EP3661671A1 - Lagerung für ein segment in einer strangführung sowie strangführung - Google Patents
Lagerung für ein segment in einer strangführung sowie strangführungInfo
- Publication number
- EP3661671A1 EP3661671A1 EP18733868.6A EP18733868A EP3661671A1 EP 3661671 A1 EP3661671 A1 EP 3661671A1 EP 18733868 A EP18733868 A EP 18733868A EP 3661671 A1 EP3661671 A1 EP 3661671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- segment
- bearing
- strand guide
- strand
- casting
- 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
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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
-
- 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
- B22D11/128—Accessories for subsequent treating or working cast stock in situ for removing
- B22D11/1282—Vertical casting and curving the cast stock to the horizontal
Definitions
- the invention relates to a storage for a segment in a strand guide below the mold of a continuous slab caster.
- the strand guide and its segments serve to guide a casting strand out of the mold into the horizontal.
- the invention also relates to a strand guide with the bearing according to the invention.
- the invention finds application in slab or Dünnbrammenstranggitownliteanlagen in the embodiments sheet system, vertical bending or vertical installation.
- bearings for segments in a strand guide are basically known.
- the segment itself is still stationarily mounted on the segment carrier; At the same time, however, a thermal expansion of the segment is advantageously taken into account.
- the thermal expansion of not only the segments, but also the entire continuous casting during the casting operation leads disadvantageously in the transition from the mold to the segment and the transition from adjacent segments to each other to changes in the positions of the roles of the segments to their theoretical ideal positions in the roll carpet. These changes cause stress and strain on the strand shell and lead to undesirable defects in the slabs produced. Due to the large number of varying influencing variables during the casting operation, the changes in the roll carpet can only be approximately calculated and can only be measured with great effort.
- the invention has the object of developing a known storage for a segment in a strand guide and a known corresponding strand guide to the effect that - especially during the casting - always an optimal, especially smooth or jump-free transition from the mold to the first segment and the transition is ensured between adjacent segments of the strand guide for the casting strand.
- This object is achieved by the claimed in claim 1 storage.
- the storage according to the invention is characterized in that the storage is designed as a floating bearing so that the stored in their segment in the z direction, d. H. against the effective direction of gravity, fixed, but is freely movable in the x direction.
- z denotes the vertical and x and y span a plane in the horizontal.
- y denotes the width direction of the strand and x the direction perpendicular to the broad surface of the casting strand.
- segment as part of a strand guide means an upper frame and a subframe on which strand guide rollers are respectively rotatably mounted, the upper frame and the subframe respectively connected to each other via typically four tie rods or hydraulic cylinders are arranged opposite one another and form a channel for guiding the casting strand as it is drawn out of the mold
- tie rods or hydraulic cylinders are typically arranged opposite one another and form a channel for guiding the casting strand as it is drawn out of the mold
- a plurality of segments are typically arranged one behind the other in the casting direction for guiding the casting strand.
- the claimed definition of the segment in the z- or casting direction ensures that the freshly cast strand is continuously guided, ie that in particular no unacceptably large distances between the exit of the mold and the first segment or between adjacent segments in the casting arise, where the casting strand not supported.
- the further claimed degree of freedom in the x or radial direction advantageously ensures that the segment automatically optimally positions itself due to the optionally acting forces of the cast strand in the x direction, so that the forces acting on the segment from the casting strand are as minimal as possible. Due to the said degree of freedom in the x-direction, the segment shifts automatically due to the acting forces of the casting strand so that the transition either on its inlet side or its outlet side, ie to the mold or to an adjacent segment without jump or smooth.
- the thermal expansion of the continuous casting plant at least in the x-direction, no longer has any negative influence on the said transitions.
- the influence of the thermal expansion of the continuous casting plant on the transitions can be made even clearer can be reduced if the movable bearing according to the invention not only grants a degree of freedom in the x-direction, but in addition also a rotational degree of freedom.
- the movable bearing according to the invention has a preferably integrated pivot bearing for pivoting the segment about the y-axis.
- the segment can be aligned either only on its input side to the previous component (mold or segment) or only on its output side to the subsequent segment
- the additionally claimed pivot bearing also allows a simultaneous alignment of the segment both at its input as well as at its output side to the respective adjacent components of the continuous casting.
- the storage of the segment at the height of its center of gravity has the advantage that the segment so mounted does not tend to tilt within the pivot bearing, but instead is mounted neutral in terms of power in each rotational position or angular position. Therefore arise, as I said, no tilting moments of the segment about its axis of rotation, which would otherwise disadvantageously have to be compensated for by the casting strand in order to optimally position the segment with respect to its transitions.
- the storage of the segment in its center of gravity also has an advantageous effect on the quality of the cast strand.
- An even more optimized storage can be formed by providing a degree of freedom not only in the x-direction and rotational, but also in the y-direction, d. H. granted in the width direction of the cast strand. The self-alignment of the segment then works even better.
- the figure shows the continuous casting device 100. It comprises a mold 1 10 and one of the mold in the casting direction R downstream strand guide 120.
- the strand guide 120 consists of a plurality of segments 25 which are arranged in the casting direction R one behind the other. Between the mold 1 10 and the first segment castors 1 15 can be arranged.
- the upper frame and the lower frame of a segment are connected to each other in the figure by way of hydraulic cylinders 23.
- the mold which is located downstream of the mold, apart from the castors 15, is mounted on the fixed side 28 of the strand guide 120 via the bearing 10 according to the invention.
- this bearing 10 is designed as a floating bearing so that it defines the segment 25 in the z-direction.
- the segment 25 is mounted freely displaceable. Further preferably, the segment 25 may also be rotatably mounted freely rotatable about the y-axis. For this purpose, a pivot bearing is then integrated in the movable bearing.
- the loose bearing is designed in the form of a sliding, up or sliding bearing, possibly integrated with the rotary bearing.
- the storage according to the invention can in principle be used in any segment, preferably also in a plurality of segments in the strand guide. Particularly advantageous is the application However, in the first segment in the strand guide behind the mold, because then the shell of the casting strand is still relatively thin and the casting strand therefore particularly sensitive to cracks in the transition between the mold and the first segment, but also in the transition of the first segment to the second segment responding. Due to its then only limited solidification, it is advantageous if the particular first segment can automatically align itself optimally even with already low forces of the casting strand. This is ensured by the degrees of freedom granted in the storage according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017213624 | 2017-08-04 | ||
| DE102017220637 | 2017-11-17 | ||
| DE102017221756.1A DE102017221756A1 (de) | 2017-08-04 | 2017-12-04 | Lagerung für ein Segment in einer Strangführung |
| PCT/EP2018/066908 WO2019025081A1 (de) | 2017-08-04 | 2018-06-25 | Lagerung für ein segment in einer strangführung sowie strangführung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3661671A1 true EP3661671A1 (de) | 2020-06-10 |
| EP3661671B1 EP3661671B1 (de) | 2020-12-23 |
Family
ID=65019699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18733868.6A Active EP3661671B1 (de) | 2017-08-04 | 2018-06-25 | Lagerung für ein segment in einer strangführung sowie strangführung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3661671B1 (de) |
| DE (1) | DE102017221756A1 (de) |
| WO (1) | WO2019025081A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019203141A1 (de) | 2019-03-07 | 2020-09-10 | Sms Group Gmbh | Strangführung und Verfahren zum Führen eines Gießstrangs aus einer Kokille |
| CN113649534B (zh) * | 2021-07-09 | 2022-09-09 | 中国冶金科工股份有限公司 | 一种板坯连铸扇形段空间定位测量方法 |
| DE102023209452A1 (de) * | 2023-09-27 | 2025-03-27 | Sms Group Gmbh | Adaptives Segment einer Strangführung, insbesondere für eine Stranggießanlage |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2602935A1 (de) * | 1976-01-27 | 1977-07-28 | Fives Cail Babcock | Stranggiessanlage mit gekruemmten abzug |
| DE102010017924A1 (de) * | 2010-04-22 | 2011-10-27 | Sms Siemag Ag | Modularer Tragrahmen |
| DE102010054398A1 (de) * | 2010-12-08 | 2012-06-14 | Sms Siemag Ag | Stranggießanlage |
-
2017
- 2017-12-04 DE DE102017221756.1A patent/DE102017221756A1/de not_active Withdrawn
-
2018
- 2018-06-25 WO PCT/EP2018/066908 patent/WO2019025081A1/de not_active Ceased
- 2018-06-25 EP EP18733868.6A patent/EP3661671B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019025081A1 (de) | 2019-02-07 |
| EP3661671B1 (de) | 2020-12-23 |
| DE102017221756A1 (de) | 2019-02-07 |
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