EP0227154B1 - Crystallisers employed for almost horizontal continuous casting - Google Patents

Crystallisers employed for almost horizontal continuous casting Download PDF

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Publication number
EP0227154B1
EP0227154B1 EP86202132A EP86202132A EP0227154B1 EP 0227154 B1 EP0227154 B1 EP 0227154B1 EP 86202132 A EP86202132 A EP 86202132A EP 86202132 A EP86202132 A EP 86202132A EP 0227154 B1 EP0227154 B1 EP 0227154B1
Authority
EP
European Patent Office
Prior art keywords
axis
taper
continuous casting
employed
curved side
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
EP86202132A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0227154A1 (en
Inventor
Leandro Nannini
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.)
Danieli and C Officine Meccaniche SpA
Original Assignee
Danieli and C Officine Meccaniche SpA
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 Danieli and C Officine Meccaniche SpA filed Critical Danieli and C Officine Meccaniche SpA
Priority to AT86202132T priority Critical patent/ATE50175T1/de
Publication of EP0227154A1 publication Critical patent/EP0227154A1/en
Application granted granted Critical
Publication of EP0227154B1 publication Critical patent/EP0227154B1/en
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
    • B22D11/043—Curved moulds

Definitions

  • This invention concerns a crystalliser employed for almost horizontal continuous casting according to the preamble of claim 1.
  • the traditional curved ingot are known from e.g. DE-B-1 025 578, FR-A-1 479 946 and US-A-3 623 533.
  • the ferrostatic pressure in ingot moulds of continuous casting machines and, in particular, in ingot moulds for almost horizontal continuous casting has an increased value on the side having the interior curve of the mould and a reduced value on the side having the exterior curve.
  • such difference in ferrostatic pressure may even reach 30% in ingot moulds for almost horizontal continuous casting.
  • the lengthwise contact surface of the exterior curve is greater than that of the interior curve, and such contact surface varies considerably according to the shapes and dimensions.
  • the cooling conditions therefore, differ as between the interior courve and exterior curve.
  • the crystalliser according to the present invention has a suitable taper as between the frace of the interior curve and the face of the exterior curve of the ingot mould in relation to the axis of the casting line.
  • such taper is dissymmetrical as between the interior curved side and exterior curved side of the ingot mould in relation to the axis of the casting line.
  • the taper is greater in the interior courved side and smaller in the exterior curved side, depending on the degree to which the machine is positioned below the horizontal, such degree being defined by the angle between the horizontal and the raduis of curvature of the casting line running from the centre of curvature to the top of the ingot mould.
  • the lateral faces of the ingot mould retain their normal taper.
  • crys- tallisers possess on their exterior curved side, in relation to the axis of the casting line understood as being the lengthwise axis of the ingot mould with a constant curvature, a taper which is less than or, at the most, the same as those of the exterior curved sides of known embodiments.
  • Such taper is preferably be nil, that is to say, in a preferred embodiment the exterior curved side has the same curvature as the axis of the casting line.
  • the lateral faces of the mould are embodied as at present, whereas the inner curved side is provided with an increased taper, which varies progressively until it reaches a value which may even be twice the normal value.
  • An ingot mould or crystalliser 10 in its traditional form has a conformation according to the lines A and C; the interior curved side is referenced with 11, the exterior curved side with 12 and the lateral faces with 15.
  • the inlet and outlet are referenced with 13 and 14 respectively, while 16 is the level of molten material.
  • the taper of the exterior curved side is substantially reduced progressively (depending on the angle "alpha" of the degree to which the machine is positioned below the horizontal; please see Fig.1)
  • the taper of the interior curved side is substantially increased by an equal value.
  • Such tapers are respectively those of the interior curved side and exterior curved side in relation to the axis 17 of the casting line.
  • the actual line of the interior curved side according to the invention therefore, takes up a development according to the conformation B instead of the conformation A whereas the exterior curved side in turn takes up a development according to the conformation D instead of the conformation C.
  • the taper of the exterior curved side 12 is shown as nil in the example of Fig.2, that is to say, the exterior curved side 12 is parallel to the casting line axis 17 and has a constant curvature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP86202132A 1985-12-23 1986-12-01 Crystallisers employed for almost horizontal continuous casting Expired - Lifetime EP0227154B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86202132T ATE50175T1 (de) 1985-12-23 1986-12-01 Gusskokillen fuer nahezu waagerechten strangguss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT83452/85A IT1187604B (it) 1985-12-23 1985-12-23 Perfezionamenti ai cristallizzatori per colata continua suborizzontale e cristallizzatori cosi' perfezionati
IT8345285 1985-12-23

Publications (2)

Publication Number Publication Date
EP0227154A1 EP0227154A1 (en) 1987-07-01
EP0227154B1 true EP0227154B1 (en) 1990-02-07

Family

ID=11322104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86202132A Expired - Lifetime EP0227154B1 (en) 1985-12-23 1986-12-01 Crystallisers employed for almost horizontal continuous casting

Country Status (4)

Country Link
EP (1) EP0227154B1 (it)
AT (1) ATE50175T1 (it)
DE (1) DE3668808D1 (it)
IT (1) IT1187604B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3724628C1 (de) * 1987-07-22 1988-08-25 Mannesmann Ag Stranggiesskokille zur Erzeugung duenner Straenge im Brammenformat
EP0306751B1 (en) * 1987-09-07 1994-06-29 DANIELI & C. OFFICINE MECCANICHE S.p.A. Casting method for a continuous casting machine of a reduced height and consequential immersed teeming nozzle
IT1265065B1 (it) * 1993-05-17 1996-10-30 Giovanni Arvedi Lingottiera perfezionata per colata continua di acciaio, particolarmente adatta per la colata continua di bramme sottili
ES2183120T3 (es) * 1997-12-24 2003-03-16 Europa Metalli Spa Lingotera de fundicion continua.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025578B (de) * 1952-09-06 1958-03-06 Ver Leichtmetallwerke Gmbh Stranggiessanlage
FR1479946A (fr) * 1966-05-16 1967-05-05 Mannesmann Ag Coquille de coulée continue refroidie par liquide pour la production de blocs de fonte rectangulaires
US3623533A (en) * 1970-01-08 1971-11-30 Viktor Nikolaevich Khorev Method of molten metal height control in curved mold continuous casting

Also Published As

Publication number Publication date
DE3668808D1 (de) 1990-03-15
IT8583452A0 (it) 1985-12-23
IT1187604B (it) 1987-12-23
EP0227154A1 (en) 1987-07-01
ATE50175T1 (de) 1990-02-15

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