EP0425402B1 - Procédé et dispositif de coulée continue de produits métalliques minces entre deux cylindres - Google Patents

Procédé et dispositif de coulée continue de produits métalliques minces entre deux cylindres Download PDF

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Publication number
EP0425402B1
EP0425402B1 EP90470058A EP90470058A EP0425402B1 EP 0425402 B1 EP0425402 B1 EP 0425402B1 EP 90470058 A EP90470058 A EP 90470058A EP 90470058 A EP90470058 A EP 90470058A EP 0425402 B1 EP0425402 B1 EP 0425402B1
Authority
EP
European Patent Office
Prior art keywords
rolls
covering
metal
contact
casting
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
EP90470058A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0425402A1 (fr
Inventor
Hervé Tavernier
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 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 Stahl AG, USINOR Sacilor SA filed Critical Thyssen Stahl AG
Publication of EP0425402A1 publication Critical patent/EP0425402A1/fr
Application granted granted Critical
Publication of EP0425402B1 publication Critical patent/EP0425402B1/fr
Anticipated expiration legal-status Critical
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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
    • B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
    • B22D11/0671—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for heating or drying

Definitions

  • the invention relates to the field of continuous casting of thin metallic products, particularly steel, by the technique known as casting between two cylinders.
  • the solidified metal part on the small faces does not catch on it, it will be laminated by the cylinders, which will cause, if necessary, the formation of defects on the product, or even the blocking of the machine or the deterioration of the cylinders if the clamping force to be provided by the latter to maintain a determined thickness of products is too great.
  • the object of the invention is to slow down the cooling of the edges of the product during their solidification, so as to make them more malleable and less prone to hanging against the small faces.
  • the subject of the invention is a process for supplying heat during their solidification at the edges of a thin metallic product continuously cast on a machine comprising a casting space defined by two rotating cylinders and two plates of so-called "small faces" lateral obturation, characterized in that a coating intended to react exothermically with the metal which comes into contact with it is applied continuously or intermittently to the portions of the cooled surface of the cylinders close to the small faces .
  • Another subject of the invention is a cylinder of a machine for continuous casting of metal products between two cylinders, characterized in that it comprises, in the immediate vicinity of each of its parts intended to be in contact with the small faces, an annular zone comprising a hollow surface engraving promoting the adhesion of a consumable exothermic coating.
  • the invention finally relates to a device for continuously casting metal products between two cylinders cooled in rotation, characterized in that it comprises means for applying continuously or discontinuously to the portions of the cooled surface of the cylinders close to the small faces, a coating intended to react exothermically with the metal which comes into contact with it.
  • the exothermic coating reacts with the metal which will constitute the edges of the product, and locally raises the temperature of this metal locally, so as to absorb the additional cooling which the edges give the proximity of small faces.
  • the material 5 intended to constitute the exothermic coating is contained in containers 6,6 ′, 6 ⁇ , 6 ′′′ from which it flows and is deposited, for example by simple gravity, on the zones of the cylinders 1, 1 ′ Closest to the small faces 2,2 ′.
  • the containers 6,6 ′, 6 ⁇ , 6 ′′′ are provided with means 7,7 ′, 7 ⁇ , 7 ′′′ making it possible to control the flow of material 5.
  • the zones of the cylinders 8.8 ′, 8 ⁇ , 8 ′′′ closest to the small faces are thus each coated with a band 9.9 ′, 9 ⁇ , 9 ′′′ with an exothermic coating.
  • Each of these areas is approximately 10 mm wide, and is located on the edges of the cylinders if the small faces are pressed against the ends of the cylinders.
  • the adhesion of the coating is favored if the zones 8,8 ′, 8 ⁇ , 8 ′′′ have a hollow surface engraving, such as a multiplicity of cells, as symbolized in the figure, serving as a receptacle for the coating.
  • This coating consists of a product capable of reacting rapidly in an exothermic manner on contact with the liquid metal. It can, for example, essentially contain metallic elements such as aluminum, silicon or calcium, the simple dissolution of which in liquid steel is exothermic. This effect is further accentuated if the liquid steel is incompletely deoxidized, which allows the metallic elements to react with the oxygen dissolved in the metal, a reaction which is itself exothermic. These metallic elements can also be mixed with oxides reducible by them at high temperature, such as iron and / or manganese oxides. Thus, the deoxidizers can continue to react exothermically even after the coating has been covered by the skin of solidified metal, to which heat is then transmitted.
  • metallic elements such as aluminum, silicon or calcium
  • Cohesion of the coating can be ensured by an inorganic or organic binder facilitating its application to the edges of the cylinders by appropriate means and its adhesion to the cylinders until it comes into contact with the metal.
  • Deposit by simple gravity can thus be replaced by deposit by projection or by coating.
  • the coating is regenerated by said application means continuously, or discontinuously if is not fully consumed after a single contact with the metal.
  • the binder must have as low a calorific capacity as possible in order not to reduce the effectiveness of exothermic products too much.
  • the invention is also applicable to machines provided with so-called “translatable” cylinders making it possible to vary the width of the product by moving the cylinders parallel to one another between two castings or during a casting.
  • the coating application means must be mobile in order to be able to follow the movements of the edges of the product.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP90470058A 1989-10-27 1990-10-11 Procédé et dispositif de coulée continue de produits métalliques minces entre deux cylindres Expired - Lifetime EP0425402B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914251 1989-10-27
FR8914251A FR2653693A1 (fr) 1989-10-27 1989-10-27 Procede et dispositif de coulee continue de produits metalliques minces entre deux cylindres.

Publications (2)

Publication Number Publication Date
EP0425402A1 EP0425402A1 (fr) 1991-05-02
EP0425402B1 true EP0425402B1 (fr) 1995-08-16

Family

ID=9386947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90470058A Expired - Lifetime EP0425402B1 (fr) 1989-10-27 1990-10-11 Procédé et dispositif de coulée continue de produits métalliques minces entre deux cylindres

Country Status (16)

Country Link
US (1) US5117896A (no)
EP (1) EP0425402B1 (no)
JP (1) JPH03155438A (no)
AT (1) ATE126459T1 (no)
AU (1) AU634297B2 (no)
CA (1) CA2028546A1 (no)
DE (1) DE69021682T2 (no)
DK (1) DK0425402T3 (no)
ES (1) ES2076348T3 (no)
FI (1) FI90834C (no)
FR (1) FR2653693A1 (no)
GR (1) GR3017478T3 (no)
IE (1) IE903804A1 (no)
NO (1) NO904618L (no)
PT (1) PT95708A (no)
ZA (1) ZA908591B (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4014593B2 (ja) * 2004-11-15 2007-11-28 三菱日立製鉄機械株式会社 双ロール式連続鋳造機及び双ロール式連続鋳造方法
AU2008100847A4 (en) * 2007-10-12 2008-10-09 Bluescope Steel Limited Method of forming textured casting rolls with diamond engraving
US10046384B2 (en) 2015-09-30 2018-08-14 Nucor Corporation Side dam with pocket

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413650A1 (fr) * 1989-08-18 1991-02-20 USINOR SACILOR Société Anonyme Procédé et dispositif de coulée continue directe de produits métalliques minces

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US690917A (en) * 1899-10-14 1902-01-14 Carl Wilhelm Bildt Apparatus for continuous rolling direct from fluid metal.
US1947493A (en) * 1931-07-17 1934-02-20 Rose Engle Company Coating of machine elements
US2314902A (en) * 1940-04-16 1943-03-30 Metallizing Engineering Compan Method for causing sprayed metal to adhere to metal surfaces
FR1364717A (fr) * 1963-05-14 1964-06-26 Duralumin Procédé et machine pour la coulée permettant l'amélioration de l'état de surface et ébauches obtenues par ce procédé
SU846076A1 (ru) * 1978-11-24 1981-07-15 Научно-Исследовательский Институттяжелого Машиностроения Производствен-Ного Объединения "Уралмаш" Машина непрерывного лить лис-ТОВОй зАгОТОВКи
JPS58179543A (ja) * 1982-04-13 1983-10-20 Mitsubishi Heavy Ind Ltd 金属薄板の連続鋳造装置
JPS58187244A (ja) * 1982-04-23 1983-11-01 Hitachi Zosen Corp 鋳片連続鋳造設備におけるシエル形成法
JPS59199150A (ja) * 1983-04-28 1984-11-12 Kawasaki Steel Corp 薄鋳片連続鋳造機による薄鋳片の鋳造方法
JPS611451A (ja) * 1984-06-12 1986-01-07 Ishikawajima Harima Heavy Ind Co Ltd 連続鋳造方法及び装置
JPS61162249A (ja) * 1985-01-11 1986-07-22 Mitsubishi Heavy Ind Ltd 薄板連続鋳造装置
JPS62214A (ja) * 1985-06-24 1987-01-06 井関農機株式会社 カツタ−の取付装置
JPH0698464B2 (ja) * 1987-01-07 1994-12-07 三菱重工業株式会社 ベルト式連続鋳造機のベルト変形防止装置
JPH0712526B2 (ja) * 1987-04-08 1995-02-15 日新製鋼株式会社 薄板連鋳機
JP2636244B2 (ja) * 1987-07-03 1997-07-30 セイコーエプソン株式会社 光磁気記憶用光ヘッド
JPS6417782A (en) * 1987-07-13 1989-01-20 Hitachi Elevator Eng & Service Controller for elevator
US4784209A (en) * 1987-08-06 1988-11-15 Bethlehem Steel Corporation Continuous casting apparatus
JP2558786B2 (ja) * 1988-02-15 1996-11-27 三菱重工業株式会社 ベルト式連鋳機のベルトコーティング方法
FR2628993B3 (fr) * 1988-03-25 1990-01-26 Siderurgie Fse Inst Rech Dispositif d'obturation laterale de l'espace de coulee d'une lingotiere de coulee continue entre cylindres

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0413650A1 (fr) * 1989-08-18 1991-02-20 USINOR SACILOR Société Anonyme Procédé et dispositif de coulée continue directe de produits métalliques minces

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
& JP-A-1 104 449 (NIPPON STEEL CORP.) 21-04-1989 *

Also Published As

Publication number Publication date
NO904618L (no) 1991-04-29
FI90834B (fi) 1993-12-31
ZA908591B (en) 1992-06-24
ES2076348T3 (es) 1995-11-01
EP0425402A1 (fr) 1991-05-02
DK0425402T3 (da) 1996-01-02
NO904618D0 (no) 1990-10-25
DE69021682D1 (de) 1995-09-21
DE69021682T2 (de) 1996-02-29
CA2028546A1 (fr) 1991-04-28
FI905293A0 (fi) 1990-10-26
IE903804A1 (en) 1991-07-17
ATE126459T1 (de) 1995-09-15
AU634297B2 (en) 1993-02-18
AU6492690A (en) 1991-05-02
FR2653693B1 (no) 1994-04-22
FR2653693A1 (fr) 1991-05-03
FI90834C (fi) 1994-04-11
PT95708A (pt) 1991-09-13
GR3017478T3 (en) 1995-12-31
US5117896A (en) 1992-06-02
JPH03155438A (ja) 1991-07-03

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