Vanadium-retaining smelting continuous casting tundish current stabilizer and continuous casting tundish structure
By designing a vanadium-protecting smelting continuous casting medium-covered flow stabilizer, the steady flow chamber is enclosed by the steady flow base body and retaining wall, and the orderly discharge of steel molten steel through the flow holes, the problems of unstable steel flow field and serious erosion in the existing technology are solved, and the extension of the medium-covered life and the improvement of the steady flow performance are achieved.
Patent Information
- Application Number
- CN202421786733.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-26
AI Technical Summary
During the molten steel smelting process, the existing continuous casting medium-capsules have problems such as unstable molten steel flow field, high temperature in the Baotou, and serious material erosion, resulting in short life, high cost and high labor intensity for operators.
A vanadium-protecting smelting continuous casting medium-enclosed flow stabilizer is designed, and a stable flow chamber is enclosed by a steady flow base body and a retaining wall to orderly discharge steel and water through the guide holes to slow down turbulence and reduce the erosion speed of Baotou.
It effectively slows down the turbulence of steel, reduces the erosion speed of the middle bag head, extends the service life of the middle bag, and increases the bag age from the original ten hours to more than thirty hours.
Smart Images
Figure CN222919629U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of continuous casting tundishes, and more specifically, relates to a tundish flow stabilizer for vanadium-preserving smelting and a continuous casting tundish structure. Background Art
[0002] At present, during the steelmaking process, the method of vanadium-preserving smelting is often adopted. In the above method, during the steelmaking process, the residual vanadium in the molten steel can be fully utilized, which can play the role of refining grains and improving the strength of steel. The existing continuous casting tundish generally has a trapezoidal head, and the head and the tundish wall are linearly connected, and the whole is in an isosceles trapezoidal structure. A diversion groove in the form of a cylindrical concave cavity is provided on the bottom wall of the inner cavity of the flow stabilizer. When the molten steel in the diversion groove is full, it will gradually overflow into the inner cavity of the flow stabilizer and then be discharged out through the diversion grooves on both sides of the trapezoidal bottom. The above-mentioned medium protection structure results in a small impact area of the molten steel and an unstable flow field of the molten steel, thus causing serious erosion of refractories. It is often forced to stop due to the high temperature of the tundish head. The service life of the tundish is only a dozen hours, which not only has high costs, but also increases the labor intensity of operators. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a tundish flow stabilizer for vanadium-preserving smelting and a continuous casting tundish structure, which can effectively reduce the turbulence phenomenon of molten steel, reduce the erosion rate of the tundish head, and improve the tundish service life.
[0004] To achieve the above object, the technical solution adopted by the utility model is: to provide a tundish flow stabilizer for vanadium-preserving smelting, including a flow stabilizer seat body and a retaining wall. The flow stabilizer seat body is used to be installed in the head of the tundish. The flow stabilizer seat body has a side open mouth with an opening gradually becoming larger, and the side open mouth penetrates through the top wall of the flow stabilizer seat body upward. The retaining wall is blocked at the opening side of the side open mouth and can cooperate with the flow stabilizer seat body to enclose a flow stabilizing cavity for receiving molten steel. A diversion hole for discharging molten steel is provided through the retaining wall.
[0005] In a possible implementation manner, two diversion holes are provided on the retaining wall, and the two diversion holes are symmetrically arranged on both sides of the central axis of the retaining wall, and the diversion holes are located at the lower part of the retaining wall.
[0006] In some embodiments, the end of the diversion hole far from the flow stabilizing cavity gradually extends upward obliquely, and the ends of the two diversion holes far from the flow stabilizing cavity gradually extend obliquely in opposite directions.
[0007] In a possible implementation manner, the horizontal projection of the retaining wall is arc-shaped, and the retaining wall gradually extends obliquely away from the flow stabilizing cavity from top to bottom.
[0008] In some embodiments, the horizontal projection of the inner cavity wall of the flow stabilizing cavity is also arc-shaped and is arranged opposite to the retaining wall, and the inner cavity wall of the flow stabilizing cavity gradually extends obliquely toward the flow stabilizing cavity from top to bottom.
[0009] In a possible implementation, the top surface of the retaining wall is set lower than the top surface of the steady flow seat body.
[0010] In a possible implementation, an overflow port is provided on the top surface of the steady flow seat body. The overflow port is located at the central axis of the steady flow seat body and is set away from the retaining wall.
[0011] In a possible implementation, lifting rings are provided on the top surface of the steady flow seat body, and several lifting rings are provided at intervals.
[0012] In some embodiments, the lower end of the lifting ring has an extension rod buried in the steady flow seat body, and the lower end of the extension rod is provided with an extension portion extending horizontally toward the side away from the central axis of the lifting ring.
[0013] The solution shown in the embodiments of the present application, compared with the prior art, the steady flow device for the vanadium-preserving smelting continuous casting tundish provided by the embodiments of the present application uses the steady flow seat body and the retaining wall to enclose a steady flow cavity, which can effectively receive and steady the molten steel. Then, the molten steel is discharged orderly through the diversion holes on the retaining wall. The steady flow cavity is formed by enclosing the retaining wall on the opening side of the side open mouth, effectively increasing the space for the steady flow device to receive the molten steel, slowing down the turbulence phenomenon of the molten steel, improving the steady flow performance, reducing the erosion speed of the tundish head, and the setting of the diversion holes can avoid the molten steel directly impacting the inner wall of the tundish, which helps to extend the service life of the tundish, and increases the tundish lining life from the original more than ten hours to more than thirty hours.
[0014] The present utility model also provides a continuous casting tundish structure, and the continuous casting tundish structure includes a steady flow device for the vanadium-preserving smelting continuous casting tundish. The above-mentioned continuous casting tundish structure uses the steady flow device for the vanadium-preserving smelting continuous casting tundish to steady the molten steel, slows down the turbulence phenomenon of the molten steel, improves the steady flow performance, reduces the erosion speed of the tundish head, helps to extend the service life of the tundish, and increases the tundish lining life from the original more than ten hours to more than thirty hours. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0016] Figure 1 It is a top view structural schematic diagram of the continuous casting tundish structure provided by the embodiments of the present utility model;
[0017] Figure 2 For the embodiments of the present utility model Figure 1 It is a top view structural schematic diagram of the steady flow device for the vanadium-preserving smelting continuous casting tundish in the embodiments;
[0018] Figure 3 For the embodiment of the present utility model Figure 1 is the front view structural schematic diagram of the tundish flow stabilizer in the medium-protected vanadium smelting continuous casting;
[0019] Figure 4 For the embodiment of the present utility model Figure 2 is the sectional view structural schematic diagram of A-A in it;
[0020] Figure 5 For the embodiment of the present utility model Figure 3 is the enlarged structural schematic diagram of the lifting ring in it.
[0021] Among them, each reference numeral in the figure:
[0022] 1. Flow stabilizer seat body; 11. Side opening; 12. Overflow port; 2. Dam; 21. Flow guiding hole; 3. Tundish; 4. Ladle head; 5. Lifting ring; 51. Extension rod; 52. Extension part. Specific embodiments
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0024] It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present utility model, "several" means two or more, unless otherwise specifically defined.
[0025] Please refer to together Figures 1 to 5, the tundish flow stabilizer and tundish structure provided by the present utility model will be described. The tundish flow stabilizer for vanadium-preserving smelting continuous casting includes a flow stabilizer body 1 and a dam 2. The flow stabilizer body 1 is used to be installed in the ladle head 4 of the tundish 3. The flow stabilizer body 1 has a side open mouth 11 with an opening gradually becoming larger. The side open mouth 11 penetrates upward through the top wall of the flow stabilizer body 1. The dam 2 is sealed at the opening side of the side open mouth 11 and can cooperate with the flow stabilizer body 1 to enclose a flow stabilization cavity for receiving molten steel. A diversion hole 21 for discharging molten steel is penetrated through the dam 2.
[0026] The tundish flow stabilizer provided in this embodiment, compared with the prior art, uses the flow stabilizer body 1 and the dam 2 to enclose a flow stabilization cavity, which can effectively receive and stabilize the molten steel. Then, the molten steel is orderly discharged through the diversion hole 21 on the dam 2. The flow stabilization cavity is formed by enclosing the dam 2 at the opening side of the side open mouth 11, effectively increasing the space for the flow stabilizer to receive molten steel, slowing down the turbulent phenomenon of molten steel, improving the flow stabilization performance, reducing the erosion rate of the ladle head 4 of the tundish 3. The setting of the diversion hole 21 can avoid the molten steel directly impacting the inner wall of the tundish 3, which helps to extend the service life of the tundish 3, and increases the ladle life of the tundish 3 from the original more than ten hours to more than thirty hours.
[0027] In a possible implementation manner, please refer to Figures 1 to 5 together. There are two diversion holes 21 on the dam 2. The two diversion holes 21 are symmetrically arranged on both sides of the central axis of the dam 2. The diversion holes 21 are located at the lower part of the dam 2.
[0028] In this embodiment, there are two diversion holes 21 on the dam 2. The two diversion holes 21 respectively guide the molten steel to both sides of the ladle head 4, so that the molten steel can be distributed at different positions in the length direction of the tundish 3. The diversion holes 21 can be set to two or more. The above method can improve the drainage speed of the molten steel and realize the effective guidance of the molten steel to both ends of the tundish 3.
[0029] Furthermore, the diversion holes 21 are located at the lower part of the dam 2. The molten steel will flow into the tundish 3 through the diversion holes 21 only after the molten steel has a certain height in the flow stabilization cavity, enhancing the flow stabilization effect of the flow stabilizer and reducing the impact of the molten steel on the tundish 3.
[0030] In some embodiments, please refer to Figures 1 to 5, one end of the diversion hole 21 away from the steady flow chamber gradually extends upward obliquely, and one ends of the two diversion holes 21 away from the steady flow chamber gradually extend obliquely in opposite directions. One end of the diversion hole 21 for discharging molten steel gradually extends upward obliquely, avoiding the rapid discharge of molten steel caused by setting the diversion hole 21 in a horizontal form or extending downward obliquely, achieving a good steady flow effect, enabling the molten steel to be guided outward at a relatively low flow rate after meeting the discharge requirements, avoiding the phenomenon of turbulence, reducing the impact on the inner wall of the tundish 3, achieving effective protection of the inner wall of the tundish 3, and helping to extend the service life of the tundish 3.
[0031] In a possible implementation manner, please also refer to Figures 1 to 5 , the horizontal projection of the retaining wall 2 is arc-shaped, and the retaining wall 2 gradually extends obliquely away from the steady flow chamber from top to bottom. The retaining wall 2 is an arc-shaped plate structure, and the arc center is arranged towards the side of the steady flow seat body 1, which is convenient for cooperating with the steady flow seat body 1 to form a steady flow chamber with a certain curvature and achieve the steady flow effect on the molten steel.
[0032] Furthermore, the retaining wall 2 extends obliquely away from the steady flow chamber from top to bottom, which is convenient for resisting the impact force formed on the retaining wall 2 when the molten steel falls into the steady flow chamber, reducing the force on the retaining wall 2, meeting the reliability of the connection between the retaining wall 2 and the steady flow seat body 1, and ensuring the steady flow effect of the flow stabilizer.
[0033] In some embodiments, please also refer to Figures 1 to 5 , the horizontal projection of the inner cavity wall of the steady flow chamber is also arc-shaped and is arranged opposite to the retaining wall 2, and the inner cavity wall of the steady flow chamber extends obliquely towards the side close to the steady flow chamber from top to bottom.
[0034] In this embodiment, the steady flow seat body 1 is also an arc-shaped plate member, and its outer shape is conformally arranged with the inner wall of the head 4 of the tundish 3. The inner wall of the steady flow seat body 1 (that is, the inner cavity wall of the steady flow chamber) is arc-shaped, which is convenient for cooperating with the inner wall of the retaining wall 2 to form an approximately circular steady flow chamber, maximizing the avoidance of the turbulence problem, achieving effective steady flow of the molten steel, and ensuring the orderly discharge of the molten steel into the tundish 3 subsequently.
[0035] In a possible implementation manner, please also refer to Figures 1 to 5 , the top surface of the retaining wall 2 is arranged lower than the top surface of the steady flow seat body 1. The retaining wall 2 is provided with a diversion hole 21 for guiding the molten steel outward. When the molten steel falls into the steady flow chamber, the distance from the steady flow seat body 1 is relatively small, and the distance from the retaining wall 2 is relatively large. The retaining wall 2 can be set at a relatively low height, which can meet the effect of guiding the molten steel through the diversion hole 21. This setting is convenient for saving material consumption and reducing the structural cost.
[0036] In a possible implementation manner, please also refer to Figures 1 to 5, an overflow port 12 is provided on the top surface of the steady flow seat body 1. The overflow port 12 is located at the central axis of the steady flow seat body 1 and is set away from the retaining wall 2. The overflow holes on the top surface of the steady flow seat body 1 can effectively prevent the molten steel from spilling out disorderly to the outside of the steady flow device during an accident, enabling the molten steel to flow out of the steady flow seat body 1 stably through the overflow holes, facilitating the operators to prevent accidents and improving the safety of using the steady flow device.
[0037] In a possible implementation manner, please refer to Figures 1 to 5 , a lifting ring 5 is provided on the top surface of the steady flow seat body 1, and several lifting rings 5 are arranged at intervals. The design of the lifting ring 5 facilitates the lifting of the steady flow device and is convenient for installing the steady flow device into the nozzle head 4 of the tundish 3.
[0038] Specifically, multiple lifting rings 5 are provided, which can ensure the safety of lifting through multi-point lifting, contribute to improving the convenience of lifting, enhancing the installation efficiency, and strengthening the lifting performance.
[0039] In some embodiments, please refer to Figures 1 to 5 , the lower end of the lifting ring 5 has an extension rod 51 embedded in the steady flow seat body 1, and the lower end of the extension rod 51 is provided with an extension part 52 extending horizontally toward the side away from the central axis of the lifting ring 5. The extension rod 51 is effectively embedded in the steady flow seat body 1. By providing the extension part 52 at the lower end of the extension rod 51, the reliability of the connection between the lifting ring 5 and the steady flow seat body 1 is further improved. The extension part 52 extends in the horizontal direction, can effectively bear the overall weight of the steady flow seat body 1 and the retaining wall 2, is convenient for lifting and installation, and improves the convenience of installation.
[0040] Based on the same inventive concept, the embodiment of the present application also provides a continuous casting tundish structure, and the continuous casting tundish structure includes a vanadium-preserving smelting continuous casting tundish steady flow device. The above-mentioned continuous casting tundish structure stabilizes the molten steel by using the vanadium-preserving smelting continuous casting tundish steady flow device, slows down the turbulence phenomenon of the molten steel, improves the steady flow performance, reduces the erosion rate of the nozzle head 4 of the tundish 3, helps to extend the service life of the tundish 3, and increases the tundish life from the original more than ten hours to more than thirty hours.
[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A tundish flow stabilizer for vanadium smelting and continuous casting, characterized in that: The invention comprises a flow stabilizing seat body (1) and a retaining wall (2), wherein the flow stabilizing seat body (1) is used to be installed in a baling head (4) of a middle baling (3), the flow stabilizing seat body (1) has a side opening (11) with a gradually increasing opening, the side opening (11) is arranged to penetrate upward through the top wall of the flow stabilizing seat body (1), the retaining wall (2) is sealed at the opening side of the side opening (11), and can cooperate with the flow stabilizing seat body (1) to enclose a flow stabilizing cavity for receiving molten steel, and the retaining wall (2) is penetrated by a flow guide hole (21) for discharging molten steel.
2. The vanadium-preserving smelting continuous casting tundish flow stabilizer according to claim 1, characterized in that: Two guide holes (21) are provided on the retaining wall (2), and the two guide holes (21) are symmetrically arranged on both sides of the central axis of the retaining wall (2), and the guide holes (21) are located at the lower part of the retaining wall (2).
3. The vanadium-preserving smelting continuous casting tundish flow stabilizer according to claim 2, characterized in that: One end of the flow guide hole (21) away from the flow stabilizing chamber gradually extends in an inclined manner upwards, and one end of the two flow guide holes (21) away from the flow stabilizing chamber gradually extends in an inclined manner in opposite directions.
4. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting according to claim 1, characterized in that: The horizontal projection of the retaining wall (2) is in an arc shape, and the retaining wall (2) gradually extends from top to bottom in an inclined manner toward a side away from the flow stabilization cavity.
5. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting as claimed in claim 4, characterized in that: The horizontal projection of the inner cavity wall of the stabilizing cavity is also arc-shaped and is arranged opposite to the retaining wall (2). The inner cavity wall of the stabilizing cavity extends obliquely from top to bottom toward a side close to the stabilizing cavity.
6. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting as claimed in claim 1, characterized in that: The top surface of the retaining wall (2) is arranged lower than the top surface of the flow stabilizing seat body (1).
7. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting according to any one of claims 1 to 6, characterized in that: An overflow port (12) is provided on the top surface of the flow stabilizing seat body (1); the overflow port (12) is located at the central axis of the flow stabilizing seat body (1), and the overflow port (12) is arranged away from the retaining wall (2).
8. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting according to any one of claims 1 to 6, characterized in that: A lifting ring (5) is provided on the top surface of the flow stabilizer body (1), and a plurality of the lifting rings (5) are provided at intervals.
9. The tundish flow stabilizer for vanadium-preserving smelting and continuous casting as claimed in claim 8, characterized in that: The lower end of the lifting ring (5) has an extension rod (51) buried in the flow stabilizer body (1), and the lower end of the extension rod (51) is provided with an extension portion (52) extending horizontally away from the central axis side of the lifting ring (5).
10. Continuous casting tundish structure, characterized in that: It comprises the flow stabilizer for vanadium-preserving smelting continuous casting as described in any one of claims 1-9.