EP1337365A1 - Strangführung einer stranggiessanlage mit einer einrichtung zur sekundärkühlung - Google Patents
Strangführung einer stranggiessanlage mit einer einrichtung zur sekundärkühlungInfo
- Publication number
- EP1337365A1 EP1337365A1 EP01992622A EP01992622A EP1337365A1 EP 1337365 A1 EP1337365 A1 EP 1337365A1 EP 01992622 A EP01992622 A EP 01992622A EP 01992622 A EP01992622 A EP 01992622A EP 1337365 A1 EP1337365 A1 EP 1337365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strand
- cooling
- guide
- cast
- cast 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
- 238000001816 cooling Methods 0.000 title claims abstract description 54
- 238000009749 continuous casting Methods 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 title abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002826 coolant Substances 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
Definitions
- the invention relates to a strand guide of a continuous casting installation, comprising guide elements for supporting and guiding a cast strand, which are equipped with guide rollers underneath a mold, and a device, referred to as secondary cooling, for loading the cast strand with coolant, usually water, by means of against the guide rollers and / or the cast strand directional spray nozzles.
- An essential task of the aforementioned strand guide is to continuously remove heat from the cast strand in the area between the support elements with a coolant and thereby cause the still liquid core of the cast strand to solidify.
- the state of the art is to construct the device, which is referred to as secondary cooling, by means of a pipe system with which coolant is distributed in a predetermined manner and sprayed onto the slab.
- Strand guides with integrated means for continuously cooling the cast strand are known.
- Document EP 0 642 857 A2 describes a continuous casting installation, the strand guide segments of which are provided with spray elements, in particular spray battens, which are distributed over the variably adjustable width of the strand and are optionally subdivided in the strand running direction into cooling zones and connected to cross-distributor pipes.
- the outer spray battens arranged beyond the minimum strand width can be switched on or off depending on the respective strand width.
- inner tubes are arranged at both ends concentrically, which are closed at their free ends and provided with an outer square and are also screwed to a web.
- the inflow openings in the cross distributor pipes are open for all spray battens. If a narrower strand format is now to be cast and lateral extrusion of the strand is to be prevented, only the inner tubes need to be rotated about their longitudinal axis. This can be done by means of a socket wrench, which is placed on the outer square of the inner tube from outside the cooling chamber. Due to the connection of both inner tubes of each cross distributor via a coupling tube, both inner tubes are rotated at the same time, which means that the spray battens that can be switched on and off are first closed in pairs, first the outer, then the middle and then the inner spray battens.
- US Pat. No. 4,220,192 describes a combination of a bearing arrangement for rollers with a spray system for coolants for arrangement at the bottom outlet of a continuous casting mold with at least one pair of rollers arranged on horizontal axes, which grip and guide the strand emerging from the mold.
- the bearing arrangement is formed with an elongated passage into which cooling water flows.
- the water flows through a plurality of transverse passages which are formed in the bearing arrangement and are provided with nozzle ends which are oriented in such a way that cooling water flows above and below the rollers and against the abutting surface of the cast strand and cools them.
- the splash water also cools the interior of the bearing assembly as it flows through the passages, thus preventing deformation and warping of the aligned rollers and nozzles.
- Document EP 0 028 686 B1 describes an adjusting device for so-called spray bars running along the surface of a strand of a continuous casting installation as a carrier for spray tubes directed at the surfaces for applying a cooling medium to the surfaces, e.g. B. water.
- a cooling medium e.g. B. water.
- the spray bars can be adjusted at least in zones parallel to themselves by means of a steering system.
- all the spray bars arranged on the four sides of the strand and extending along the surface of the strand are carried by at least two steering levers such that the spray bars move in the direction of the longitudinal axis of the strand when the distance changes.
- the steering levers of the lateral spray bars which are assigned to a strand surface, the center of which shifts as the width of the strand surface changes, can be pivoted in inclined planes. These form an acute angle .alpha. With the respective spray plane running perpendicular to the assigned strand surface through the spray pipes, such that the change in the distance of the spray bars results in a transverse displacement of the spray bars together with the spray pipes relative to the longitudinal axis of the spray.
- Document DE 30 39 443 A1 discloses a spray nozzle arrangement in the secondary cooling of a steel continuous casting installation, with at least two spray nozzles arranged next to one another transversely to the strand to adjust their distance from the strand surface and their mutual distance via their supply lines are fastened to holders which are articulated on adjusting levers arranged and guided in a straight line.
- Two adjusting levers which are mounted in a fixed position on the opposite side are connected by a push rod in the manner of an anti-parallel crank with opposite movement transmission, and the brackets articulated on the adjusting levers are jointly guided parallel to the strand surface.
- Document DE 197 02 718 C1 discloses a method and a device for controlling the cooling medium in a continuous casting installation.
- the nozzles of a cooling zone arranged on spray battens can be switched on and off.
- Several spray battens are selectively selected within a zone and combined into at least two spray groups. If the cooling medium falls below a specified system pressure, the individual groups are alternately in a specified one Time interval can be switched on and off.
- a device for carrying out the method comprises, below the continuous casting mold, in a cooling section provided with guide rollers parallel to the guide rollers and at a distance from one another, arranged at a distance from each other, each having an injection nozzle at the open end.
- a control valve is arranged in the fork of the distributor pipes leading to the individual groups of spray battens.
- the control valve is time-controllable and responsive to a system pressure of the cooling medium.
- the invention is based on the object of realizing an uncomplicated and expedient combination of the supporting and guiding function with an effective cooling of the strand in a particularly compact structural structure of the guide elements in the case of strand guiding of a continuous casting installation.
- the secondary cooling is designed with cooling boxes, which are preferably divided along the strand guide according to their predetermined division into zones of different cooling intensity into separate chambers.
- the guide elements achieve a compact and uncomplicated building structure, which at the same time provides optimal conditions for the different tasks, namely strand management and strand cooling.
- Figure 1 is a sectional view of a mold when casting a strand and guide elements arranged below it;
- Figure 2 shows a guide element with cooling boxes in the section of a horizontal
- Figure 3 shows a first embodiment of a strand guide element, in section
- Figure 4 shows an alternative design of a strand guide element.
- Figure 5 shows another embodiment of a guide element with cooling boxes in the section of a horizontal plane 11-11 in Figure 1;
- Figure 6 shows another embodiment of a guide element according to. Figure 3, in section.
- the section of a continuous casting installation shown in FIG. 1 comprises the pouring tube 15 from a tundish (not shown) into a continuous casting mold 1 with a vertical flow direction.
- Two guide elements 3, 3 ' are shown below the mold 1, each of which is equipped with four pairs of guide rollers 2.
- the cast strand 4 is supported and guided between the pairs of guide rollers 2.
- FIG. 2 shows below the mold 1 a guide element 3 equipped with guide rollers 2, 2 'for supporting and guiding the cast strand 4.
- the strand guide element 3 is in a manner known per se for non-positive application of the guide rollers 2, 2 'with a fixed side 17 and a loose side 17', which is why the known construction will not be discussed further here.
- As an essential piece of equipment it has a device, referred to as secondary cooling, for applying coolant 5, usually water, to the cast strand 4.
- the secondary cooling is designed according to the essential feature of the invention with crossbeams as cooling boxes 6, 6 ', which are divided into separate chambers 7, 7' along the strand guide according to their predetermined division with zones of different cooling intensity.
- nozzle tubes 10 equipped with nozzles 9 are arranged as the feed means for the cooling medium on the side of the cooling boxes 6, 6 ′ facing the cast strand 4.
- the nozzle tubes 10 are very advantageously connectable to or disconnectable from the connection points of the cooling boxes 6, 6 'by quick disconnect couplings 11.
- the nozzles 9 can also be connected to or separated from the nozzle pipes 10 by means of quick-disconnect couplings (not shown).
- the water supply lines 12 can each be individually equipped with shut-off devices 13 if this appears necessary for the design of a changing production program.
- the water supply lines 12 are each connected to a water supply pipe 14, which is connected to a central water supply 19.
- the individual chambers 7, 7 'of the cooling boxes 6, 6' can be switched on and off depending on the width of the cast strand.
- the secondary cooling formed with cooling boxes 6, 6 ' can be flexibly adapted to the respective geometry of a cast strand.
- FIG. 3 shows the above-described structural structure of a guide element 3 for supporting and guiding a cast strand 4 in the direction of view on its narrow side in a longitudinal section.
- the building structure that can be seen from this comprises an outer frame with parallel crossbeams 20 corresponding to the broad side of the cast strand 4.
- the illustration shows the extraordinarily advantageous integration of the cooling boxes 6 in connection with the crossbeams 16 and attached to these broadside traverses 20.
- the guide element 3 has, in a known arrangement, narrow side parts with the fixed side part 17 and the loose side part 17 'in a manner known per se with means, not shown, for merging or unfolding into the open position shown in FIG. 3 In this position, individual chambers 7, 7 'carrying cooling water 5 can be designed to be freely continuous from top to bottom, in which case adjacent chambers, for example in the area of a narrow cast strand 4, can be switched off in zones, as shown in FIG. 2.
- FIG. 3 clearly shows the assignment of nozzle tubes 10 with nozzles 9 to the guide rollers 2 or to the cast strand 4. Furthermore, FIG. 3 shows the particularly compact and expedient integration of the cooling boxes 6 into the structural structure of a guide element 3 ,
- FIG. 4 A somewhat different design of a guide element 3 is shown in FIG. 4.
- the cooling boxes are attached to the structure of the guide elements 3 from the outside with the aid of fastening elements 8, 8 '.
- the illustration shows the fixed side part 17 and the loose part 17 'each with cooling boxes 6, 6' arranged on the outside. As previously shown in FIG. 2, these can also be switched off from the central cooling chamber part 7 'with side cooling chamber parts 7'.
- the illustration shows, in accordance with the basic concept, nozzle pipes 10 with attached nozzles 9 when spraying the guide rollers 2, 2 'with water spray jets.
- the broadside trusses are identified by reference number 20 in accordance with FIG. 3.
- the building structure according to FIG. 4 is suitable, for example, for retrofitting an existing guide element with a particularly intensive water cooling system for cast strands with variable thickness.
- the width of the middle chamber 7 ' can be made correspondingly larger compared to the side chambers.
- FIG. 5 shows a somewhat different design of FIG. 2.
- cooling boxes 6, 6 ', 6 "on each side 17 and 17' can be connected in pairs to the water supply pipes 14, 14 ', and the middle cooling boxes 6, 6' are each connected to a central water supply 19, 19 '.
- Loose part 17 'and fixed part 17 of the guide element 3 are mutually adjustable by means of force (not shown) at a mutual spacing according to the thickness of a strand 4.
- the cooling boxes 6, 6 ' are in the central region through an opening in each central cross-member 18, 18' in communication with each other and connected to the central water supply 19, 19 '.
- FIG. 6 shows a construction of the guide element 3 similar to FIG. 3, but with simplified equipment and arrangement of the cross members 16 for supporting the walls 22, 22 'of the cooling boxes 6. These are connected to the central water supply lines 19, 19' via throttling members 21, 21 'connected. LIST OF REFERENCE NUMBERS
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 |
|---|---|---|---|
| DE10054750A DE10054750A1 (de) | 2000-11-04 | 2000-11-04 | Strangführung einer Stranggießanlage mit einer Einrichtung zur Sekundärkühlung |
| DE10054750 | 2000-11-04 | ||
| PCT/EP2001/012203 WO2002036291A1 (de) | 2000-11-04 | 2001-10-23 | Strangführung einer stranggiessanlage mit einer einrichtung zur sekundärkühlung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1337365A1 true EP1337365A1 (de) | 2003-08-27 |
| EP1337365B1 EP1337365B1 (de) | 2004-07-14 |
Family
ID=7662168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01992622A Expired - Lifetime EP1337365B1 (de) | 2000-11-04 | 2001-10-23 | Strangführung einer stranggiessanlage mit einer einrichtung zur sekundärkühlung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1337365B1 (de) |
| AU (1) | AU2002215968A1 (de) |
| DE (2) | DE10054750A1 (de) |
| WO (1) | WO2002036291A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126184A1 (zh) * | 2011-03-24 | 2012-09-27 | 中冶京诚工程技术有限公司 | 锭坯组合箱式水冷铸造装置 |
| DE102023209452A1 (de) | 2023-09-27 | 2025-03-27 | Sms Group Gmbh | Adaptives Segment einer Strangführung, insbesondere für eine Stranggießanlage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4220192A (en) * | 1979-05-29 | 1980-09-02 | Gladwin Kirk M | Combined roller support and spray cooling system for continuous casting molds |
| DE2939322C2 (de) * | 1979-09-28 | 1986-09-11 | Mannesmann AG, 4000 Düsseldorf | Vorrichtung zur Änderung des Abstandes von Spritzbalken einer Stranggießanlage |
| DE3039443A1 (de) * | 1980-10-18 | 1982-05-27 | Schloemann-Siemag AG, 4000 Düsseldorf | Sekundaerkuehlung einer stahlstraggiessanlage |
| DE4328512A1 (de) * | 1993-08-25 | 1995-03-02 | Schloemann Siemag Ag | Stranggießanlage |
| DE19702718C1 (de) * | 1997-01-15 | 1998-10-01 | Mannesmann Ag | Verfahren und Vorrichtung zur Kühlmediumsteuerung bei einer Stranggießanlage |
-
2000
- 2000-11-04 DE DE10054750A patent/DE10054750A1/de not_active Withdrawn
-
2001
- 2001-10-23 EP EP01992622A patent/EP1337365B1/de not_active Expired - Lifetime
- 2001-10-23 AU AU2002215968A patent/AU2002215968A1/en not_active Abandoned
- 2001-10-23 DE DE50102875T patent/DE50102875D1/de not_active Expired - Lifetime
- 2001-10-23 WO PCT/EP2001/012203 patent/WO2002036291A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0236291A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10054750A1 (de) | 2002-05-08 |
| EP1337365B1 (de) | 2004-07-14 |
| WO2002036291A1 (de) | 2002-05-10 |
| DE50102875D1 (de) | 2004-08-19 |
| AU2002215968A1 (en) | 2002-05-15 |
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