CA2040830C - Electromagnetic stirring device in an ingot mould - Google Patents
Electromagnetic stirring device in an ingot mould Download PDFInfo
- Publication number
- CA2040830C CA2040830C CA002040830A CA2040830A CA2040830C CA 2040830 C CA2040830 C CA 2040830C CA 002040830 A CA002040830 A CA 002040830A CA 2040830 A CA2040830 A CA 2040830A CA 2040830 C CA2040830 C CA 2040830C
- Authority
- CA
- Canada
- Prior art keywords
- continuous casting
- casting mould
- mould
- radiation
- assembly according
- 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
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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
- B22D11/12—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
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- 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)
Abstract
The invention relates to an electromagnetic stirring device in an ingot mould in a continuous casting installation with a mould and an inductor for producing a rotational movement of the molten metal in the mould.
To permit implementation of free-stream casting and submerged-nozzle casting in the same device, the inductor is vertically displaceable relative to the mould.
To permit implementation of free-stream casting and submerged-nozzle casting in the same device, the inductor is vertically displaceable relative to the mould.
Description
I
P-PWU~-2301MF' LLEC°I'RO~IAG~TIC STIRRIl~~ DE'~J~ICE ICI Ald IING~"1.° ~1IU~
The present invention relates to an electromag-netic stirring device in an ingot mould of a continuous casting installation comprising a vertical mould, which receives molten metal, and an electromagnetic inductor for producing a gyratory movement of the molten metal in the mould about the axis thereof.
A device of this kind is known from the document EP-A-0,093,06. Essentially two different casting methods are employed depending on the quality and the nature of the cast products. The open or free-stream casting method consists simply in allowing the liquid metal to flow into the mould through a nozzle calibrated to give a more or less constant flow rate. The steel meniscus .level i;n the ingot mould is controlled by altering the withdrawal speed as a function of the withdrawal and in accordance with the reading of level-measuring equipment based on a radioactive principle. This .method is essentially used for casting steel billets of average quality, since the casting is carried out in contact with air.
To improve the quality of the steel, a casting method protected from air is used, .namely .casting with submerged nozzles and powders. According to this method, the liquid steel is introduced into the mould through a .
nozzle which is immersed in the liquid metal present in the mould. Contact with air and oxygen is presented by a layer of powder which covers the surface of the metal at the casting meniscus.
In this case, the casting is performed at a constant withdrawal speed. The steel level in the ingot mould is controlled by a stopper or a distributing slide valve.
In both casting methods, it is also known to improve the quality of the steel-by means of electromag-netic stirring, which, however, has to be adapted to the chosen casting method and to the intended qualities of the steel. Thus, for example, in the case of the casting of billets by the free-stream method, the main object _ 2 _ sought by the application of electromagnetic stirring in the ingot mould consists in improving the surface condi-tion of the billets by eliminating pinholes and slag incrustations. To achieve this, the rotational speed of the steel in the ingot mould at the meniscus level must be very high, hence the importance of the location of the inductor relative to the meniscus in respect of the surface condition of the billets.
In contrast, in the case of the casting of blooms i using a submerged nozzle and casting powder, it is advantageous to reduce the rotational speed at the meniscus level in order to prevent as fax as possible the casting powder from being carried away and to reduce wear v on the nozzle, by retaining as high a stirring intensity Z5 as possible below the meniscus. In other words, in free stream casting it is preferable for the inductor to be located in the upper region of the mould, whereas in submerged-nozzle casting it is preferable for the induc tor to be disposed at a lower level. This is the reason why, in order to benefit fully from the advantages offered by electromagnetic stirring in the ingot mould, it is preferable to have available two different instal-lotions in order to implement each of the two. casting methods.
The object of the present invention is to provide a new electromagnetic stirring device in an ingot mould which permits implementation of the two casting methods in the same installation.
To achieve this objective, the present invention proposes an electromagnetic stirring device of the kind described in the preamble, which is essentially charac terised in that the inductor is disposed outside the mould and is vertically displaceable relative thereto..
According to an advantageous embodiment, the mould is surrounded by a first coaxial tube made of steel which, in turn, is disposed inside a second coaxial tube around which the inductor is mounted, whilst the annular spaces betweenythe two tubes and between the mould and the first tube are traversed by a cooling liquid.
The device may be equipped with a detector for detecting the steel level in the mould, consisting of a cylindrical radiation source mounted inside the second tube and associated with a scintillometer mounted an the opposite side of the said second tube.
The radiation source is preferably located inside a protective cylindrical jacket made of lead, provided with a radial slot and movable about the axis of the said source between an angular position in which the slot is directed to=,~ards the mould and an i..noperative angular position in which the slat is directed towards a cylind-rical block made of lead which extends along the said jacket.
Theingot mould, which consists of the mould, the inductor and the two tubes, can be integral with a set of underlying rollers and dismountable as a unit therewith.
Other features and characteristics will a>merge from the xietailed description of an advantageous embodi ment given below, by way of illustration, with reference to the accompanying drawings in which:
figure 1 shows diagrammatically a vertical section ,of a device according to the present invention illustrating the: inductor in the position for free-stream ca-st~:ng;
~5 Figure 2 shows a similar view to that of figure 1, t~hP inductor being in the position for submerged-nozzle casting, and i~igure 3 shows diagrammatically a horizontal section through the mould and the radiation source.
Figures 1 and 2 show an ingot mould i4 contained in a metallic housing 12. The ingot mould 10 comprises essentially a vertical tubular mould I4 containing liquid metal 16, which is poured from a tundish (not shown). The molten metal 16 solidifies progressively in this mould and the metal blank is withdrawn therefrom, passing through a set 18 of underlying rollers for guiding and shaping the metal blanks. According to a preferred embodiment of the invention, the set of rollers 18 is integral with the ingot mould l0 and can be dismounted as _ ~ _ ~~Q~~~~~
a unit therewith.
The mould 14, which generally co:~sists of a copper tube, is surrounded by a coaxial steel tube 20 which forms with the mould an annular cylindrical space 22 in which a liquid for cooling the mould 14 circulates.
Another 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 tyro tubes 20 and 26.
The Gaoling water enters the circuit at 30 and then the annular interstice 22 between the mould 14 and the tube 20. This space is very narrow ::o ensure rapid circulation and efficient cooling in the ~~uld 14. The cooling water thus rises alang the mould, flows over the top of the tube 20 and fills the annular apace 24. The cooling water leaves this space 24 by flowing over into a vertical pipe (not shown) arranged along the inner wall of 'the tube 26 and then through an outlet:.pipe.
Located around the outer tube .26 is an electro magnetic inductor 32, known per se, fox ~o~~fectinc~ the electromagnetic stirring of the metal 16 i°n :the mould 14.
The electromagnetic device 32 can consist of one or more inductors.
In accordance with the present .,invention, the inductor 32 is not fixed but can be displaced vertically between a raised position according to .Figure 1 for free stream casting and a lower~pos.ition according to Figure 2 for submerged-nozzle casting. The means for displacing the inductor 32 can consist of any suitable means known per se, for example three vertical threaded rods which support the inductor 32 and which can be rotated syn-chronously by a suitable motor.
According to a simple and efficient embodiment, the inductor 32 slides vertically in a plurality of, for example three, guide rods 50, the vertical movement being effected by means of a crane (not shown). In the example shown, the rods 50 are designed to position the inductor 32 in three different vertical positions defined by three upper radial perforations 52 and two lower notches 54.
.~ ~t~40~~~.~
When the inductor 32 is raised into the position according to Figure 1, it can be held there by manually engaging a claw (not shown) in 'the upper notch 54 and locked with the aid of a key (not shown) engaged through 5 the upper perforation.
2n the lower position, the inductor 32 rests on the bottom of the ingot mould 10 and e:an be keyed by the lower perforation 52. Although the embodiment illustrated permits a third intermediate position (not shown), it is, of course, possible to provide only two positions or to provide more positions.
The inductor 32 can also comprise a separate cooling circuit, which is indicated by the arrows 34 and 36 for the admission and the outlet of cooling water.
I5 Another feature of the present invention is the monitoring of the meniscus level of the liquid metal in the mould I4. This monitoring is carried out with the aid of a radiation source 38, for example using cobalt, which is arranged in the upper region of the annular space 24 and is associated with a scintillome~ter 40 disposed on the opposite side of the mould I4. To reduce the risks of exposure of personnel, this radiation source 38 is located inside a protective cylindrical jacket 42, as shown in greater detail and enlarged in Figure 3. This protective jacket 42, which can, for example, be made of lead, has a vertical slot 44 for the passage of .the radiation. This protective jacket 42 can be rotated about a vertical axis between an operative position shown in Figure 3, in which the slot 44 is directed towards the mould 14, and an inoperative position (not shown), in which the slot 44 is directed against a vertical absorp-tion block 46. By virtue of this arrangement, it is possible for an operator to carry out work on the mould 14 without being exposed to the radiation from the source 38, this radiation being absorbed by the protective block 46.
The actual measurement of the level will not be explained in greater detail in view of the fact that the use of a radiation source for measuring a level is known par se.
P-PWU~-2301MF' LLEC°I'RO~IAG~TIC STIRRIl~~ DE'~J~ICE ICI Ald IING~"1.° ~1IU~
The present invention relates to an electromag-netic stirring device in an ingot mould of a continuous casting installation comprising a vertical mould, which receives molten metal, and an electromagnetic inductor for producing a gyratory movement of the molten metal in the mould about the axis thereof.
A device of this kind is known from the document EP-A-0,093,06. Essentially two different casting methods are employed depending on the quality and the nature of the cast products. The open or free-stream casting method consists simply in allowing the liquid metal to flow into the mould through a nozzle calibrated to give a more or less constant flow rate. The steel meniscus .level i;n the ingot mould is controlled by altering the withdrawal speed as a function of the withdrawal and in accordance with the reading of level-measuring equipment based on a radioactive principle. This .method is essentially used for casting steel billets of average quality, since the casting is carried out in contact with air.
To improve the quality of the steel, a casting method protected from air is used, .namely .casting with submerged nozzles and powders. According to this method, the liquid steel is introduced into the mould through a .
nozzle which is immersed in the liquid metal present in the mould. Contact with air and oxygen is presented by a layer of powder which covers the surface of the metal at the casting meniscus.
In this case, the casting is performed at a constant withdrawal speed. The steel level in the ingot mould is controlled by a stopper or a distributing slide valve.
In both casting methods, it is also known to improve the quality of the steel-by means of electromag-netic stirring, which, however, has to be adapted to the chosen casting method and to the intended qualities of the steel. Thus, for example, in the case of the casting of billets by the free-stream method, the main object _ 2 _ sought by the application of electromagnetic stirring in the ingot mould consists in improving the surface condi-tion of the billets by eliminating pinholes and slag incrustations. To achieve this, the rotational speed of the steel in the ingot mould at the meniscus level must be very high, hence the importance of the location of the inductor relative to the meniscus in respect of the surface condition of the billets.
In contrast, in the case of the casting of blooms i using a submerged nozzle and casting powder, it is advantageous to reduce the rotational speed at the meniscus level in order to prevent as fax as possible the casting powder from being carried away and to reduce wear v on the nozzle, by retaining as high a stirring intensity Z5 as possible below the meniscus. In other words, in free stream casting it is preferable for the inductor to be located in the upper region of the mould, whereas in submerged-nozzle casting it is preferable for the induc tor to be disposed at a lower level. This is the reason why, in order to benefit fully from the advantages offered by electromagnetic stirring in the ingot mould, it is preferable to have available two different instal-lotions in order to implement each of the two. casting methods.
The object of the present invention is to provide a new electromagnetic stirring device in an ingot mould which permits implementation of the two casting methods in the same installation.
To achieve this objective, the present invention proposes an electromagnetic stirring device of the kind described in the preamble, which is essentially charac terised in that the inductor is disposed outside the mould and is vertically displaceable relative thereto..
According to an advantageous embodiment, the mould is surrounded by a first coaxial tube made of steel which, in turn, is disposed inside a second coaxial tube around which the inductor is mounted, whilst the annular spaces betweenythe two tubes and between the mould and the first tube are traversed by a cooling liquid.
The device may be equipped with a detector for detecting the steel level in the mould, consisting of a cylindrical radiation source mounted inside the second tube and associated with a scintillometer mounted an the opposite side of the said second tube.
The radiation source is preferably located inside a protective cylindrical jacket made of lead, provided with a radial slot and movable about the axis of the said source between an angular position in which the slot is directed to=,~ards the mould and an i..noperative angular position in which the slat is directed towards a cylind-rical block made of lead which extends along the said jacket.
Theingot mould, which consists of the mould, the inductor and the two tubes, can be integral with a set of underlying rollers and dismountable as a unit therewith.
Other features and characteristics will a>merge from the xietailed description of an advantageous embodi ment given below, by way of illustration, with reference to the accompanying drawings in which:
figure 1 shows diagrammatically a vertical section ,of a device according to the present invention illustrating the: inductor in the position for free-stream ca-st~:ng;
~5 Figure 2 shows a similar view to that of figure 1, t~hP inductor being in the position for submerged-nozzle casting, and i~igure 3 shows diagrammatically a horizontal section through the mould and the radiation source.
Figures 1 and 2 show an ingot mould i4 contained in a metallic housing 12. The ingot mould 10 comprises essentially a vertical tubular mould I4 containing liquid metal 16, which is poured from a tundish (not shown). The molten metal 16 solidifies progressively in this mould and the metal blank is withdrawn therefrom, passing through a set 18 of underlying rollers for guiding and shaping the metal blanks. According to a preferred embodiment of the invention, the set of rollers 18 is integral with the ingot mould l0 and can be dismounted as _ ~ _ ~~Q~~~~~
a unit therewith.
The mould 14, which generally co:~sists of a copper tube, is surrounded by a coaxial steel tube 20 which forms with the mould an annular cylindrical space 22 in which a liquid for cooling the mould 14 circulates.
Another 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 tyro tubes 20 and 26.
The Gaoling water enters the circuit at 30 and then the annular interstice 22 between the mould 14 and the tube 20. This space is very narrow ::o ensure rapid circulation and efficient cooling in the ~~uld 14. The cooling water thus rises alang the mould, flows over the top of the tube 20 and fills the annular apace 24. The cooling water leaves this space 24 by flowing over into a vertical pipe (not shown) arranged along the inner wall of 'the tube 26 and then through an outlet:.pipe.
Located around the outer tube .26 is an electro magnetic inductor 32, known per se, fox ~o~~fectinc~ the electromagnetic stirring of the metal 16 i°n :the mould 14.
The electromagnetic device 32 can consist of one or more inductors.
In accordance with the present .,invention, the inductor 32 is not fixed but can be displaced vertically between a raised position according to .Figure 1 for free stream casting and a lower~pos.ition according to Figure 2 for submerged-nozzle casting. The means for displacing the inductor 32 can consist of any suitable means known per se, for example three vertical threaded rods which support the inductor 32 and which can be rotated syn-chronously by a suitable motor.
According to a simple and efficient embodiment, the inductor 32 slides vertically in a plurality of, for example three, guide rods 50, the vertical movement being effected by means of a crane (not shown). In the example shown, the rods 50 are designed to position the inductor 32 in three different vertical positions defined by three upper radial perforations 52 and two lower notches 54.
.~ ~t~40~~~.~
When the inductor 32 is raised into the position according to Figure 1, it can be held there by manually engaging a claw (not shown) in 'the upper notch 54 and locked with the aid of a key (not shown) engaged through 5 the upper perforation.
2n the lower position, the inductor 32 rests on the bottom of the ingot mould 10 and e:an be keyed by the lower perforation 52. Although the embodiment illustrated permits a third intermediate position (not shown), it is, of course, possible to provide only two positions or to provide more positions.
The inductor 32 can also comprise a separate cooling circuit, which is indicated by the arrows 34 and 36 for the admission and the outlet of cooling water.
I5 Another feature of the present invention is the monitoring of the meniscus level of the liquid metal in the mould I4. This monitoring is carried out with the aid of a radiation source 38, for example using cobalt, which is arranged in the upper region of the annular space 24 and is associated with a scintillome~ter 40 disposed on the opposite side of the mould I4. To reduce the risks of exposure of personnel, this radiation source 38 is located inside a protective cylindrical jacket 42, as shown in greater detail and enlarged in Figure 3. This protective jacket 42, which can, for example, be made of lead, has a vertical slot 44 for the passage of .the radiation. This protective jacket 42 can be rotated about a vertical axis between an operative position shown in Figure 3, in which the slot 44 is directed towards the mould 14, and an inoperative position (not shown), in which the slot 44 is directed against a vertical absorp-tion block 46. By virtue of this arrangement, it is possible for an operator to carry out work on the mould 14 without being exposed to the radiation from the source 38, this radiation being absorbed by the protective block 46.
The actual measurement of the level will not be explained in greater detail in view of the fact that the use of a radiation source for measuring a level is known par se.
Claims (9)
1 Claims 1. A continuous casting mould assembly comprising:
a continuous casting mould consisting of a vertical mould tube for receiving a molten metal and a cooling circuit surrounding said vertical mould tube for cooling the latter;
an electromagnetic inductor surrounding said continuous casting mould for producing a gyratory movement of said molten metal in said mould tube, said electromagnetic inductor including its separate cooling circuit;
wherein said electromagnetic inductor is arranged outside said continuous casting mould so as to be vertically movable along the latter.
a continuous casting mould consisting of a vertical mould tube for receiving a molten metal and a cooling circuit surrounding said vertical mould tube for cooling the latter;
an electromagnetic inductor surrounding said continuous casting mould for producing a gyratory movement of said molten metal in said mould tube, said electromagnetic inductor including its separate cooling circuit;
wherein said electromagnetic inductor is arranged outside said continuous casting mould so as to be vertically movable along the latter.
2. The continuous casting mould assembly according to Claim 1, comprising:
vertical guide rods for guiding said electromagnetic inductor vertically along said continuous casting mould.
vertical guide rods for guiding said electromagnetic inductor vertically along said continuous casting mould.
3. The continuous casting mould assembly according to Claim 2, comprising:
support means for supporting said electromagnetic inductor on said vertical guide rods in different predetermined vertical positions.
support means for supporting said electromagnetic inductor on said vertical guide rods in different predetermined vertical positions.
4. The continuous casting mould assembly according to Claim 1, comprising:
vertical threaded rods supporting said electromagnetic inductor; and a motor that is connected to said vertical threaded rods so as to be capable of rotating the latter in synchronism, thereby vertically moving said electro-magnetic inductor along said continuous casting mould.
vertical threaded rods supporting said electromagnetic inductor; and a motor that is connected to said vertical threaded rods so as to be capable of rotating the latter in synchronism, thereby vertically moving said electro-magnetic inductor along said continuous casting mould.
5. The continuous casting mould assembly according to any one of Claims 1 to 4, comprising:
a set of subjacent rollers that is fixed to said continuous casting mould so as to be dismountable en bloc with the latter.
a set of subjacent rollers that is fixed to said continuous casting mould so as to be dismountable en bloc with the latter.
6. The continuous casting mould assembly according to any one of Claims 1 to 5, further comprising:
a level-detector for detecting the level of the metal in said mould tube, said level detector including a source of radiation mounted within said cooling circuit.
a level-detector for detecting the level of the metal in said mould tube, said level detector including a source of radiation mounted within said cooling circuit.
7. The continuous casting mould assembly according to Claim 6, wherein:
said level-detector further includes a scintillation counter, said source of radiation is located on one side of said mould tube, and said scintillation counter is located on the opposite side of said mould tube.
said level-detector further includes a scintillation counter, said source of radiation is located on one side of said mould tube, and said scintillation counter is located on the opposite side of said mould tube.
8. The continuous casting mould assembly according to Claim 6 or 7, wherein:
said source of radiation is equipped with a cylindrical protective jacket ab-sorbing the radioactive radiation, and said protective jacket has a longitudinal slit for the passage of radiation en-ergy emitted by said source of radiation.
said source of radiation is equipped with a cylindrical protective jacket ab-sorbing the radioactive radiation, and said protective jacket has a longitudinal slit for the passage of radiation en-ergy emitted by said source of radiation.
9. The continuous casting mould assembly according to Claim 8, wherein:
said level-detector further includes a radiation absorption block; and said cylindrical protective jacket is rotatable about a longitudinal axis of the source of radiation between a first position, in which said longitudinal slit is directed towards said mould tube, and a second position, in which said lon-gitudinal slit is directed towards said absorption block.
said level-detector further includes a radiation absorption block; and said cylindrical protective jacket is rotatable about a longitudinal axis of the source of radiation between a first position, in which said longitudinal slit is directed towards said mould tube, and a second position, in which said lon-gitudinal slit is directed towards said absorption block.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU87914A LU87914A1 (en) | 1991-04-03 | 1991-04-03 | ELECTROMAGNETIC LINGOTINE BREWING DEVICE |
| LU87914 | 1991-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2040830A1 CA2040830A1 (en) | 1992-10-04 |
| CA2040830C true CA2040830C (en) | 2003-08-19 |
Family
ID=19731286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002040830A Expired - Lifetime CA2040830C (en) | 1991-04-03 | 1991-04-19 | Electromagnetic stirring device in an ingot mould |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP0511465B2 (en) |
| AT (2) | ATE158525T1 (en) |
| CA (1) | CA2040830C (en) |
| DE (2) | DE69227206T2 (en) |
| ES (2) | ES2108054T5 (en) |
| LU (1) | LU87914A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964988A (en) * | 2016-03-19 | 2016-09-28 | 上海大学 | Method for refining metal solidification structure through mobile pulse magneto oscillation |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1288900B1 (en) * | 1996-05-13 | 1998-09-25 | Danieli Off Mecc | CONTINUOUS CASTING PROCESS WITH BUTTON MAGNETIC FIELD AND RELATIVE DEVICE |
| FR2893868B1 (en) * | 2005-11-28 | 2008-01-04 | Rotelec Sa | ADJUSTING THE ELECTROMAGNETIC BREWING MODE ON THE HEIGHT OF A CONTINUOUS CASTING LINGOTIERE |
| CN109746404B (en) * | 2019-03-08 | 2021-05-18 | 石家庄爱迪尔电气有限公司 | Electromagnetic stirring casting equipment convenient to maintain and process |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT185038B (en) * | 1951-03-16 | 1956-03-26 | Boehler & Co Ag Geb | Process for the cooling of continuous casting molds |
| US3153820A (en) * | 1961-10-09 | 1964-10-27 | Charles B Criner | Apparatus for improving metal structure |
| DE1290303B (en) † | 1964-08-22 | 1969-03-06 | Schloemann Ag | Device for measuring the fill level of melt in a continuous casting mold |
| LU79721A1 (en) † | 1978-05-26 | 1979-12-06 | Arbed | IMPROVEMENT IN ELECTROROTATIVE CONTINUOUS CASTING FACILITIES |
| JPS5719141A (en) * | 1980-07-09 | 1982-02-01 | Mitsubishi Heavy Ind Ltd | Electromagnetic stirring device of continuous casting facility |
| FR2502996A1 (en) * | 1981-04-03 | 1982-10-08 | Rotelec Sa | ROTATING FIELD ELECTROMAGNETIC INDUCTOR AND CONTINUOUS CASTING LINGOTIERE EQUIPMENT FOR METALS THEREOF |
| LU84103A1 (en) | 1982-04-22 | 1984-03-02 | Arbed | AUTOMATIC SCRUBBER SCRAPING SYSTEM DURING METAL CASTING |
| SE441502B (en) * | 1984-03-19 | 1985-10-14 | Asea Ab | NIVAMETERS BY COCILLES FOR STRING |
| IT1181219B (en) * | 1984-09-17 | 1987-09-23 | Danieli Off Mecc | CONTINUOUS CASTING WITH MULTI-PURPOSE AGITATORS |
| JPS6360056A (en) † | 1986-08-29 | 1988-03-16 | Nisshin Steel Co Ltd | Method and mold for continuously casting stainless steel containing titanium |
| DE3730300A1 (en) † | 1987-09-10 | 1989-03-23 | Aeg Elotherm Gmbh | Method and apparatus for the electromagnetic stirring of metal melts in a continuous casting mould |
| DE3819493A1 (en) * | 1988-06-08 | 1989-12-14 | Voest Alpine Ind Anlagen | KNUEPPEL- or SPREAD BLOCK CONTINUOUS CHOCOLATE |
| JPH0351954U (en) † | 1989-09-20 | 1991-05-21 | ||
| GB9003196D0 (en) * | 1990-02-13 | 1990-04-11 | Davy Mckee Sheffield | Continuous casting |
-
1991
- 1991-04-03 LU LU87914A patent/LU87914A1/en unknown
- 1991-04-19 CA CA002040830A patent/CA2040830C/en not_active Expired - Lifetime
-
1992
- 1992-02-21 AT AT92102888T patent/ATE158525T1/en active
- 1992-02-21 EP EP92102888A patent/EP0511465B2/en not_active Expired - Lifetime
- 1992-02-21 ES ES92102888T patent/ES2108054T5/en not_active Expired - Lifetime
- 1992-02-21 EP EP97100231A patent/EP0778098B1/en not_active Expired - Lifetime
- 1992-02-21 DE DE69227206T patent/DE69227206T2/en not_active Expired - Lifetime
- 1992-02-21 AT AT97100231T patent/ATE171656T1/en active
- 1992-02-21 ES ES97100231T patent/ES2123347T3/en not_active Expired - Lifetime
- 1992-02-21 DE DE69222348T patent/DE69222348T3/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105964988A (en) * | 2016-03-19 | 2016-09-28 | 上海大学 | Method for refining metal solidification structure through mobile pulse magneto oscillation |
| CN105964988B (en) * | 2016-03-19 | 2019-04-02 | 上海大学 | Mobile model pulse magneto vibrates thinning metal solidification texture method |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69222348T3 (en) | 2004-07-22 |
| EP0511465A2 (en) | 1992-11-04 |
| DE69227206T2 (en) | 1999-04-15 |
| DE69222348T2 (en) | 1998-02-26 |
| DE69227206D1 (en) | 1998-11-05 |
| EP0778098B1 (en) | 1998-09-30 |
| LU87914A1 (en) | 1992-11-16 |
| ES2108054T3 (en) | 1997-12-16 |
| ES2123347T3 (en) | 1999-01-01 |
| EP0778098A3 (en) | 1997-10-08 |
| EP0778098A2 (en) | 1997-06-11 |
| EP0511465B1 (en) | 1997-09-24 |
| EP0511465A3 (en) | 1993-04-21 |
| DE69222348D1 (en) | 1997-10-30 |
| ES2108054T5 (en) | 2004-07-01 |
| CA2040830A1 (en) | 1992-10-04 |
| ATE171656T1 (en) | 1998-10-15 |
| ATE158525T1 (en) | 1997-10-15 |
| EP0511465B2 (en) | 2003-12-03 |
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