennzeichnet, daß die Reguliermittel für die Kraft und das Aufrechterhalten des Anpressens durch einen Stapel von hydraulisch vorgespannten elastischen Scheiben (112) gebildet sind.
EP90402033A 1989-07-19 1990-07-13 Plattenkokille für Metallstranggiessen Expired - Lifetime EP0409708B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402033T ATE96705T1 (de) 1989-07-19 1990-07-13 Plattenkokille fuer metallstranggiessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR898909731A FR2649918B1 (fr) 1989-07-19 1989-07-19 Lingotiere a plaques pour la coulee continue de metal
FR8909731 1989-07-19

Publications (2)

Publication Number Publication Date
EP0409708A1 EP0409708A1 (de) 1991-01-23
EP0409708B1 true EP0409708B1 (de) 1993-11-03

Family

ID=9383935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402033A Expired - Lifetime EP0409708B1 (de) 1989-07-19 1990-07-13 Plattenkokille für Metallstranggiessen

Country Status (7)

Country Link
US (1) US5191924A (de)
EP (1) EP0409708B1 (de)
JP (1) JP3001063B2 (de)
AT (1) ATE96705T1 (de)
DE (1) DE69004367T2 (de)
ES (1) ES2048459T3 (de)
FR (1) FR2649918B1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2776595Y (zh) * 2005-03-07 2006-05-03 鞍钢集团新钢铁有限责任公司 一种板坯连铸用的异形结晶器
CN1840252A (zh) * 2005-03-28 2006-10-04 鞍钢集团新钢铁有限责任公司 中厚板坯连铸连轧板卷的生产工艺
DE102007054911B4 (de) * 2007-11-15 2015-02-05 Thyssenkrupp Steel Europe Ag Breitenverstellbare Kokille und Verfahren zur Herstellung eines Warmbandes
US20110308760A1 (en) * 2009-02-09 2011-12-22 Hisamune Tanaka Apparatus for production of metallic slab using electron beam, and process for production of metallic slab using the apparatus
KR101360564B1 (ko) 2011-12-27 2014-02-24 주식회사 포스코 연속주조 주형
DE102012108952A1 (de) 2012-09-21 2014-05-15 Voestalpine Stahl Gmbh Vorrichtung zum Stranggießen von Metallen
JP6085571B2 (ja) * 2014-01-06 2017-02-22 三島光産株式会社 連続鋳造用鋳型
JP6097268B2 (ja) * 2014-12-02 2017-03-15 レノボ・シンガポール・プライベート・リミテッド 入力装置、そのソフトウェアキーボード表示方法、及びコンピュータが実行可能なプログラム
CN110405163B (zh) * 2019-09-03 2023-05-23 山东钢铁股份有限公司 一种消除大宽度钢板轧材边部黑线缺陷的设备及方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237252A (en) * 1963-10-01 1966-03-01 Babcock & Wilcox Co Mold clamping devices
CH577863A5 (de) * 1974-11-04 1976-07-30 Concast Ag
FR2436636A1 (fr) * 1978-09-21 1980-04-18 Fives Cail Babcock Dispositif pour le reglage de l'une des deux plaques frontales d'une lingotiere de coulee continue
SU850280A1 (ru) * 1979-04-04 1981-08-03 Центральный Ордена Трудового Красногознамени Научно-Исследовательский Ин-Ститут Черной Металлургии Им.И.П.Бардина Кристаллизатор дл установок непре-РыВНОй РАзлиВКи МЕТАллОВ
SU923727A1 (ru) * 1979-06-22 1982-04-30 Sergej P Bakumenko Кристаллизатор для формирования слитка i
LU81982A1 (de) * 1979-12-11 1981-07-23 Arbed Zum bogenstranggiessen von mehreck-stahlprofilen geeignete stranggiesskokillen sowie verfahren zur nachbearbeitung ihrer innenflaechen
JPS5731444A (en) * 1980-07-31 1982-02-19 Mitsubishi Heavy Ind Ltd Mold for continuous casting machine
JPS5747557A (en) * 1980-09-06 1982-03-18 Daido Steel Co Ltd Mold for continuous casting
CH664915A5 (de) * 1984-10-26 1988-04-15 Concast Service Union Ag Durchlaufkokille zum stranggiessen von stahlstraengen mit polygonalem querschnitt.
FR2584322B1 (fr) * 1985-07-04 1987-12-31 Fives Cail Babcock Dispositif d'assemblage des cotes d'une lingotiere de coulee continue
US4947925A (en) * 1989-02-24 1990-08-14 Wagstaff Engineering, Inc. Means and technique for forming the cavity of an open-ended mold

Also Published As

Publication number Publication date
FR2649918B1 (fr) 1994-06-10
DE69004367T2 (de) 1994-04-28
ATE96705T1 (de) 1993-11-15
EP0409708A1 (de) 1991-01-23
JPH0381048A (ja) 1991-04-05
ES2048459T3 (es) 1994-03-16
US5191924A (en) 1993-03-09
DE69004367D1 (de) 1993-12-09
JP3001063B2 (ja) 2000-01-17
FR2649918A1 (fr) 1991-01-25

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