EP0499563B1 - Kokille zum Stranggiessen metallischer Produkte - Google Patents

Kokille zum Stranggiessen metallischer Produkte Download PDF

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Publication number
EP0499563B1
EP0499563B1 EP92470005A EP92470005A EP0499563B1 EP 0499563 B1 EP0499563 B1 EP 0499563B1 EP 92470005 A EP92470005 A EP 92470005A EP 92470005 A EP92470005 A EP 92470005A EP 0499563 B1 EP0499563 B1 EP 0499563B1
Authority
EP
European Patent Office
Prior art keywords
orifices
mould
internal face
lubricant
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.)
Expired - Lifetime
Application number
EP92470005A
Other languages
English (en)
French (fr)
Other versions
EP0499563A1 (de
Inventor
Jean-Marc Jolivet
Michel Niederlander
Jacques Petegnief
Dominique Rocchi
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.)
Saarstahl AG
Unimetal SA
Ascometal France Holding SAS
Original Assignee
Saarstahl AG
Unimetal SA
Ascometal 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 Saarstahl AG, Unimetal SA, Ascometal SA filed Critical Saarstahl AG
Publication of EP0499563A1 publication Critical patent/EP0499563A1/de
Application granted granted Critical
Publication of EP0499563B1 publication Critical patent/EP0499563B1/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
    • B22D11/0401—Moulds provided with a feed head
    • 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
    • B22D11/07—Lubricating the moulds

Definitions

  • the present invention relates to an ingot mold for continuous casting of metallic products according to the preamble of claim 1.
  • Document JP-A-60-221 156 shows an ingot mold for continuous casting comprising lubricant flow orifices, for example of mineral oil, opening on its internal face forming a mold.
  • a first series of orifices is arranged above the meniscus formed by the liquid metal which flows in the mold.
  • a second series of orifices is placed under this meniscus.
  • the internal face of the lower part of the mold is subjected to friction on the part of the metal product which leaves by the lower end of the mold, this friction being all the more intense as the mold has, in general, a section lower transverse in the lower part than in the upper part.
  • edges delimiting the edges of the lubrication orifices on the internal face of the ingot mold risk catching the surface of the metal which solidifies along this internal face and of affecting the quality thereof.
  • Known lubrication devices generally do not ensure sufficient diffusion of the lubricant to allow the metal to slide in the mold at the speed usually required in a continuous casting process.
  • the object of the invention is in particular to remedy these various drawbacks and to improve the efficiency of lubrication in an ingot mold.
  • a mold for continuous casting comprising lubrication means comprising lubricant flow holes, in particular of mineral oil, opening into its internal face forming a mold and regularly spaced apart between them around the periphery of this internal face, characterized in that the lubricant flow orifices open into concave recesses formed in this internal face and whose surface is substantially greater than the section of said orifices.
  • FIG. 1 shows an ingot mold 10 for forming metal products, such as blooms, slabs or billets, of which a wall portion 12 has been shown.
  • the internal face 14 of the wall 12 forms a mold for liquid metal 16 which is introduced from above the ingot mold 10.
  • the upper surface of the liquid metal in the mold 10 forms a meniscus 18.
  • a skin of solidified metal 19, for example of a billet in formation, is in contact with the internal face 14 of the wall 12. This skin 19 will thicken, from the surface of the meniscus 18, adjacent to the internal face 14 towards the lower end 20 of the mold 10.
  • the wall 12 of the mold 10 is of greater thickness at its lower end 20 than at its upper end 21.
  • the internal face 14 of the wall 12 delimits a volume whose section is decreasing.
  • lubrication orifices 22 regularly spaced apart along the periphery of the internal face 14, are arranged at the same height between the first third and the second third of the height of the mold. .
  • Each orifice opens into a concave recess 24 on the internal face 14.
  • Each concave recess 24 is centered on the orifice 22 which opens into it and has, for example, a frustoconical shape so that its edges form a slight angle with the internal face 14.
  • Grooves 26, hollowed out in the internal face 14, extend substantially vertically, from each concave recess 24 to the lower end 20 of the mold 10.
  • lubricant for example mineral oil
  • Secondary conduits 32 connect each orifice 22 to the distribution chamber 30.
  • the chamber 30 was produced by digging a groove 34 all around the mold 10 and closing this groove at the level of the external face 36 of the wall 12, for example using elements 38 welded to the face 36 of the wall 12.
  • the orifices 22 For an ingot mold used for the production of billets with a cross section of 170 mm on a side, the orifices 22 have, for example, a diameter of between 0.5 and 1 mm, and are spaced apart by 5 mm.
  • the grooves are, for example, 1 mm wide.
  • the lubrication means described above are used to lubricate the lower part of the mold 10.
  • This usually includes lubrication means at the level of its meniscus, which are known and which have therefore not been described, which are used in a complementary manner with the lubrication means according to the invention.
  • the supply of lubricant to the lubrication means according to the invention takes place through the lower end 20 of the mold, thanks to the main conduit 28.
  • the lubricant flows at the level of the internal surface 14 through the orifices 22.
  • the recesses concaves 24 ensure good distribution of the lubricant.
  • the grooves 26 make it possible to evacuate the excess of lubricant emerging from the orifices 22 as well as the gases produced by the cracking of the oil on contact with the hot metal.
  • the lubrication of the lower part of the mold 10 is much more effective than in known arrangements.
  • the sliding of the cast metal is improved in such a way that it is possible to envisage eliminating the means for oscillating the ingot mold. Wrinkles on the surface of the cast metal, due to these oscillations, are therefore avoided or at least attenuated and the ingot mold has an extended service life.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Claims (6)

  1. Kokille zum Stranggießen metallischer Produkte, mit einer Schmieranordnung, welche Ausflußöffnungen (22) für ein Schmiermittel, insbesondere ein Mineralöl, aufweist, die in ihrer Wand (12) vorgesehen sind und in der die Gießform bildenden Innenfläche (14) münden, wobei diese Öffnungen einen gleichmäßigen Abstand zwischen sich aufweisen und entlang des Umfangs dieser Innenfläche verteilt sind, dadurch gekennzeichnet, daß die Öffnungen (22) in konkaven, in dieser Innenfläche vorgesehenen Aussparungen (24) münden, deren Oberfläche erheblich größer ist als der Querschnitt der Öffnungen.
  2. Kokille nach Anspruch 1, dadurch gekennzeichnet, daß ihre Innenfläche (14) Nuten (26) aufweist, die sich im wesentlichen in senkrechter Richtung zwischen einer konkaven Aussparung (24) und dem unteren Ende der Kokille (20) erstrecken.
  3. Kokille nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnungen (22) auf einer Höhe angeordnet sind, die zwischen einem Drittel und zwei Dritteln der Höhe der Kokille liegt.
  4. Kokille nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die konkaven Aussparungen (24) eine kegelstumpfförmige Gestalt aufweisen.
  5. Kokille nach Anspruch 2, dadurch gekennzeichnet, daß das Schmiermittel, ausgehend vom unteren Ende (20) über wenigstens eine Hauptleitung (28) zugeführt wird, welche dieses untere Ende (20) mit einer ringförmigen Schmiermittelverteilkammer (30) verbindet, welche in der Wand (12) der Kokille vorgesehen ist, im wesentlichen auf Höhe der Öffnungen (22) und welche durch zusätzliche Leitungen (32) mit jeder Ausflußöffnung (22) verbunden ist.
  6. Kokille nach Anspruch 5, dadurch gekennzeichnet, daß die zusätzlichen Leitungen (32) im wesentlichen senkrecht zur Innenfläche (14) der Kokille ausgerichtet sind.
EP92470005A 1991-02-11 1992-02-07 Kokille zum Stranggiessen metallischer Produkte Expired - Lifetime EP0499563B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9101551A FR2672524B1 (fr) 1991-02-11 1991-02-11 Lingotiere pour coulee continue de produits metalliques.
FR9101551 1991-02-11

Publications (2)

Publication Number Publication Date
EP0499563A1 EP0499563A1 (de) 1992-08-19
EP0499563B1 true EP0499563B1 (de) 1995-06-07

Family

ID=9409574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92470005A Expired - Lifetime EP0499563B1 (de) 1991-02-11 1992-02-07 Kokille zum Stranggiessen metallischer Produkte

Country Status (6)

Country Link
EP (1) EP0499563B1 (de)
AT (1) ATE123430T1 (de)
DE (1) DE69202776T2 (de)
DK (1) DK0499563T3 (de)
ES (1) ES2074858T3 (de)
FR (1) FR2672524B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734186B1 (fr) * 1995-05-17 1997-06-13 Unimetall Sa Procede de lubrification des parois d'une lingotiere de coulee continue des metaux et lingotiere pour sa mise en oeuvre
DE10349132A1 (de) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Verfahren und Vorrichtung zum Stranggießen von Metall
JP5206791B2 (ja) * 2008-06-30 2013-06-12 日本軽金属株式会社 鋳造用鋳型

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650426A5 (en) * 1981-01-22 1985-07-31 Gautschi Electro Fours Sa Apparatus for the continuous horizontal casting of metal sections
JPS60221156A (ja) 1984-04-17 1985-11-05 Kawasaki Steel Corp 連続鋳造方法
BE899544A (fr) * 1984-04-27 1984-08-16 Centre Rech Metallurgique Procede et dispositif pour la lubrification d'une lingotiere de couleecontinue.
JPS62197248A (ja) * 1986-02-25 1987-08-31 Sumitomo Metal Ind Ltd 連続鋳造鋳型内の潤滑方法

Also Published As

Publication number Publication date
DE69202776D1 (de) 1995-07-13
DK0499563T3 (da) 1995-09-25
ES2074858T3 (es) 1995-09-16
FR2672524A1 (fr) 1992-08-14
DE69202776T2 (de) 1995-11-23
EP0499563A1 (de) 1992-08-19
FR2672524B1 (fr) 1993-05-28
ATE123430T1 (de) 1995-06-15

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