EP0213049B1 - Verfahren und Vorrichtung zum Giessen von Metallen - Google Patents

Verfahren und Vorrichtung zum Giessen von Metallen Download PDF

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Publication number
EP0213049B1
EP0213049B1 EP86420206A EP86420206A EP0213049B1 EP 0213049 B1 EP0213049 B1 EP 0213049B1 EP 86420206 A EP86420206 A EP 86420206A EP 86420206 A EP86420206 A EP 86420206A EP 0213049 B1 EP0213049 B1 EP 0213049B1
Authority
EP
European Patent Office
Prior art keywords
ingot mould
metal
feeder head
ring
mold
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
Application number
EP86420206A
Other languages
English (en)
French (fr)
Other versions
EP0213049A1 (de
Inventor
Georges Apostolou
Sotiris Armaos
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
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
Priority claimed from FR8512054A external-priority patent/FR2585597B1/fr
Application filed by Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to AT86420206T priority Critical patent/ATE36477T1/de
Publication of EP0213049A1 publication Critical patent/EP0213049A1/de
Application granted granted Critical
Publication of EP0213049B1 publication Critical patent/EP0213049B1/de
Expired 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
    • B22D11/0401—Moulds provided with a feed head
    • 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
    • B22D11/049—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for direct chill casting, e.g. electromagnetic casting

Definitions

  • the invention relates to a method and to a device for casting metals, in particular aluminum or one of its alloys, into charge.
  • this reserve also called enhancement or "HOT-TOP according to the Anglo-Saxon designation has found its interest in the search for a good surface condition, especially on billets.
  • the methods using an enhancement have been particularly developed in the case of multiple flow castings where they allow, with a single level adjustment, to lead the casting into several tens of molds at the same time.
  • This process is characterized in that an inert gas pressure is applied to the lower part of the periphery of the riser throughout the duration of the casting.
  • the inert gas is believed to prevent the ingress of ambient air at the bottom of the riser.
  • the elements are mounted as follows: the lower riser rests on a shoulder which is provided with the upper part of the mold.
  • the nuts also contribute to pressing the clamping ring against the lower riser and thus subjecting it to a higher stress the higher the tightening rate of the nuts.
  • the clamping ring is provided with a flange which is fixed on a shoulder placed at the upper part of the mold. by means of screws and that said ingot mold is made integral with the base plate by at least four diametrically opposite springs two by two integral with a clamping bar.
  • a lower riser-ingot mold-clamping ring assembly is formed which can be separated as a whole from the base plate. This assembly also makes it possible to maintain constant and independent of the tightening of the ingot mold fixing on the base plate the pressure stress exerted on the lower riser.
  • this assembly into the device is done simply: it is applied against the base plate and the upper part of the riser by means of a seal and maintains it in this position by means of elastic strips. This shortens the disassembly and reassembly times.
  • FIGS. 1 and 3 represent in section along a vertical axis a half-section of the casting device.
  • an extension consisting of an upper part (1) connected to a lower part (2) via a seal (3).
  • the part (2) is placed overhanging (4) relative to the graphite ring (5) of the mold (6) cooled externally by the coolant fluid from (7a).
  • This assembly is held integral by means of a clamping ring (8) and nuts (9) which fix the mold on a base plate (10).
  • the bottom of the part (2) is surrounded on its entire periphery by a ring (13) so as to form an annular chamber (11) which is supplied with inert gas via a pipe (12).
  • Figure 2 differs from Figure 1 in that the mold is cooled by means of a system (7b) generally called "water jacket •.
  • the ring is formed by a portion of the ingot mold which corresponds to a particular embodiment of the invention since this ring can be distinct from the ingot mold.
  • the clamping ring (8a) is provided with a flange (14) which is fixed on a shoulder (15) placed at the upper part of the mold (6) by means of screws (16) and said mold is made integral with the base plate (10) by the pressure of at least four springs (17) diametrically opposite two by two and integral with the clamping bar (18).
  • Disassembly and reassembly of such a device requires almost 15 times less time than for a device of the prior art.
  • the replacement rate of the extensions due to disassembly is practically zero.
  • the gas supply line was vented.
  • the pipe was connected to a source of dry nitrogen so as to maintain a pressure of 0.024 MPa, while the other casting parameters were kept identical to those of the first test. It was found that the billet obtained during the first test had numerous pits on its surface while that of the second test was completely free.
  • the method and the device according to the invention can be applied in particular in multiple ingot mold installations for billet casting with reduced labor and without any risk of adjustment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Pinball Game Machines (AREA)

Claims (4)

1. Verfahren zum Stranggießen von Metallen in eine Kokille mit beweglichem Boden, die innen mit einem Graphitring ausgekleidet ist, die man äußerlich kühlt und deren Wand im Kontakt mit dem Metall man anfänglich geschmiert hat, umfassend die folgenden Schritte :
- Speichern des geschmolzenen Metalls in einem Aufsatz mit einem oberen Teil (1) und einem unteren Teil (2), der angrenzend oberhalb der Kokille (6) angeordnet ist, welcher Aufsatz eine Vorragung (4) gegenüber der inneren Wand der Kokille aufweist,
- Speisen der Kokille mit geschmolzenem Metall aus dem Aufsatz,
- Halten einer Metallmasse in der Kokille derart, daß durch einen Kühlmittelfluidstrom an der Außenseite der Kokille und über dem Metall eine ausreichende Erstarrung der Masse hervorgerufen wird, um durch den Boden die Abführung von Metall in einer der der Kokille entsprechenden Form zu ermöglichen, dadurch gekennzeichnet, daß man einen Inertgasdruck auf den Umfang des unteren Teils des Aufsatzes während der gesamten Dauer des Gießens einwirken läßt.
2. Verfahren nach dem Anspruch 1, dadurch gekennzeichnet, daß der Druck ausreichend ist, um den Umfang unter Abschluß von der Atmosphäre zu halten, ohne den Wert zu überschreiten, oberhalb dessen das Gas an der Oberfläche des Metalls für den Oberflächenzustand nachteilige Wirbel hervorrufen würde.
3. Vorrichtung zum Gießen von Metall der Art, die aufweist ;
- eine Kokille (6) mit beweglichem Boden, die außen mit Mitteln (7) zum Zuführen eines Kühlmittelfluids und innen mit einem Graphitring (5) ausgerüstet ist, und
- einem Aufsatz, der angrenzend oberhalb der Kokille und gegenüber dieser vorragend angeordnet und an die obere Fläche dieser Kokille angepreßt ist, dadurch gekennzeichnet,
- daß der Aufsatz aus zwei Teilen (1 und 2) zusammengesetzt ist, die untereinander mittels einer Dichtung verbunden sind,
- der untere Teil (2) über seinem ganzen Umfang von einem Klemmring (8) und von einem Ring (13) umgeben ist, der ihn von der Atmosphäre isoliert und dessen Durchmesser größer als der größte Außendurchmesser dieses Teils derart ist, daß um diesen Teil und auf wenigstens einen Teil seiner Höhe eine ringförmige Kammer (11) gebildet wird, und
- diese Kammer in Verbindung mit einer Druckgasquelle mittels einer Zuführleitung (12) ist.
4. Vorrichtung zum Gießen von Metall nach dem Anspruch 3, dadurch gekennzeichnet, daß zwecks Erleichterung der Montage und der Demontage der Vorrichtung der Klemmring (8a) mit einem Flansch (14) ausgebildet ist, der an einer im oberen Teil der Kokille (6) angeordneten Schulter (15) mittels Schrauben (16) befestigt ist, und daß die Kokille an der Basisplatte (10) durch wenigstens vier Federn (17) befestigt ist, von denen je zwei diametral gegenüberliegen und an der Klemmstange (18) befestigt sind.
EP86420206A 1985-07-30 1986-07-28 Verfahren und Vorrichtung zum Giessen von Metallen Expired EP0213049B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86420206T ATE36477T1 (de) 1985-07-30 1986-07-28 Verfahren und vorrichtung zum giessen von metallen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8512054A FR2585597B1 (fr) 1985-07-30 1985-07-30 Procede et dispositif de coulee en charge de metaux
FR8512054 1985-07-30
FR8608427A FR2599650B2 (fr) 1985-07-30 1986-06-06 Dispositif de coulee en charge de metaux
FR8608427 1986-06-06

Publications (2)

Publication Number Publication Date
EP0213049A1 EP0213049A1 (de) 1987-03-04
EP0213049B1 true EP0213049B1 (de) 1988-08-17

Family

ID=26224662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86420206A Expired EP0213049B1 (de) 1985-07-30 1986-07-28 Verfahren und Vorrichtung zum Giessen von Metallen

Country Status (12)

Country Link
US (1) US4732209A (de)
EP (1) EP0213049B1 (de)
CN (1) CN86105689A (de)
AU (1) AU575533B2 (de)
BR (1) BR8603584A (de)
DE (1) DE3660527D1 (de)
ES (1) ES2000578A6 (de)
FR (1) FR2599650B2 (de)
GR (1) GR861993B (de)
NO (1) NO863069L (de)
NZ (1) NZ216997A (de)
YU (1) YU123986A (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623113B1 (fr) * 1987-11-13 1990-02-09 Pechiney Aluminium Dispositif de coulee en charge a grand nombre de lingotieres de billettes metalliques de diametres multiples
US5119883A (en) * 1989-08-14 1992-06-09 Wagstaff Engineering Incorporated Apparatus and process for direct cooling an emerging ingot with gas-laden coolant
US5040595A (en) * 1989-08-14 1991-08-20 Wagstaff Engineering Incorporated Means and technique for direct cooling an emerging ingot with gas-laden coolant
IT1231824B (it) * 1989-09-05 1992-01-14 Aluminia Spa Apparecchiatura per la colata semicontinua in acque delle leghe leggere, strutturata in modo da eliminare rischi di esplosione.
AT395390B (de) * 1990-03-01 1992-12-10 Metatherm Metallurg Thermische Verfahren zum stranggiessen von insbesondere ne-metallen und kokillenaggregat zur durchfuehrung dieses verfahrens
NO171303C (no) * 1990-09-21 1993-02-24 Norsk Hydro As Fremgangsmaate og anordning for hot-top stoeping av reaktive metaller
FR2690099B1 (fr) * 1992-04-16 1997-05-23 Pechiney Aluminium Procede de coulee en charge permettant d'eviter la fissuration de la rehausse.
NO302804B1 (no) * 1995-09-08 1998-04-27 Norsk Hydro As Utstyr for horisontal direktekjölt stöping av lettmetaller, spesielt magnesium og magnesiumlegeringer
FR2747061B1 (fr) * 1996-04-05 1998-04-30 Ugine Savoie Sa Lingotiere bi-materiau pour la coulee continue en charge verticale des metaux
FR2747062B1 (fr) * 1996-04-05 1998-04-30 Ugine Savoie Sa Lingotiere de coulee continue pour la coulee continue en charge verticale des metaux
US7204295B2 (en) * 2001-03-30 2007-04-17 Maerz-Gautschi Industrieofenanlagen Gmbh Mold with a function ring
DE10115999C2 (de) * 2001-03-30 2003-08-14 Vaw Ver Aluminium Werke Ag Kokille mit Funktionsring
LU91086B1 (en) * 2004-06-25 2005-12-27 Sms Demag Ag Continous casting mould wit oscillation device.
US7000676B2 (en) * 2004-06-29 2006-02-21 Alcoa Inc. Controlled fluid flow mold and molten metal casting method for improved surface
CN100418667C (zh) * 2006-05-19 2008-09-17 苏州有色金属加工研究院 铝及铝合金半连铸连续润滑结晶器
CN101342586B (zh) * 2007-10-22 2015-04-22 冬燕 钢水真空溢流法浇铸多支钢锭的设备和工艺
CN107470573B (zh) * 2017-08-08 2020-05-05 江苏亚太航空科技有限公司 油气润滑结晶器
CN108061473B (zh) * 2017-12-04 2019-10-11 珠海格力电器股份有限公司 一种换热器制作方法及换热器

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364776A (fr) * 1963-05-17 1964-06-26 Trefimetaux Perfectionnements apportés à la coulée continue ou semi-continue des métaux et alliages
NO115409B (de) * 1963-06-07 1968-09-30 Aluminum Co Of America
CA1082875A (en) * 1976-07-29 1980-08-05 Ryota Mitamura Process and apparatus for direct chill casting of metals
GR65264B (en) * 1978-02-18 1980-07-31 British Aluminium Co Ltd Metal casting
DE2914246C2 (de) * 1979-03-07 1981-11-12 Schweizerische Aluminium AG, 3965 Chippis Elektromagnetische Stranggießkokille
DE3008781C2 (de) * 1980-03-07 1982-08-26 Herbert Dipl.-Ing. 5870 Hemer Woithe Verfahren zum Stranggießen von Metallen
GB2082950B (en) * 1980-09-02 1984-06-20 British Aluminium The Co Ltd Apparatus for direct chill casting of aluminium
US4597432A (en) * 1981-04-29 1986-07-01 Wagstaff Engineering, Inc. Molding device
US4598763A (en) * 1982-10-20 1986-07-08 Wagstaff Engineering, Inc. Direct chill metal casting apparatus and technique
GB2129344B (en) * 1982-10-20 1986-11-19 Wagstaff Engineering Inc Direct chill casting
CH663165A5 (de) * 1983-08-24 1987-11-30 Lauener Eng Ag Giessmaschine zum stranggiessen von metall und verfahren zu deren betrieb.
DE3340844C1 (de) * 1983-11-11 1984-12-20 Mannesmann AG, 4000 Düsseldorf Stranggiesskokille mit Kuehleinrichtung fuer das Vergiessen von Metall,insbesondere von Stahl
JPH0635030B2 (ja) * 1984-07-27 1994-05-11 昭和電工株式会社 金属の水平連続鋳造方法および装置

Also Published As

Publication number Publication date
BR8603584A (pt) 1987-03-04
AU6066786A (en) 1987-02-05
US4732209A (en) 1988-03-22
NZ216997A (en) 1989-01-06
NO863069D0 (no) 1986-07-29
ES2000578A6 (es) 1988-03-01
DE3660527D1 (en) 1988-09-22
FR2599650B2 (fr) 1988-08-26
EP0213049A1 (de) 1987-03-04
GR861993B (en) 1986-09-25
CN86105689A (zh) 1987-02-04
NO863069L (no) 1987-02-02
FR2599650A2 (fr) 1987-12-11
AU575533B2 (en) 1988-07-28
YU123986A (en) 1988-12-31

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