EP0277889A1 - Verfahren zur Steuerung des Pegels der Kontaktlinie der freien Metalloberfläche mit der Stranggiesskokille in einen vertikalen Strangguss - Google Patents

Verfahren zur Steuerung des Pegels der Kontaktlinie der freien Metalloberfläche mit der Stranggiesskokille in einen vertikalen Strangguss Download PDF

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Publication number
EP0277889A1
EP0277889A1 EP88420009A EP88420009A EP0277889A1 EP 0277889 A1 EP0277889 A1 EP 0277889A1 EP 88420009 A EP88420009 A EP 88420009A EP 88420009 A EP88420009 A EP 88420009A EP 0277889 A1 EP0277889 A1 EP 0277889A1
Authority
EP
European Patent Office
Prior art keywords
circuit
mold
metal
fraction
ingot mold
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
EP88420009A
Other languages
English (en)
French (fr)
Other versions
EP0277889B1 (de
Inventor
Jean-Luc Meyer
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.)
Constellium Issoire SAS
Original Assignee
Cegedur Societe de Transformation de lAluminium Pechiney SA
Pechiney Rhenalu SAS
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 Cegedur Societe de Transformation de lAluminium Pechiney SA, Pechiney Rhenalu SAS filed Critical Cegedur Societe de Transformation de lAluminium Pechiney SA
Priority to AT88420009T priority Critical patent/ATE55564T1/de
Publication of EP0277889A1 publication Critical patent/EP0277889A1/de
Application granted granted Critical
Publication of EP0277889B1 publication Critical patent/EP0277889B1/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
    • B22D11/16—Controlling or regulating processes or operations
    • 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
    • B22D11/11—Treating the molten metal
    • B22D11/114—Treating the molten metal by using agitating or vibrating means
    • B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields

Definitions

  • the invention relates to a method for adjusting the level of the line of contact of the free surface of the metal with the ingot mold in a vertical flow of products of any cross-section.
  • the French patent No. 2570340 of which the Applicant is proprietor teaches a level adjusting process of the line of contact of the free surface of the metal with the ingot mold characterized by the application to the liquid during solidification of a periodic magnetic field of variable intensity and direction substantially parallel to the axis of the ingot mold which is adapted intensity depending on the desired level.
  • This process makes it possible to obtain a cortical layer of practically zero thickness, a smooth skin and a fine grain without the prior addition of a refining agent such as AT5B for example, and is very well suited in particular to aluminum-based products. of circular section such as billets.
  • the value of the field applied to the metal is not, at a given instant, the same over the entire periphery of the metal but has differences on one or more fractions of said periphery.
  • This modulation can be obtained, in particular, in three ways: - By modifying the distance between the electrical circuit and the ingot mold, knowing that this distance must be increased in front of the periphery fraction whose level is to be raised or decreased if the level is to be lowered.
  • the distance which separates the circuit from the short sides of the ingot mold is increased and this increase can be from 1 to 2 times the distance which separates the circuit from the large sides, the latter distance being that which is fixed as the basis of operation during casting.
  • this displacement is preferably by a height at most equal to half the natural height of the circuit.
  • this displacement can be limited to the part of the circuit facing the short sides.
  • This side instead of being straight may have one or more curves alternating or not with straight parts or only straight parts, one part is vertical and the other inclined. This inclination is preferably less than or equal to 45 degrees relative to the vertical and produced so as to distance the side of the mold.
  • the invention also comprises an electrical circuit modular allowing to carry out the modifications of distance, the changes of position in height and the variations of shape of the profile.
  • This circuit is characterized in that it is formed by a modular set of elongated, removable elements, adaptable to the format of the cast product, electrically connected to each other, except at one place in the circuit where there is a discontinuity between and 'other of which are placed pads for connection to a current source.
  • these elements can be rectilinear or curved, of rectangular or square section, be placed in the same horizontal plane and their connections between them are such as they allow by placing them in different directions to form a contour similar to that of the poured product and by moving their ends relative to each other to obtain the proper distance.
  • these elements can have the configuration described above with the difference that they are placed in at least two horizontal planes.
  • the profile of the circuit In the case where it is desired to vary the shape of the profile of the circuit, it can be formed of elements of suitable profile and associated as before.
  • a cooling system can be provided, for example by giving the elements a hollow shape so as to be able to circulate within them a coolant. .
  • connection of the elements to each other can be obtained by any means known to those skilled in the art which makes it possible to make the circuit modular and extensible at will while maintaining a suitable electrical contact resistance between elements. It can be for example any connection system by screws and nuts placed at the ends of the elements which are provided with elongated openings and inside which the bodies of the screws can slide, or even any system of clamps, jacks, assemblies via shoulders, or open mortise and tenon.
  • FIG 1 there is a mold (1) of rectangular section and a circuit (2) consisting of two elongated elements (3) which rest on the ends of the elements (4) provided with shoulders.
  • the elements (4) can be moved according to the arrows (5) so as to increase the circuit-ingot mold distance on the short sides of the ingot mold by means of bolt-nut systems (6) arranged in elongated openings (7) placed at the ends of the elements (3).
  • FIG. 3 it can be seen that the shoulder (10) produced on the element (4) is higher than in FIG. 2 so that the element (3) is located in a plane different from the element ( 4) to which it is connected by the bolt-nut system (6).
  • the element (4) has on the side of its profile facing the ingot mold a vertical part (11) upwards and an oblique part (12) downwards.
  • a rectangular ingot mold of dimensions 1050 mm x 460 mm was equipped with a circuit according to the invention comprising 4 copper elements of section 2000 mm2 of which two are 1177 mm long and the other two are 634 mm long.
  • the short elements were equipped at their ends with shoulders and connected to the large bars as indicated in FIG. 2 so as to have a mold-long element distance equal to 20 mm and a mold-short element distance equal to 35 mm.
  • the ends of the elements placed at one of the vertices of the rectangle thus formed were equipped with electrical supply areas and isolated from each other.
  • the invention finds its application in obtaining cast products having a thin cortical layer, a fine grain and a regular skin.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Continuous Casting (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Microwave Amplifiers (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Metal Rolling (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Adornments (AREA)
EP88420009A 1987-01-15 1988-01-13 Verfahren zur Steuerung des Pegels der Kontaktlinie der freien Metalloberfläche mit der Stranggiesskokille in einen vertikalen Strangguss Expired - Lifetime EP0277889B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88420009T ATE55564T1 (de) 1987-01-15 1988-01-13 Verfahren zur steuerung des pegels der kontaktlinie der freien metalloberflaeche mit der stranggiesskokille in einen vertikalen strangguss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8700815 1987-01-15
FR8700815A FR2609656B1 (fr) 1987-01-15 1987-01-15 Procede de reglage au niveau de la ligne de contact de la surface libre du metal avec la lingotiere dans une coulee verticale de produits de section quelconque

Publications (2)

Publication Number Publication Date
EP0277889A1 true EP0277889A1 (de) 1988-08-10
EP0277889B1 EP0277889B1 (de) 1990-08-16

Family

ID=9347227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88420009A Expired - Lifetime EP0277889B1 (de) 1987-01-15 1988-01-13 Verfahren zur Steuerung des Pegels der Kontaktlinie der freien Metalloberfläche mit der Stranggiesskokille in einen vertikalen Strangguss

Country Status (12)

Country Link
US (1) US4848441A (de)
EP (1) EP0277889B1 (de)
JP (1) JPS63180352A (de)
AT (1) ATE55564T1 (de)
AU (1) AU592247B2 (de)
CA (1) CA1329978C (de)
DE (1) DE3860451D1 (de)
ES (1) ES2016678B3 (de)
FR (1) FR2609656B1 (de)
GR (1) GR3000723T3 (de)
NO (1) NO169758C (de)
NZ (1) NZ223143A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0807478A1 (de) * 1996-05-13 1997-11-19 DANIELI & C. OFFICINE MECCANICHE S.p.A. Verfahren und Vorrichtung zum Stranggiessen mit pulsierendem elektromagnetischem Feld

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6341642B1 (en) 1997-07-01 2002-01-29 Ipsco Enterprises Inc. Controllable variable magnetic field apparatus for flow control of molten steel in a casting mold
CA2242037C (en) * 1997-07-01 2004-01-27 Ipsco Inc. Controllable variable magnetic field apparatus for flow control of molten steel in a casting mold
US8070130B2 (en) * 2008-01-22 2011-12-06 Fisher Controls International, Llc Apparatus to bias valve closure members

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095999B (de) * 1953-07-30 1960-12-29 Boehler & Co Ag Geb Verfahren zum kontinuierlichen Giessen, insbesondere von schwer schmelzbaren Metallen
LU83988A1 (fr) * 1982-03-09 1983-11-17 Arbed Lingotieres de coulee continue
FR2570304A1 (fr) * 1984-09-19 1986-03-21 Cegedur Procede de reglage du niveau de la ligne de contact de la surface libre du metal avec la lingotiere dans une coulee verticale
EP0201069A1 (de) * 1985-05-10 1986-11-12 Erik A. Olsson Verfahren zum kontinuierlichen Giessen metallischer Produkte

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397251A1 (fr) * 1977-07-12 1979-02-09 Anvar Procede et dispositif pour diriger, en l'absence de parois, des veines metalliques liquides, notamment pour les centrer, les guider ou controler leur forme circulaire
CH625441A5 (de) * 1977-12-05 1981-09-30 Alusuisse
US4321959A (en) * 1979-07-11 1982-03-30 Olin Corporation Electromagnetic casting shape control by differential screening and inductor contouring
FR2530511B1 (fr) * 1982-07-23 1985-07-05 Cegedur Procede de coulee de metaux dans lequel on fait agir des champs magnetiques
US4512386A (en) * 1982-11-12 1985-04-23 Swiss Aluminium Ltd. Adjustable mold for electromagnetic casting
US4606397A (en) * 1983-04-26 1986-08-19 Olin Corporation Apparatus and process for electro-magnetically forming a material into a desired thin strip shape
JPS613640A (ja) * 1984-06-18 1986-01-09 Sumitomo Electric Ind Ltd 金属の連続鋳造方法
JPS61129261A (ja) * 1984-11-28 1986-06-17 Nippon Steel Corp 表面欠陥の少い連続鋳造鋳片の製造方法
JPS61206550A (ja) * 1985-03-12 1986-09-12 Nippon Steel Corp 鋼の連続鋳造法
FR2595597B1 (fr) * 1986-03-13 1988-04-29 Cegedur Dispositif de reglage du niveau de la ligne de contact de la surface libre du metal avec la lingotiere dans une coulee verticale
FR2595596B1 (fr) * 1986-03-13 1988-04-29 Cegedur Lingotiere permettant de regler le niveau suivant lequel elle est en contact avec la surface libre du metal dans une coulee verticale

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095999B (de) * 1953-07-30 1960-12-29 Boehler & Co Ag Geb Verfahren zum kontinuierlichen Giessen, insbesondere von schwer schmelzbaren Metallen
LU83988A1 (fr) * 1982-03-09 1983-11-17 Arbed Lingotieres de coulee continue
FR2570304A1 (fr) * 1984-09-19 1986-03-21 Cegedur Procede de reglage du niveau de la ligne de contact de la surface libre du metal avec la lingotiere dans une coulee verticale
EP0201069A1 (de) * 1985-05-10 1986-11-12 Erik A. Olsson Verfahren zum kontinuierlichen Giessen metallischer Produkte

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0807478A1 (de) * 1996-05-13 1997-11-19 DANIELI & C. OFFICINE MECCANICHE S.p.A. Verfahren und Vorrichtung zum Stranggiessen mit pulsierendem elektromagnetischem Feld
US5988261A (en) * 1996-05-13 1999-11-23 Danieli & C. Officine Meccaniche Spa Continuous casting method and relative crystalliser for continuous casting

Also Published As

Publication number Publication date
US4848441A (en) 1989-07-18
NO169758C (no) 1992-08-05
NO880152L (no) 1988-07-18
CA1329978C (fr) 1994-06-07
GR3000723T3 (en) 1991-10-10
AU592247B2 (en) 1990-01-04
ES2016678B3 (es) 1990-11-16
NO880152D0 (no) 1988-01-14
ATE55564T1 (de) 1990-09-15
NZ223143A (en) 1990-11-27
NO169758B (no) 1992-04-27
FR2609656B1 (fr) 1989-03-24
DE3860451D1 (de) 1990-09-20
FR2609656A1 (fr) 1988-07-22
AU1027388A (en) 1988-07-21
JPS63180352A (ja) 1988-07-25
JPH0569629B2 (de) 1993-10-01
EP0277889B1 (de) 1990-08-16

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