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US3735799A - Device for continuous casting of metal - Google Patents

Device for continuous casting of metal Download PDF

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Publication number
US3735799A
US3735799A US00119776A US3735799DA US3735799A US 3735799 A US3735799 A US 3735799A US 00119776 A US00119776 A US 00119776A US 3735799D A US3735799D A US 3735799DA US 3735799 A US3735799 A US 3735799A
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US
United States
Prior art keywords
coil
ingot
flow
screen
coolant
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
US00119776A
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English (en)
Inventor
K K Karlson
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
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 ASEA AB filed Critical ASEA AB
Application granted granted Critical
Publication of US3735799A publication Critical patent/US3735799A/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
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • B22D11/015—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces using magnetic field for conformation, i.e. the metal is not in contact with a mould
    • 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

Definitions

  • ABSTRAT I 1 An electromagnetic field is produced in a flow of mol- [30] Foreign Application Priority Data ten metal by a coil surrounding the flow in order to establish forces in the flow. A coolant is applied to the Mar. 3, 1970 Sweden ..2740/70 solidifying and solidified Surface of the ingot produced t [52 us. (:1.
  • the present invention relates to a means for continuous casting, comprising at least one induction coil to produce an electromagnetic alternating field in a flow of molten metal in order to build up forces in this flow, directed towards the flow.
  • the frequency, voltage, etc. of the single phase a]- ternating current in such a coil are suitably chosen, sufficient forces directed towards the flow can be generated such that a column of melt which has not solidified will be held together laterally without spreading and without the need for chill or mould walls, a uniform surface then being obtained for the ingot. At the same time an ingot is obtained without blisters or burrs.
  • Coolant such as water, is applied to the surface of the solidifying or solidified ingot in the crystallizing zone of the ingot.
  • Such a casting technique has been used in practice for casting tin or aluminum or metals and alloys having approximately the same melting points, whereas because of temperature or other reasons it has not been possible to use this method on metals or alloys, such as iron or steel, which are more difficult to melt.
  • FIG. 1 shows a longitudinal crosssection of the casting means
  • FIG. 2 a lateral crosssection through the coil and ingot.
  • FIG. 1 shows how a metal stream 11, for example molten steel, is tapped in the vicinity of a single-phase alternating field from an induction coil 12 having one or several turns. Due to the influence of the field from the winding, inwardly directed forces are generated because of the pinch effect, which forces hold a column of molten metal 13 together so that no chill or mould walls are required.
  • the ingot column 17 of solidified and unsolidified melt is carried by a base 14 which is lowered at the desired casting rate.
  • the column is sprayed with coolant (at 15) close to the crystallization zone of the ingot, thus accelerating the solidification, particularly at the outer surface of the ingot. Due to the flow forces, an inner pressure is obtained in the metal, which results in homogeneous casting.
  • a thin screen 16 of nonmagnetic material such as stainless steel, is placed between the column 13-17 and the coil 12 to protect the turns of the coil against high temperature radiation and the moist atmosphere. Coolant flows through the turns of the winding in the normal manner.
  • the screen 16 is in the form of a casting around the melt column 13-17.
  • the screen is electrically insulated from the coil by some suitable insulating means, such as ceramic .or organic insulating material as shown in FIG. 2. Due to the water spray the screen is kept at such a low temperature that it maintains its mechanical strength during the casting process and at the same time conventional insulating material can be used around the coil due to the protective action of the screen.
  • the continuous casting can be carried out at a relatively high speed.
  • Means for continuous casting an ingot comprising at least one coil to produce an electromagnetic field in a flow of molten metal in order to generate forces directed towards said flow, said coil adapted to axially extend a substantial distance along the solidified ingot from the nonsolidified portion of the ingot, an enclosed protective screen of non-magnetic material arranged inwardly along the entire length of said coil, means to conduct a coolant towards the nonsolidified portion of said ingot, said screen being arranged in relation to the coolant conductor in such a way that, during the casting, it is sprinkled with coolant from the inside.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Laminated Bodies (AREA)
US00119776A 1970-03-03 1971-03-01 Device for continuous casting of metal Expired - Lifetime US3735799A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2740/70A SE346234B (de) 1970-03-03 1970-03-03

Publications (1)

Publication Number Publication Date
US3735799A true US3735799A (en) 1973-05-29

Family

ID=20260579

Family Applications (1)

Application Number Title Priority Date Filing Date
US00119776A Expired - Lifetime US3735799A (en) 1970-03-03 1971-03-01 Device for continuous casting of metal

Country Status (8)

Country Link
US (1) US3735799A (de)
JP (1) JPS5132581B1 (de)
CA (1) CA953076A (de)
DE (1) DE2108681C3 (de)
FR (1) FR2081651B1 (de)
GB (1) GB1342161A (de)
NO (1) NO130220B (de)
SE (1) SE346234B (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911706A (en) * 1973-04-09 1975-10-14 Murray W Davis Method and apparatus for forming metal
FR2289273A1 (fr) * 1974-11-01 1976-05-28 Olsson Erik Allan Procede de production par coulee de materiau metallique en bande
US4033398A (en) * 1976-02-27 1977-07-05 Vandervell Products Limited Methods of manufacturing laminated metal strip bearing materials
US4142572A (en) * 1978-03-24 1979-03-06 Reynolds Metals Company Shield for electromagnetic casting
DE2911541A1 (de) * 1978-07-03 1980-01-24 Olin Corp Verfahren und vorrichtung zum giessen von metallen
US4239078A (en) * 1978-03-23 1980-12-16 Voest-Alpine Aktiengesellschaft Cooled continuous casting mould
US4265294A (en) * 1979-05-30 1981-05-05 Olin Corporation Duflex impedance shield for shape control in electromagnetic casting
US4285387A (en) * 1980-01-14 1981-08-25 Olin Corporation Transformer-driven shield for electromagnetic casting
DE3049353A1 (de) * 1980-07-02 1982-02-04 General Electric Co., Schenectady, N.Y. "verfahren zur herstellung eines metallgegenstandes von grosser laengenausdehnung durch kontinuierliches giessen und vorrichtung zur durchfuehrung des verfahrens"
EP0053809A1 (de) * 1980-12-04 1982-06-16 Olin Corporation Vorrichtung und Verfahren zum Kühlen und Erstarren von geschmolzenem Material beim elektromagnetischen Guss
EP0066896A1 (de) * 1981-06-10 1982-12-15 Olin Corporation Einrichtung und Verfahren zum Kühlen und Erstarren von voll- oder halb-kontinuierlichem Stranggussmaterial
US4388962A (en) * 1978-11-02 1983-06-21 Olin Corporation Electromagnetic casting method and apparatus
EP0106791A1 (de) * 1982-09-14 1984-04-25 Asea Ab Anordnung beim kontinuierlichen Stranggiessen zum Umrühren der nicht erstarrten Bereiche des Giessstranges
US4462457A (en) * 1980-01-14 1984-07-31 Olin Corporation Transformer-driven shield for electromagnetic casting
US4473104A (en) * 1980-01-10 1984-09-25 Olin Corporation Electromagnetic casting process and apparatus
US4473105A (en) * 1981-06-10 1984-09-25 Olin Corporation Process for cooling and solidifying continuous or semi-continuously cast material
US4570699A (en) * 1979-02-05 1986-02-18 Olin Corporation Multi-turn coils of controlled pitch for electromagnetic casting
US4693299A (en) * 1986-06-05 1987-09-15 Westinghouse Electric Corp. Continuous metal casting apparatus
US4741383A (en) * 1986-06-10 1988-05-03 The United States Of America As Represented By The United States Department Of Energy Horizontal electromagnetic casting of thin metal sheets
US4824078A (en) * 1987-08-19 1989-04-25 Massachusetts Institute Of Technology Magnetic streamlining and flow control in tundishes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397251A1 (fr) * 1977-07-12 1979-02-09 Anvar Procede et dispositif pour diriger, en l'absence de parois, des veines metalliques liquides, notamment pour les centrer, les guider ou controler leur forme circulaire
FR2595596B1 (fr) * 1986-03-13 1988-04-29 Cegedur Lingotiere permettant de regler le niveau suivant lequel elle est en contact avec la surface libre du metal dans une coulee verticale

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467166A (en) * 1967-03-01 1969-09-16 Getselev Zinovy N Method of continuous and semicontinuous casting of metals and a plant for same
US3605865A (en) * 1969-12-23 1971-09-20 Getselev Zinovy N Continuous casting apparatus with electromagnetic screen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE534132A (de) * 1953-12-17
SE321056B (de) * 1965-10-04 1970-02-23 Metall Z Im V

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467166A (en) * 1967-03-01 1969-09-16 Getselev Zinovy N Method of continuous and semicontinuous casting of metals and a plant for same
US3605865A (en) * 1969-12-23 1971-09-20 Getselev Zinovy N Continuous casting apparatus with electromagnetic screen

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911706A (en) * 1973-04-09 1975-10-14 Murray W Davis Method and apparatus for forming metal
FR2289273A1 (fr) * 1974-11-01 1976-05-28 Olsson Erik Allan Procede de production par coulee de materiau metallique en bande
US4033398A (en) * 1976-02-27 1977-07-05 Vandervell Products Limited Methods of manufacturing laminated metal strip bearing materials
US4239078A (en) * 1978-03-23 1980-12-16 Voest-Alpine Aktiengesellschaft Cooled continuous casting mould
US4142572A (en) * 1978-03-24 1979-03-06 Reynolds Metals Company Shield for electromagnetic casting
DE2911541A1 (de) * 1978-07-03 1980-01-24 Olin Corp Verfahren und vorrichtung zum giessen von metallen
US4388962A (en) * 1978-11-02 1983-06-21 Olin Corporation Electromagnetic casting method and apparatus
US4570699A (en) * 1979-02-05 1986-02-18 Olin Corporation Multi-turn coils of controlled pitch for electromagnetic casting
US4265294A (en) * 1979-05-30 1981-05-05 Olin Corporation Duflex impedance shield for shape control in electromagnetic casting
US4473104A (en) * 1980-01-10 1984-09-25 Olin Corporation Electromagnetic casting process and apparatus
US4462457A (en) * 1980-01-14 1984-07-31 Olin Corporation Transformer-driven shield for electromagnetic casting
US4285387A (en) * 1980-01-14 1981-08-25 Olin Corporation Transformer-driven shield for electromagnetic casting
DE3049353A1 (de) * 1980-07-02 1982-02-04 General Electric Co., Schenectady, N.Y. "verfahren zur herstellung eines metallgegenstandes von grosser laengenausdehnung durch kontinuierliches giessen und vorrichtung zur durchfuehrung des verfahrens"
DE3049353C2 (de) * 1980-07-02 1985-07-25 General Electric Co., Schenectady, N.Y. Verfahren zum Stranggießen und Vorrichtung zur Durchführung des Verfahrens
US4358416A (en) * 1980-12-04 1982-11-09 Olin Corporation Apparatus and process for cooling and solidifying molten material being electromagnetically cast
EP0053809A1 (de) * 1980-12-04 1982-06-16 Olin Corporation Vorrichtung und Verfahren zum Kühlen und Erstarren von geschmolzenem Material beim elektromagnetischen Guss
EP0066896A1 (de) * 1981-06-10 1982-12-15 Olin Corporation Einrichtung und Verfahren zum Kühlen und Erstarren von voll- oder halb-kontinuierlichem Stranggussmaterial
US4473105A (en) * 1981-06-10 1984-09-25 Olin Corporation Process for cooling and solidifying continuous or semi-continuously cast material
EP0106791A1 (de) * 1982-09-14 1984-04-25 Asea Ab Anordnung beim kontinuierlichen Stranggiessen zum Umrühren der nicht erstarrten Bereiche des Giessstranges
US4693299A (en) * 1986-06-05 1987-09-15 Westinghouse Electric Corp. Continuous metal casting apparatus
US4741383A (en) * 1986-06-10 1988-05-03 The United States Of America As Represented By The United States Department Of Energy Horizontal electromagnetic casting of thin metal sheets
US4824078A (en) * 1987-08-19 1989-04-25 Massachusetts Institute Of Technology Magnetic streamlining and flow control in tundishes

Also Published As

Publication number Publication date
NO130220B (de) 1974-07-29
CA953076A (en) 1974-08-20
GB1342161A (en) 1973-12-25
DE2108681A1 (de) 1971-10-07
FR2081651B1 (de) 1975-07-04
FR2081651A1 (de) 1971-12-10
SE346234B (de) 1972-07-03
DE2108681B2 (de) 1973-03-29
DE2108681C3 (de) 1974-01-10
JPS5132581B1 (de) 1976-09-13

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