Tundish Flow Stabilizer

Abstract

The present invention relates to a tundish flow stabilizer in the technical field of continuous casting, comprising a flow stabilizer body and a plurality of flow guide protrusions, the flow stabilizer body having a hollow structure, the plurality of flow guide protrusions disposed within the flow stabilizer body and fixed to a bottom wall of the flow stabilizer body, a first end of each flow guide protrusion extending to a side wall of the flow stabilizer body, and a flow path being formed between two adjacent flow guide protrusions. The tundish flow stabilizer allows the steel flow flowing therein to dissipate most of its turbulent kinetic energy, thereby reducing or weakening the turbulent kinetic energy of the steel flow when it exits, thereby preventing the steel flow from splashing or penetrating the bottom of the tundish.

Description

[Technical Field]

[0001] The present invention relates to the technical field of continuous casting, and in particular to a tundish flow stabilizer. [Background technology]

[0002] In the continuous casting process, a flow stabilizer is often installed in the impact area of ​​the tundish to prevent the steel flow from splashing or penetrating the bottom of the tundish as it enters the tundish, ensuring smooth pouring and continuous casting. The tundish flow stabilizer is a crucial device for controlling the flow within the tundish. It is installed directly below the ladle shroud and its main function is to buffer the pouring flow of the steel flow, suppress turbulent kinetic energy, and protect the tundish lining. At the same time, it creates an upward flow in the pouring area of ​​the tundish, optimizing the steel flow field and improving the removal rate of inclusions from the steel flow.

[0003] In the prior art, tundish flow stabilizers are generally semi-enclosed devices with an internal cavity. Specifically, a tundish flow stabilizer has a block-shaped body with a cavity, and an opening on the top surface of the body that communicates with the cavity. The steel flow enters the cavity through the opening and collides with the inner wall of the body within the cavity, dissipating the turbulent kinetic energy.

[0004] However, a single cavity has a limited ability to dissipate the turbulent kinetic energy of the pouring flow of the steel stream. That is, the turbulent kinetic energy of the pouring flow of the steel stream is hardly dissipated by collision with the inner wall of the body alone, so the steel stream still has a considerable amount of turbulent kinetic energy when it leaves the flow stabilizer. Therefore, prior art tundish flow stabilizers do not achieve very good results in suppressing turbulent kinetic energy, and also exhibit phenomena such as the steel stream splashing or penetrating the bottom of the tundish.

[0005] Patent document EP 2 598 269 A1 discloses an impact pad for use in a tundish of continuous steel casting when pouring molten steel from a casting ladle into the tundish, the impact pad having an impact bottom with uniformly distributed spherical corrugations.

[0006] Patent document US6102260A discloses a chamber including a first faceted sidewall having a plurality of facets formed therein for receiving a downward flow of liquid metal. A second wall extends inwardly and downwardly from the first faceted wall toward an upper opening. Buttresses are spaced apart along the first faceted wall. Each buttress extends between an impact face and the second faceted wall. Summary of the Invention

[0007] The object of the present invention is to provide a tundish flow stabilizer that allows the steel flow entering the tundish flow stabilizer to dissipate most of its turbulent kinetic energy, so that the steel flow exits with less or weaker turbulent kinetic energy, thereby avoiding the situation where the steel flow splashes or penetrates the bottom of the tundish.

[0008] According to the above concept, the technical solution adopted by the present invention is as follows:

[0009] A tundish flow stabilizer comprising a flow stabilizer body and a plurality of flow guide protrusions, The flow stabilizer body has a hollow structure. A plurality of flow guide protrusions are disposed within the flow stabilizer body and fixed to a bottom wall of the flow stabilizer body; a first end of each flow guide protrusion extends to a side wall of the flow stabilizer body; A flow channel is formed between two adjacent flow guide protrusions, This tundish flow stabilizer is equipped with a flow stabilizing plate, A flow stabilizing plate is provided on the flow stabilizer body and is connected vertically to the side wall thereof; The flow stabilizing plate has a polygonal through-hole penetrating the flow stabilizing plate in the extension direction of the flow stabilizer body, The plurality of corners of the through hole correspond one-to-one to the plurality of first ends, A tundish flow stabilizer, wherein each corner of the through hole is positioned directly above a first end of one flow guide protrusion.

[0010] In the tundish flow stabilizer provided by the present invention, a plurality of flow guide protrusions are provided on the inner bottom wall of the flow stabilizer body, forming a plurality of flow passages. The flow guide protrusions then divide the steel flow entering the flow stabilizer body into multiple steel streams, thereby achieving steel stream division. During the division process, the steel stream collides with the flow guide protrusions, dissipating a portion of its turbulent kinetic energy. The side walls of the flow stabilizer body also dissipate a portion of the turbulent kinetic energy of the steel stream. Therefore, most of the turbulent kinetic energy of the steel stream can be dissipated by the flow stabilizer body, ensuring that the steel stream has little or no turbulent kinetic energy when it leaves the flow stabilizer body. As a result, the present tundish flow stabilizer effectively suppresses the turbulent kinetic energy of the steel stream, preventing the steel stream from splashing or penetrating the bottom of the tundish.

[0011] Furthermore, the flow stabilizing plate, together with the flow guide protrusions and side walls, forms a semi-enclosed space, which can effectively control the flow speed of the steel flow and change the flow direction of the steel flow. The steel flow can dissipate most of its turbulent kinetic energy by flowing through this semi-enclosed space, thereby achieving stabilization of the steel flow and allowing the steel to flow more stably when it leaves the tundish flow stabilizer.

[0012] Additionally, the polygonal shape of the flow stabilizing plate with its multiple corners provides an especially large impact area for the incoming flow.

[0013] Optionally, for each flow guide projection, a dimension of the flow guide projection in the extension direction of the flow stabilizer body gradually decreases in a direction from the first end to the second end of the flow guide projection.

[0014] Optionally, each corner of the through-hole is in front of its corresponding first end in the extension direction of the flow stabilizer body.

[0015] Optionally, the flow stabilizer body has a polygonal cross-section, the plurality of flow guide protrusions correspond one-to-one to the plurality of side walls of the flow stabilizer body, and a first end of each flow guide protrusion extends to a corresponding side wall of the flow stabilizer body.

[0016] Optionally, the outer contour of the flow stabilizing plate is the same as the cross-sectional shape of the flow stabilizing body, and the corners of the through-holes are angularly offset relative to the straight edges of the flow stabilizing plate.

[0017] Optionally, the outer contour of the flow stabilizing plate is the same as the cross-sectional shape of the flow stabilizing body, and the corners of the through holes are opposite straight edges of the flow stabilizing plate.

[0018] Optionally, a flow stabilizing plate is vertically connected to a portion of the side wall such that the flow stabilizing plate divides the flow stabilizing body to form an upper cavity and a lower cavity.

[0019] Optionally, the tundish flow stabilizer further comprises a lip structure disposed at an upper end of the flow stabilizer body and perpendicularly connected to the sidewalls in the circumferential direction of the flow stabilizer body.

[0020] Optionally, an upper surface of the lip structure is flush with an end surface of the upper end of the flow stabilizer body.

[0021] Optionally, the lip structure comprises a plurality of lip portions connected head-to-tail, the plurality of lip portions corresponding one-to-one to a plurality of side walls of the flow stabilizer body, and each lip portion being vertically connected to a corresponding side wall.

[0022] Optionally, at least one of the flow guide protrusion, the flow stabilizing plate, and the lip structure has a chamfer.

[0023] Optionally, there is a gap between the second end of each flow guide protrusion and the geometric center of the bottom wall.

[0024] Optionally, the second ends of two adjacent flow guide protrusions are connected to each other.

[0025] Optionally, an end portion of the second end is square, and the plurality of second end portions surround a prism.

[0026] Optionally, end portions of the second ends are straight lines, and the plurality of second ends form a polygon.

[0027] Optionally, the flow guide protrusions cover 20% or less of a surface of the bottom wall of the flow stabilizer body.

[0028] Optionally, the plurality of flow guide protrusions are equally spaced about a central axis of the flow stabilizer body.

[0029] The present invention has at least the following beneficial effects. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 2 is a top view of a tundish flow stabilizer according to one embodiment of the present invention. [Figure 2] 2 is a cross-sectional view of the present invention taken along line AA shown in FIG. 1. [Figure 3] FIG. 1 is a structural schematic diagram of a tundish flow stabilizer according to one embodiment of the present invention. [Figure 4] FIG. 1 is a vertical cross-sectional view of a tundish flow stabilizer according to an embodiment of the present invention. [Figure 5] FIG. 1 is a cross-sectional view of a tundish flow stabilizer according to one embodiment of the present invention. [Figure 6] FIG. 2 is a cross-sectional view of another tundish flow stabilizer according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to clarify the technical problems solved by the present invention, the technical solutions used, and the technical effects achieved by the present invention, the technical solutions of the present invention will be further described below through specific embodiments with reference to the drawings. It will be understood that the specific embodiments described herein are merely for the purpose of explaining the present invention and do not limit the present invention. It should also be noted that, for ease of explanation, only parts relevant to the present invention are shown in the drawings, and not all parts are shown.

[0032] In this specification, unless otherwise clearly specified and defined, the terms "connected" and "fixed" should be understood in a broad sense and may mean, for example, fixedly connected, detachably connected, or forming a single entity, mechanically connected, or electrically connected, directly connected, or indirectly connected through an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art can understand the specific meaning of the above terms in this specification depending on the specific situation.

[0033] Unless otherwise clearly specified and defined, as used herein, placing a second feature "above" or "below" a first feature may include direct contact between the first and second features, or contact between the first and second features via another feature between them rather than direct contact. Furthermore, placing a first feature "above," "above," and "on top" of a second feature may include placing the first feature directly above and diagonally above the second feature, or simply indicate that the horizontal height of the first feature is higher than the horizontal height of the second feature. Placing a first feature "below," "below," and "below" a second feature may include placing the first feature directly below and diagonally below the second feature, or simply indicate that the horizontal height of the first feature is lower than the horizontal height of the second feature.

[0034] In the description of the present embodiment, orientations and positional relationships expressed by terms such as "upper," "lower," and "right" are based on orientations and positional relationships shown in the drawings, and are intended merely to facilitate description and simplify operation. They do not indicate or suggest that the devices or elements referred to must have a specific orientation or that they must be constructed or operated in a specific orientation, and therefore should not be construed as limiting the present specification. Furthermore, the terms "first" and "second" are used merely to distinguish between the two in the description and do not have any special meaning.

[0035] The present embodiment provides a tundish flow stabilizer that allows the steel flow entering it to dissipate most of its turbulent kinetic energy, so that the turbulent kinetic energy of the steel flow when it leaves is weaker, thereby avoiding the situation where the steel flow splashes or penetrates the bottom of the tundish.

[0036] As shown in Figures 1 to 3, the tundish flow stabilizer comprises a flow stabilizer body 1 and a plurality of flow guide protrusions 2 arranged inside the flow stabilizer body 1. The flow stabilizer body 1 has a hollow structure, and an opening is formed in the end face at the upper end of the flow stabilizer body 1, so that the flow of steel can flow into the flow stabilizer body 1 from this opening.

[0037] A plurality of flow guide protrusions 2 are provided within the flow stabilizer body 1 and fixed to the bottom wall 11 of the flow stabilizer body 1. Furthermore, as shown in FIG. 1 , the plurality of flow guide protrusions 2 are equally spaced around the central axis of the flow stabilizer body 1. In this embodiment, the plurality of flow guide protrusions 2 are radially arranged around the geometric center of the bottom wall 1. The first end 21 of each flow guide protrusion 2 extends to the side wall 12 of the flow stabilizer body 1. There is a gap between the second end 22 of each flow guide protrusion 2 and the geometric center of the bottom wall 11. That is, the second end 22 does not extend to the geometric center of the bottom wall 11. A flow passage through which steel flows is formed between two adjacent flow guide protrusions 2. Furthermore, as shown in FIG. 5 , the second ends 22 of two adjacent flow guide protrusions 2 are connected to each other. The dissipation effect of the tundish flow stabilizer functions even if the flow of steel is horizontally offset from the center of the tundish flow stabilizer.

[0038] In some embodiments, the end portions of the second ends 22 are straight or square, and when the second ends 22 are straight, the plurality of second ends 22 form a polygon (in FIG. 1, the plurality of second ends 22 surround a hexagon), as shown in FIG. 1, and when the end portions of the second ends 22 are square, the plurality of second ends 22 surround a prism.

[0039] In the tundish flow stabilizer according to this embodiment, multiple flow guide protrusions 2 are provided on the bottom wall 11 inside the flow guide protrusion body 1, forming multiple flow channels. The flow guide protrusions 2 then divide the steel flow entering the flow stabilizer body 1 into multiple steel flows, thereby achieving steel flow division. During the division process, the steel flow collides with the flow guide protrusions 2, dissipating a portion of its turbulent kinetic energy. The side walls of the flow stabilizer body 1 also dissipate a portion of the turbulent kinetic energy of the steel flow. Therefore, most of the turbulent kinetic energy of the steel flow can be dissipated by the flow stabilizer body 1, so that the turbulent kinetic energy of the steel flow is weakened when the steel flow leaves the flow stabilizer body 1. As a result, this tundish flow stabilizer effectively suppresses the turbulent kinetic energy of the steel flow, preventing the steel flow from splashing or penetrating the bottom of the tundish.

[0040] Optionally, as shown in FIGS. 2 and 4 , for each flow guide protrusion 2, the dimension of the flow guide protrusion 2 in the extension direction of the flow stabilizer body 1 gradually decreases from the first end 21 to the second end 22 of the flow guide protrusion 2. That is, the height of the flow guide protrusion 2 gradually decreases from the first end 21 to the second end 22. That is, the height of the first end 21 of the flow guide protrusion 2 is higher than the height of the second end 22. The upper surface of the flow guide protrusion 2 is a smooth flat or curved surface, and the longitudinal cross section of the flow guide protrusion 2 is a right-angled triangle. This structure of the flow guide protrusion 2 improves the steel flow guiding effect, making it easier for the steel flow to separate at the first end 21 and to reunite at the second end 22. It should be noted that the end portion of each second end 22 is straight to prevent the steel flow from generating turbulent kinetic energy again due to the impact when mixing at the second end 22.

[0041] Optionally, referring to FIG. 5 , the flow stabilizer body 1 has a polygonal cross-section, and the plurality of flow guide protrusions 2 correspond one-to-one with the plurality of side walls 12 of the flow stabilizer body 1, with the first end 21 of each flow guide protrusion 2 extending to the corresponding side wall 12 of the flow stabilizer body 1. This allows the length of the flow guide protrusions 2 to be shorter than when the flow guide protrusions 2 extend obliquely relative to the flow stabilizer body 1, thereby reducing the amount of material used and the weight of the tundish flow stabilizer. In some embodiments, the first end 21 of the flow guide protrusion 2 extends to the midline of the corresponding side wall 12, and in this embodiment, the flow stabilizer body 1 has a hexagonal cross-section, and six flow guide protrusions 2 are provided.

[0042] As shown in FIG. 6 , the tundish flow stabilizer further includes a flow stabilizer plate 3. The flow stabilizer plate 3 is disposed within the flow stabilizer body 1 and is connected perpendicularly to the side wall 12. In this embodiment, the flow stabilizer plate 3 is disposed parallel to the bottom wall 11. The flow stabilizer plate 3 has a through-hole 31 penetrating the flow stabilizer plate 3 in the extension direction of the flow stabilizer body 1. The through-hole 31 serves to allow the steel to flow in. The flow stabilizer plate 3 guides the steel flow. The flow stabilizer plate 3, together with the flow guide protrusions 2 and the side wall 12, forms a semi-enclosed space, which effectively controls the flow velocity of the steel flow and changes the direction of the steel flow. The steel flow can dissipate most of its turbulent kinetic energy by flowing through this semi-enclosed space, thereby stabilizing the steel flow and allowing the steel to flow more stably when it leaves the tundish flow stabilizer.

[0043] Continuing to refer to FIG. 6 , the through-hole 31 is a polygonal hole, and the multiple corners 311 of the through-hole 31 correspond one-to-one to the first ends 21 of the multiple flow guide protrusions 2. Each corner is located forward of the corresponding first end 21 in the extension direction of the flow stabilizer body 1. That is, each corner 311 of the through-hole 31 is located directly above the first end 21 of one flow guide protrusion 2. Preferably, the outer contour of the flow stabilizer plate 3 is the same as the cross-sectional shape of the flow stabilizer body 1, and the corners 311 of the through-hole 31 are offset from each other and located opposite the straight edges of the flow stabilizer plate 3, thereby optimizing the flow field of the steel flow after it enters the flow stabilizer body 1. This improves the removal rate of inclusions from the steel flow.

[0044] In this embodiment, the flow stabilizing plate 3 is vertically connected to the middle of the side wall 12 in the extension direction of the flow stabilizer body 1, so that the flow stabilizing plate 3 divides the flow stabilizer body 2 into an upper cavity and a lower cavity. Each cavity can be used to dissipate the turbulent kinetic energy of the steel flow, which further improves the flow stabilizing effect of the present tundish flow stabilizer.

[0045] Moreover, the flow guide protrusions 2, which gradually increase in height, cooperate with the flow stabilizing plates 3 to confine the steel flow into a number of semi-closed spaces, thereby further improving the results in terms of dissipating the kinetic energy of the steel flow.

[0046] Referring to FIG. 4 , the present tundish flow stabilizer optionally further includes a lip structure 4. The lip structure 4 is disposed at the upper end of the flow stabilizer body 1 and is vertically connected to the side wall 12 in the circumferential direction of the flow stabilizer body 1, i.e., the lip structure 4 is annular. The lip structure 4 is used to guide the steel flow and, together with the flow stabilizing plate 3, forms a double flow stabilization structure, thereby improving the reliability of the present tundish flow stabilizer. During the ladle replacement process, the steel flow has a high flow rate and a fast velocity, and the lip structure 4 can reduce the flow velocity of the steel flow again and, in cooperation with the flow stabilizing plate 3, ensure that the flow velocity of the steel flow is within an appropriate range.

[0047] In this embodiment, as shown in Figure 2, the upper surface of the lip structure 4 is flush with the end face at the top end of the flow stabilizer body 1, preventing the lip structure 4 from obstructing the entry of steel flow into the flow stabilizer body 1. In some embodiments, the flow stabilizer body 1, flow guide protrusion 2, flow stabilizing plate 3 and lip structure 4 are an integrally formed structure and can be formed in a single operation by casting.

[0048] Optionally, referring to Fig. 4, the lip structure 4 includes a plurality of lip portions 41 connected head-to-tail. The plurality of lip portions 41 correspond one-to-one to the plurality of side walls 12 of the flow stabilizer body 1, and each lip portion 41 is connected perpendicularly to the corresponding side wall 12. The outer contour of the lip structure 4 matches the cross section of the flow stabilizer body 1, so that the lip structure 4 can be offset relative to the flow stabilizing plate 3, which can guide the steel flow in multiple directions and facilitate the formation of multiple flow paths, thereby further improving the flow stabilization effect of the present tundish flow stabilizer.

[0049] In this embodiment, as shown in Fig. 4, the inner edge of the lip structure 4 has a chamfer, which is referred to as a third chamfer 42 for ease of identification. The third chamfer 42 can prevent vortexes from forming in the steel flow. Similarly, as shown in Fig. 5, the upper portion of the flow guide protrusion 2 has a first chamfer 23, and as shown in Fig. 2, the side of the flow stabilizing plate 3 facing the bottom wall 1 has a second chamfer 32.

[0050] It should be noted that the tundish flow stabilizer according to this embodiment, like a normal flow stabilizer, must be fixed to prevent the tundish flow stabilizer from shifting or floating during casting. Specifically, the tundish flow stabilizer is installed in a predetermined position, its edge is covered with a tundish processing lining, and the processing lining is baked and solidified to fix the tundish flow stabilizer.

[0051] In this embodiment of the tundish flow stabilizer, flow guide protrusions 2 protrude from the bottom of the flow stabilizer body 1, dividing the pouring steel stream into six streams and avoiding turbulence caused by high-speed steel impinging on the flow stabilizer body 1. The flow guide protrusions 2 protruding from the bottom and the flow stabilizer plates protruding from the side walls form a semi-enclosed space, confining the steel flow within. This dissipates most of the kinetic energy of the steel flow, achieving a truly fluid-stabilizing effect. An optional annular lip structure 4 is provided on the top of the flow stabilizer body 1, which can slow down the steel flow velocity and further stabilize the steel flow. An upward flow is formed, further promoting the floating of inclusions in the steel flow.

[0052] The above-described embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above-described embodiments. Various changes and modifications can be made without departing from the spirit and scope of the present invention, and all such changes and modifications are within the scope of the claims of the present invention. The scope of the claims of this specification is defined by the appended claims and their equivalents. [Explanation of symbols]

[0053] 1 Flow stabilizer body 2 Flow guide protrusion 3 Flow Stabilizing Plates 4 Lip structure 11 Bottom wall 12 Side wall 21 First end 22 Second end 23 First chamfer 31 Through hole 311 Corner 32 Second chamfer 41 Lip 42 Third chamfer

Claims

1. A tundish flow stabilizer comprising a flow stabilizer body (1) and a plurality of flow guide protrusions (2), The flow stabilizer body (1) has a hollow structure, and the plurality of flow guide protrusions (2) are arranged in the flow stabilizer body (1) and fixed to a bottom wall (11) of the flow stabilizer body (1); A first end (21) of each of the flow guide protrusions (2) extends to a side wall (12) of the flow stabilizer body (1); A flow path is formed between two adjacent flow guide protrusions (2), The tundish flow stabilizer comprises a flow stabilizing plate (3), The flow stabilizing plate (3) is provided in the flow stabilizer body (1) and is connected vertically to the side wall (12); The flow stabilizing plate (3) has a polygonal through-hole (31) penetrating the flow stabilizing plate (3) in the extension direction of the flow stabilizer body (1), The plurality of corners (311) of the through hole (31) correspond one-to-one to the plurality of first ends (21), A tundish flow stabilizer, wherein each corner (311) of the through hole (31) is positioned directly above the first end (21) of one of the flow guide projections (2).

2. 2. The tundish flow stabilizer according to claim 1, wherein for each flow guide protrusion (2), the dimension of the flow guide protrusion (2) in the extension direction of the flow stabilizer body (1) gradually decreases in a direction from the first end (21) to the second end (22) of the flow guide protrusion (2).

3. 10. The tundish flow stabilizer according to claim 9, wherein each corner (311) of the through hole (31) is located in front of the corresponding first end (21) in the extension direction of the flow stabilizer body (1).

4. 10. The tundish flow stabilizer according to claim 9, wherein the flow stabilizer body (1) has a polygonal cross section, the plurality of flow guide protrusions (2) correspond one-to-one with the plurality of side walls (12) of the flow stabilizer body (1), and the first end (21) of each of the flow guide protrusions (2) extends to the corresponding side wall (12) of the flow stabilizer body (1).

5. 5. The tundish flow stabilizer according to claim 4, wherein the outer contour of the flow stabilizing plate (3) is identical to the cross-sectional shape of the flow stabilizer body (1), and the corners (311) of the through holes (31) are angularly offset from the straight edges of the flow stabilizing plate (3).

6. 6. The tundish flow stabilizer according to claim 4 or 5, characterized in that the outer contour of the flow stabilizing plate (3) is identical to the cross-sectional shape of the flow stabilizer body (1), and the corner (311) of the through hole (31) is on the opposite side of a straight edge of the flow stabilizing plate (3).

7. 10. The tundish flow stabilizer according to claim 9, wherein the flow stabilizing plate (3) is connected vertically to a portion of the side wall (12) so as to separate the flow stabilizer body (2) into an upper cavity and a lower cavity.

8. 10. The tundish flow stabilizer according to any one of the preceding claims, further comprising a lip structure (4), the lip structure (4) being arranged at an upper end of the flow stabilizer body (1) and being connected perpendicularly to the side wall (12) in the circumferential direction of the flow stabilizer body (1).

9. 9. The tundish flow stabilizer according to claim 8, wherein the upper surface of the lip structure (4) is flush with the end surface of the upper end of the flow stabilizer body (1).

10. 10. The tundish flow stabilizer according to claim 8 or 9, characterized in that the lip structure (4) comprises a plurality of lip portions (41) connected head-to-tail, the plurality of lip portions (41) corresponding one-to-one to the plurality of side walls (12) of the flow stabilizer body (1), and each of the lip portions (41) is connected perpendicularly to the corresponding side wall (12).

11. 11. The tundish flow stabilizer according to any one of claims 8 to 10, characterized in that the lip structure (4) has a chamfer.

12. 10. A tundish flow stabilizer according to any one of the preceding claims, characterized in that there is a gap between the second end (22) of each flow guide projection (2) and the geometric center of the bottom wall (11).

13. 10. A tundish flow stabilizer according to any one of the preceding claims, characterized in that the second ends (22) of two adjacent flow guide projections (2) are connected to each other.

14. 14. The tundish flow stabilizer of claim 13, wherein an end portion of the second end portion (22) is square, and the plurality of second end portions (22) surround a prism.

15. 14. The tundish flow stabilizer of claim 13, wherein end portions of the second ends (22) are straight, and the plurality of second ends (22) form a polygon.

16. 10. The tundish flow stabilizer according to any one of the preceding claims, characterized in that the flow guide protrusions (2) cover no more than 20% of the surface of the bottom wall (11) of the flow stabilizer body (1).

17. 10. The tundish flow stabilizer according to any one of the preceding claims, characterized in that the plurality of flow guide protrusions (2) are equally spaced around the central axis of the flow stabilizer body (1).

18. 10. A tundish flow stabilizer according to any one of the preceding claims, characterized in that the flow guide protrusions (2) have chamfers.

19. 10. A tundish flow stabilizer according to any one of the preceding claims, characterized in that the flow stabilizing plate (3) has a chamfer.

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