EP0859675B1 - A machine and a method for casting a metal strip - Google Patents

A machine and a method for casting a metal strip Download PDF

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Publication number
EP0859675B1
EP0859675B1 EP96927983A EP96927983A EP0859675B1 EP 0859675 B1 EP0859675 B1 EP 0859675B1 EP 96927983 A EP96927983 A EP 96927983A EP 96927983 A EP96927983 A EP 96927983A EP 0859675 B1 EP0859675 B1 EP 0859675B1
Authority
EP
European Patent Office
Prior art keywords
molten metal
belt
side walls
endless belt
casting
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
EP96927983A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0859675A1 (en
Inventor
Anders Holmberg
Allan Holmgren
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.)
SMS Siemag AG
Original Assignee
SMS Demag 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 SMS Demag AG filed Critical SMS Demag AG
Publication of EP0859675A1 publication Critical patent/EP0859675A1/en
Application granted granted Critical
Publication of EP0859675B1 publication Critical patent/EP0859675B1/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
    • B22D11/06—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
    • 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
    • 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

Definitions

  • This invention relates to a strip casting machine comprising a cooled and power driven endless belt with side dams, and an arrangement for supplying molten metal to the upper side of a flat and substantially horizontal part of the endless belt. It relates also to a method of casting a metal strip.
  • edges When casting strips, there will usually be edge drops, that is the edges will be thinner, so that the edges must be cut away.
  • the machine shown in Figure 1 has a substantially horizontal, water cooled, and power driven belt 11 of a heat conductive material for example copper.
  • the belt 11 has side dams 12, 13 which can be movable with the belt, but which can also be fixed. They can advantageously be movable laterally and fixed in various lateral positions so that strips of various width can be cast.
  • Above the belt there is a tundish 14 that functions as a distributor of molten metal. It has a number of ceramic nozzles distributed over the entire width of the belt so that they produce several separate jets that meet the belt 11 which moves as indicated by the arrow 15.
  • the orifices should be so located that the molten metal flows out and solidifies as a cast thin continuous strip 29 on the substrate, that is, on the movable belt 11.
  • a container 16 for example a furnace or a ladle, supplies a controlled flow of molten metal to the tundish/distributor 14.
  • the flow out of the container 16 can be regulated in various conventional ways, for example by means of a stopper rod or a sliding gate nozzle.
  • the Figures 3 and 4 show a design which is somewhat modified from the design shown in Figure 1.
  • the container is replaced by a rotatable tube 17 of the kind disclosed in WO 9301015.
  • the level of the molten metal in the tube 17 is kept constant by means of a non-illustrated regulator that regulates the supply of molten metal to the tube 17.
  • the tube 17 has an outlet 18 in the form of a slot and the flow out of the tube can be regulated by turning of the tube 17 since such turning changes the ferrostatic pressure that drives the flow out through the slot 18.
  • the tundish 14 has two fixed walls 20, 21 that slows down the flow in the tundish and make the flow laminar before it reaches orifices 22.
  • the endless belt 11 is cooled by a large number of cooling nozzles 23 that eject water jets against the underside of the belt 11 so that the molten metal solidifies on the copper belt into a cast continuous strip.
  • the endless belt 11 moves fast when the vertical and parallel jets 30 from the orifices 22 of the tundish meet the belt 11 and the molten metal does not wet the belt, the molten metal will not flow backwardly on the belt and a rear dam is therefore not necessary.
  • the molten metal should flow out on the belt 11 into an even layer and the distance between the jets 30 must therefore not be too big.
  • There is no contact between the tundish/distributor 14 and the belt 11 and the side dams 12, 13 of the belt which is advantageous particularly when a casting is ended or if a casting goes wrong, since the molten metal cannot freeze on the machine and prevent it from being started again.
  • the jets are shown vertical but they can also be inclined.
  • Another tundish/distributor can quickly and easily be exchanged for the one on the machine when one wants to cast strips of another width or one wants to change to a casting process that needs other orifices or another number of orifices since the tundish is neither coupled to the endless belt 11 nor to the container 16 or 17.
  • the number of orifices and their size need to be varied in relation to the combination of strip width, belt velocity, viscosity of the molten metal, and desired thickness of the strip.
  • the side dams 12, 13 form inwardly inclined walls.
  • a steel strip 29 is shown in Figure 1, which has been cast with the machine described. Because of the inward inclination of the side dams, the metal surface is horizontal along the lines in which solid matter (the dams), the molten metal, and gas (argon) meet. If the surfaces of the dams should instead be vertical, the surface would bend downwards at the edges since the molten metal does not wet the side dams.
  • the inclined dams in combination with the supply of molten metal in the form of separate jets make the upper surface of the strip very even. It will also be possible to cast thinner strips when the influence of the surface tension is counteracted in this way.
  • the inclination of the side walls of the dams 12,13 should be chosen so that it matches the angle of wetting in order to get a flat surface of the molten metal.
  • a cover is for example not shown.
  • the strip casting machine according to the invention can be made in different sizes and for various kinds of metals and alloys. It can for example be suited for fast casting of carbon steel in strip thicknesses down to 6 mm or less and for strip widths of up to 2 metres or more.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)
EP96927983A 1995-08-16 1996-08-16 A machine and a method for casting a metal strip Expired - Lifetime EP0859675B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9502867 1995-08-16
SE9502867A SE508311C2 (sv) 1995-08-16 1995-08-16 Sätt och anordning för att direktgjuta tunna metallband
PCT/SE1996/001020 WO1997006906A1 (en) 1995-08-16 1996-08-16 A machine and a method for casting a metal strip

Publications (2)

Publication Number Publication Date
EP0859675A1 EP0859675A1 (en) 1998-08-26
EP0859675B1 true EP0859675B1 (en) 2001-05-23

Family

ID=20399208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927983A Expired - Lifetime EP0859675B1 (en) 1995-08-16 1996-08-16 A machine and a method for casting a metal strip

Country Status (11)

Country Link
EP (1) EP0859675B1 (xx)
JP (1) JP3567225B2 (xx)
KR (1) KR100443113B1 (xx)
AT (1) ATE201341T1 (xx)
AU (1) AU6760596A (xx)
CA (1) CA2228180A1 (xx)
CZ (1) CZ44198A3 (xx)
DE (1) DE69612992T2 (xx)
SE (1) SE508311C2 (xx)
WO (1) WO1997006906A1 (xx)
ZA (1) ZA966913B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965239A (zh) * 2007-11-19 2011-02-02 Sms西马格股份公司 具有用于涂覆到浇注带上的装置的浇注设备
CN109248994A (zh) * 2017-08-19 2019-01-22 福建省长汀金龙稀土有限公司 一种薄带的铸造装置及薄带的铸造方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7033632B2 (en) * 2002-05-06 2006-04-25 Schreiber Foods, Inc. Casting food products to controlled dimensions
DE102008031476A1 (de) 2007-08-16 2009-02-19 Sms Demag Ag Gießvorrichtung
DE102009054218A1 (de) 2009-10-21 2011-05-19 Sms Siemag Ag Verfahren und Vorrichtung zur seitlichen Strömungsführung einer Metallschmelze beim Bandgießen
JP6037332B2 (ja) * 2013-03-18 2016-12-07 学校法人常翔学園 金属板の鋳造方法及び金属板鋳造装置
DE102014224236A1 (de) 2014-11-27 2016-06-02 Sms Group Gmbh Vorrichtung zum Bandgießen von metallischen Produkten
KR102033642B1 (ko) * 2017-12-11 2019-11-08 주식회사 포스코 용융물 처리 장치

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS571547A (en) * 1980-06-04 1982-01-06 Hitachi Ltd Rotary ring-one side belt type continuous casting device
US4694885A (en) * 1985-06-06 1987-09-22 Hitachi Zosen Corporation Apparatus for continuous casting of thin metallic plate
DE3707897A1 (de) * 1987-03-12 1988-09-22 Mannesmann Ag Verfahren und giessvorrichtung zum giessen von baendern aus metall, insbesondere aus stahl

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101965239A (zh) * 2007-11-19 2011-02-02 Sms西马格股份公司 具有用于涂覆到浇注带上的装置的浇注设备
CN109248994A (zh) * 2017-08-19 2019-01-22 福建省长汀金龙稀土有限公司 一种薄带的铸造装置及薄带的铸造方法

Also Published As

Publication number Publication date
JP3567225B2 (ja) 2004-09-22
SE9502867L (sv) 1997-02-17
AU6760596A (en) 1997-03-12
JPH11510739A (ja) 1999-09-21
EP0859675A1 (en) 1998-08-26
DE69612992D1 (de) 2001-06-28
KR100443113B1 (ko) 2004-09-18
ZA966913B (en) 1998-07-03
CA2228180A1 (en) 1997-02-27
WO1997006906A1 (en) 1997-02-27
SE9502867D0 (sv) 1995-08-16
CZ44198A3 (cs) 1998-07-15
DE69612992T2 (de) 2001-12-13
ATE201341T1 (de) 2001-06-15
SE508311C2 (sv) 1998-09-21
KR19990036374A (ko) 1999-05-25

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