CN217412435U - Continuous casting tundish stopper assembly capable of preventing core rod from falling off - Google Patents
Continuous casting tundish stopper assembly capable of preventing core rod from falling off Download PDFInfo
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- CN217412435U CN217412435U CN202123308868.2U CN202123308868U CN217412435U CN 217412435 U CN217412435 U CN 217412435U CN 202123308868 U CN202123308868 U CN 202123308868U CN 217412435 U CN217412435 U CN 217412435U
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- stopper rod
- stopper
- core bar
- continuous casting
- rod
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The utility model relates to a package stopper rod field in the middle of the continuous casting discloses a package stopper rod subassembly in the middle of the continuous casting that prevents the core bar and drop, to the problem that the stopper rod core bar among the prior art drops, now proposes following scheme, and it includes stopper rod body, embedded nut and stopper rod core bar, embedded nut is pre-buried whole of formation at the stopper rod body, the stopper rod core bar is connected with the embedded nut cooperation. The utility model discloses a screw thread appearance to middle package stopper stick embedded nut and core bar is optimized, improves the intensity of screw thread, can prevent that the core bar from droing, has avoided stopping to water because of the unplanned that middle package stopper stick core bar drops and leads to, has improved the life of middle package stopper stick, has kept the continuity of production, has practiced thrift manufacturing cost.
Description
Technical Field
The utility model relates to a package stopper rod field especially relates to a package stopper rod subassembly in middle of continuous casting that prevents that core bar from droing in the middle of continuous casting.
Background
The continuous casting process is characterized in that liquid molten steel is poured into a tundish from a steel ladle and then poured into a crystallizer from the tundish, the molten steel is solidified into a continuous blank shell with a certain thickness and containing the molten steel through forced cooling of a water-cooled crystallizer, and the continuous blank shell is continuously solidified in the operation process after being continuously pulled out of the crystallizer until the continuous blank shell is completely solidified into a continuous casting blank. From the aspects of continuous casting production and quality, the liquid steel level in the crystallizer needs to be kept stable. The stability of the steel liquid level of the crystallizer is related to factors such as the pulling speed, the control of the steel flow of the tundish and the like. The casting speed of the continuous casting machine is an important continuous casting process parameter, is determined by objective factors such as a casting section, a steel grade and furnace matching, and is kept relatively stable. Therefore, the control of the molten steel flow injected into the crystallizer by the continuous casting tundish is very critical to maintain the stability of the liquid level of the molten steel in the crystallizer. Compared with the sliding plate flow control, the tundish stopper flow control has the advantages of accurate flow control, good steel flow symmetry, reduction of vortex generation and the like, and more continuous casting machines adopt a tundish stopper flow control mode.
The flow control of the tundish stopper is realized by matching the tundish stopper with a tundish nozzle. The tundish nozzle is fixed on the tundish, and the tundish stopper moves up and down to change the area of a molten steel channel between the tundish stopper and the tundish nozzle to realize the flow control of molten steel, so the tundish stopper can move up and down according to the requirement to realize the flow control. The movement of the tundish stopper rod needs an actuating mechanism, and the tundish stopper rod core rod is connected with the actuating mechanism and the stopper rod to transmit the action of the actuating mechanism to the tundish stopper rod. The connection of the plug rod core rod and the plug rod of the tundish is realized by the engagement of the external thread of the core rod and the internal thread of the embedded bolt.
In the actual production process, because the tundish stopper rod is in contact with molten steel at the temperature of more than 1500 ℃, the service temperature is high, the temperature of the tundish stopper rod core rod and the embedded nut is increased, the temperature reaches 1100 ℃ and sometimes even exceeds 1200 ℃, when the temperature of the stopper rod core rod and the embedded bolt is high, the thread strength is reduced, when the stress of the stopper rod core rod and the embedded bolt exceeds the allowable pressure of the stopper rod core rod at high temperature, the thread can be damaged, the stopper rod core rod and the stopper rod fall off, and after the stopper rod core rod and the stopper rod fall off, the steel flow from the tundish to the crystallizer can not be controlled, so that the unplanned casting stop is caused, and the production organization is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a package stopper stick subassembly in middle of continuous casting that prevents that the core bar from droing has solved the problem that the stopper stick core bar among the prior art drops.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a package stopper stick subassembly in middle of continuous casting that prevents core bar and drops, includes stopper stick body, embedded nut and stopper stick core bar, embedded nut is pre-buried and forms a whole at the stopper stick body, the stopper stick core bar is connected with the embedded nut cooperation.
Preferably, the internal thread of the embedded nut and the external thread of the stopper rod core rod are trapezoidal.
Preferably, the stopper rod core bar is connected with the stopper mechanism and can move up and down along the axial direction of the stopper.
The utility model discloses in:
through optimizing the thread appearance of the pre-embedded nut of the tundish stopper rod and the core rod, the thread strength is improved, the core rod can be prevented from falling off, the unplanned pouring stop caused by the falling off of the tundish stopper rod is avoided, the service life of the tundish stopper rod is prolonged, the production continuity is maintained, and the production cost is saved.
Drawings
Fig. 1 is a schematic structural view of the stopper rod assembly of the present invention.
Fig. 2 is an exploded view of the pre-buried nut of the present invention.
Fig. 3 is a schematic structural view of the stopper rod core bar of the present invention.
Reference numbers in the figures: 1. a stopper body; 2. pre-burying a nut; 3. a stopper rod core rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-3, a continuous casting tundish stopper rod assembly for preventing a core rod from falling off comprises a stopper rod body 1, an embedded nut 2 and a stopper rod core rod 3, wherein the embedded nut 2 is embedded in the stopper rod body 1 to form a whole, the stopper rod core rod 3 is connected with the embedded nut 2 in a matching way, the internal thread of the embedded nut 2 and the external thread of the stopper rod core rod 3 are trapezoidal, and the tundish stopper rod core rod 3 and the embedded nut 2 are installed in a matching way in the installation process before the tundish stopper rod is used;
the stopper rod core rod 3 is connected with the stopper rod mechanism and can move up and down along the axial direction of the stopper rod, the other end of the stopper rod core rod 3 of the tundish is connected with the stopper rod mechanism, and the stopper rod mechanism aims to transmit the action of the stopper rod mechanism of the tundish to the stopper rod of the tundish, so that the up-and-down action of the stopper rod of the tundish is realized, the channel area between the stopper rod head of the tundish and the water gap of the tundish is adjusted, and the size of steel flow is controlled.
The working principle is as follows: pack the stopper rod in the middle of the preparation with embedded nut 2 pre-buried in stopper rod body 1 and form a whole with stopper rod body 1, in the installation before the stopper rod of middle package uses, middle package stopper rod core bar 3 and the cooperation installation of embedded nut 2, the other end of middle package stopper rod core bar 3 links to each other with stopper rod mechanism, the purpose is for the middle package stopper rod with the action transmission of middle package stopper rod mechanism, the up-and-down action of middle package stopper rod is realized, with the passage area between adjustment middle package stopper rod head and the middle package mouth of a river, thereby control steel stream size.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (3)
1. The utility model provides a package stopper rod subassembly in middle of continuous casting that prevents that core bar from droing, includes stopper rod body (1), embedded nut (2) and stopper rod core bar (3), its characterized in that, embedded nut (2) are pre-buried and form a whole in stopper rod body (1), stopper rod core bar (3) are connected with embedded nut (2) cooperation.
2. The continuous casting tundish stopper rod assembly for preventing the core rod from falling off according to claim 1, wherein the internal thread of the embedded nut (2) and the external thread of the stopper rod core rod (3) are trapezoidal.
3. A continuous casting tundish stopper assembly according to claim 1 characterised in that the stopper rod (3) is connected to the stopper mechanism and is movable up and down in the axial direction of the stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123308868.2U CN217412435U (en) | 2021-12-27 | 2021-12-27 | Continuous casting tundish stopper assembly capable of preventing core rod from falling off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123308868.2U CN217412435U (en) | 2021-12-27 | 2021-12-27 | Continuous casting tundish stopper assembly capable of preventing core rod from falling off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217412435U true CN217412435U (en) | 2022-09-13 |
Family
ID=83174669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123308868.2U Active CN217412435U (en) | 2021-12-27 | 2021-12-27 | Continuous casting tundish stopper assembly capable of preventing core rod from falling off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217412435U (en) |
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2021
- 2021-12-27 CN CN202123308868.2U patent/CN217412435U/en active Active
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