阅读说明：本技术 一种中间包稳流器 (Tundish current stabilizer ) 是由 孙忠权 寻忠忠 曾令宇 刘志明 万翔 黄回亮 谭奇峰 王冠 郭峻宇 叶德新 于 2020-06-30 设计创作，主要内容包括：本申请涉及炼钢领域,具体而言,涉及一种中间包稳流器。中间包稳流器包括：底板,依次连接并围设于底板四周的五个侧板,五个侧板均与顶檐连接,顶檐包括五个悬边；第二悬边设置有向背离侧板凸起的凸部,第五悬边的顶面与底板之间的距离逐渐减小；第四悬边的顶面与底板之间的距离逐渐减小。钢水浇注于中间包稳流器后,钢水沿凸部的两侧分流,凸部的顶端、第四悬边的顶部、第五悬边的顶部围设而成活跃区,钢水进入容纳空间后各流钢水的浓度平均标准差小,延长了钢水在容纳空间内停留时间。本申请实施例提供的中间包稳流器有利于降低中间包流场死区体积,提高活塞流体积分率。(The application relates to the field of steelmaking, in particular to a tundish current stabilizer. The tundish current stabilizer comprises: the bottom plate is sequentially connected with and surrounds five side plates arranged on the periphery of the bottom plate, the five side plates are all connected with the top eaves, and the top eaves comprises five hanging edges; the second suspension edge is provided with a convex part protruding away from the side plate, and the distance between the top surface of the fifth suspension edge and the bottom plate is gradually reduced; the distance between the top surface of the fourth suspension edge and the bottom plate is gradually reduced. After the molten steel is poured into the tundish current stabilizer, the molten steel is divided along two sides of the convex part, the top end of the convex part, the top of the fourth suspension edge and the top of the fifth suspension edge are surrounded to form an active area, the average standard deviation of the concentration of each flow of molten steel is small after the molten steel enters the accommodating space, and the residence time of the molten steel in the accommodating space is prolonged. The tundish current stabilizer provided by the embodiment of the application is favorable for reducing the volume of a flow field dead zone of the tundish and improving the volume fraction of piston flow.)

1. A tundish current regulator, comprising:

a bottom plate, a plurality of first connecting plates,

the five side plates are sequentially connected and arranged around the bottom plate in an enclosing mode, the five side plates and the bottom plate jointly enclose a containing space, and the wall body of the containing space on the bottom plate is a pentagonal impact surface with three right angles; and

the five side plates are connected with the top eaves, the top eaves are provided with inlets communicated with the accommodating space, and the inlets are smaller than the opening of the accommodating space;

the top eave comprises a first hanging edge, a second hanging edge, a third hanging edge, a fourth hanging edge and a fifth hanging edge which are sequentially connected and correspond to the five side plates one by one;

the second suspension edge is provided with a convex part protruding away from the side plate, and the top end of the convex part is positioned in the middle of the second suspension edge;

the distance between the top surface of the fourth suspension edge and the impact surface is gradually reduced along the direction close to the first suspension edge; the distance between the top surface of the fifth suspension edge and the impact surface is gradually reduced along the direction close to the third suspension edge;

the two side plates corresponding to the fourth suspension edge and the fifth suspension edge are mutually vertical;

the side plates corresponding to the first hanging edges are respectively perpendicular to the two adjacent side plates.

2. The tundish flow stabilizer according to claim 1, wherein the included angles between the surfaces of the fourth and fifth depending edges remote from the impact surface and the impact surface are the same.

3. The tundish flow stabilizer according to claim 1, wherein the angle between the surface of the fourth depending edge remote from the impact surface and the impact surface is 40-50 °; the included angle between the surface of the fifth suspension edge far away from the impact surface and the impact surface is 40-50 degrees.

4. The tundish flow stabilizer according to claim 1, wherein the top surface of the convex part is two intersecting and symmetrical inclined surfaces, and the included angle between the inclined surfaces and the impact surface is 40-50 °.

5. The tundish flow stabilizer according to claim 1, wherein the top end of the convex part is collinear with the connection of the fifth and fourth overhangs.

6. A tundish flow stabilizer according to any one of claims 1 to 5, characterised in that the surfaces of the third depending edge and the first depending edge facing away from the impact surface are both sloped; and the position where the distance between the third hanging edge, the first hanging edge and the impact surface is the largest is located at the inlet edge.

7. A tundish flow stabilizer according to any one of claims 1 to 5, characterised in that the angle between the surface of the third depending edge facing away from the impact surface and the impact surface is from 10 to 20 °.

8. A tundish flow stabilizer according to any one of claims 1 to 5, wherein the faces of the five side plates remote from the containment space are bevelled.

9. A tundish flow stabilizer according to any one of claims 1 to 5, wherein the face of the side plate facing the containment space is perpendicular to the impact face.

10. A tundish flow stabilizer according to any one of claims 1 to 5, wherein the pentagonal impact surface is a plane of symmetry.

Technical Field

The application relates to the field of steelmaking, in particular to a tundish current stabilizer.

Background

The flow stabilizer is one part of the internal structure of a tundish of a five-flow bloom continuous casting machine, the flow stabilizer is installed at the bottom of an impact area of the tundish, the center of the flow stabilizer is positioned right below a long nozzle, and ladle molten steel is firstly injected into the flow stabilizer from the long nozzle and flows into a working area after being buffered by the flow stabilizer.

The existing current stabilizer is mostly in a quadrilateral structure with a hollow inner cavity, and the problems that casting blanks are uneven in cleanliness, large in quality difference among the casting blanks and the like exist in the casting process of the existing current stabilizer are solved.

Disclosure of Invention

An object of the embodiment of the application is to provide a tundish current stabilizer, which aims to solve the problems that the cleanliness of the existing casting blank is not uniform and the difference of the internal quality of the casting blank is large.

The application provides a middle package current regulator, middle package current regulator includes:

a base plate;

the five side plates are sequentially connected and arranged around the bottom plate in an enclosing manner, the five side plates and the bottom plate jointly enclose a containing space, and the wall body of the containing space on the bottom plate is a pentagonal impact surface with three right angles; and

the top eaves are connected with the five side plates, each top eaves is provided with an inlet communicated with the accommodating space, and the inlets are smaller than the openings of the accommodating spaces;

the top eave comprises a first suspended edge, a second suspended edge, a third suspended edge, a fourth suspended edge and a fifth suspended edge which are sequentially connected and correspond to the five side plates one by one;

the second suspension edge is provided with a convex part protruding away from the side plate, and the top end of the convex part is positioned in the middle of the second suspension edge;

the distance between the top surface of the fourth suspension edge and the impact surface is gradually reduced along the direction close to the first suspension edge;

the distance between the top surface of the fifth suspension edge and the impact surface is gradually reduced along the direction close to the third suspension edge;

the two side plates corresponding to the fourth suspension edge and the fifth suspension edge are mutually vertical;

the side plates corresponding to the first suspension edges are respectively vertical to the two adjacent side plates.

The tundish current stabilizer is internally provided with three right-angled pentagonal impact surfaces, and the second suspension edge is provided with a convex part protruding away from the side plate; and the distances between the top surfaces of the fourth suspension edge and the fifth suspension edge and the impact surface are gradually reduced. After the molten steel is poured into the tundish current stabilizer, the molten steel is divided along two sides of the convex part, the top end of the convex part, the top of the fourth suspension edge and the top of the fifth suspension edge are surrounded to form an active area, the average standard deviation of the concentration of each flow of molten steel is small after the molten steel enters the accommodating space, and the residence time of the molten steel in the accommodating space is prolonged. The tundish current stabilizer provided by the embodiment of the application is favorable for reducing the volume of a flow field dead zone of the tundish and improving the volume fraction of piston flow.

In some embodiments of the present application, the included angle between the surface of the fourth hanging edge and the surface of the fifth hanging edge far away from the impact surface and the impact surface is the same.

The fourth suspension edge and the fifth suspension edge adopt the arrangement mode, so that the temperature of each flow of molten steel is uniform and the flowing consistency of the molten steel is better in the pouring process.

In some embodiments of the present application, the angle between the surface of the fourth suspension edge facing away from the impact surface and the impact surface is 40-50 °; the surface of the fifth suspension edge far away from the impact surface forms an included angle of 40-50 degrees with the impact surface.

In some embodiments of the present application, the top surface of the protrusion is two intersecting and symmetrical inclined surfaces, and the angle between the inclined surfaces and the impact surface is 40-50 °.

In some embodiments of the present application, an intersection line of two inclined surfaces constituting the convex portion is collinear with a connection of the fifth and fourth hanging edges.

In some embodiments of the present application, the surfaces of the third hanging edge and the first hanging edge facing away from the impact surface are both inclined surfaces; and the position where the distance between the third hanging edge, the first hanging edge and the impact surface is the largest is positioned at the inlet edge.

In some embodiments of the present application, the angle between the surface of the third depending edge facing away from the impact surface and the impact surface is 10-20 °.

In some embodiments of the present application, the surfaces of the five side plates away from the accommodating space are inclined surfaces.

In some embodiments of the present application, a side of the side plate facing the receiving space is perpendicular to the impact surface.

In some embodiments of the present application, the pentagonal impact surface is a plane of symmetry.

The tundish current stabilizer provided by the embodiment of the application has at least the following beneficial effects: the perisporium adopts the pentagon, and the top is upwards protruding, through adopting above-mentioned specific structure and pentagon impact surface, can increase the volume in middle active area, has solved the metallurgical effect that each class of temperature of five class of package tundishes in the middle of the bloom was even and the inclusion was got rid of, improves the casting blank cleanliness factor, improves bloom internal quality.

The problem of difficulty in casting while flowing is effectively solved, the temperature difference of molten steel among flows is reduced to be within 0.2 ℃, the ratio of the size of inclusions in the high-quality bearing steel, which is smaller than 2 mu m, reaches 94.44%, and the casting success rate of the while flowing reaches more than 99%.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 shows a schematic structural diagram of a tundish current regulator provided in an embodiment of the present application.

Fig. 2 is a schematic structural diagram illustrating a first view angle of a bottom plate and a side plate according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram illustrating a second view angle of the bottom plate and the side plate according to the embodiment of the present application.

Fig. 4 shows a schematic structural diagram of a first viewing angle of a eave provided by the embodiment of the present application.

Fig. 5 shows a schematic structural diagram of a second viewing angle of the eave provided by the embodiment of the present application.

Fig. 6 shows a structural schematic diagram of another view angle of the tundish current regulator provided by the embodiment of the application.

Fig. 7 shows a schematic structural diagram of a second suspension edge provided in an embodiment of the present application.

Fig. 8 shows a schematic structural diagram of a fourth suspended edge and a fifth suspended edge provided in the embodiment of the present application.

Icon: 100-tundish current stabilizer; 101-a housing space; 102-an impact surface; 103-an inlet; 110-a base plate; 120-side plate; 130-top eaves; 131-a first hanging edge; 132-a second hanging edge; 133-a third hanging edge; 134-fourth hanging edge; 135-fifth dangling edge; 141-convex part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.