EP1419023A1 - Method and device for transporting a dummy bar into a closing position at the exit of a continuous casting mould for liquid metal, especially for liquid steel - Google Patents
Method and device for transporting a dummy bar into a closing position at the exit of a continuous casting mould for liquid metal, especially for liquid steelInfo
- Publication number
- EP1419023A1 EP1419023A1 EP02751131A EP02751131A EP1419023A1 EP 1419023 A1 EP1419023 A1 EP 1419023A1 EP 02751131 A EP02751131 A EP 02751131A EP 02751131 A EP02751131 A EP 02751131A EP 1419023 A1 EP1419023 A1 EP 1419023A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- rollers
- pairs
- continuous casting
- strand
- 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.)
- Granted
Links
- 238000009749 continuous casting Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910001338 liquidmetal Inorganic materials 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 title claims description 9
- 239000007788 liquid Substances 0.000 title claims description 9
- 239000010959 steel Substances 0.000 title claims description 9
- 238000005266 casting Methods 0.000 claims abstract description 25
- 230000007480 spreading Effects 0.000 claims description 11
- 238000003892 spreading Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000003319 supportive effect Effects 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 240000000528 Ricinus communis Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
Definitions
- the invention relates to a method and a device for transporting a starting element into a closed position at the exit of a continuous casting coke for liquid metal, in particular for liquid steel, from which a casting strand connected to the starting element by casting around with the casting metal is transported out in the strand withdrawal direction through a support roller stand ,
- start-up line (dummy bar) is used to start the casting process in continuous casting plants.
- the start-up line can either run against the production direction through a (curved) part of the casting machine to the continuous casting mold from bottom to top or from above through the continuous casting mold e.g. from a trolley (JP-52 11 45 31 A).
- the entire start-up strand in the casting direction (production direction) is then guided through the strand, i.e. through a supporting roll stand.
- the front part of the start-up line is separated from the casting line and brought into a parking position next to or above the continuous casting line.
- the drive devices provided for the casting strand (driven support roller pairs) are used to drive the starting strand.
- the start-up line becomes unnecessarily long or the driven support roller pairs must be positioned in areas in which they are not required in the casting operation.
- Another disadvantage is the heavy weight of the start-up line, which, depending on the tion and length can weigh between 5 and 30 tons and at the top has the starting element for closing the continuous casting mold of about one ton weight.
- the invention has for its object to replace the cumbersome system described by a simpler and lighter.
- the object is achieved according to the invention in that a starting head is moved at overlapping intervals into the continuous casting mold via at least one entrained self-propelled, each supported on components of the supporting roll stand or on auxiliary devices, and in that the starting head with the connected casting strand from the oscillating continuous casting mold between non-driven back-up rolls is continuously transported in opposite movements via the self-propulsion.
- a heavy starting line is no longer required.
- a significant reduction in the total weight for the starting system is created.
- An improvement in leadership accuracy is achieved.
- the system can also achieve the conversion of existing systems with "from above introduction” or “from below introduction” and an associated increase in the main production time and a decoupling of the functions "promote hot strand” and "start casting". Another consequence is a reduction in the number of driven support rollers.
- step-up head is supported step-by-step via positive locking on a plurality of successive pairs of support rollers of the support roller stand.
- step of the procedure consists in that the starting head is moved forward or backward on the rollers of the supporting roller stand by means of spreading elements which are supported on the circumference of the supporting roller pairs and can be pivoted in or out.
- caterpillar-like movements can also be carried out in such a way that the starting head is moved forwards or backwards by means of spreading element pairs which are supported between two successive pairs of support rollers.
- Continuity of movement is achieved by shortening or lengthening a longitudinal connection between two pairs of expansion elements in the cycle.
- the device for the transport of a starting element into a closed position at the exit of a continuous casting mold for liquid metal, in particular for liquid steel, from which a casting strand connected to the starting element can be transported in the direction of withdrawal of the strand through a supporting roll stand in accordance with the invention in that a Starting head is connected in an articulated manner to at least two modules which can be adjusted in opposite directions in the direction of movement and are individually detectable on opposite pairs of support rollers of the support roller stand.
- the advantage is supporting one module or two modules while the other, e.g. the third module can be moved forward or back. Since these movements can merge into one another, there is a continuous movement each time the start-up head is retracted or removed.
- the device can be coupled to the support rollers of the support roller stand with little or no play, so that a largely uniform, jerk-free conveying movement occurs.
- each module on a frame formed from base bodies in opposite directions supports or can be pivoted out and that an actuator is provided for displacing the frame when the support elements are pivoted in between pairs of rollers of the support roller stand.
- Two or three such frames are connected to one another in an articulated manner, so that the arc movement in an arc continuous caster is also taken into account.
- Another advantage results from the fact that a control and energy supply device is arranged on one of the modules. As a result, the modules are completely self-sufficient and can be operated without changing electrical connections or the like.
- control device is connected to the control center of the continuous casting installation by radio.
- the structural design of one of the modules which can be constructed largely identically, is designed in such a way that paired adjusting spindles are provided on the frame perpendicular to the direction of displacement, on which adjustable support elements are guided, and that the adjusting spindle housing is attached to longitudinal frame bars are. This creates a compact, low design.
- the strand thickness of the casting strand to be cast is taken into account in that the thickness of the base body and / or the adjusting spindle housing with the electric motor corresponds to the support roller jaw width of the support roller stand. Casting thicknesses of less than 200 mm can be assumed.
- a particularly advantageous embodiment of the support elements results from the fact that the support elements are designed as pairs of support plates which run at an adjustable angle to one another and are tangential to the support rollers. The opening angle between two such support plates can be adjusted and a high support force can be transmitted when the support roller rests without damaging the respective support roller.
- the advantage here is that different diameters of support rollers can be taken into account.
- a guide and / or drive device for the starting head consists of a caterpillar-like vehicle which is mounted on the roller pairs or by means of internal rollers or roller pairs, which are approximately at a distance from one roller pair of the support roller stand. Bearing housing of the backup roll stand is supported.
- the caterpillar-like vehicle can be supported on the rollers of the support roller stand via frictional engagement or positive engagement.
- An embodiment here provides that the guide and / or drive device for the starting head consists of two rows of rollers, an endless drive transmission element being guided around each of the rollers. As a result, drive power can be transmitted both from the outside by driven rollers of the backup roll stand and from the inside by the drive itself.
- the support is further favored between two support rollers adjacent on one strand side in that rollers are each rotatably supported at the ends of the expansion elements.
- two pairs of spreading elements which can be swiveled in with the roller spacing of two supporting rollers which respectively follow one another on one side of the supporting roller stand are connected in an articulated manner to a connecting element.
- the guidance can take place in each case via the connecting element, while the spreading elements only take over the driving force by being supported on the roller circumference of the rollers of the support roller stand.
- rollers are each rotatably supported at the ends of the expansion elements.
- An embodiment of this guide and / or power transmission unit consists in the fact that the connecting element consists of a connecting rod which is adjustable in length. This enables feed or return stroke movements of the expandable pairs of rollers.
- the length adjustment of the connecting rod can also be designed in that the connecting rod is formed from a hydraulic piston-cylinder unit.
- FIG. 1 is a side view of a sheet strand support roll stand with continuous casting mold and drive device for the start head in a first embodiment
- 3A is a perspective view of a module on an enlarged scale, with the starting head advanced
- 3B is the same perspective view of the module with the starting head retracted
- FIGS. 3A and 3B are plan views belonging to FIGS. 3A and 3B.
- FIGS. 3A and 3B shows a side view belonging to FIGS. 3A and 3B in the position in the backup roll stand
- FIG. 6 is a perspective view of the support elements for a modified embodiment on an enlarged scale
- FIG. 7 shows a perspective view of the embodiment shown in FIG. 6,
- FIG. 8 shows a side view of a third basic embodiment with the drive device for the starting head,
- 9 is a side view of a basic second embodiment;
- 9A is a front view of the starting head with positioning means when entering the continuous casting mold and
- Fig. 10 is a perspective view of the support plates in use.
- the starting head 6 is by means of a guide and / or drive device 8 which can be adapted to the course 7 of the support roller stand 4 and which is supported on one or more roller parts 9 of the support roller stand 4 and has at least one drive 10 of its own which is also transported
- Rotary drive can be moved forwards or backwards step by step or continuously in the supporting roll stand 4.
- the bendability of the drive and / or guide device 8 depends on the course 7 of the backup roll stand 4 (FIG. 1).
- the starting head 6 (FIG. 2) is connected in an articulated manner to two or three (as drawn) modules a, b, c, which can be adjusted in opposite directions in the direction of movement 11 and are individually detectable on opposite pairs of support rollers 9 of the support roller stand 4.
- Each module a, b, c has a frame 12 composed of a plurality of base bodies 13.
- Articulated rods 14 are fastened to the frame for the connection to the next module b, c (cf. FIGS. 3A, 3B).
- Adjustment spindles 16 extend between the frame 12 and adjusting spindle housings 15 fastened to the frame 12 on both sides, on which support elements 17 can be moved back and forth by rotating the adjusting spindles 16.
- an actuator 20 is mounted on the frame 12 and is carried on a parallel guide 21.
- a control and power supply unit 22 is installed in one of the modules a, b, c (FIG. 2).
- the control unit 22 can communicate by radio with the control center of the continuous caster.
- FIG. 5 shows the thickness of the base body 13 and / or the adjusting spindle housing 15 together with the electric motors 23, the supporting elements 17 each being able to pivot in at a supporting roller distance 24 (adjustable opening width 38) in order to be supported so that the respective module a, b, c can be moved.
- the adjusting spindle housing 15 is also fastened to the longitudinal bars 12a.
- FIG. 6 A preferred support of the support elements 17 can be seen in FIG. 6.
- the support elements 17 are designed as support plates 17a and 17b which extend in pairs at an angle 25 to one another and are tangent to the support rollers 9.
- FIG. 7 the support elements 17 with the toggle lever mechanisms recognizable in FIG. 6 along with the adjusting spindles 16 are visible in perspective, the adjusting spindle housing 15 and the spatial extent being indicated.
- a guide and / or drive device 8 for the start-up head 6 consists of a caterpillar-like vehicle 26 which is attached to the roller pairs 9 of the backup roller stand 4 by means of internal rollers 27 or roller pairs 27a, which maintain a distance 28 of a pair of rollers 9 of the backup roller stand 4 is supported.
- the guide and / or drive device 8 for the starting head 6 consists of two rows of rollers 29a and 29b, an endless drive transmission element 30 being guided around each of the rows of rollers 29a, 29b.
- FIGs. 9 and 9A A third basic embodiment is shown in Figs. 9 and 9A.
- the connecting element 32 is formed from a length-adjustable connecting rod 32a.
- the connecting rod 32a consists of a hydraulic piston-cylinder unit 35.
- the spreading drive can also be selected from a hydraulic linear thrust drive 36.
- FIG. 9A it is shown how the starting head 6 can be inserted into the continuous casting mold 3 from below by means of spring elements 37, which are arranged between the starting head 6 and the spreading elements 31a and 31b, so that the entire process of moving into the continuous casting mold 3 is full can be automated.
- FIGS. 1, 9 and 10 can be used in all existing continuous casting plants without major design changes.
- the pairs of rollers 9 of the backup roll stand 4 also make no changes to the bearings u. Like. Necessary and also make no additional demands on the design of the bearing housing.
- a supply cable supplied from below in the direction of movement 11 is expedient.
- the embodiment of FIG. 6 is shown in perspective in FIG. 10.
- the support elements 17 are arranged in pairs running at an angle 25 to one another and consist of the tangentially abutting support plates 17a and 17b.
- the toggle mechanisms have the adjusting spindles 16. The latter are each rotatably supported in the adjusting spindle housing 15 in the associated threaded nut.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10133755 | 2001-07-11 | ||
DE10133755A DE10133755A1 (en) | 2001-07-11 | 2001-07-11 | Method and device for transporting a starting element into a closed position at the exit of a continuous casting mold for liquid metal, in particular for liquid steel |
PCT/EP2002/007690 WO2003008130A1 (en) | 2001-07-11 | 2002-07-10 | Method and device for transporting a dummy bar into a closing position at the exit of a continuous casting mould for liquid metal, especially for liquid steel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1419023A1 true EP1419023A1 (en) | 2004-05-19 |
EP1419023B1 EP1419023B1 (en) | 2006-08-30 |
Family
ID=7691435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02751131A Expired - Lifetime EP1419023B1 (en) | 2001-07-11 | 2002-07-10 | Method and device for transporting a dummy bar into a closing position at the exit of a continuous casting mould for liquid metal, especially for liquid steel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1419023B1 (en) |
AT (1) | ATE337871T1 (en) |
DE (2) | DE10133755A1 (en) |
WO (1) | WO2003008130A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110640101A (en) * | 2019-10-30 | 2020-01-03 | 广东工业大学 | Traction mechanism |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT312179B (en) * | 1971-03-15 | 1973-12-27 | Concast Ag | Method and device for moving the starting strand into a permanent mold during continuous casting |
GB2043505A (en) * | 1979-02-28 | 1980-10-08 | Kramator Ni I P Technolog I Ma | Semicontinuous casting apparatus |
FR2572315B1 (en) * | 1984-10-26 | 1987-04-24 | Clecim Sa | MANNEQUIN SUPPORT DEVICE FOR CONTINUOUS CASTING MACHINE AND METHODS OF USE |
-
2001
- 2001-07-11 DE DE10133755A patent/DE10133755A1/en not_active Withdrawn
-
2002
- 2002-07-10 DE DE50208018T patent/DE50208018D1/en not_active Expired - Lifetime
- 2002-07-10 AT AT02751131T patent/ATE337871T1/en active
- 2002-07-10 WO PCT/EP2002/007690 patent/WO2003008130A1/en active IP Right Grant
- 2002-07-10 EP EP02751131A patent/EP1419023B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03008130A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003008130A1 (en) | 2003-01-30 |
ATE337871T1 (en) | 2006-09-15 |
DE10133755A1 (en) | 2003-01-30 |
DE50208018D1 (en) | 2006-10-12 |
EP1419023B1 (en) | 2006-08-30 |
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