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EP0553597A1 - Lingotière électromagnétique pour la coulée continue - Google Patents

Lingotière électromagnétique pour la coulée continue Download PDF

Info

Publication number
EP0553597A1
EP0553597A1 EP92811025A EP92811025A EP0553597A1 EP 0553597 A1 EP0553597 A1 EP 0553597A1 EP 92811025 A EP92811025 A EP 92811025A EP 92811025 A EP92811025 A EP 92811025A EP 0553597 A1 EP0553597 A1 EP 0553597A1
Authority
EP
European Patent Office
Prior art keywords
screen
bar
inductor
mold according
coolant
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Withdrawn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
EP92811025A
Other languages
German (de)
English (en)
Inventor
Miroslaw Plata
Yves Krähenbühl
René von Känel
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
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 Alusuisse Lonza Services Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0553597A1 publication Critical patent/EP0553597A1/fr
Withdrawn legal-status Critical Current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
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • B22D11/015—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces using magnetic field for conformation, i.e. the metal is not in contact with a mould

Definitions

  • the invention relates to an electromagnetic continuous casting mold for the vertical casting of bars or bolts, with an inductor, an internally cooled electromagnetic screen and a cooling device with a coolant outlet opening directed onto the surface of the bar.
  • the shield serves to weaken the electromagnetic field and thus to reduce the electromagnetic force on the surface of the bar against the inside of the bar in the upper region of the inductor in order to maintain the equilibrium with the metallostatic pressure of the liquid bar part, which decreases upwards. In practice, this should ensure that the surface of the liquid ingot part is as vertical as possible and that the meniscus radius is as small as possible at the transition from the vertical ingot surface to the horizontal metal bath level in the mold.
  • the outer shape of the screen usually has the shape of a triangle in cross section with the tip pointing downward and the thickness increasing upward.
  • the inventors have set themselves the goal of improving an electromagnetic mold of the type mentioned at the outset in such a way that the electromagnetic shield is simpler and less expensive to manufacture and less maintenance-intensive while maintaining proven mold frame and inductor configurations.
  • the screen is tubular with a circular or oval cross-section, with an oval cross-section having its large diameter parallel to the longitudinal axis of the bar and the ratio of large to small diameter 1: 1 to 3: 1, preferably a maximum of 2: 1 is.
  • the cross-sectional shape of the screen according to the invention was calculated on the basis of calculations with a simulation model of a casting plant, the retention of the meniscus shape resulting from the tried and tested configurations of electromagnetic molds and of the speed field in the liquid bar part being specified as a boundary condition.
  • the shield can expediently be adjusted in height with respect to the position of the inductor parallel to the longitudinal axis of the bar.
  • the screen is preferably arranged at least partially within a guide plate made of electrically insulating, poorly heat-conducting material.
  • the coolant outlet opening of the cooling device In a first possible arrangement of the coolant outlet opening of the cooling device, it is arranged above the screen and directed onto a coolant guide surface of a shaped body arranged on the side of the screen facing away from the bar.
  • the coolant jet is directed between the inductor and the screen onto the bar surface, it being possible for the shaped body with the coolant guide surface to be height-adjustable in relation to the position of the inductor for fine adjustment of the coolant contact line or surface on the bar surface.
  • a mold 10 has a coolant box 12 for a coolant 14.
  • a cooled inductor 18 is fixed on the coolant box 12 via an intermediate layer 16 made of electrically insulating material.
  • This by means of a flowing coolant internally cooled screen 24 can be made of copper or brass, for example, with an outer large diameter d 1 of 18 mm in the vertical direction, an outer small diameter d 2 of 10 mm lying in the horizontal direction and a wall thickness of 1 mm .
  • the coolant box 12 has a coolant outlet opening 26 which is located above the screen 24 and which is directed onto a coolant guide surface 28 of a shaped body 30 which is also height-adjustable in relation to the inductor 18, but is independent of the guide plate 22.
  • the coolant 14 emerging from the coolant outlet opening 26 is conducted via the coolant guide surface 28 to the surface of the ingot 32.
  • the guide plate 22 with the integrated screen 24 is fastened to the support body 20 in a height-adjustable manner.
  • the guide plate 22 extends vertically downward over the inductor 18 and thus simultaneously serves as a heat shield 22a.
  • the billet is cooled here below the inductor 18 via nozzles 34, which are arranged around the billet 32 and have a nozzle opening 36, in which the coolant is atomized to form a spray mist 38 and is passed onto the billet surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
EP92811025A 1992-01-30 1992-12-28 Lingotière électromagnétique pour la coulée continue Withdrawn EP0553597A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH26892 1992-01-30
CH268/92 1992-01-30

Publications (1)

Publication Number Publication Date
EP0553597A1 true EP0553597A1 (fr) 1993-08-04

Family

ID=4183134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92811025A Withdrawn EP0553597A1 (fr) 1992-01-30 1992-12-28 Lingotière électromagnétique pour la coulée continue

Country Status (5)

Country Link
EP (1) EP0553597A1 (fr)
JP (1) JPH05277642A (fr)
AU (1) AU3041192A (fr)
CA (1) CA2088075A1 (fr)
ZA (1) ZA9362B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2151664C1 (ru) * 1998-08-10 2000-06-27 Акционерное общество "Белокалитвинское металлургическое производственное объединение" Устройство для отливки полых слитков при непрерывном вертикальном литье

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323841A (en) * 1992-11-04 1994-06-28 Wagstaff, Inc. Annular metal casting unit
CN108405821B (zh) * 2018-04-03 2019-09-03 东北大学 无裂纹大规格镁合金扁锭的铸造装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2047894A1 (fr) * 1969-06-24 1971-03-19 Kuibyshevsky Metallurg
FR2141658A1 (en) * 1971-04-27 1973-01-26 Belokalitvensky Metal Continuous ingot casting mould - employing an electromagnetic inductor to produce ingots having exteriors of required geometric typ
US4126175A (en) * 1977-02-14 1978-11-21 Getselev Zinovy N Electromagnetic mould for the continuous and semicontinuous casting of hollow ingots
EP0284565A1 (fr) * 1987-03-23 1988-09-28 Alusuisse-Lonza Services Ag Moule pour la coulée continue électromagnétique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2047894A1 (fr) * 1969-06-24 1971-03-19 Kuibyshevsky Metallurg
FR2141658A1 (en) * 1971-04-27 1973-01-26 Belokalitvensky Metal Continuous ingot casting mould - employing an electromagnetic inductor to produce ingots having exteriors of required geometric typ
US4126175A (en) * 1977-02-14 1978-11-21 Getselev Zinovy N Electromagnetic mould for the continuous and semicontinuous casting of hollow ingots
EP0284565A1 (fr) * 1987-03-23 1988-09-28 Alusuisse-Lonza Services Ag Moule pour la coulée continue électromagnétique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2151664C1 (ru) * 1998-08-10 2000-06-27 Акционерное общество "Белокалитвинское металлургическое производственное объединение" Устройство для отливки полых слитков при непрерывном вертикальном литье

Also Published As

Publication number Publication date
ZA9362B (en) 1993-08-03
CA2088075A1 (fr) 1993-07-31
AU3041192A (en) 1993-08-05
JPH05277642A (ja) 1993-10-26

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