EP0600248A1 - Verfahren zur Bildung eines Trennspalts, insbesondere in der Metallurgie - Google Patents

Verfahren zur Bildung eines Trennspalts, insbesondere in der Metallurgie Download PDF

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Publication number
EP0600248A1
EP0600248A1 EP93117793A EP93117793A EP0600248A1 EP 0600248 A1 EP0600248 A1 EP 0600248A1 EP 93117793 A EP93117793 A EP 93117793A EP 93117793 A EP93117793 A EP 93117793A EP 0600248 A1 EP0600248 A1 EP 0600248A1
Authority
EP
European Patent Office
Prior art keywords
melt
solid
substance
steel
vibrations
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Withdrawn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
EP93117793A
Other languages
German (de)
English (en)
French (fr)
Inventor
Raimund Brückner
Heinz Buhr
Steve Lee
Bernhard Schiefer
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0600248A1 publication Critical patent/EP0600248A1/de
Withdrawn legal-status Critical Current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
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0631—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a travelling straight surface, e.g. through-like moulds, a belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • B22D11/053—Means for oscillating the moulds
    • 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
    • B22D11/0648—Casting surfaces
    • B22D11/066—Side dams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/08—Shaking, vibrating, or turning of moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/24—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings characterised by a rectilinearly movable plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/62—Pouring-nozzles with stirring or vibrating means

Definitions

  • the invention relates to a method for the formation of a separation gap between at least two substances which wet, deposit or adhere to one another on contact, in particular in metallurgy.
  • components are, for example, gas purging stones, slide closure parts, sleeves or immersion spouts.
  • the object of the invention is to propose a method by which substances, in particular a molten metal and a solid, are prevented from sticking to one another in order to enable the substances to move relative to one another.
  • the stated object is achieved by the features of claim 1.
  • the vibrations imprinted on the fabric or fabrics prevent the fabrics from sticking to one another.
  • the vibrations are preferably ultrasonic vibrations.
  • Embodiments of the invention result from the subclaims and the description of exemplary embodiments, exemplary embodiments from the field of metallurgy being shown. However, the invention is not limited to this, but can also be used in other fields.
  • An immersion spout 1 made of refractory, ceramic material is attached to the bottom of a metallurgical vessel 2.
  • a channel 3 of the immersion spout 1 is used for the passage of molten steel.
  • An ultrasonic generator 4 is attached to the immersion nozzle 1. This imprints the immersion nozzle 1 as a solid mechanical vibrations with a frequency greater than 20 kHz. The vibrations reproduce in the immersion nozzle 1 on the wall 5 of the channel 3.
  • a separation gap is formed between the melt flowing through the channel 3 and the wall 5, because the high-frequency vibrations prevent the melt from remaining in permanent contact with the wall 5.
  • This separation gap prevents 5 solid substances, in particular Al2O3 particles, from adhering to the wall.
  • the discharge behavior of the melt is also improved overall by the separation gap, since the separation gap reduces the friction between the wall 5 and the melt.
  • the width of the separation gap is of the order of fractions of a mm, for example of the order of a few ⁇ m.
  • an ultrasonic generator 4 is shown on the outside of the immersion spout 1. If necessary, several such generators 4 can be arranged distributed on the outer circumference of the immersion spout 1. The generator 4 can also surround the outer circumference of the immersion spout 1 in a ring.
  • the ultrasound generator 4 or extensions connected to it can also be built into the wall of the immersion spout 1 (see FIG. 1, right). It then vibrates the melt as a liquid.
  • the generator 4 is preferably arranged at the level of the immersion spout 1, in which experience has shown that there is a tendency to form Al 2 O 3 caking. The ultrasonic vibrations prevent 5 crystallization nuclei from growing on the wall for growing deposits.
  • FIG. 2 shows the rolls 6, 7, which are rotated in opposite directions, of a device for carrying out the twin-roll process, with which the casting of a thin steel strip close to the final dimension is used.
  • the molten steel is applied to the rollers 6, 7 and conveyed downwards at a distance between the rollers 6, 7.
  • boundary plates 8, 9 are arranged as solid bodies next to the rollers 6, 7.
  • Ultrasonic generators 4 are attached to the boundary plates 8, 9 made of steel or refractory ceramic. These set the boundary plates 8, 9 in vibration. These prevent the melt from freezing or caking on them, as described above.
  • two drive rollers 10, 11 are provided for a conveyor belt 12.
  • the melt is applied to the conveyor belt 12 as a thin belt.
  • the molten steel cools down on the conveyor belt 12 until it solidifies and is drawn off from it.
  • limiting strips 14, 15 are provided.
  • Ultrasonic generators 4 are arranged on the boundary strips 14, 15 and impress vibrations on the boundary strips 14, 15. In the manner described, these lead to separating gaps between the boundary strips 14, 15 as a solid and the steel melt as a liquid, so that the steel melt on the boundary strips 14, 15 cannot freeze and crystallization nuclei contained in the steel melt do not adhere to the boundary strips 14, 15 accumulate and therefore no caking can grow on them.
  • a device is shown which is similar with regard to the casting of a thin strip close to the final dimensions of FIG. 3.
  • the conveyor belt 12 driven by the drive rollers 10, 11 is dispensed with.
  • a receiving plate 16 made of steel or refractory, ceramic material is provided, which is arranged on fixed bearings 17, 18.
  • the limiting strips 14, 15 are arranged on the side of the mounting plate 16. These can be formed in one piece with the mounting plate 17 or attached to the mounting plate 17 as separate components.
  • At least one ultrasound generator 4 is arranged at the bottom of the mounting plate 17.
  • ultrasound generators 4 can be provided on the boundary strips 15, 16. These can be omitted if the ultrasound generator 4 arranged on the mounting plate 17 also sets the limiting strips 15, 16 in the desired ultrasound vibrations.
  • the molten steel is applied to the mounting plate 16 in the region 13 from a slot die.
  • the mounting plate 16 is at an angle of inclination W to the horizontal H, which is dimensioned such that the melt flows out obliquely downwards on the mounting plate 16 to the area 13 by the ultrasonic vibrations of the mounting plate 16 and the limiting strips 14, 15 between these solids and Steel melt a separating gap, which prevents the steel melt or particles from freezing or caking from it on the receiving plate 16 and the limiting strips 14, 15, thus enabling the desired movement of the melt relative to the receiving plate 16 and the limiting strips 14, 15.
  • the melt is drawn off by the inclined position of the receiving plate 16 at an angle W.
  • the removal of the melt can be improved with a receiving plate 16 arranged at an angle W to the horizontal H or can be achieved with a receiving plate 16 arranged in the horizontal H if the ultrasonic vibrations impressed on the receiving plate 16 are directed so that they move the melt away from the region Imprint 13 directional guide component in direction F.
  • an ultrasound generator 4 can also be used on other components, for example gas purging stones or slide closures of metallurgical vessels, in order to avoid freezing of the melt or caking of impurities containing high alumina.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Continuous Casting (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP93117793A 1992-12-04 1993-11-03 Verfahren zur Bildung eines Trennspalts, insbesondere in der Metallurgie Withdrawn EP0600248A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4240849A DE4240849A1 (de) 1992-12-04 1992-12-04 Verfahren zur Bildung eines Trennspaltes, insbesondere in der Metallurgie
DE4240849 1992-12-04

Publications (1)

Publication Number Publication Date
EP0600248A1 true EP0600248A1 (de) 1994-06-08

Family

ID=6474410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93117793A Withdrawn EP0600248A1 (de) 1992-12-04 1993-11-03 Verfahren zur Bildung eines Trennspalts, insbesondere in der Metallurgie

Country Status (5)

Country Link
EP (1) EP0600248A1 (zh)
JP (1) JPH06238398A (zh)
CN (1) CN1057032C (zh)
CA (1) CA2110625A1 (zh)
DE (1) DE4240849A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997047413A1 (de) * 1996-06-07 1997-12-18 Salzgitter Ag Bandgiessanlage
WO1999059749A1 (de) * 1998-05-15 1999-11-25 Sms Demag Ag Verfahren und vorrichtung zum abziehen eines metallstranges
US11027330B2 (en) 2016-08-10 2021-06-08 Nucor Corporation Method of thin strip casting

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4410511A1 (de) * 1994-03-28 1995-10-05 Didier Werke Ag Verfahren und Vorrichtung zum endabmessungsnahen Vergießen von Schmelzen
CH696756A5 (de) * 2003-10-08 2007-11-30 Main Man Inspiration Ag Verfahren zum Erzeugen von oszillierenden Bewegungen an Seitenabdichtungen einer Bandgiessmaschine für die Erzeugung eines Metallbandes sowie eine Vorrichtung zum Durchführen des Verfahrens.
CN101905295A (zh) * 2010-08-05 2010-12-08 安徽工业大学 一种采用超声波振动的连铸结晶器装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1031135A (fr) * 1951-01-18 1953-06-19 Procédé perfectionné de moulage des métaux
JPS58151949A (ja) * 1982-03-05 1983-09-09 Sumitomo Metal Ind Ltd 浸漬ノズルの詰り防止方法
JPS58224045A (ja) * 1982-06-22 1983-12-26 Nippon Steel Corp 溶鋼の低温連続鋳造方法
JPS60130455A (ja) * 1983-12-20 1985-07-11 Kawasaki Steel Corp 急冷薄板の製造方法
JPS62230458A (ja) * 1986-04-01 1987-10-09 Nippon Steel Corp 片面凝固式連続鋳造装置
JPS63183747A (ja) * 1987-01-24 1988-07-29 Sumitomo Metal Ind Ltd 溶融金属からの薄帯連続鋳造装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0776895B2 (ja) * 1984-11-06 1995-08-16 セイコーエプソン株式会社 携帯用小型機器

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1031135A (fr) * 1951-01-18 1953-06-19 Procédé perfectionné de moulage des métaux
JPS58151949A (ja) * 1982-03-05 1983-09-09 Sumitomo Metal Ind Ltd 浸漬ノズルの詰り防止方法
JPS58224045A (ja) * 1982-06-22 1983-12-26 Nippon Steel Corp 溶鋼の低温連続鋳造方法
JPS60130455A (ja) * 1983-12-20 1985-07-11 Kawasaki Steel Corp 急冷薄板の製造方法
JPS62230458A (ja) * 1986-04-01 1987-10-09 Nippon Steel Corp 片面凝固式連続鋳造装置
JPS63183747A (ja) * 1987-01-24 1988-07-29 Sumitomo Metal Ind Ltd 溶融金属からの薄帯連続鋳造装置

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 454 (M - 769) 29 November 1988 (1988-11-29) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 91 (M - 679) 24 March 1988 (1988-03-24) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 271 (M - 260) 3 December 1983 (1983-12-03) *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 80 (M - 289) 12 April 1984 (1984-04-12) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 290 (M - 430) 16 November 1985 (1985-11-16) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997047413A1 (de) * 1996-06-07 1997-12-18 Salzgitter Ag Bandgiessanlage
AU722254B2 (en) * 1996-06-07 2000-07-27 Mannesmann Aktiengesellschaft Strip casting plant
AU722254C (en) * 1996-06-07 2001-10-25 Mannesmann Aktiengesellschaft Strip casting plant
CZ297654B6 (cs) * 1996-06-07 2007-02-21 Mannesmann Ag Zarízení pro pásové lití
WO1999059749A1 (de) * 1998-05-15 1999-11-25 Sms Demag Ag Verfahren und vorrichtung zum abziehen eines metallstranges
US11027330B2 (en) 2016-08-10 2021-06-08 Nucor Corporation Method of thin strip casting

Also Published As

Publication number Publication date
JPH06238398A (ja) 1994-08-30
CN1089529A (zh) 1994-07-20
CA2110625A1 (en) 1994-06-05
CN1057032C (zh) 2000-10-04
DE4240849A1 (de) 1994-06-09

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