CA1239523A - Method of casting melt into a plurality of continuous casting moulds - Google Patents
Method of casting melt into a plurality of continuous casting mouldsInfo
- Publication number
- CA1239523A CA1239523A CA000489950A CA489950A CA1239523A CA 1239523 A CA1239523 A CA 1239523A CA 000489950 A CA000489950 A CA 000489950A CA 489950 A CA489950 A CA 489950A CA 1239523 A CA1239523 A CA 1239523A
- Authority
- CA
- Canada
- Prior art keywords
- level
- filling
- withdrawing
- levels
- mould
- 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
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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
- B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
- B22D11/186—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using electric, magnetic, sonic or ultrasonic means
-
- 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
- B22D11/14—Plants for continuous casting
- B22D11/147—Multi-strand plants
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/161—Controlling or regulating processes or operations for automatic starting the casting process
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
ABSTRACT
Method of Casting Melt into a Plurality of Continuous Casting Moulds A method of pouring a molten metal from an intermediate vessel 3 into a plurality of continuous casting moulds A,B
and C through respective discharge valves 4 and withdrawing all the castings 18 from the moulds with a common with-drawing unit 12,13 includes opening all the valves 4 to initiate the pouring process, and monitoring the filling level 20 within each mould in a measuring zone 9. Each valve 4 is throttled when the filling level in the associated mould reaches a first threshold level 21 and the withdrawing unit is switched on when all the filling levels are substantially the same or when the first of the filling levels reaches a second threshold level 22 above the first threshold level, whichever occurs first. Each discharge valve is adjusted when the filling level in the associated mould reaches a desired level 8 above the second threshold level so as to maintain the filling level substantially at the desired level.
Method of Casting Melt into a Plurality of Continuous Casting Moulds A method of pouring a molten metal from an intermediate vessel 3 into a plurality of continuous casting moulds A,B
and C through respective discharge valves 4 and withdrawing all the castings 18 from the moulds with a common with-drawing unit 12,13 includes opening all the valves 4 to initiate the pouring process, and monitoring the filling level 20 within each mould in a measuring zone 9. Each valve 4 is throttled when the filling level in the associated mould reaches a first threshold level 21 and the withdrawing unit is switched on when all the filling levels are substantially the same or when the first of the filling levels reaches a second threshold level 22 above the first threshold level, whichever occurs first. Each discharge valve is adjusted when the filling level in the associated mould reaches a desired level 8 above the second threshold level so as to maintain the filling level substantially at the desired level.
Description
~Z395;~:~
Method of Casting Melt into a Plurality of Continuous Casting Mounds The invention relates to a method of pouring a molten metal, in particular a steel melt, out of an intermediate vessel into a plurality of continuous casting rnoulds and is concerned with that type of such 5. method in which the filling level in each mound is maintained within a measuring zone at a desired level by controlling respective discharge valves associated with the mounds and the resultant castings are withdrawn by a common withdrawing unit at the same speed.
10. Such a method is disclosed in European Patent No. 0019114 in which in order to facilitate the commencement of the pouring it is recommended that the filling levels or the devices which measure the filling levels in the mounds be given a very large 15. height range in order to be able to compare the speed of rise of the filling~evels in the mounds with one another. This comparison should give an early indication if the supply volumes to the mounds differ and actuate control devices which are of electromagnetic 20. type or operate with gas nozzles and serve as discharge valves before reaching the desired~fillina level with the purpose of enabling an unimpeded commencement of pouring. There is however no information given as to how such a procedure is to be conducted.
25. It is an object of the present invention to provide an improved method of pouring a plurality of castings which are withdrawn at the same velocity in the initial phase which is both simple and has an improved operational reliability.
30- According to the present invention there is provided a method of pouring a molten metal from an intermediate vessel into a plurality of continuous casting mounds through respective discharge valves and withdrawing all the castings from the mounds with 5. common withdrawing means at the same speed, which includes opening all the valves to initiate the pouring process, monitoring the filling level within each mound in a measuring zone, throttling the discharge valve associated with that mound whose filling level is the 10. first to reach a first predetermined threshold level within the measuring zone, throttling the discharge valve associated with the or each mound whose filling level becomes equal to that of the said first mound, switching on the withdrawing means when all the filling 15. levels are substantially the same or when the first of the filling levels reaches a second predetermined threshold level within the measuring zone above the first predator-mined threshold level, and adjusting the throttling of each discharge valve when the filling level in the 20. associated mound reaches a desired level within the measuring zone above the second predetermined threshold level so as to maintain the said filling level substantially at the said desired level.
By use of the method in accordance with the 25. invention the filling levels of all the mounds may be brought rapidly to a level at which the withdrawing means may be switched on and at which the filling levels may be readily brought up to and maintained at the desired level, 30. It is preferred that the method including closing the discharge valve associated with any mound in which the filling level has not reached the first predetermined threshold level at the time when the withdrawing means is started. This preferred step lX3~35'~3 ensures that -the melt cannot run straight out of a mound before a satisfactory casting skin has formed since this would damage parts of the installation, for instance a secondary cooling unit, and prevent 5, the removal from the installation of intact castings.
It is preferred that the first and second predetermined threshold levels and the desired level are situated substantially 10%, 70% and 85% respectively, of the way up the measuring zone. It will however be 10. appreciated that these figures may be varied to suit the particular operational requirements.
Further features and details of the invention will be apparent from the following description of gent-awn specific embodiments which is given by way of 15. example with reference to the accompanying drawings, in which:-Figure 1 is a diagrammatic view of a multiple continuous casting installation at the beginning of pouring; and 20. Figures 2 to 4 diagrammatically illustrate different possible operational sequences during the beginning of pouring.
Figure 1 shows a casting ladle 1 from which steel melt is supplied via a controllable discharge valve 2 25. to an intermediate vessel 3 which for its part has three discharge valves in the form of sliding gate valves 4 which control the supply of the melt through respective pouring tubes 5 into three continuous casting mounds AHAB and C into which the free ends of the pouring 30~ tubes extend. Each sliding gate valve is mechanically connected to a positioning member 6 whose operational position at any time is detected by a position sensor 7.
1~3~3~3 The liquid or filling level in each mound is detected within a measuring zone 9 by a respective level measuring device comprising a transmitter 10 and a receiver 11. The desired filling level of each 5. mound is set to be about 85~ of the way up the measuring zones. In normal operation, the position of each sliding gate valve is controlled in dependence on whether the actual liquid level in the associated mound is above or below the desired level.
10. Downstream of the mounds is a secondary cooling device which is not illustrated for the sake of simplicity and a withdrawing unit common to all the castings 18 which includes drive rolls 12, a drive motor 13, a drive controller 14 and a withdrawing 15. velocity sensor 15. The latter supplies signals indicative of the withdrawing velocity both to the drive controller 14 and to a processor 16 which also receives and processes signals from the position sensors 7 indicative of the degree of opening of the 20. sliding gate valves 4 and signals from the receivers 11 indicative of the actual filling levels in the mounds.
The data obtained is fed to a control computer 17 integrated in the processor 16 which gives appropriate control commands to the positioning members 6 of the 25. sliding gate valves 4 and to the controller 14 of the withdrawing unit. The withdrawing velocity is set as a constant, i.e. the castings 18 formed in the mounds are withdrawn by the common withdrawing unit at a constant velocity, which means that the filling levels 30. in the mounds are controlled only from the supply side by means of the sliding gate valves 4. For this purpose the sliding gate valves 4 are maintained in normal X;~5;~3 pouring operation in throttled positions in order to enable the flow through them to be increased as well as decreased.
At the commencement of pouring the withdrawing drive 13 is switched off and cold castings 18 are introduced into 5. the mounds. The pouring begins by opening the sliding gate valves 4 which are fully or only partly opened in dependence on the format of the castings to be cast. The melt rises to levels 20 above the cold casting heads 19 in the mounds.
These levels 20 are, however seldom at the same level.
10. In particular, the flow passages may have differing cross-sectional areas which result in differing discharge rates from the pouring tubes 5 because constrictions occur in the discharge or flow passages of the intermediate vessel 3 and the sliding gate valves 4, for instance by 15. "bear" formation as a consequence of solidification of melt on regions of the passage wall which are not sufficiently hot. Also the viscosity of the melt may be increased by being cooled when flowing a greater distance in the inter-mediate vessel.
20. An equalization of the different filling levels 20 is effected by throttling that sliding gate valve 4 in whose associated mound the filling level first reaches a thresh-old level 21 which is approximately 10% of the way up the measuring zone 9. When the filling levels of thither 25. mounds become equal to that in the first said mound their valves 4 are also throttled so that the associated filling levels rise at the same rate as that in the first said mound.
The filling levels are monitored by the measuring devices 10,11 which control the sliding gate valves 4 by means of 30- the processor 16 and the control computer 17. The equals-lion of the filling levels 20 in the mounds is also monitored and when this is complete the control computer 17 switches 12395~3 on the withdrawing drive motor 13. The filling levels then oscillate about and finally settle down at the desired filling level 8. If all the filling levels do not become equal, or if only two of them become equal, the control 5. signal to switch on the withdrawing drive motor 13 is issued at the latest at a further threshold level 22 situated within the measuring zone 9 below the desired filling level 8 when the first filling level 20 reaches it. At the same time those sliding gate valves 4 associated with mounds in 10. which the filling level 20 is still below the threshold level 21 receive closing commands and are closed.
In Figures 2 to 4 the pouring is continued until the desired filling level 8 has been achieved.
It may be seen from Figure 2 that the threshold level 15. 21 was exceeded first by the liquid level in the mound A
in time At, then by the level in the mound B in time By and finally by the level C in time Ct. The sliding gate valve 4 of the mound A is moved into a predetermined throttled position at the threshold level 21 and this 20. gives the levels in the mounds B and C the opportunity to catch up, which occurs at points 30 and 31 respectively.
At the points 30 and 31 the valves 4 associated with the mounds B and C respectively are throttled. At point 31 all three filling levels are thus at the same level 25. and the withdrawing drive motor 13 is switched on, conveniently with 70% of its normal velocity. As soon as the withdrawing drive is switched on the filling levels in the three mounds rise together, but more slowly, and move up a line 32 of reduced gradient until at time t the desired filling level 8 is reached thereafter the filling levels are maintained substantially at the ~3~52.~
desired level.
In the embodiment of Figure 3 the filling levels Aye and C20 become equal at the point 33 but the level C20 does not catch them up even after all the filling 5. levels have passed the threshold level 21. After the point 33 the two filling levels C20 and Aye rise together until they reach the second threshold level 22, at which the withdrawing drive unit 13 is switched on. The levels C20 and Aye then reach and remain at the 10. desired filling level 8. The rate of rise of the level B20 decreases at the point 34, i.e. a-t the time when the withdrawing drive unit is switched on and then reaches the desired level 8 after a pouring time t.
The beginning of pouring follows a similar course 15- in the embodiment of Figure 4 in which the filling levels B20 and Aye pass through the threshold level 21 at times By and At, at which the valves 4 associated with the mound B is throttled. The two levels then become equal at the point 35, at which the valve associated with the mound 20- A is throttled, and thereafter rise together to the second threshold level 22 and then to the desired filling level 8 in time t. At the time at which the withdrawing drive unit 13 is switched on by the levels B20 and Aye having reached the threshold level 22 the filling level C20 25. has not risen above the critical threshold level 21 but has remained actually below the bottom end of the measuring zone 9 as a result of which the sliding gate valve C4 has been automatically closed, in the present case after time Ct.
3~5X3 With the monitoring of the filling levels described above continuous casting installations with a withdrawing unit for simultaneously producing a plurality of castings can be brought up to the 5. desired filling levels in an operationally safe manner.
Method of Casting Melt into a Plurality of Continuous Casting Mounds The invention relates to a method of pouring a molten metal, in particular a steel melt, out of an intermediate vessel into a plurality of continuous casting rnoulds and is concerned with that type of such 5. method in which the filling level in each mound is maintained within a measuring zone at a desired level by controlling respective discharge valves associated with the mounds and the resultant castings are withdrawn by a common withdrawing unit at the same speed.
10. Such a method is disclosed in European Patent No. 0019114 in which in order to facilitate the commencement of the pouring it is recommended that the filling levels or the devices which measure the filling levels in the mounds be given a very large 15. height range in order to be able to compare the speed of rise of the filling~evels in the mounds with one another. This comparison should give an early indication if the supply volumes to the mounds differ and actuate control devices which are of electromagnetic 20. type or operate with gas nozzles and serve as discharge valves before reaching the desired~fillina level with the purpose of enabling an unimpeded commencement of pouring. There is however no information given as to how such a procedure is to be conducted.
25. It is an object of the present invention to provide an improved method of pouring a plurality of castings which are withdrawn at the same velocity in the initial phase which is both simple and has an improved operational reliability.
30- According to the present invention there is provided a method of pouring a molten metal from an intermediate vessel into a plurality of continuous casting mounds through respective discharge valves and withdrawing all the castings from the mounds with 5. common withdrawing means at the same speed, which includes opening all the valves to initiate the pouring process, monitoring the filling level within each mound in a measuring zone, throttling the discharge valve associated with that mound whose filling level is the 10. first to reach a first predetermined threshold level within the measuring zone, throttling the discharge valve associated with the or each mound whose filling level becomes equal to that of the said first mound, switching on the withdrawing means when all the filling 15. levels are substantially the same or when the first of the filling levels reaches a second predetermined threshold level within the measuring zone above the first predator-mined threshold level, and adjusting the throttling of each discharge valve when the filling level in the 20. associated mound reaches a desired level within the measuring zone above the second predetermined threshold level so as to maintain the said filling level substantially at the said desired level.
By use of the method in accordance with the 25. invention the filling levels of all the mounds may be brought rapidly to a level at which the withdrawing means may be switched on and at which the filling levels may be readily brought up to and maintained at the desired level, 30. It is preferred that the method including closing the discharge valve associated with any mound in which the filling level has not reached the first predetermined threshold level at the time when the withdrawing means is started. This preferred step lX3~35'~3 ensures that -the melt cannot run straight out of a mound before a satisfactory casting skin has formed since this would damage parts of the installation, for instance a secondary cooling unit, and prevent 5, the removal from the installation of intact castings.
It is preferred that the first and second predetermined threshold levels and the desired level are situated substantially 10%, 70% and 85% respectively, of the way up the measuring zone. It will however be 10. appreciated that these figures may be varied to suit the particular operational requirements.
Further features and details of the invention will be apparent from the following description of gent-awn specific embodiments which is given by way of 15. example with reference to the accompanying drawings, in which:-Figure 1 is a diagrammatic view of a multiple continuous casting installation at the beginning of pouring; and 20. Figures 2 to 4 diagrammatically illustrate different possible operational sequences during the beginning of pouring.
Figure 1 shows a casting ladle 1 from which steel melt is supplied via a controllable discharge valve 2 25. to an intermediate vessel 3 which for its part has three discharge valves in the form of sliding gate valves 4 which control the supply of the melt through respective pouring tubes 5 into three continuous casting mounds AHAB and C into which the free ends of the pouring 30~ tubes extend. Each sliding gate valve is mechanically connected to a positioning member 6 whose operational position at any time is detected by a position sensor 7.
1~3~3~3 The liquid or filling level in each mound is detected within a measuring zone 9 by a respective level measuring device comprising a transmitter 10 and a receiver 11. The desired filling level of each 5. mound is set to be about 85~ of the way up the measuring zones. In normal operation, the position of each sliding gate valve is controlled in dependence on whether the actual liquid level in the associated mound is above or below the desired level.
10. Downstream of the mounds is a secondary cooling device which is not illustrated for the sake of simplicity and a withdrawing unit common to all the castings 18 which includes drive rolls 12, a drive motor 13, a drive controller 14 and a withdrawing 15. velocity sensor 15. The latter supplies signals indicative of the withdrawing velocity both to the drive controller 14 and to a processor 16 which also receives and processes signals from the position sensors 7 indicative of the degree of opening of the 20. sliding gate valves 4 and signals from the receivers 11 indicative of the actual filling levels in the mounds.
The data obtained is fed to a control computer 17 integrated in the processor 16 which gives appropriate control commands to the positioning members 6 of the 25. sliding gate valves 4 and to the controller 14 of the withdrawing unit. The withdrawing velocity is set as a constant, i.e. the castings 18 formed in the mounds are withdrawn by the common withdrawing unit at a constant velocity, which means that the filling levels 30. in the mounds are controlled only from the supply side by means of the sliding gate valves 4. For this purpose the sliding gate valves 4 are maintained in normal X;~5;~3 pouring operation in throttled positions in order to enable the flow through them to be increased as well as decreased.
At the commencement of pouring the withdrawing drive 13 is switched off and cold castings 18 are introduced into 5. the mounds. The pouring begins by opening the sliding gate valves 4 which are fully or only partly opened in dependence on the format of the castings to be cast. The melt rises to levels 20 above the cold casting heads 19 in the mounds.
These levels 20 are, however seldom at the same level.
10. In particular, the flow passages may have differing cross-sectional areas which result in differing discharge rates from the pouring tubes 5 because constrictions occur in the discharge or flow passages of the intermediate vessel 3 and the sliding gate valves 4, for instance by 15. "bear" formation as a consequence of solidification of melt on regions of the passage wall which are not sufficiently hot. Also the viscosity of the melt may be increased by being cooled when flowing a greater distance in the inter-mediate vessel.
20. An equalization of the different filling levels 20 is effected by throttling that sliding gate valve 4 in whose associated mound the filling level first reaches a thresh-old level 21 which is approximately 10% of the way up the measuring zone 9. When the filling levels of thither 25. mounds become equal to that in the first said mound their valves 4 are also throttled so that the associated filling levels rise at the same rate as that in the first said mound.
The filling levels are monitored by the measuring devices 10,11 which control the sliding gate valves 4 by means of 30- the processor 16 and the control computer 17. The equals-lion of the filling levels 20 in the mounds is also monitored and when this is complete the control computer 17 switches 12395~3 on the withdrawing drive motor 13. The filling levels then oscillate about and finally settle down at the desired filling level 8. If all the filling levels do not become equal, or if only two of them become equal, the control 5. signal to switch on the withdrawing drive motor 13 is issued at the latest at a further threshold level 22 situated within the measuring zone 9 below the desired filling level 8 when the first filling level 20 reaches it. At the same time those sliding gate valves 4 associated with mounds in 10. which the filling level 20 is still below the threshold level 21 receive closing commands and are closed.
In Figures 2 to 4 the pouring is continued until the desired filling level 8 has been achieved.
It may be seen from Figure 2 that the threshold level 15. 21 was exceeded first by the liquid level in the mound A
in time At, then by the level in the mound B in time By and finally by the level C in time Ct. The sliding gate valve 4 of the mound A is moved into a predetermined throttled position at the threshold level 21 and this 20. gives the levels in the mounds B and C the opportunity to catch up, which occurs at points 30 and 31 respectively.
At the points 30 and 31 the valves 4 associated with the mounds B and C respectively are throttled. At point 31 all three filling levels are thus at the same level 25. and the withdrawing drive motor 13 is switched on, conveniently with 70% of its normal velocity. As soon as the withdrawing drive is switched on the filling levels in the three mounds rise together, but more slowly, and move up a line 32 of reduced gradient until at time t the desired filling level 8 is reached thereafter the filling levels are maintained substantially at the ~3~52.~
desired level.
In the embodiment of Figure 3 the filling levels Aye and C20 become equal at the point 33 but the level C20 does not catch them up even after all the filling 5. levels have passed the threshold level 21. After the point 33 the two filling levels C20 and Aye rise together until they reach the second threshold level 22, at which the withdrawing drive unit 13 is switched on. The levels C20 and Aye then reach and remain at the 10. desired filling level 8. The rate of rise of the level B20 decreases at the point 34, i.e. a-t the time when the withdrawing drive unit is switched on and then reaches the desired level 8 after a pouring time t.
The beginning of pouring follows a similar course 15- in the embodiment of Figure 4 in which the filling levels B20 and Aye pass through the threshold level 21 at times By and At, at which the valves 4 associated with the mound B is throttled. The two levels then become equal at the point 35, at which the valve associated with the mound 20- A is throttled, and thereafter rise together to the second threshold level 22 and then to the desired filling level 8 in time t. At the time at which the withdrawing drive unit 13 is switched on by the levels B20 and Aye having reached the threshold level 22 the filling level C20 25. has not risen above the critical threshold level 21 but has remained actually below the bottom end of the measuring zone 9 as a result of which the sliding gate valve C4 has been automatically closed, in the present case after time Ct.
3~5X3 With the monitoring of the filling levels described above continuous casting installations with a withdrawing unit for simultaneously producing a plurality of castings can be brought up to the 5. desired filling levels in an operationally safe manner.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of pouring a molten metal from an inter-mediate vessel into a plurality of continuous casting moulds through respective discharge valves and withdrawing all the castings from the moulds with common withdrawing 5. means at the same speed, which includes opening all the valves to initiate the pouring process, monitoring the filling level within each mould in a measuring zone, throttling the discharge valve associated with that mould whose filling level is the first to reach a first 10. predetermined threshold level within the measuring zone, throttling the discharge valve associated with the or each mould whose filling level becomes equal to that of the said first mould, switching on the withdrawing means when all the filling levels are substantially the same or 15. when the first of the filling levels reaches a second predetermined threshold level within the measuring zone above the first predetermined threshold level, and adjusting the throttling of each discharge valve when the filling level in the associated mould reaches a 20. desired level within the measuring zone above the second predetermined threshold level so as to maintain the said filling level substantially at the said desired level.
2. A method as claimed in claim 1 which includes 25. closing the discharge valve associated with any mould in which the filling level has not reached the first predetermined threshold level at the time when the withdrawing means is switched on.
3. A method as claimed in claim 1 or claim 2 in which the first and second predetermined threshold levels and the desired level are situated substantially 10%, 70%
and 85%, respectively, of the way up the measuring zone.
and 85%, respectively, of the way up the measuring zone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3432611.1 | 1984-09-05 | ||
| DE3432611A DE3432611C2 (en) | 1984-09-05 | 1984-09-05 | Procedure for starting up a continuous caster with several strands |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1239523A true CA1239523A (en) | 1988-07-26 |
Family
ID=6244691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000489950A Expired CA1239523A (en) | 1984-09-05 | 1985-09-04 | Method of casting melt into a plurality of continuous casting moulds |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPH0716774B2 (en) |
| AT (1) | AT391643B (en) |
| BE (1) | BE903179A (en) |
| CA (1) | CA1239523A (en) |
| CH (1) | CH668370A5 (en) |
| CS (1) | CS600085A3 (en) |
| DE (1) | DE3432611C2 (en) |
| ES (1) | ES8700989A1 (en) |
| FR (1) | FR2569588B1 (en) |
| GB (1) | GB2163983B (en) |
| IN (1) | IN164762B (en) |
| IT (1) | IT1185654B (en) |
| MX (1) | MX168192B (en) |
| PL (1) | PL147451B1 (en) |
| SE (1) | SE461258B (en) |
| SU (1) | SU1367846A3 (en) |
| ZA (1) | ZA856821B (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3538222A1 (en) * | 1985-10-26 | 1987-05-27 | Metacon Ag | METHOD FOR STARTING UP A CONTINUOUS CASTING SYSTEM WITH MULTIPLE STRINGS |
| DE3509932A1 (en) * | 1985-03-19 | 1986-10-02 | Metacon AG, Zürich | METHOD FOR STARTING UP A CONTINUOUS CASTING SYSTEM |
| JPS61273246A (en) * | 1985-05-28 | 1986-12-03 | Sumitomo Metal Ind Ltd | Control device for molten metal level in casting mold |
| JPS62183952A (en) * | 1986-02-07 | 1987-08-12 | Sumitomo Metal Ind Ltd | Control method for surface level of molten steel in mold |
| JPS62183951A (en) * | 1986-02-07 | 1987-08-12 | Sumitomo Metal Ind Ltd | Control method for surface level of molten steel in mold |
| JP2914817B2 (en) * | 1992-04-28 | 1999-07-05 | 新日本製鐵株式会社 | Missing casting method in continuous casting |
| CN102430728B (en) * | 2011-12-07 | 2013-07-10 | 中宁县锦宁铝镁新材料有限公司 | Multi-crystallizer horizontal continuous casting tundish and continuous casting process implemented by using same |
| FR3049881B1 (en) * | 2016-04-08 | 2018-04-06 | Constellium Issoire | SYSTEM FOR CONTROLLING THE CASTING OF A PRODUCT |
| CN105834388B (en) * | 2016-05-13 | 2017-09-29 | 北京首钢自动化信息技术有限公司 | A kind of double-current slab automatic water-replacing mouthful control method |
| CN107649657A (en) * | 2017-08-29 | 2018-02-02 | 武钢集团昆明钢铁股份有限公司 | A kind of small billet tundish stops the method poured |
| RU2697143C1 (en) * | 2017-12-19 | 2019-08-12 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Installation for continuous casting of flat ingots |
| CN111922311B (en) * | 2020-07-24 | 2022-04-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Tundish liquid level control method in continuous casting production process |
| CN112059135A (en) * | 2020-08-20 | 2020-12-11 | 张家港宏昌钢板有限公司 | Crystallizer molten steel level correction device and application method thereof |
| CN112157238B (en) * | 2020-09-11 | 2021-09-07 | 柳州钢铁股份有限公司 | Non-stop local overhauling method for double-flow slab caster |
| CN115780788B (en) * | 2022-12-29 | 2023-07-21 | 浙江鑫耐铝熔铸设备材料有限公司 | Pneumatic flashboard control device for controlling circulation of aluminum solution and control method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2351816B2 (en) * | 1972-10-17 | 1977-03-03 | Concast AG, Zürich (Schweiz); Schloemann-Siemag AG, 4000 Düsseldorf | PROCESS AND EQUIPMENT FOR REGULATING THE LEVEL OF THE MELT IN MOLDS OF CONTINUOUS CASTING PLANTS |
| JPS5477229A (en) * | 1977-11-22 | 1979-06-20 | Ishikawajima Harima Heavy Ind | Method and apparatus for controlling drawing speed and mold level in continuous casting machine |
| CH639575A5 (en) * | 1979-04-27 | 1983-11-30 | Concast Ag | METHOD AND DEVICE FOR CONTINUOUSLY MOLDING SEVERAL STRINGS. |
| EP0149447A3 (en) * | 1983-12-29 | 1986-10-22 | VOEST-ALPINE Aktiengesellschaft | Method of controlling the level in continuous casting moulds of a multiple-strand continuous casting plant, and arrangement for carrying out the method |
-
1984
- 1984-09-05 DE DE3432611A patent/DE3432611C2/en not_active Expired
-
1985
- 1985-07-23 IT IT21682/85A patent/IT1185654B/en active
- 1985-08-12 IN IN587/CAL/85A patent/IN164762B/en unknown
- 1985-08-13 PL PL1985254958A patent/PL147451B1/en unknown
- 1985-08-20 CH CH3569/85A patent/CH668370A5/en not_active IP Right Cessation
- 1985-08-20 CS CS856000A patent/CS600085A3/en unknown
- 1985-08-22 SU SU853942850A patent/SU1367846A3/en active
- 1985-08-28 AT AT0252385A patent/AT391643B/en not_active IP Right Cessation
- 1985-08-29 JP JP60188749A patent/JPH0716774B2/en not_active Expired - Lifetime
- 1985-09-03 SE SE8504088A patent/SE461258B/en not_active IP Right Cessation
- 1985-09-04 MX MX206518A patent/MX168192B/en unknown
- 1985-09-04 CA CA000489950A patent/CA1239523A/en not_active Expired
- 1985-09-04 ES ES546694A patent/ES8700989A1/en not_active Expired
- 1985-09-04 GB GB08521947A patent/GB2163983B/en not_active Expired
- 1985-09-04 FR FR8513147A patent/FR2569588B1/en not_active Expired
- 1985-09-04 BE BE0/215542A patent/BE903179A/en not_active IP Right Cessation
- 1985-09-05 ZA ZA856821A patent/ZA856821B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2163983A (en) | 1986-03-12 |
| FR2569588B1 (en) | 1988-09-23 |
| SE8504088L (en) | 1986-03-06 |
| ES546694A0 (en) | 1986-11-16 |
| GB2163983B (en) | 1988-01-13 |
| IT8521682A0 (en) | 1985-07-23 |
| IN164762B (en) | 1989-05-27 |
| PL147451B1 (en) | 1989-06-30 |
| PL254958A1 (en) | 1986-07-01 |
| ES8700989A1 (en) | 1986-11-16 |
| JPH0716774B2 (en) | 1995-03-01 |
| MX168192B (en) | 1993-05-10 |
| JPS6167551A (en) | 1986-04-07 |
| DE3432611A1 (en) | 1986-03-13 |
| AT391643B (en) | 1990-11-12 |
| ATA252385A (en) | 1990-05-15 |
| GB8521947D0 (en) | 1985-10-09 |
| DE3432611C2 (en) | 1986-09-04 |
| FR2569588A1 (en) | 1986-03-07 |
| CH668370A5 (en) | 1988-12-30 |
| ZA856821B (en) | 1986-04-30 |
| BE903179A (en) | 1985-12-31 |
| CS600085A3 (en) | 1992-02-19 |
| IT1185654B (en) | 1987-11-12 |
| SU1367846A3 (en) | 1988-01-15 |
| SE8504088D0 (en) | 1985-09-03 |
| SE461258B (en) | 1990-01-29 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |