EP0015301B1 - Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage - Google Patents
Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage Download PDFInfo
- Publication number
- EP0015301B1 EP0015301B1 EP79100750A EP79100750A EP0015301B1 EP 0015301 B1 EP0015301 B1 EP 0015301B1 EP 79100750 A EP79100750 A EP 79100750A EP 79100750 A EP79100750 A EP 79100750A EP 0015301 B1 EP0015301 B1 EP 0015301B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slab
- support rollers
- metal slab
- magnetic field
- metal
- 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
Links
- 238000003756 stirring Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 title claims description 7
- 238000005266 casting Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 title 1
- 230000005291 magnetic effect Effects 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 238000004804 winding Methods 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 7
- 230000005520 electrodynamics Effects 0.000 claims description 4
- 239000000155 melt Substances 0.000 description 6
- 230000005284 excitation Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 239000000126 substance 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
Definitions
- the invention relates to a method and a device for the electrodynamic stirring of the sump of a metal slab passing through a metal support roller frame outside the casting mold, a magnetic field being generated by means of at least one winding, which detects a section of the slab and associated support rollers and an electrical current is galvanically generated is introduced and discharged into the slab via support rollers.
- the invention has for its object to provide a method by means of which the sump located within the already solidified strand shell can be stirred more intensely while maintaining the conventional metallic support rollers.
- This object is achieved in that it is conducted by means of the magnetic field generated magnetic flux through the metal slab and the electric current flows through the metal slab such that at least two locally different and oppositely directed parallel driving forces are generated by the one in the bottom of the metal slab guided circular stirring of the sump is carried out in a plane parallel to the slab withdrawal direction.
- a magnetic field is generated in the z direction with the aid of a DC winding (not shown further) and a current I is supplied via two support rollers 4.
- the current I is supplied via two pairs of support rollers and flows through the sump 3 with the thickness Ax primarily in the z direction with the current density j z .
- a pressure P y B x j z ⁇ x in the y direction also arises here, which causes a flow in the sump 3.
- FIG. 3 shows an embodiment with which excitation of a flow in the swamp is achieved according to the variant according to FIG. 2a. becomes.
- two field windings 10, 11 are arranged at a distance from one another in the z direction, said field windings comprising the support rollers 4 and the slab 1.
- a current I is passed through the slab 1 via opposite support rollers 4a, 4b and 4c, 4d in the direction shown, while a magnetic field is formed perpendicularly to it by the field windings.
- Fig. 3a the circular electrodynamic stirring flow generated in the slab plane is shown schematically by the dashed lines.
- more than two pairs of support rollers can be used for power supply. Furthermore, if necessary, only a single field winding can be used.
- FIG. 4 a and b show an implementation of variant b according to FIG. 2b.
- a magnetic winding 13, 16 and 14, 15 with iron yoke 17, 18 are arranged above the support rollers 4 on the broad sides of the slab 1. In principle, only one magnetic effect can be provided on one side.
- a magnetic field is generated perpendicular to the slab plane by means of the magnetic coils en 13 to 16, while the current I is fed axially into the slab 1 via the support rollers 4e, 4f and is discharged via the support rollers 4g, 4h.
- a direct current and a direct field are advantageously used, so that there is no need for reactive power and the required power can thus be kept relatively low.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Claims (4)
1. Procédé de brassage électrodynamique du cratère liquide d'une brame métallique (1) traversant une cage de rouleaux de soutien métalliques à l'extérieur de la lingotière, avec au moins un bobinage produisant un champ magnétique qui couvre un tronçon de la brame (1) et les rouleaux de soutien (4) correspondants, et fait passer et interrompt un courant électrique dans la brame (1), galvaniquement par l'intermédiaire des rouleaux de soutien (4), ledit procédé étant caractérisé en ce que le flux magnétique (B) produit par le champ magnétique est dirigé dans la brame métallique (1) et le courant électrique (I) circule dans la brame métallique (1) de façon à produire dans le cratère liquide (3) de cette dernière au moins deux forces motrices (P y) parallèles et opposées, à point d'application différent, et créant un brassage circulaire guidé du cratère liquide (3) dans un plan parallèle à la direction d'extraction (P) de la brame.
2. Dispositif pour la mise en oeuvre de procédé selon revendication 1, caractérisé par un bobinage de champ magnétique (10, 11), comprenant une partie de la brame métallique (1) et les rouleaux de soutien (4) correspondants, et dont le flux magnétique (Bz) est dirigé dans la brame métallique (1) parallèlement à sa direction d'extraction, tandis que le courant électrique (Ix), au voisinage du bobinage de champ magnétique (10, 11) circule transversalement dans la brame métallique, dans une zone différente et dans le sens opposé (figure 3).
3. Dispositif pour la mise en oeuvre de procédé selon revendication 1, caractérisé par un bobinage de champ magnétique (13/16 et/ou 14/15), comprenant une partie de la brame métallique (1) et les rouleaux de soutien (4) correspondants, et dont le flux magnétique (Bx) est dirigé transversalement dans la brame métallique (1), dans une zone différente et dans le sens opposé, tandis que le courant électrique (lz) circule dans la brame métallique parallèlement à sa direction d'extraction (figure 4a).
4. Dispositif selon revendication 3, caractérisé en ce que le plan du bobinage de champ magnétique (13/16 et/ou 14/15) est parallèle à la surface du grand côté de la brame métallique (1) appliquée sur les rouleaux de soutien (4); et le flux magnétique (Bx) est transmis per les rouleaux de soutien (4) (figure 4a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP79100750A EP0015301B1 (fr) | 1979-03-13 | 1979-03-13 | Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP79100750A EP0015301B1 (fr) | 1979-03-13 | 1979-03-13 | Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0015301A1 EP0015301A1 (fr) | 1980-09-17 |
| EP0015301B1 true EP0015301B1 (fr) | 1983-02-16 |
Family
ID=8186089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP79100750A Expired EP0015301B1 (fr) | 1979-03-13 | 1979-03-13 | Procédé et dispositif de brassage électromagnétique du cratère liquide d'une brame métallique sortant de la lingotière et passant entre les rouleaux d'un corset de guidage |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0015301B1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19625933A1 (de) * | 1996-06-28 | 1998-01-08 | Schloemann Siemag Ag | Rührer und Bremse für Stanggießanlage |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB872591A (en) * | 1956-07-18 | 1961-07-12 | British Iron Steel Research | Improvements in or relating to the casting of metals |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4030534A (en) * | 1973-04-18 | 1977-06-21 | Nippon Steel Corporation | Apparatus for continuous casting using linear magnetic field for core agitation |
| US4106546A (en) * | 1974-02-27 | 1978-08-15 | Asea Aktiebolag | Method for inductively stirring molten steel in a continuously cast steel strand |
| SE7402575L (fr) * | 1974-02-27 | 1975-08-28 | Asea Ab | |
| JPS5326210B2 (fr) * | 1974-03-23 | 1978-08-01 | ||
| SE410153B (sv) * | 1976-05-21 | 1979-10-01 | Asea Ab | Anleggning vid strenggjutning |
| FR2358222A1 (fr) * | 1976-07-13 | 1978-02-10 | Siderurgie Fse Inst Rech | Nouveaux procede et dispositif pour le brassage electromagnetique de produits metalliques coules en continu |
-
1979
- 1979-03-13 EP EP79100750A patent/EP0015301B1/fr not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB872591A (en) * | 1956-07-18 | 1961-07-12 | British Iron Steel Research | Improvements in or relating to the casting of metals |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0015301A1 (fr) | 1980-09-17 |
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