EP0511465B2 - Dispositif de brassage électromagnétique en lingotière - Google Patents
Dispositif de brassage électromagnétique en lingotière Download PDFInfo
- Publication number
- EP0511465B2 EP0511465B2 EP92102888A EP92102888A EP0511465B2 EP 0511465 B2 EP0511465 B2 EP 0511465B2 EP 92102888 A EP92102888 A EP 92102888A EP 92102888 A EP92102888 A EP 92102888A EP 0511465 B2 EP0511465 B2 EP 0511465B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- ingot mould
- radiation
- inductor
- mould tube
- 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
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000002285 radioactive effect Effects 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 claims 2
- 230000005499 meniscus Effects 0.000 abstract description 8
- 230000005674 electromagnetic induction Effects 0.000 abstract 4
- 230000006698 induction Effects 0.000 abstract 4
- 238000005266 casting Methods 0.000 description 18
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 229910001338 liquidmetal Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002893 slag Substances 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
-
- 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
- the present invention relates to an ingot mold with electromagnetic stirring device of an installation continuous casting comprising a mold tube vertical receiving molten metal, as well as a electromagnetic inductor to generate movement gyration of molten metal in the mold tube around the axis thereof.
- a device of this kind is known from the document EP-A-0093068.
- the open casting process or in free jet is simply to let the liquid metal in the mold tube through a calibrated nozzle with more or less constant flow.
- the level of the steel meniscus in the mold is controlled by adapting the extraction speed as a function of the extraction and according to the indication of an installation of level measurement based on a radioactive principle.
- This process is basically used for casting medium quality steel billets, because the casting is performed in contact with air.
- a process is used airtight casting which is casting with submerged nozzles and powders.
- liquid steel is introduced into the mold tube at through a nozzle which plunges into the liquid metal which is in the mold tube.
- Contact with air and oxygen is prevented by a layer of powder which covers the surface of the metal at the pouring meniscus.
- the casting is done at extraction speed constant.
- the level of the ingot mold steel is controlled by a buffer or a distributor drawer.
- Document DE-A-3819493 describes an ingot mold with electromagnetic stirring device which would allow the implementation of the two casting methods keep on going.
- This ingot mold includes an inductor which is adjusted like a piston in a separate compartment of the ingot mold cooling box, so to be essentially movable in height by the pressurized coolant.
- the ingot mold described does not include means for detecting the level of molten metal in the mold tube.
- GB-A-2021459 describes an ingot mold with an essentially movable external inductor horizontally with respect to a vertical ingot mold tube.
- Document EP-A-0063072 describes an ingot mold with a fixed inductor mounted in a cooling box surrounding the mold tube.
- a system for detecting the level of molten metal in the tube ingot mold includes a radiation source arranged outside the inductor.
- a notch in the inductor lets the radiation through avoiding as well as the inductor does not constitute a screen for the radiation.
- Document EP-A-0157255 describes an ingot mold with a fixed inductor.
- This inductor includes coils having housings for receiving a radiation source or a detector forming a system level detection.
- the problem underlying the present invention is to develop a simple ingot mold including a height-adjustable inductor and means for detect the level of molten metal in the tube mold.
- the tube of ingot mold is surrounded by a first steel tube coaxial which, in turn, is arranged inside a second coaxial tube around which the inductor is mounted, while the annular spaces between the two tubes and between the mold tube and the first tube are crossed by a coolant.
- the ingot mold is equipped with a level detector steel in the ingot mold tube, which consists of a cylindrical radiation source mounted inside the second tube and associated with a scintillometer mounted on the opposite side of said second tube.
- the radiation source is preferably located inside a cylindrical protective jacket in lead provided with a radial and movable slot around the axis of said source between an angular position in which the slot is directed on the mold tube and an angular garage position in which the slot is directed on a cylindrical lead block extending along said shirt.
- the ingot mold which consists of the ingot mold tube, of the inductor and the two tubes can be integral a set of underlying and removable rollers in block with this one.
- Figures 1 and 2 show an ingot mold 10 contained in a metal case 12.
- the ingot mold 10 comprises basically a vertical ingot mold tube 14 containing liquid metal 16 which is spilled from a tun-dish not shown.
- the molten metal 16 solidifies gradually in this mold tube and the blank metallic is extracted there by passing through a set 18 of underlying guide and forming rollers metal blanks.
- the set of rollers 18 is integral of the mold 10 and can be disassembled as a block with it.
- the ingot mold tube 14 which is generally consists of a copper tube, is surrounded by a tube coaxial steel 20 which forms with the mold tube a annular cylindrical space 22 in which a coolant for the ingot mold tube 14.
- a other cylindrical space 24 is delimited around the tube 20 by a second tube 26. This space 24 is closed towards the bottom by an annular plate 28 fixed to the two tubes 20 and 26.
- the cooling water enters the circuit by 30 and then in the annular gap 22 between the tube ingot mold 14 and tube 20.
- This space is very thin to ensure rapid circulation and cooling effective in the ingot mold tube 14.
- the water from cooling thus goes up along the mold tube to overflow through the top of tube 20 and fill the annular space 24.
- the cooling water leaves this space 24 by overflow in a pipe vertical not shown arranged along the inner wall of tube 26 and then through a pipe Release.
- the electromagnetic device 32 can be made up of one or more inductors.
- the inductor 32 is not fixed, but can be moved vertically between an elevated position according to figure 1 for casting in free jet and a lower position according to FIG. 2 for casting with submerged nozzle.
- the means of displacement of the inductor 32 can be constituted by any suitable means known per se, for example three vertical threaded rods which support the inductor 32 and which can be rotated synchronously by a suitable motor.
- inductor 32 slides vertically in several, for example three guide rods 50, the operation vertical achieved by a crane not shown.
- the rods 50 are designed to position the inductor 32 in three vertical positions different defined by three radial perforations upper 52 and two lower notches 54.
- the inductor 32 rests on the bottom of the mold 10 and can be keyed by the perforation lower 52. If the embodiment illustrated allows a third intermediate position, not shown, it is, of course, possible to predict than two or plan more.
- Inductor 32 has a circuit separate cooling, which is symbolized by arrows 34 and 36 for the inlet and outlet of water from cooling.
- Another feature of the present invention is monitoring the meniscus level of the liquid metal in the ingot mold tube 14.
- This monitoring is performed using a radiation source 38.
- a radiation source 38 by example a cobalt source, arranged in the upper region of annular space 24 and that is associated with a scintillometer 40 arranged on the opposite side of the ingot mold tube 14.
- this radiation source 38 is found inside a cylindrical protective jacket 42, as shown in more detail and enlarged in FIG. 3.
- This protective jacket 42 which can, for example, being made of lead, has a vertical slot 44 for the passage of the rays.
- This shirt protection 42 can be rotated around a vertical axis between an operating position shown in FIG.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- General Induction Heating (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Furnace Details (AREA)
Description
Claims (8)
- Lingotière d'une installation de coulée continue comprenantun tube de lingotière (14) recevant un métal en fusion (16) ,un tube extérieur (26) entourant le tube de lingotière (14) ,un circuit de refroidissement défini entre le tube extérieur (26) et le tube de lingotière (14),un inducteur électromagnétique (32) pour engendrer un mouvement giratoire du métal en fusion (16) dans le tube de lingotière (14) autour de l'axe de celui-ci, ledit inducteur électromagnétique (32) étant déplaçable verticalement par rapport au tube de lingotière (14), etun circuit de refroidissement séparé (34, 36) pour l'inducteur électromagnétique (32);un détecteur de niveau pour détecter le niveau du métal dans le tube de lingotière (14);ledit détecteur de niveau comprenant une source de radiation (38) agencée entre ledit tube extérieur (26) et le tube de lingotière (14), etl'inducteur électromagnétique (32) formant avec son circuit de refroidissement (34, 36) une unité de brassage qui est agencée à l' extérieur dudit tube extérieur (26) de façon à ce que des moyens de déplacement puissent la déplacer en bloc verticalement le long dudit tube extérieur (26).
- Lingotière de coulée continue selon la revendication 1, caractérisée en ce que ledit détecteur de niveau comprend un scintillomètre (40), ladite source de radiation (38) étant agencée d'un côté du tube de lingotière (14), et ledit scintillomètre (40) étant agencé du côté opposé du tube de lingotière (14).
- Lingotière de coulée continue selon la revendication 1 ou 2, caractériséeen ce que un tube intérieur (20) entoure le tube de lingotière (14) et forme avec ce dernier un premier espace annulaire (22) définissant une première section de passage pour un liquide de refroidissement,en ce que ledit tube extérieur (26) entoure ledit tube intérieur (20) et forme avec ce dernier un deuxième espace annulaire (24) définissant une deuxième section de passage pour un liquide de refroidissement,en ce que ladite première section de passage est de loin inférieure à ladite deuxième section de passage, eten ce que ladite source de radiation (38) est agencée dans ledit deuxième espace annulaire (24).
- Lingotière selon la revendication 1, 2 ou 3, caractériséeen ce que la source de radiation (38) est munie d'une chemise cylindrique de protection (42) absorbant la radiation radioactive, eten ce que cette chemise de protection (42) comporte une fente longitudinale (44) pour le passage de l'énergie émise par la source de radiation (38).
- Lingotière selon la revendication 4, caractériséeen ce que ladite chemise cylindrique de protection (42) est montée dans ledit circuit de refroidissement de façon à pouvoir être tournée autour de l'axe longitudinal de la source de radiation entre une première position, dans laquelle ladite fente longitudinale (44) est dirigée vers le tube de lingotière (14), et une deuxième position, dans laquelle ladite fente longitudinale (44) est dirigée vers un bloc d'absorption (46).
- Lingotière selon l'une quelconque des revendications 1 à 5, caractérisée par des tiges filetées verticales supportant l'inducteur.
- Lingotière selon l'une quelconque des revendications 1 à 5, caractérisée par des tiges de guidages verticales (50) pour l'inducteur.
- Lingotière selon la revendication 7, caractérisée par des moyens pour supporter l'inducteur (32) dans différentes positions verticales prédéterminées sur lesdites tiges de guidage verticales (50).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97100231A EP0778098B1 (fr) | 1991-04-03 | 1992-02-21 | Lingotière avec dispositif de brassage électromagnétique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU87914A LU87914A1 (fr) | 1991-04-03 | 1991-04-03 | Dispositif de brassage electromagnetique en lingotiere |
LU87914 | 1991-04-03 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100231A Division EP0778098B1 (fr) | 1991-04-03 | 1992-02-21 | Lingotière avec dispositif de brassage électromagnétique |
EP97100231.6 Division-Into | 1997-01-09 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP0511465A2 EP0511465A2 (fr) | 1992-11-04 |
EP0511465A3 EP0511465A3 (en) | 1993-04-21 |
EP0511465B1 EP0511465B1 (fr) | 1997-09-24 |
EP0511465B2 true EP0511465B2 (fr) | 2003-12-03 |
Family
ID=19731286
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100231A Expired - Lifetime EP0778098B1 (fr) | 1991-04-03 | 1992-02-21 | Lingotière avec dispositif de brassage électromagnétique |
EP92102888A Expired - Lifetime EP0511465B2 (fr) | 1991-04-03 | 1992-02-21 | Dispositif de brassage électromagnétique en lingotière |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97100231A Expired - Lifetime EP0778098B1 (fr) | 1991-04-03 | 1992-02-21 | Lingotière avec dispositif de brassage électromagnétique |
Country Status (6)
Country | Link |
---|---|
EP (2) | EP0778098B1 (fr) |
AT (2) | ATE171656T1 (fr) |
CA (1) | CA2040830C (fr) |
DE (2) | DE69227206T2 (fr) |
ES (2) | ES2123347T3 (fr) |
LU (1) | LU87914A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1288900B1 (it) * | 1996-05-13 | 1998-09-25 | Danieli Off Mecc | Procedimento di colata continua con campo magnetico pulsante e relativo dispositivo |
FR2893868B1 (fr) * | 2005-11-28 | 2008-01-04 | Rotelec Sa | Reglage du mode de brassage electromagnetique sur la hauteur d'une lingotiere de coulee continue |
CN105964988B (zh) * | 2016-03-19 | 2019-04-02 | 上海大学 | 移动型脉冲磁致振荡细化金属凝固组织方法 |
CN109746404B (zh) * | 2019-03-08 | 2021-05-18 | 石家庄爱迪尔电气有限公司 | 一种便于维护和加工的电磁搅拌铸造设备 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1086276A (en) † | 1964-08-22 | 1967-10-04 | Schloemann Ag | Improvements in means for measuring the fullness of oscillating chill-moulds containing molten material |
DE2921280A1 (de) † | 1978-05-26 | 1979-11-29 | Arbed | Einrichtung zum stranggiessen von metallen unter elektromagnetischem ruehren |
JPS6360056A (ja) † | 1986-08-29 | 1988-03-16 | Nisshin Steel Co Ltd | Ti含有ステンレス鋼の連続鋳造方法および連続鋳造用鋳型 |
DE3730300C2 (fr) † | 1987-09-10 | 1989-08-10 | Aeg-Elotherm Gmbh, 5630 Remscheid, De | |
JPH0351954U (fr) † | 1989-09-20 | 1991-05-21 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT185038B (de) * | 1951-03-16 | 1956-03-26 | Boehler & Co Ag Geb | Verfahren zur Kühlung von Stranggußkokillen |
US3153820A (en) * | 1961-10-09 | 1964-10-27 | Charles B Criner | Apparatus for improving metal structure |
JPS5719141A (en) * | 1980-07-09 | 1982-02-01 | Mitsubishi Heavy Ind Ltd | Electromagnetic stirring device of continuous casting facility |
FR2502996A1 (fr) * | 1981-04-03 | 1982-10-08 | Rotelec Sa | Inducteur electromagnetique a champ tournant et equipement de lingotiere de coulee continue des metaux pour son utilisation |
LU84103A1 (fr) | 1982-04-22 | 1984-03-02 | Arbed | Systeme de decrassage automatique de busettes pendant la coulee de metaux |
SE441502B (sv) * | 1984-03-19 | 1985-10-14 | Asea Ab | Nivametare vid kokiller for strenggjutning |
IT1181219B (it) * | 1984-09-17 | 1987-09-23 | Danieli Off Mecc | Colata continua con agitatori polifunzionali |
DE3819493A1 (de) * | 1988-06-08 | 1989-12-14 | Voest Alpine Ind Anlagen | Knueppel- bzw. vorblock-stranggiesskokille |
GB9003196D0 (en) * | 1990-02-13 | 1990-04-11 | Davy Mckee Sheffield | Continuous casting |
-
1991
- 1991-04-03 LU LU87914A patent/LU87914A1/fr unknown
- 1991-04-19 CA CA002040830A patent/CA2040830C/fr not_active Expired - Lifetime
-
1992
- 1992-02-21 AT AT97100231T patent/ATE171656T1/de active
- 1992-02-21 EP EP97100231A patent/EP0778098B1/fr not_active Expired - Lifetime
- 1992-02-21 ES ES97100231T patent/ES2123347T3/es not_active Expired - Lifetime
- 1992-02-21 EP EP92102888A patent/EP0511465B2/fr not_active Expired - Lifetime
- 1992-02-21 DE DE69227206T patent/DE69227206T2/de not_active Expired - Lifetime
- 1992-02-21 ES ES92102888T patent/ES2108054T5/es not_active Expired - Lifetime
- 1992-02-21 AT AT92102888T patent/ATE158525T1/de active
- 1992-02-21 DE DE69222348T patent/DE69222348T3/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1086276A (en) † | 1964-08-22 | 1967-10-04 | Schloemann Ag | Improvements in means for measuring the fullness of oscillating chill-moulds containing molten material |
DE2921280A1 (de) † | 1978-05-26 | 1979-11-29 | Arbed | Einrichtung zum stranggiessen von metallen unter elektromagnetischem ruehren |
JPS6360056A (ja) † | 1986-08-29 | 1988-03-16 | Nisshin Steel Co Ltd | Ti含有ステンレス鋼の連続鋳造方法および連続鋳造用鋳型 |
DE3730300C2 (fr) † | 1987-09-10 | 1989-08-10 | Aeg-Elotherm Gmbh, 5630 Remscheid, De | |
JPH0351954U (fr) † | 1989-09-20 | 1991-05-21 |
Also Published As
Publication number | Publication date |
---|---|
ATE158525T1 (de) | 1997-10-15 |
EP0778098A3 (fr) | 1997-10-08 |
EP0511465B1 (fr) | 1997-09-24 |
EP0511465A3 (en) | 1993-04-21 |
ATE171656T1 (de) | 1998-10-15 |
EP0511465A2 (fr) | 1992-11-04 |
CA2040830C (fr) | 2003-08-19 |
LU87914A1 (fr) | 1992-11-16 |
DE69222348D1 (de) | 1997-10-30 |
DE69222348T2 (de) | 1998-02-26 |
DE69227206D1 (de) | 1998-11-05 |
ES2108054T5 (es) | 2004-07-01 |
ES2123347T3 (es) | 1999-01-01 |
DE69222348T3 (de) | 2004-07-22 |
DE69227206T2 (de) | 1999-04-15 |
EP0778098A2 (fr) | 1997-06-11 |
ES2108054T3 (es) | 1997-12-16 |
EP0778098B1 (fr) | 1998-09-30 |
CA2040830A1 (fr) | 1992-10-04 |
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