EP0080326A1 - Appareil pour la coulée continue d'acier - Google Patents
Appareil pour la coulée continue d'acier Download PDFInfo
- Publication number
- EP0080326A1 EP0080326A1 EP82306122A EP82306122A EP0080326A1 EP 0080326 A1 EP0080326 A1 EP 0080326A1 EP 82306122 A EP82306122 A EP 82306122A EP 82306122 A EP82306122 A EP 82306122A EP 0080326 A1 EP0080326 A1 EP 0080326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coils
- strand
- connections
- steel
- continuous 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000009749 continuous casting Methods 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 23
- 238000005266 casting Methods 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 150000001398 aluminium Chemical class 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
Definitions
- This invention relates to the continuous casting of steel, and more particularly to electromagnetic stirring of the steel while still-molten and/or as it solidifies after pouring into a mould.
- Helical stirring can also, for example, have advantage in the casting of alloys with long solidification ranges, for example high carbon steels typically with carbon content ranging from 0.5 to 1.5%, where it would arrest the collumnar crystal growth giving a central equiaxed structure with reduced mini-ingotism, bridging, central segregation of alloying elements and allow for a higher casting temperature without its pronounced deleterious effects.
- apparatus for continuously downwardly casting steel including a continuous casting mould and electromagnetic stirring means located about the metal strand path, the electromagnetic stirring means comprising a set of electromagnetic coils disposed about the strand, the set of coils being connected to two separate power sources by means of two separate sets of connections such that one power supply and set of connections activates the set of coils to provide a rotational field force upon the strand, and the other power supply and set of connections activates the set of coils to provide an axial field force upon the strand.
- the electromagnetic stirring means may be arranged about the strand within and/or below the casting mould.
- the present invention overcomes potential disadvantages of previous proposals for helical stirring which suggested, for example, a skewed arrangement of coils which could be in some circumstances difficult to accommodate about a continuous casting mould and could in some circumstances give only a limited helix angle variation.
- a further previous proposal was for fixed inductors about a continuous casting mould. Although in this arrangement the disposition of the.inductors would not usually create any serious problem, the helix angles produced were found not always to be conducive to the best metallurgical effects upon the cast material.
- the two power sources may be arranged with advantage to operate at different frequencies.
- a continuous casting mould 1 is provided in the usual way with a copper mould wall 2 and is surrounded by a cooling water annulus 3 and an outer jacket wall 4 of austenitic steel.
- a plurality of coils 5 are located along each side of the mould and are mounted on main iron circuits 6 which are linked with secondary iron circuits 7, necessary to allow for rotating magnetic flux.
- mould stirring could be achieved with a similar arrangement of coils provided these were suitably protected from the hot strand by means of a larger clearance therefrom and appropriate heat shield in place of the mould wall 2.
- each side of the mould is provided with a linear magnetic inductor 8 comprising the coils 5 and iron circuits 6 and 7 designed to produce an upward magnetic field.
- Each inductor is fed from a polyphase electrical supply 9, typically at low frequency.
- the inductor coils are connected in star, adjacent inductors being connected anti-phase, thus producing within the mould a magnetic field with strong radial and tangential components. Adjustment of the frequency and current produced by the axial supply allows the axial body forces in the material in the mould to be adjusted, resulting in axial movement of the molten material.
- a further and separate polyphase supply 10 is connected to the star points 11 of the inductors 8 in correct phase rotation.
- the supply will induce a rotating field system about the vertical axis of the mould. Adjustment of the frequency and current produced by the rotary supply allows the rotational body forces in the material in the mould to be adjusted resulting in rotational movement of the molten material.
- differing frequencies for the rotational suppy and the axial supply are provided so that the RM5 value of current in each coil is approximately the same. Should the frequency of both the rotational supply and the axial supply be the same, the RMS value of current in each coil will in use vary so that there is risk of overheating the coils and at the same time under-utilising the coils.
- the calculated RMS Flux Density at the mould surface is, with respect to axial mode stirring, 0.19 Tesla with a travelling wave velocity of 3m/sec and an electrical input of 30 KVA; and is with respect to rotary mode stirring 0.09 Tesla with a frequency of 5 Hertz and an electrical input of 20 KVA.
- the mould has a copper inner jacket 8 mm thick, an austenitic steel outer jacket 8 mm thick, and a 4 mm water gap.
- the stirred length along the strand is approximately 650 mm and the mould section 150 mm square.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8135013 | 1981-11-20 | ||
| GB8135013 | 1981-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0080326A1 true EP0080326A1 (fr) | 1983-06-01 |
Family
ID=10526031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82306122A Withdrawn EP0080326A1 (fr) | 1981-11-20 | 1982-11-17 | Appareil pour la coulée continue d'acier |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0080326A1 (fr) |
| JP (1) | JPS58135755A (fr) |
| GB (1) | GB2109724A (fr) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2632549A1 (fr) * | 1988-06-08 | 1989-12-15 | Voest Alpine Ind Anlagen | Lingotiere pour la coulee continue de billettes ou de blooms |
| WO1994015739A1 (fr) * | 1993-01-15 | 1994-07-21 | J. Mulcahy Enterprises Inc. | Modificateur de brassage magnetique c.a. pour la coulee continue de metaux |
| WO1996018469A1 (fr) * | 1994-12-15 | 1996-06-20 | Asea Brown Boveri Ab | Procede et dispositif de coulee dans un moule |
| US5699850A (en) * | 1993-01-15 | 1997-12-23 | J. Mulcahy Enterprises Inc. | Method and apparatus for control of stirring in continuous casting of metals |
| WO2004058433A3 (fr) * | 2002-12-16 | 2005-05-19 | Irving I Dardik | Systemes et procedes d'influence electromagnetique sur un continuum electroconducteur |
| CN100421838C (zh) * | 2002-12-16 | 2008-10-01 | 欧文·I·达迪克 | 控制类铁金属和有色金属锭和铸锭的晶体结构的方法 |
| CN102574202A (zh) * | 2009-08-31 | 2012-07-11 | Abb公司 | 钢坯和钢锭连铸的电磁搅拌器装置 |
| CN103182495A (zh) * | 2011-12-29 | 2013-07-03 | 宝山钢铁股份有限公司 | 一种多功能电磁搅拌器 |
| ITUB20159776A1 (it) * | 2015-12-30 | 2017-06-30 | Ergolines Lab S R L | Impianto di produzione di barre metalliche, macchina di colata, processo di colata e metodo di controllo di dispositivi elettromagnetici di agitazione di metallo fuso |
| CN107116191A (zh) * | 2017-05-15 | 2017-09-01 | 东北大学 | 一种复合式螺旋电磁搅拌器 |
| CN112074359A (zh) * | 2018-05-08 | 2020-12-11 | 日本制铁株式会社 | 电磁搅拌装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58215254A (ja) * | 1982-06-08 | 1983-12-14 | Kawasaki Steel Corp | 連続鋳造用鋳型の下方に配設される電磁攪拌装置 |
| GB2184674A (en) * | 1985-12-19 | 1987-07-01 | Ti | Stirring of molten metal during continuous casting |
| US5746268A (en) * | 1994-03-07 | 1998-05-05 | Nippon Steel Corporation | Continuous casting method and apparatus |
| DE19843354C1 (de) * | 1998-09-22 | 2000-03-09 | Ald Vacuum Techn Gmbh | Vorrichtung zum gerichteten Erstarren einer in eine Formschale gegossenen Metallschmelze sowie ein Verfahren hierzu |
| US6402367B1 (en) * | 2000-06-01 | 2002-06-11 | Aemp Corporation | Method and apparatus for magnetically stirring a thixotropic metal slurry |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995678A (en) * | 1976-02-20 | 1976-12-07 | Republic Steel Corporation | Induction stirring in continuous casting |
| DE7801279U1 (de) * | 1978-01-18 | 1978-12-21 | Aeg-Elotherm Gmbh, 5630 Remscheid | Vorrichtung zum elektromagnetischen ruehren des abkuehlenden metalls in einem gusstrang |
| DE2903225A1 (de) * | 1978-02-01 | 1979-08-02 | Concast Ag | Stranggiesskokille |
| WO1980001999A1 (fr) * | 1979-03-21 | 1980-10-02 | British Steel Corp | Coulee d'acier en continu |
-
1982
- 1982-11-17 GB GB08232749A patent/GB2109724A/en not_active Withdrawn
- 1982-11-17 EP EP82306122A patent/EP0080326A1/fr not_active Withdrawn
- 1982-11-18 JP JP20124282A patent/JPS58135755A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3995678A (en) * | 1976-02-20 | 1976-12-07 | Republic Steel Corporation | Induction stirring in continuous casting |
| DE7801279U1 (de) * | 1978-01-18 | 1978-12-21 | Aeg-Elotherm Gmbh, 5630 Remscheid | Vorrichtung zum elektromagnetischen ruehren des abkuehlenden metalls in einem gusstrang |
| DE2903225A1 (de) * | 1978-02-01 | 1979-08-02 | Concast Ag | Stranggiesskokille |
| WO1980001999A1 (fr) * | 1979-03-21 | 1980-10-02 | British Steel Corp | Coulee d'acier en continu |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2632549A1 (fr) * | 1988-06-08 | 1989-12-15 | Voest Alpine Ind Anlagen | Lingotiere pour la coulee continue de billettes ou de blooms |
| WO1994015739A1 (fr) * | 1993-01-15 | 1994-07-21 | J. Mulcahy Enterprises Inc. | Modificateur de brassage magnetique c.a. pour la coulee continue de metaux |
| US5699850A (en) * | 1993-01-15 | 1997-12-23 | J. Mulcahy Enterprises Inc. | Method and apparatus for control of stirring in continuous casting of metals |
| WO1996018469A1 (fr) * | 1994-12-15 | 1996-06-20 | Asea Brown Boveri Ab | Procede et dispositif de coulee dans un moule |
| CN1083308C (zh) * | 1994-12-15 | 2002-04-24 | 瑞典通用电器勃朗勃威力公司 | 用于铸型浇注的方法和装置 |
| WO2004058433A3 (fr) * | 2002-12-16 | 2005-05-19 | Irving I Dardik | Systemes et procedes d'influence electromagnetique sur un continuum electroconducteur |
| US7350559B2 (en) | 2002-12-16 | 2008-04-01 | Energetics Technologies, Llc | Systems and methods of electromagnetic influence on electroconducting continuum |
| US7381238B2 (en) | 2002-12-16 | 2008-06-03 | Energetics Technologies, L.L.C. | System and method of electromagnetic influence on electroconducting continuum |
| CN100421838C (zh) * | 2002-12-16 | 2008-10-01 | 欧文·I·达迪克 | 控制类铁金属和有色金属锭和铸锭的晶体结构的方法 |
| US7449143B2 (en) | 2002-12-16 | 2008-11-11 | Energetics Technologies, L.L.C. | Systems and methods of electromagnetic influence on electroconducting continuum |
| US7675959B2 (en) | 2002-12-16 | 2010-03-09 | Energetics Technologies, Llc | Systems and methods of electromagnetic influence on electroconducting continuum |
| CN102574202A (zh) * | 2009-08-31 | 2012-07-11 | Abb公司 | 钢坯和钢锭连铸的电磁搅拌器装置 |
| CN103182495A (zh) * | 2011-12-29 | 2013-07-03 | 宝山钢铁股份有限公司 | 一种多功能电磁搅拌器 |
| CN103182495B (zh) * | 2011-12-29 | 2015-04-22 | 宝山钢铁股份有限公司 | 一种多功能电磁搅拌器 |
| ITUB20159776A1 (it) * | 2015-12-30 | 2017-06-30 | Ergolines Lab S R L | Impianto di produzione di barre metalliche, macchina di colata, processo di colata e metodo di controllo di dispositivi elettromagnetici di agitazione di metallo fuso |
| WO2017114587A1 (fr) * | 2015-12-30 | 2017-07-06 | Ergolines Lab S.R.L. | Installation de production de tiges métalliques, machine de coulée, processus de coulée et procédé de commande de dispositifs agitateur électromagnétique de métal fondu |
| CN108430668A (zh) * | 2015-12-30 | 2018-08-21 | 麦角灵实验室公司 | 金属杆的生产设备、铸造机、熔融金属的电磁搅拌装置的铸造工艺和控制方法 |
| KR20180101431A (ko) * | 2015-12-30 | 2018-09-12 | 얼고라인스 랩 에스알엘 | 금속 봉 생산 플랜트, 주조기, 주조 공정 및 용융 금속의 전자기 교반 장치의 제어 방법 |
| EP3626366A1 (fr) | 2015-12-30 | 2020-03-25 | Ergolines Lab S.r.l. | Installation de production de matériaux métalliques, machine de moulage, processus de moulage et procédé de commande de dispositifs à agitateur électromagnétique en métal fondu et système agitateur |
| RU2723495C2 (ru) * | 2015-12-30 | 2020-06-11 | Эрголайнз Лэб С.Р.Л. | Установка для производства металлических стержней, литейная машина, процесс литья и способ управления электромагнитными устройствами перемешивания расплавленного металла |
| US10792730B2 (en) | 2015-12-30 | 2020-10-06 | Ergolines Lab S.R.L. | Production plant of metal rods, casting machine, casting process and control method of electromagnetic stirrer devices of molten metal |
| EP3845328A1 (fr) | 2015-12-30 | 2021-07-07 | Ergolines Lab S.r.l. | Installation de production de tiges métalliques, machine de moulage et procédé de moulage |
| CN107116191A (zh) * | 2017-05-15 | 2017-09-01 | 东北大学 | 一种复合式螺旋电磁搅拌器 |
| CN107116191B (zh) * | 2017-05-15 | 2020-09-29 | 东北大学 | 一种复合式螺旋电磁搅拌器 |
| CN112074359A (zh) * | 2018-05-08 | 2020-12-11 | 日本制铁株式会社 | 电磁搅拌装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2109724A (en) | 1983-06-08 |
| JPS58135755A (ja) | 1983-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): BE DE FR IT SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19840202 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SWAINSTON, CHRISTOPHER MORTIMER |