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WO2011056078A1 - Agencement de remplissage de métal pour équipement de coulée continue - Google Patents

Agencement de remplissage de métal pour équipement de coulée continue Download PDF

Info

Publication number
WO2011056078A1
WO2011056078A1 PCT/NO2010/000403 NO2010000403W WO2011056078A1 WO 2011056078 A1 WO2011056078 A1 WO 2011056078A1 NO 2010000403 W NO2010000403 W NO 2010000403W WO 2011056078 A1 WO2011056078 A1 WO 2011056078A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
mould
box
casting
filling box
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.)
Ceased
Application number
PCT/NO2010/000403
Other languages
English (en)
Inventor
Arild HÅKONSEN
Jr. Harald Naess
Terje Iveland
John Olav Fagerlie
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.)
Norsk Hydro ASA
Original Assignee
Norsk Hydro ASA
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 Norsk Hydro ASA filed Critical Norsk Hydro ASA
Priority to CN201080049943.3A priority Critical patent/CN102665965B/zh
Priority to EP10828596.6A priority patent/EP2496373B1/fr
Publication of WO2011056078A1 publication Critical patent/WO2011056078A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B22D11/10—Supplying or treating molten metal
    • B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors

Definitions

  • the present invention relates to metal filling equipment for continuous casting moulds, in particular moulds for the semi-continuous direct chill (DC) casting of aluminium sheet ingot or slabs of different dimensions.
  • DC direct chill
  • Moulds of the above type includes a mould frame with a pair of facing side walls and a pair of facing end walls, the walls defining a mould with an upwardly open inlet for the supply of metal and a downwardly facing outlet provided with a starter block on a movable support to extend the ingot to be cast and which prior to each casting closes the downwardly facing opening.
  • the equipment further includes means for cooling the metal during casting.
  • metal is usually supplied to the mould from a holding furnace by means of a launder or open supply channel.
  • the furnace is tilted depending on the number of casting moulds, casting velocity etc. and thereby the amount of metal required to maintain the level in the launder is supplied in a controllable manner.
  • the metal level in the casting mould on the other hand is commonly controlled by means of a spout and stopper where the stopper in turn is activated and controlled by a float (Early solution) or an electric actuator.
  • EP-A- 995523 is known a filling system for continuous casting equipment for aluminium sheet ingot where metal is transported to the casting mould from an furnace by means of a launder system and where a measuring apparatus for determining a metal melt level and a through flow regulator to control the metal supply in the mould depending on the difference of a pre-described theoretical value progression and the measured time-dependent metal melt level.
  • the measuring apparatus consists of two physically different working measuring systems each with a separate sensor fixed in a predetermined position with respect to the mould.
  • EP-B1 1648635 shows a low pressure continuous casting system where metal is transported from a holding furnace to the mould via a closed siphon type channel and where the metal level is controlled in the mould such that the metallostatic pressure is basically zero in the solidification zone.
  • a metal filling equipment for continuous casting moulds in particular equipment for the semi-continuous direct chill (DC) casting of aluminium sheet ingots or slabs which is cheap and simple to manufacture and use and which has excellent metal distribution, is reliable as regards metal level control and has low maintenance costs.
  • the equipment may easily be adapted to existing casting moulds (retrofit installations) as well as greenfield installations.
  • the invention is characterized by the features as defined in the attached independent claim 1.
  • Fig. 1 shows a schematic view of a filling apparatus and mould for casting sheet ingot of the conventional type with spout and stopper, seen in perspective,
  • Fig. 2 shows a cross section along one of the moulds of the same apparatus as shown in Fig. 1
  • Fig. 3 shows a perspective view of a casting apparatus with four mould and with a filling arrangement according to the present invention
  • Fig. 4 shows a cross section of the casting apparatus and filling arrangement along of one of the moulds shown in Fig. 3,
  • FIGs. 5 - 11 show the same as in Fig. 4, but in smaller scale and in a sequence from start to end of a casting operation.
  • a conventional known apparatus 1 for casting aluminium sheet ingot may, as is shown in Figs. 1 and 2, consist of one or more moulds 2.
  • An insulated launder or channel (not shown) is provided to transport hot liquid aluminium metal 8 from a holding furnace (not shown) to an insulated 9 distributor launder 3 provided above the moulds 2.
  • Metal is, during casting, supplied to the moulds 2 through a spout 5 and stopper 4 arrangement.
  • the opening and closing of the stopper 4 and thereby the amount of metal supplied to the moulds 2 is accomplished by an actuator 6 on the basis of signals from a metal level detector 7, striving to maintain the metal level in the mould at a desired constant height.
  • the present invention is based on a quite different solution which will be further described in the following.
  • Figs. 3 and 4 shows casting equipment 1 according to the invention including four casting moulds 2 for sheet ingot.
  • Each mould 2 is equipped with indirect and direct water cooling arrangements (not shown) and are provided in a common frame construction (neither not shown).
  • the equipment is provided with a closed metal filling box or container 10.
  • the box 10 is preferably provided on a separate frame construction (not shown) above the moulds 2.
  • For each mould metal distributor outlets in the form of insulated pipe stubs 18 are protruding downwardly from the container 10.
  • at least two pipe stubs 18 are provided for each mould.
  • a Iid17 is further provided in a sealing relation on top of the filling box 10 and is attached to it by means of a hinge 19 to obtain easy access for cleaning and maintenance.
  • Metal is supplied to the filling box 10 by means of a launder 1 from a holding furnace (not shown) and is admitted to the filling box through an inlet being controlled by a valve device 16 in the form of a stopper plug (spindle) 14 and seat 5.
  • the stopper 14 of the valve device 16 is in turn controlled by means of an electrically driven actuator 13 based on signals from a PLC control device (see later section).
  • a vacuum valve 20 with a hose connector (not shown) for connection to a vacuum source, whereby the hollow space 24 of the box may be set with a pressure (vacuum) below the atmospheric pressure.
  • the filling box as such is hinged to the frame construction at the connection 21 with the launder 1 and is thereby tiltable upwards in relation to the casting moulds 2 (see later section).
  • a dam or gate closure 22 is provided in the launder 11 up-stream of the filling box to hold back the metal from the holding furnace in an initial phase of the casting operation. Further, a metal level detector 23 is provided in relation to the mould/s to detect the metal level providing signals to a Programmable Logic Control (PLC - not shown) that controls the complete casting operation from beginning to end.
  • PLC Programmable Logic Control
  • the filling box as described above may be designed to supply metal to one, two or more casting moulds 2.
  • only one detector 23 for detecting the metal level in the moulds and only valve device for the control of the metal flow to the metal fillings box and the moulds is needed for the filling operation.
  • the equipment according to the invention is quite simple and cheap to manufacture and operate.
  • Figs. 5 - 13 show in cross sections of one of the moulds with the filling box 10 according to the invention in a sequence from the start to the end of a casting operation.
  • Fig. 5 shows the initial starting point of a casting operation where the mould 2 is ready for casting as the mould starter block 25 is in its upper position resting against the mould wall 26.
  • the holding furnace (not shown) is already tilted whereby liquid melt is filled in the launder 11 and is closed off by the dam 22 being in a lower position.
  • Fig. 6 shows a further step where the dam 22 of the launder 11 is lifted and the stopper 14 for the valve device 16 is open to enable metal entering the filling box 10.
  • the metal starts filling up the starter block 25 and the level in the box 10 is raised to the lower end of the metal distributor pipe stubs 8. At this point the pressure outside the box 10 and inside it is the same, atmospheric pressure.
  • the PLC initiates opening of the vacuum valve 20 and air is evacuated from the hollow space of the filling box 0.
  • the metal level will now raise inside the filling box to a desired level above the level in the launder 1 1 to obtain sufficient charge and even distribution of metal to the moulds.
  • the desired metal level in the mould/s is maintained and controlled by the flow of metal through the valve device 16 and stopper 14, as well as the pressure inside the metal filling box 10.
  • the starter block 25 As soon as the metal 27has reached its upper desired level the starter block 25 at the same time starts moving downwards as is shown in Fig. 7, and the cast aluminium ingot 28 is formed by solidification of the melted metal 27.
  • the stopper 14 based on signals from the PLC, closes and the metal flow to the filling box 10 is stopped. At the same time the vacuum inside the filling box is cotrolled such that the pressure inside the box approaches atmospheric pressure.
  • the PLC is programmed to calculate when to close the stopper 14 in relation to the remaining metal in the filling box 10 and the needed amount of metal to complete the casting operation such that no melt is left in the filling box or pipe stubs 18 when the ingot is fully cast.
  • the metal being left in the launderl 1 is tapped to a crucible through a hole in the launder, as shown in Fig. 9, by removing a plug therein (not shown), or preferably, the melt is transferred back to the furnace.
  • the filling box 10 is tilted upwards about the hinge connection 21 as shown in Fig. 10 and the remaining metal is tapped from the launder as well as the filling box as the stopper 14 now also is opened. By doing this the filling box is drained such that freezing of metal in and around the piping stubs is prevented.
  • Fig. 1 shows the final position of the equipment after casting and prior to a new casting operation where the lid 17 is opened about the hinge 19 and the filling box is ready for cleaning and inspection and possible maintenance.
  • the equipment as described above has several advantages:
  • the metal filling box may be designed to supply metal to more or less than four casting moulds.
  • the lid 17 may not be hinged to the equipment, but may be just lifted off after each casting operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Continuous Casting (AREA)

Abstract

La présente invention concerne un équipement de remplissage de métal pour une ou des coquilles de coulée continue, en particulier une ou des coquilles pour la coulée semi-continue (DC) de lingot ou de brames de feuilles d'aluminium de différentes dimensions, en particulier un lingot ou des brames pour laminer de fines feuilles ou bandes d'aluminium. L'équipement comprend une boîte ou un contenant de remplissage de métal fermé(e) (10) prévu(e) au-dessus de la ou des coquilles (2). La boîte reçoit le métal du four de maintien (non représenté) à travers un canal de coulée ou un canal de transfert de métal (11). L'écoulement de métal jusqu'à la boîte est régulé au moyen d'un dispositif de vanne (16), grâce auquel la boîte de remplissage de métal est pourvue de moyens d'évacuation d'air (20) pour obtenir un niveau de métal élevé à l'intérieur de la boîte lors de la coulée. Les sorties du distributeur de métal sous la forme de tronçons de conduite isolés (18) sont prévues sur chaque coquille, faisant saillie vers le bas depuis le fond de la boîte de remplissage de métal (10). La boîte de remplissage de métal décrite permet d'obtenir une meilleure distribution du métal et une température du métal homogène à travers la ou les coquilles.
PCT/NO2010/000403 2009-11-06 2010-11-05 Agencement de remplissage de métal pour équipement de coulée continue Ceased WO2011056078A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201080049943.3A CN102665965B (zh) 2009-11-06 2010-11-05 用于连续铸造设备的金属填充装置
EP10828596.6A EP2496373B1 (fr) 2009-11-06 2010-11-05 Agencement de remplissage de métal pour équipement de coulée continue

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20093305 2009-11-06
NO20093305A NO333382B1 (no) 2009-11-06 2009-11-06 Metallfyllingsarrangement for kontinuerlig stopeutstyr

Publications (1)

Publication Number Publication Date
WO2011056078A1 true WO2011056078A1 (fr) 2011-05-12

Family

ID=43970129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2010/000403 Ceased WO2011056078A1 (fr) 2009-11-06 2010-11-05 Agencement de remplissage de métal pour équipement de coulée continue

Country Status (4)

Country Link
EP (1) EP2496373B1 (fr)
CN (1) CN102665965B (fr)
NO (1) NO333382B1 (fr)
WO (1) WO2011056078A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430732A (zh) * 2011-11-29 2012-05-02 东北大学 内外双向冷却连铸镁合金和铝合金锭坯装置与工艺
WO2017007329A1 (fr) * 2015-07-03 2017-01-12 Norsk Hydro Asa Équipement pour coulée continue ou semi-continue de métal avec agencement de remplissage de métal amélioré
WO2018060246A1 (fr) * 2016-09-27 2018-04-05 Hydro Aluminium Rolled Products Gmbh Procédé de coulée multiple de barres métalliques

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103921074A (zh) * 2014-04-28 2014-07-16 明达铝业科技(太仓)有限公司 一种用于vvt上的阀体的锻造工艺
CN104148623B (zh) * 2014-07-14 2016-05-25 湖州织里荣华铝业有限公司 一种再生铝熔流槽
CN107116207A (zh) * 2017-06-20 2017-09-01 重庆科技学院 一种铁水接斗防溅装置
CN112548055A (zh) * 2020-12-11 2021-03-26 西南铝业（集团）有限责任公司 用于超宽幅铝合金扁锭的半连续铸造的装置和方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837614A (en) * 1973-06-12 1974-09-24 Femipari Kutato Intezet Casting apparatus with slidably mounted branch runners
US3865175A (en) * 1972-02-03 1975-02-11 Voest Ag Process for separating non-metallic inclusions from hot liquid metal
JPS5835051A (ja) * 1981-08-26 1983-03-01 Kawasaki Steel Corp 連続鋳造機におけるタンデイツシユ
JPS5838645A (ja) * 1981-08-31 1983-03-07 Kawasaki Steel Corp 連続鋳造における鋳型への給湯設備および給湯方法
WO1999032248A1 (fr) * 1997-12-19 1999-07-01 Sms Demag Ag Dispositif pour l'amenee de metal en fusion
WO2009072893A1 (fr) * 2007-12-03 2009-06-11 Norsk Hydro Asa Dispositif associé à un équipement pour un coulage continu ou semi-continu de métal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646707C3 (de) * 1976-10-13 1984-01-26 Mannesmann AG, 4000 Düsseldorf Tauchausguß aus feuerfestem Werkstoff für das Stranggießen von Stahl
JPS53138926A (en) * 1977-05-12 1978-12-04 Nippon Steel Corp Continuous casting method
DE3328586C2 (de) * 1983-08-08 1985-09-05 Didier-Werke Ag, 6200 Wiesbaden Feuerfeste Kanalverbindung für Horizontal-Stranggießanlagen
NO320254B1 (no) * 2003-06-30 2005-11-14 Norsk Hydro As Metode og utstyr for kontinuerlig eller semikontinuerlig stoping av metall

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865175A (en) * 1972-02-03 1975-02-11 Voest Ag Process for separating non-metallic inclusions from hot liquid metal
US3837614A (en) * 1973-06-12 1974-09-24 Femipari Kutato Intezet Casting apparatus with slidably mounted branch runners
JPS5835051A (ja) * 1981-08-26 1983-03-01 Kawasaki Steel Corp 連続鋳造機におけるタンデイツシユ
JPS5838645A (ja) * 1981-08-31 1983-03-07 Kawasaki Steel Corp 連続鋳造における鋳型への給湯設備および給湯方法
WO1999032248A1 (fr) * 1997-12-19 1999-07-01 Sms Demag Ag Dispositif pour l'amenee de metal en fusion
WO2009072893A1 (fr) * 2007-12-03 2009-06-11 Norsk Hydro Asa Dispositif associé à un équipement pour un coulage continu ou semi-continu de métal

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430732A (zh) * 2011-11-29 2012-05-02 东北大学 内外双向冷却连铸镁合金和铝合金锭坯装置与工艺
CN102430732B (zh) * 2011-11-29 2013-09-11 东北大学 内外双向冷却连铸镁合金和铝合金锭坯装置与工艺
WO2017007329A1 (fr) * 2015-07-03 2017-01-12 Norsk Hydro Asa Équipement pour coulée continue ou semi-continue de métal avec agencement de remplissage de métal amélioré
NO341337B1 (en) * 2015-07-03 2017-10-16 Norsk Hydro As Equipment for continuous or semi-continuous casting of metal with improved metal filling arrangement
US10500635B2 (en) 2015-07-03 2019-12-10 Norsk Hydro Asa Equipment for continuous or semi-continuous casting of metal with improved metal filling arrangement
WO2018060246A1 (fr) * 2016-09-27 2018-04-05 Hydro Aluminium Rolled Products Gmbh Procédé de coulée multiple de barres métalliques
JP2019532820A (ja) * 2016-09-27 2019-11-14 ハイドロ アルミニウム ロールド プロダクツ ゲゼルシャフト ミット ベシュレンクテル ハフツングＨｙｄｒｏ Ａｌｕｍｉｎｉｕｍ Ｒｏｌｌｅｄ Ｐｒｏｄｕｃｔｓ ＧｍｂＨ 金属ストランドの複数鋳造のための方法
US10549340B2 (en) 2016-09-27 2020-02-04 Hydro Aluminium Rolled Products Gmbh Method for multiple casting of metal strands

Also Published As

Publication number Publication date
CN102665965B (zh) 2016-06-15
NO20093305A1 (no) 2011-05-09
EP2496373A1 (fr) 2012-09-12
NO333382B1 (no) 2013-05-21
CN102665965A (zh) 2012-09-12
EP2496373A4 (fr) 2016-12-21
EP2496373B1 (fr) 2018-06-06

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