EP0218855A1 - Procédé et appareil de coulée continue - Google Patents

Procédé et appareil de coulée continue Download PDF

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Publication number
EP0218855A1
EP0218855A1 EP86111710A EP86111710A EP0218855A1 EP 0218855 A1 EP0218855 A1 EP 0218855A1 EP 86111710 A EP86111710 A EP 86111710A EP 86111710 A EP86111710 A EP 86111710A EP 0218855 A1 EP0218855 A1 EP 0218855A1
Authority
EP
European Patent Office
Prior art keywords
mold
continuous casting
gas
overhang
mould
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.)
Granted
Application number
EP86111710A
Other languages
German (de)
English (en)
Other versions
EP0218855B1 (fr
Inventor
Wolfgang Dr. Dipl.-Ing. Schneider
Kurt Krämer
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.)
Vereinigte Aluminium Werke AG
Original Assignee
Vereinigte Aluminium 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 Vereinigte Aluminium Werke AG filed Critical Vereinigte Aluminium Werke AG
Priority to AT86111710T priority Critical patent/ATE47544T1/de
Publication of EP0218855A1 publication Critical patent/EP0218855A1/fr
Application granted granted Critical
Publication of EP0218855B1 publication Critical patent/EP0218855B1/fr
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
    • B22D11/07—Lubricating 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
    • B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
    • B22D11/0401—Moulds provided with a feed head

Definitions

  • the invention relates to a process for continuous casting in a continuous casting mold with a mold attachment, the inner wall of which projects to form an overhang over the inner wall of the continuous casting mold, in which the inner wall of the continuous casting mold is cooled and lubricated, a gas under pressure such as air, nitrogen or inert gas is introduced into the continuous casting mold at the transition of the mold attachment into the mold cavity.
  • a gas under pressure such as air, nitrogen or inert gas
  • a method and a device of the type mentioned is known from DE-OS 27 34 388 (Showa).
  • the known method leads to reasonably smooth bar surfaces only under favorable conditions.
  • monitoring and regulating the pressure of gas and lubricating oil flow rate is required, as well as ongoing temperature measurement to set the casting parameters. In operation, this often leads to difficulties which are exacerbated by fluctuations in the metal level and changes in the metallostatic pressure during the casting process.
  • the object of the present invention is to avoid the disadvantages mentioned at the outset and to develop a method and a device for continuous casting, with which smooth and clean ingot surfaces can be achieved independently of the respective casting conditions.
  • the special surface quality is characterized by the prevention of glue points and reduction of surface segregation to a level which enables further processing without turning off the bar.
  • the mold tread below the overhang is absolutely smooth and free of bores, steps or grooves.
  • a laminar flow parallel to the mold running surface must be maintained so that the metal flowing in does not come into contact with the mold wall.
  • This effect is reinforced by the fact that a minimum distance of 2-5 mm is provided between the start-up block and the mold running surface and a negative pressure is generated in this intermediate space, preferably by the cooling water blown out at the mold outlet end (water jet pump effect).
  • FIG. 1 shows a cross section through the mold according to the invention.
  • the mold attachment which consists of a hot head 2 and a gas guide block 3 with a gas channel 13.
  • the mold 1 there is a bore 4 for the separating and / or lubricant and a channel 5 for water cooling.
  • An annular gap 6 is formed between the mold 1, the hot head 2 and the gas guide block 3, which runs parallel to the running surface 7 at least in the vicinity of the outlet opening. It is important that there are no shoulders, bores or grooves on the tread and in the exit area of the ring channel, so that an approximately laminar flow of the mixture of separating and / or lubricant and gas is made possible.
  • the gas is blown through the annular channel 6 into the space below the overhang 8 of the meniscal cavity 9.
  • the vacuum there generated by the water jet emerging from channel 5, provides for the formation of an annular gas / oil veil which completely shields the mold wall 7 from the liquid metal.
  • the method according to the invention is preferably applied to crack-sensitive alloy groups.
  • an embodiment for strands with a 10 inch diameter is given, the ratio of separating agent and gas being 3: 1000.
  • FIGS. 2 to 5 show further embodiments of the invention.
  • the mold attachment 22 in FIG. 2 is made in one piece.
  • the bore for the gas channel 14 is located in the mold attachment 22 and opens into a wide antechamber 15 between the overhang 8 and the mold running surface 7. This is where the mixture formation with the separating and / or lubricant that takes place from the bore 4 in the mold 1 takes place.
  • water 11 is blown out of the channel 5.
  • FIG. 3 A further variant of the device according to the invention is shown in FIG. 3.
  • the mold attachment is divided horizontally into two partial areas 22a, 22b.
  • the gas line 16 also extends in the upper part 22a in the direction of the strand withdrawal and is only interrupted by a chamber 22c for gas distribution.
  • the mold 1 has a support wall 12 for the secure positioning of the mold attachment 22a, b.
  • the remaining parts, such as lubricant bore 4 and anteroom 15 correspond to the embodiment according to FIG. 2.
  • a differently shaped gas guide block in the form of an insert 17 is provided between the mold 1 and the hot head 2.
  • an insert 18 is arranged between the mold 1 and the hot head 2 in a corresponding manner.
  • the gas line 19 is guided horizontally through the mold 1 and that and the insert part 18 into an antechamber 20, from which the gas reaches the annular gap 6.
  • the mixture with the lubricant, which is supplied via bore 4 is variable between 2 and 10 mm before the outlet of the annular gap opening. All other features correspond to the parts described in connection with the previous figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Coating With Molten Metal (AREA)
  • Toys (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP86111710A 1985-09-20 1986-08-23 Procédé et appareil de coulée continue Expired EP0218855B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111710T ATE47544T1 (de) 1985-09-20 1986-08-23 Verfahren und vorrichtung zum stranggiessen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3533517 1985-09-20
DE19853533517 DE3533517A1 (de) 1985-09-20 1985-09-20 Verfahren und vorrichtung zum stranggiessen

Publications (2)

Publication Number Publication Date
EP0218855A1 true EP0218855A1 (fr) 1987-04-22
EP0218855B1 EP0218855B1 (fr) 1989-10-25

Family

ID=6281441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111710A Expired EP0218855B1 (fr) 1985-09-20 1986-08-23 Procédé et appareil de coulée continue

Country Status (7)

Country Link
EP (1) EP0218855B1 (fr)
JP (1) JPH06104267B2 (fr)
AT (1) ATE47544T1 (fr)
AU (1) AU588369B2 (fr)
CA (1) CA1282220C (fr)
DE (2) DE3533517A1 (fr)
NO (1) NO167443C (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0449771A1 (fr) * 1990-03-26 1991-10-02 Alusuisse-Lonza Services Ag Alimentation contrôlée de métal en fusion dans des coquilles d'une installation de coulée continue automatique
GB2222792B (en) * 1988-09-14 1993-01-20 Showa Denko Kk Method for continuous casting a hollow metallic ingot and apparatus therefor
EP0566865A1 (fr) * 1992-04-15 1993-10-27 VAW Aluminium AG Système d'alimentation et de distribution pour gaz et fluide de lubrification pour un dispositif de coulée continue
US5343933A (en) * 1992-02-06 1994-09-06 Vaw Aluminium Ag Process and apparatus for continuously casting metals
FR2747060A1 (fr) * 1996-04-05 1997-10-10 Ugine Savoie Sa Procede de coulee continue des metaux et installation de coulee pour sa mise en oeuvre
FR2747063A1 (fr) * 1996-04-05 1997-10-10 Ugine Savoie Sa Lingotiere de coulee continue en charge verticale des metaux
FR2765126A1 (fr) * 1997-06-26 1998-12-31 Lorraine Laminage Procede de coulee de metal liquide dans un conduit comprenant au moins deux pieces refractaires
FR2766394A1 (fr) * 1997-07-23 1999-01-29 Ascometal Sa Reglage de la tete d'une lingotiere de coulee continue en charge des metaux
EP0941786A1 (fr) * 1998-03-13 1999-09-15 Honda Giken Kogyo Kabushiki Kaisha Procédé et dispositif de lubrification pour la coulée continue d'alliages de métaux légers
WO2002074471A1 (fr) * 2001-03-20 2002-09-26 Sms Demag Aktiengesellschaft Coquille de coulee continue pour metaux liquides, notamment pour acier liquide
WO2005042185A1 (fr) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Procede et dispositif de coulee continue de metal
CN109014090A (zh) * 2018-08-31 2018-12-18 苏州铭恒金属科技有限公司 一种7系铝合金圆棒的热顶铸造工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0741389B2 (ja) * 1987-10-02 1995-05-10 日本軽金属株式会社 鋳塊の半連続鋳造法及び鋳造装置
US5052469A (en) * 1988-09-20 1991-10-01 Showa Denko Kabushiki Kaisha Method for continuous casting of a hollow metallic ingot and apparatus therefor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143475A (en) * 1965-07-24 1969-02-19 Vaw Ver Aluminium Werke Ag Method of continuously horizontally or vertically casting thin bands, plates or the like
DE1814658A1 (de) * 1967-12-22 1969-07-17 United States Steel Corp Stranggiesskokille
US4157728A (en) * 1976-07-29 1979-06-12 Showa Denko Kabushiki Kaisha Process for direct chill casting of metals
GB2129344A (en) * 1982-10-20 1984-05-16 Wagstaff Engineering Inc Direct chill casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143475A (en) * 1965-07-24 1969-02-19 Vaw Ver Aluminium Werke Ag Method of continuously horizontally or vertically casting thin bands, plates or the like
DE1814658A1 (de) * 1967-12-22 1969-07-17 United States Steel Corp Stranggiesskokille
US4157728A (en) * 1976-07-29 1979-06-12 Showa Denko Kabushiki Kaisha Process for direct chill casting of metals
US4157728B1 (fr) * 1976-07-29 1987-06-09
GB2129344A (en) * 1982-10-20 1984-05-16 Wagstaff Engineering Inc Direct chill casting

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222792B (en) * 1988-09-14 1993-01-20 Showa Denko Kk Method for continuous casting a hollow metallic ingot and apparatus therefor
EP0449771A1 (fr) * 1990-03-26 1991-10-02 Alusuisse-Lonza Services Ag Alimentation contrôlée de métal en fusion dans des coquilles d'une installation de coulée continue automatique
US5170838A (en) * 1990-03-26 1992-12-15 Alusuisse-Lonza Services Ltd. Program-controlled feeding of molten metal into the dies of an automatic continuous casting plant
US5343933A (en) * 1992-02-06 1994-09-06 Vaw Aluminium Ag Process and apparatus for continuously casting metals
EP0566865A1 (fr) * 1992-04-15 1993-10-27 VAW Aluminium AG Système d'alimentation et de distribution pour gaz et fluide de lubrification pour un dispositif de coulée continue
US5320159A (en) * 1992-04-15 1994-06-14 Vaw Aluminum Ag Continuous casting apparatus having gas and mold release agent supply and distribution plate
WO1997037792A1 (fr) * 1996-04-05 1997-10-16 Ugine Savoie Lingotiere de coulee continue en charge verticale des metaux
FR2747063A1 (fr) * 1996-04-05 1997-10-10 Ugine Savoie Sa Lingotiere de coulee continue en charge verticale des metaux
FR2747060A1 (fr) * 1996-04-05 1997-10-10 Ugine Savoie Sa Procede de coulee continue des metaux et installation de coulee pour sa mise en oeuvre
WO1997037795A1 (fr) * 1996-04-05 1997-10-16 Ugine Savoie Procede et installation de coulee continue des metaux
US6109335A (en) * 1996-04-05 2000-08-29 Ugine Savoie Ingot mould for the continuous vertical casting of metals
FR2765126A1 (fr) * 1997-06-26 1998-12-31 Lorraine Laminage Procede de coulee de metal liquide dans un conduit comprenant au moins deux pieces refractaires
FR2766394A1 (fr) * 1997-07-23 1999-01-29 Ascometal Sa Reglage de la tete d'une lingotiere de coulee continue en charge des metaux
WO1999004918A1 (fr) * 1997-07-23 1999-02-04 Ascometal Procede et dispositif pour la coulee continue en charge des metaux
EP0941786A1 (fr) * 1998-03-13 1999-09-15 Honda Giken Kogyo Kabushiki Kaisha Procédé et dispositif de lubrification pour la coulée continue d'alliages de métaux légers
US6840303B1 (en) 1998-03-13 2005-01-11 Honda Giken Kogyo Kabushiki Kaisha Process for continuously casting light alloy and apparatus for continuously casting light alloy
WO2002074471A1 (fr) * 2001-03-20 2002-09-26 Sms Demag Aktiengesellschaft Coquille de coulee continue pour metaux liquides, notamment pour acier liquide
WO2005042185A1 (fr) * 2003-10-17 2005-05-12 Loi Thermprocess Gmbh Procede et dispositif de coulee continue de metal
CN109014090A (zh) * 2018-08-31 2018-12-18 苏州铭恒金属科技有限公司 一种7系铝合金圆棒的热顶铸造工艺

Also Published As

Publication number Publication date
AU588369B2 (en) 1989-09-14
AU6294686A (en) 1987-03-26
DE3666549D1 (en) 1989-11-30
JPS6268657A (ja) 1987-03-28
JPH06104267B2 (ja) 1994-12-21
EP0218855B1 (fr) 1989-10-25
ATE47544T1 (de) 1989-11-15
NO167443C (no) 1991-11-06
NO863097L (no) 1987-03-23
NO167443B (no) 1991-07-29
DE3533517A1 (de) 1987-04-02
NO863097D0 (no) 1986-07-31
CA1282220C (fr) 1991-04-02

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