EP0268143A2 - Procédé et lingotière pour la coulée continue de lingots métalliques, en particulier de lingots d'acier - Google Patents

Procédé et lingotière pour la coulée continue de lingots métalliques, en particulier de lingots d'acier Download PDF

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Publication number
EP0268143A2
EP0268143A2 EP87116203A EP87116203A EP0268143A2 EP 0268143 A2 EP0268143 A2 EP 0268143A2 EP 87116203 A EP87116203 A EP 87116203A EP 87116203 A EP87116203 A EP 87116203A EP 0268143 A2 EP0268143 A2 EP 0268143A2
Authority
EP
European Patent Office
Prior art keywords
mold
strand
walls
bath level
area
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Withdrawn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
EP87116203A
Other languages
German (de)
English (en)
Other versions
EP0268143A3 (fr
Inventor
Adalbert Röhrig
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.)
Concast Standard AG
Original Assignee
Concast Standard 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 Concast Standard AG filed Critical Concast Standard AG
Publication of EP0268143A2 publication Critical patent/EP0268143A2/fr
Publication of EP0268143A3 publication Critical patent/EP0268143A3/fr
Withdrawn legal-status Critical Current

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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
    • B22D11/10—Supplying or treating molten metal
    • 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
    • B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
    • 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
    • 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
    • B22D11/041—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting

Definitions

  • the invention relates to a method for the continuous casting of metal with the features of the preamble of claim 1, or a mold with the features of the preamble of claim 5.
  • the casting metal is fed from an intermediate container into the mold in an open pouring stream or via a pouring tube.
  • the mold can be arranged vertically, at an angle, or horizontally.
  • a strand crust solidifies within the mold, which generally has cooled copper walls, and after it emerges from the mold, encloses the liquid core.
  • the strand crust shrinks and pulls irregularly away from the individual mold walls.
  • molds are provided with a converging mold cavity in the direction of the strand.
  • a multi-stage continuous casting mold which consists of an upper and a lower part.
  • the upper part of the mold is designed as a closed tubular body and the lower part has cooled walls that can move independently of one another. Both between the upper and lower part and between the individual walls are larger areas at the corners surface of the mold cavity is open, so that openings in the strand shell cannot be stopped at these points by the mold walls. Furthermore, higher casting speeds are limited within such molds, despite good strand cooling.
  • a continuous casting mold with a rectangular cross section which has four plates which are arranged in a frame or on a base plate. With their cooled wall surfaces, the four plates form a mold cavity. At the four corners of the mold cavity, a cooled mold wall surface meet with an end face of an adjacent mold wall surface and form butt joints. The four molded walls are clamped together using lock screws. Between each mold wall and the frame are further set screws that allow adjustment of the mold cavity. During the casting operation, the mold cavity remains rigidly screwed on, regardless of the current geometry of the solidifying strand.
  • the invention has for its object to provide a method and a mold that overcomes the disadvantages mentioned and in particular further reduces the risk of breakthrough, allows higher casting speeds and improves the quality even with strands with difficult-to-cast steel qualities.
  • the method according to the invention and the device according to the invention for the first time, create a mold with movable walls which automatically act elastically against the solidified strand crust in accordance with the current strand geometry and which has no stomata at the corners. This reduces the risk of breakthrough even at higher casting speeds, and at the same time improves the strand quality, especially with regard to surface defects. Due to the optimal automatic elastic adjustment of the mold walls to the current strand geometry, strands can be cooled more evenly at different casting speeds, or strands with different steel qualities within the mold. However, the irregular cooling seen between the mold and the solidifying strand crust during horizontal or oblique strand casting over the strand periphery can be significantly improved. If appropriate measures are taken, gravity can also be compensated for.
  • the walls can move resiliently into the strand cavity when the mold is empty.
  • the strand cross section is undershot.
  • the mold walls are resiliently adjusted against a start-up head cross-section that is adapted to the nominal cross-section of the mold exit.
  • the mold walls can also be held by force devices on a corresponding nominal size cross section until a sufficiently strong strand shell has solidified, which can absorb the elastic adjustment of the walls without damage.
  • the mold walls of which are between the mold entrance and the Ko have no interruption in the mold exit, it is particularly advantageous if the mold walls are set elastically in or above the bath level area against a caliber part adapted to the strand nominal cross-section.
  • This part of the caliber remaining during the casting operation can have the shape of a thin-walled ring and can consist, for example, of copper.
  • a closed casting system such as when casting in a horizontally arranged mold, it can be an additional advantage if the caliber part is connected to a pouring tube.
  • the elastic adjustment of all four walls not only prevents air from entering, especially when casting at an angle or horizontally, it also provides a good seal against the escape of cast metal, even when the mold is oscillating and the caliber part is stationary.
  • the elastically adjustable mold walls can be used with their strength equipment, e.g. Piston cylinder units, make movements transverse to the direction of the run.
  • the mold walls can also be pivotable with elastic force devices in addition to a parallel displacement.
  • the casting cone can automatically enlarge or reduce at any time around axes parallel to the mold wall surface and thus adapt to the current shrinkage of the strand crust.
  • Power devices or power components that act parallel to the mold wall prevent the gap joints in the corners of the mold cavity from opening.
  • exemplary embodiments can be advantageous, the mold walls of which are separated between the area of the nominal bath level and the area below the nominal bath height and have a butt joint between these two parts that seals against breakthroughs in the strand crust.
  • the mold is proposed walls in the area of the target bath level as a tubular body or as a plate mold with two broad and two narrow sides.
  • any length ratio for the bath level area and the area below the level can be selected for mold walls that are separated by their length.
  • the range of the target bath level height can have a tolerance range of the bath level of, for example, ⁇ 2 cm and areas of two max. 10 cm.
  • the mold walls arranged on a partial length of the mold cavity in the region below the target bath level are additionally equipped with elastic force devices for elastic adjustment against the mold walls in the region of the target bath level.
  • Fig. 1 and Fig. 2, 2 is a mold for the continuous casting of metal strands with a polygonal, for example rectangular, cross-section. It consists of a frame 3 in which four mold walls 5, 6, 7 and 8 are arranged. These mold walls 5 - 8 form with their cooled mold wall surfaces 10, 11, 12 and 13 a mold cavity 15. Each cooled mold wall surface 10 - 13 collides with one end face 16, 17, 18 and 19 of an adjacent mold wall and forms a butt joint that is sealed against breakthroughs , e.g. 20th
  • the mold walls 5 - 8 are resiliently supported with respect to the frame 3 over the entire length of the mold.
  • force devices 22 such as springs, piston cylinder units etc.
  • the mold walls 5-8 can be set automatically against the solidified strand shell 24 in accordance with the current strand geometry.
  • the mold walls have a range of motion into the nominal cross section of the strand to be cast, or away from the nominal cross section.
  • a caliber part 28 is clamped in above the nominal bath level 27, which is adapted to the strand nominal cross section on the pouring side.
  • the mold walls 5 - 8 are thus arranged substantially immovably in the area of the nominal bath level 27 on a predetermined nominal cross section for a strand 30 to be cast.
  • a time is fixed during casting hold, and the bath level 31 has not yet reached the target bath level 27.
  • a start-up head 33 with seals 34 seals the mold outlet at this time.
  • the elastically adjustable mold walls 5 - 8 can abut against a predetermined dimension 36 of the starting head 33 during the casting period, which corresponds to the nominal dimension of the mold cavity on the strand exit side.
  • the strand shell 24 must be sufficiently resistant to the pressure of the mold walls 5-8 in terms of its compressive strength.
  • the mold walls 5 - 8 can be kept in place of the start-up head 33 by other means, such as piston-cylinder units, spindles, caliber rings, etc., on a corresponding nominal cross-section.
  • the mold walls 5 - 8, or their mold wall surfaces 10 - 13 can perform limited pivoting movements about horizontal and vertical or vertical tilt axes 40 or 38 parallel to each mold wall surface and thereby follow the geometry of the cast strand.
  • An eccentric 41 is intended to indicate that the mold 2 oscillates during casting and / or is exposed to high-frequency vibrations.
  • 8 mold walls 50 form an octagonal, aperture-like mold cavity 51 in a mold 49.
  • the mold walls 50 are supported by a frame 52 and are pressed against one another and against a strand crust of a cast strand, not shown, by force devices 54.
  • Two force devices 54 which are generally arranged one above the other per mold wall, generate forces or force components that are directed essentially transversely to the mold wall surface 55 of the mold wall 50.
  • Dash-dotted lines indicate a position displaced into the mold cavity by transverse movement or pivoting of some mold walls 50.
  • Such mold walls can not only adapt to the geometry of a cast strand, they can also be set to a new strand format during and outside the casting operation.
  • Each mold wall 50 can be assigned additional force devices 57 which act essentially parallel to the mold wall surface 55 and ensure that the gap joints always remain closed and are therefore sealed against steel flowing out of the strand shell.
  • the arrows 58, 59 shown instead of the force devices 54, 57 indicate force devices or force components of such.
  • a force device according to arrow 59 can be arranged such that force components act simultaneously on the mold wall 50 parallel and transversely to the mold wall surface 55.
  • 61 denotes a pouring spout or a pouring tube in a horizontal continuous casting installation, which is connected to a distributor vessel (not shown).
  • the pouring tube 61 protrudes into a mold cavity 62 of a horizontally arranged mold 63.
  • the part 64 thus has the function of a caliber part like the caliber part 28 in FIG. 1.
  • Mold walls 65, 65 ⁇ which are resiliently mounted in a frame 66, resiliently stand against the pouring tube 61.
  • An end face 67 of the pouring tube 61 directed against the mold cavity 62 can, for example, be provided with a boron nitride layer.
  • An outer surface 68 of the pouring tube 61 which is in frictional contact with the oscillating walls of the mold 63, can be produced or coated with metal, metal ceramic or another abrasion-resistant, high-temperature-resistant coating.
  • a device 70 is provided for a lubricant supply.
  • the gravity of the cast strand can coexist on one or more lower mold walls 65 ⁇ during horizontal and oblique casting be taken into account. Gravity could also be compensated for by known electromagnetic fields.
  • cooled mold walls 78 with elastic force devices 79 are movably arranged.
  • the mold walls 78 can be held in their desired position by the force devices 79 or by other means when a new strand is cast on. While the casting operation is running, you can automatically attach yourself to the strand according to the current strand geometry.
  • the mold walls 78 are separated from the mold walls 81 transversely to the strand running direction 82.
  • a butt joint 83 sealing against breakthroughs of the strand shell can be achieved if the mold walls 78 can be adjusted against the mold walls 81 with additional elastic force devices 84, such as springs etc., in the opposite direction to the strand running direction 82.
  • the structure of the mold in the area 75 below the target bath level 77 can in principle be chosen as in FIG. 2 or 3.
  • the walls are pressed against the mold cavity 76 or against a strand located therein, for example with force devices 79 arranged obliquely to the mold wall surface 86.
  • a triangle of forces 85 shows the distribution of the forces, the force component 85 ⁇ directed transversely to the mold wall surface 86 being greater than the force component 85 ⁇ directed parallel to the mold wall surface 86.
  • the mold walls 81 can, as shown in FIG. 7, be constructed as a seamless tubular body 91 or, as in FIG. 8, as a plate mold with two narrow sides 93, which are clamped between two broad sides 92.
  • This mold part can also be designed as a block mold.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP87116203A 1986-11-19 1987-11-04 Procédé et lingotière pour la coulée continue de lingots métalliques, en particulier de lingots d'acier Withdrawn EP0268143A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4626/86A CH671533A5 (fr) 1986-11-19 1986-11-19
CH4626/86 1986-11-19

Publications (2)

Publication Number Publication Date
EP0268143A2 true EP0268143A2 (fr) 1988-05-25
EP0268143A3 EP0268143A3 (fr) 1988-07-27

Family

ID=4279643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87116203A Withdrawn EP0268143A3 (fr) 1986-11-19 1987-11-04 Procédé et lingotière pour la coulée continue de lingots métalliques, en particulier de lingots d'acier

Country Status (5)

Country Link
EP (1) EP0268143A3 (fr)
JP (1) JPS63137547A (fr)
KR (1) KR880005979A (fr)
BR (1) BR8706235A (fr)
CH (1) CH671533A5 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359348A2 (fr) * 1988-09-14 1990-03-21 MANNESMANN Aktiengesellschaft Procédé et dispositif de coulée continue horizontale pour métaux
US4911223A (en) * 1987-11-17 1990-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Endless track type continuous casting machine
EP0367024A1 (fr) * 1988-10-31 1990-05-09 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif pour la coulée continue de métaux, en particulier de l'acier
EP0686444A1 (fr) 1994-06-06 1995-12-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Partie en aval d'une lignotière pour coulée continue ayant des faces latérales minces
WO1999036212A1 (fr) * 1998-01-13 1999-07-22 Sms Concast Division Of Sms Schloemann-Siemag Inc. Moule de coulee en continu ajustable
WO2000044515A1 (fr) * 1999-01-28 2000-08-03 Thöni Industriebetriebe Gmbh Dispositif pour la coulee en continu horizontale, en particulier la coulee de feuillards
EP1468760A1 (fr) * 2003-04-16 2004-10-20 Concast Ag Lingotière tubalaire pour la coulée continue

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3197230B2 (ja) * 1997-04-08 2001-08-13 三菱重工業株式会社 ビレット連続鋳造機及び鋳造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1579849A (fr) * 1967-09-11 1969-08-29
US3580327A (en) * 1968-07-15 1971-05-25 Georgy Lukich Khim Continuous casting mold
DE1758982A1 (de) * 1968-09-11 1972-03-02 Demag Ag Laengsgeteilte Durchlaufgiessform fuer Metall,insbesondere Strahlstranggiessanlagen
FR2466289A1 (fr) * 1979-09-24 1981-04-10 Adamec Alfred Lingotiere pour la coulee continue horizontale de metaux, en particulier pour la coulee d'acier
JPS61137651A (ja) * 1984-12-10 1986-06-25 Kawasaki Heavy Ind Ltd 水平連続鋳造用モ−ルド装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1579849A (fr) * 1967-09-11 1969-08-29
US3580327A (en) * 1968-07-15 1971-05-25 Georgy Lukich Khim Continuous casting mold
DE1758982A1 (de) * 1968-09-11 1972-03-02 Demag Ag Laengsgeteilte Durchlaufgiessform fuer Metall,insbesondere Strahlstranggiessanlagen
FR2466289A1 (fr) * 1979-09-24 1981-04-10 Adamec Alfred Lingotiere pour la coulee continue horizontale de metaux, en particulier pour la coulee d'acier
JPS61137651A (ja) * 1984-12-10 1986-06-25 Kawasaki Heavy Ind Ltd 水平連続鋳造用モ−ルド装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 10, Nr. 333 (M-534)[2389], 12. November 1986; & JP-A-61 137 651 (KAWASAKI HEAVY IND. LTD) 25-06-1986 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4911223A (en) * 1987-11-17 1990-03-27 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Endless track type continuous casting machine
EP0359348A3 (en) * 1988-09-14 1990-08-29 Mannesmann Aktiengesellschaft Method and apparatus for the horizontal continuous casting of metals
US5033536A (en) * 1988-09-14 1991-07-23 Mannesmann Aktiengesellschaft Method and apparatus for a horizontal continuous casting apparatus for metals
EP0359348A2 (fr) * 1988-09-14 1990-03-21 MANNESMANN Aktiengesellschaft Procédé et dispositif de coulée continue horizontale pour métaux
EP0367024A1 (fr) * 1988-10-31 1990-05-09 DANIELI & C. OFFICINE MECCANICHE S.p.A. Dispositif pour la coulée continue de métaux, en particulier de l'acier
CN1048668C (zh) * 1994-06-06 2000-01-26 丹尼利机械厂联合股票公司 用于连续铸造的带有薄侧壁的下游铸型结构
EP0686444A1 (fr) 1994-06-06 1995-12-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Partie en aval d'une lignotière pour coulée continue ayant des faces latérales minces
US6041848A (en) * 1998-01-13 2000-03-28 Sms Concast Division Of Sms-Schloemann Siemag Inc. Adjustable continuous casting mold
WO1999036212A1 (fr) * 1998-01-13 1999-07-22 Sms Concast Division Of Sms Schloemann-Siemag Inc. Moule de coulee en continu ajustable
WO2000044515A1 (fr) * 1999-01-28 2000-08-03 Thöni Industriebetriebe Gmbh Dispositif pour la coulee en continu horizontale, en particulier la coulee de feuillards
AT407845B (de) * 1999-01-28 2001-06-25 Thoeni Industriebetriebe Gmbh Vorrichtung zum horizontalen stranggiessen von bändern
EP1468760A1 (fr) * 2003-04-16 2004-10-20 Concast Ag Lingotière tubalaire pour la coulée continue
WO2004091826A1 (fr) * 2003-04-16 2004-10-28 Concast Ag Lingotiere tubulaire pour coulee continue
CN100344394C (zh) * 2003-04-16 2007-10-24 康卡斯特股份公司 用于连铸的管形锭模
US7422049B2 (en) 2003-04-16 2008-09-09 Concast Ag Tubular mould for continuous casting
AU2004230206B2 (en) * 2003-04-16 2008-12-11 Concast Ag Tubular mould for continuous casting

Also Published As

Publication number Publication date
KR880005979A (ko) 1988-07-21
JPS63137547A (ja) 1988-06-09
CH671533A5 (fr) 1989-09-15
BR8706235A (pt) 1988-06-21
EP0268143A3 (fr) 1988-07-27

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