Tundish slag blocking wall with high erosion resistance

Abstract

The utility model discloses a tundish slag blocking wall with high erosion resistance, which comprises a first slag blocking wall body, second slag blocking wall bodies, steel flowing ports and a reinforcing sleeve, the left side and the right side of the first slag blocking wall body are fixedly connected with the second slag blocking wall body, the first slag blocking wall body and the second slag blocking wall body are provided with the steel flowing ports, and the reinforcing sleeve is fixedly connected with the first slag blocking wall body and the second slag blocking wall body. Reinforcing sleeves are fixedly mounted on the first mounting plate and the second mounting plate, and the first slag stopping wall body and the second slag stopping wall body are each composed of a reinforced concrete layer, an anti-corrosion layer and a wear-resisting layer. Through the arrangement of the wear-resisting layer and the anti-corrosion layer, the wear-resisting layer and the anti-corrosion layer are arranged on the outer side of the slag stopping wall body, so that effective protection measures can be improved, the wear-resisting layer can effectively resist scouring and friction, abrasion of the slag stopping wall is reduced, and the anti-corrosion layer can isolate corrosive media in the environment; the slag blocking wall is prevented from being damaged by chemical corrosion and electrochemical corrosion, the structural integrity and stability of the slag blocking wall are kept, and therefore the service life of the slag blocking wall is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of tundish slag retaining walls, in particular to a tundish slag retaining wall with high erosion resistance. Background Art

[0002] The slag retaining wall of the tundish plays a key role in the steel smelting process. The slag retaining wall, also known as the weir, is a prefabricated part made of refractory castables. It spans the entire width of the tundish and extends from the upper part of the tundish to a certain distance from the bottom of the tundish. The molten steel can flow through the steel outlet. Its main function is to retain slag, that is, to further remove inclusions in the molten steel, thereby improving the cleanliness of the molten steel.

[0003] The existing tundish slag retaining wall is a key structure to prevent slag from flowing into molten steel. It is in direct contact with these high-temperature, corrosive substances. Therefore, it must have sufficient corrosion resistance to withstand the erosion of this harsh environment and maintain its structural integrity and stability.

[0004] For example, a slag retaining wall for a continuous casting tundish is disclosed with announcement number CN204094086U. The straight wall, the first flow steel hole and the second flow steel hole in the patent are not provided with a high corrosion resistance structure. The molten steel flows out directly from the first flow steel hole and the second flow steel hole. The flow steel hole is the key channel for the molten steel to flow from the tundish to the next process. If the slag retaining wall and the flow steel hole have poor corrosion resistance, their surfaces are susceptible to erosion and wear, which not only causes slag and other impurities to enter the molten steel, thereby reducing the quality of the molten steel, but also causes damage to the wall, and is unable to effectively block slag and other impurities, reducing the service life of the slag retaining wall.

[0005] Therefore, it is necessary to invent a tundish slag retaining wall with high corrosion resistance to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a tundish slag retaining wall with high erosion resistance so as to solve the problem of poor erosion resistance in the technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tundish slag retaining wall with high corrosion resistance, comprising a No. 1 slag retaining wall body, a No. 2 slag retaining wall body, a steel flow port and a reinforcing sleeve, the left and right sides of the No. 1 slag retaining wall body are fixedly connected with the No. 2 slag retaining wall body, the No. 1 slag retaining wall body and the No. 2 slag retaining wall body are provided with steel flow ports, a No. 1 mounting plate is provided at the steel flow port of the No. 1 slag retaining wall body, a No. 2 mounting plate is provided at the steel flow port of the No. 2 slag retaining wall body, reinforcing sleeves are fixedly installed on the No. 1 mounting plate and the No. 2 mounting plate, a filter is provided inside the reinforcing sleeve, the No. 1 slag retaining wall body and the No. 2 slag retaining wall body are composed of a reinforced concrete layer, an anti-corrosion layer and a wear-resistant layer.

[0008] Preferably, a lifting ring is fixedly installed on the top of the No. 2 slag retaining wall body, and two lifting rings are provided. The lifting ring enables the slag retaining wall to be stably and safely fixed and moved during lifting and transportation.

[0009] Preferably, two No. 2 mounting plates are provided, and the two No. 2 mounting plates are centrally symmetrical with respect to the No. 1 slag retaining wall body, so that the No. 2 mounting plates are convenient for strengthening the stable installation of the casing inside the steel flow port.

[0010] Preferably, the reinforcing sleeve is sleeved inside the steel flow mouth, and the outer wall of the reinforcing sleeve matches the inner wall of the steel flow mouth, so that the design of the reinforcing sleeve enhances the structural strength of the steel flow mouth, which can significantly improve the deformation resistance and impact resistance of the steel flow mouth, ensuring that it can remain stable during use.

[0011] Preferably, the inner wall of the reinforcing sleeve is coated with a high-temperature anti-oxidation coating, so that the high-temperature anti-oxidation coating can effectively resist the erosion of molten steel and steel slag, thereby extending the service life of the steel flow mouth.

[0012] Preferably, six filter screens are provided, and the outer diameters of the six filter screens are closely fitted with the inner diameter of the reinforcing sleeve. The filter screens are made of stainless steel, so that the filter screens can further filter impurities, inclusions and particulate matter in the molten steel, which helps to further improve the quality of the molten steel and the smelting efficiency.

[0013] Preferably, the No. 1 mounting plate and the No. 2 mounting plate are provided with fixing bolts, the fixing bolts penetrate into the No. 1 slag retaining wall body and the No. 2 slag retaining wall body, the fixing bolts are threadedly connected with fixing nuts, the outer wall threads of the fixing bolts cooperate with the inner wall threads of the fixing nuts, so that the fixing bolts and the fixing nuts can ensure the stability of the No. 1 mounting plate and the No. 2 mounting plate installed on the No. 1 slag retaining wall body and the No. 2 slag retaining wall body.

[0014] Preferably, the reinforced concrete layer is arranged in the innermost layer of the No. 1 slag retaining wall body and the No. 2 slag retaining wall body, an anti-corrosion layer is arranged on the outside of the reinforced concrete layer, and a wear-resistant layer is arranged on the outside of the anti-corrosion layer, and the wear-resistant layer is made of zirconium oxide coating, so that the anti-corrosion layer and the wear-resistant layer can improve the oxidation resistance of the slag retaining wall.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] 1. Through the setting of the reinforcement sleeve, the reinforcement sleeve is made of erosion-resistant materials, and the inner wall of the reinforcement sleeve is coated with a high-temperature anti-oxidation coating, so the reinforcement sleeve is inserted inside the steel flow mouth to form a protective barrier to prevent the molten steel from directly scouring and corroding the steel flow mouth, which can significantly enhance the anti-corrosion ability of the steel flow mouth, effectively resist the erosion of molten steel, steel slag and other substances, and extend the service life of the steel flow mouth. When the molten steel passes through the steel flow mouth, the filter screen on the reinforcement sleeve can capture and block the solid particles therein, so that the molten steel can be purified. At the same time, the reinforcement sleeve adopts a detachable design. When the reinforcement sleeve or the filter screen is eroded or damaged, it can be easily disassembled and replaced without replacing the entire steel flow mouth, which greatly simplifies the maintenance process and reduces maintenance time and cost;

[0017] 2. By setting up a wear-resistant layer and an anti-corrosion layer, setting up a wear-resistant layer and an anti-corrosion layer on the outside of the slag retaining wall body can improve effective protection measures. The wear-resistant layer can effectively resist such scouring and friction and reduce the wear of the slag retaining wall, while the anti-corrosion layer can isolate the corrosive media in the environment and prevent the slag retaining wall from being damaged by chemical corrosion and electrochemical corrosion, thereby maintaining its structural integrity and stability and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the overall back three-dimensional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the explosion structure of the No. 1 slag retaining wall body and the mounting plate of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the cross section of the water-passing cylinder of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional three-dimensional structure of the No. 1 slag retaining wall body of the utility model;

[0023] Figure 6 For the utility model Figure 5 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0024] Description of reference numerals:

[0025] 1. No. 1 slag retaining wall body; 2. No. 2 slag retaining wall body; 3. Lifting ring; 4. Steel flow port; 5. No. 1 mounting plate; 6. No. 2 mounting plate; 7. Reinforced casing; 8. High-temperature anti-oxidation coating; 9. Filter screen; 10. Fixing bolts; 11. Fixing nuts; 12. Reinforced concrete layers; 13. Anti-corrosion layer; 14. Wear-resistant layer. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model provides Figure 1-6 A tundish slag retaining wall with high corrosion resistance is shown, comprising a No. 1 slag retaining wall body 1, a No. 2 slag retaining wall body 2 being fixedly connected to the left and right sides of the No. 1 slag retaining wall body 1, a lifting ring 3 being fixedly installed on the top of the No. 2 slag retaining wall body 2, two lifting rings 3 being provided, a steel flow port 4 being opened on the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2, a No. 1 mounting plate 5 being provided at the steel flow port 4 of the No. 1 slag retaining wall body 1, a No. 2 mounting plate 6 being provided at the steel flow port 4 of the No. 2 slag retaining wall body 2, a reinforcing sleeve 7 being fixedly installed on the No. 1 mounting plate 5 and the No. 2 mounting plate 6, a filter screen 9 being provided inside the reinforcing sleeve 7, the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2 being composed of a reinforced concrete layer 12, an anti-corrosion layer 13 and a wear-resistant layer 14.

[0028] There are two No. 2 mounting plates 6, and the two No. 2 mounting plates 6 are mutually symmetrical about the center of the No. 1 slag retaining wall body 1. The reinforcing sleeve 7 is sleeved inside the steel flow port 4, and the outer wall of the reinforcing sleeve 7 matches the inner wall of the steel flow port 4. The inner wall of the reinforcing sleeve 7 is coated with a high-temperature anti-oxidation coating 8. There are six filter screens 9, and the outer diameters of the six filter screens 9 are closely fitted with the inner diameters of the reinforcing sleeve 7. The filter screens 9 are made of stainless steel. The No. 1 mounting plate 5 and the No. 2 mounting plate 6 are provided with fixing bolts 10 The fixing bolt 10 penetrates the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2, and the fixing nut 11 is threadedly connected to the fixing bolt 10. The outer wall thread of the fixing bolt 10 cooperates with the inner wall thread of the fixing nut 11. The reinforced concrete layer 12 is arranged at the innermost layer of the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2. An anti-corrosion layer 13 is arranged on the outside of the reinforced concrete layer 12, and a wear-resistant layer 14 is arranged on the outside of the anti-corrosion layer 13. The wear-resistant layer 14 is made of zirconium oxide coating.

[0029] The reinforcing sleeve 7 is sleeved on the steel flow mouth 4 to enhance the structural strength of the steel flow mouth 4, and can significantly improve the deformation resistance and impact resistance of the steel flow mouth 4. The high-temperature anti-oxidation coating 8 is effectively resistant to the erosion of molten steel and steel slag, and prolongs the service life of the steel flow mouth 4. The filter screen 9 is capable of capturing and blocking solid particles therein, so that the molten steel can be purified. At the same time, the anti-corrosion layer 13 and the wear-resistant layer 14 are effective protective measures. The wear-resistant layer 13 can effectively resist such scouring and friction, and reduce the wear of the slag retaining wall, while the anti-corrosion layer 14 can isolate the corrosive medium in the environment, prevent the slag retaining wall from being damaged by chemical corrosion and electrochemical corrosion, and effectively improve the service life of the slag retaining wall of the intermediate ladle.

[0030] Working principle of this utility model:

[0031] Refer to the instruction manual Figure 1-6 When using the utility model, firstly, the tundish slag retaining wall is stably installed in a suitable position. When molten steel impacts the slag retaining wall body, the molten steel will flow out through the steel flow port 4. Before the molten steel flows out from the steel flow port 4, the impurities, inclusions and particulate matter in the molten steel can be filtered through the filter screen 9, which helps to further improve the quality of the molten steel and the smelting efficiency. When the molten steel flows out through the steel flow port 4, a protective barrier can be formed by the reinforced sleeve 7 arranged inside the steel flow port 4 to prevent the molten steel from directly scouring and corroding the steel flow port 4, which can significantly enhance the corrosion resistance of the steel flow port 4, effectively resist the corrosion of molten steel, steel slag and other substances, and extend the service life of the steel flow port 4. In addition, the wear-resistant layer 13 and the anti-corrosion layer 14 are arranged on the outside of the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2, which can improve the effective protection measures, effectively improve, prevent the corrosion resistance of the No. 1 slag retaining wall body 1 and the No. 2 slag retaining wall body 2, avoid the slag retaining wall from being damaged by chemical corrosion and electrochemical corrosion, and effectively improve the service life of the slag retaining wall.

Claims

1. A tundish slag retaining wall with high corrosion resistance, comprising a No. 1 slag retaining wall body (1), a No. 2 slag retaining wall body (2), a steel flow port (4) and a reinforcing sleeve (7), characterized in that: The left and right sides of the No. 1 slag retaining wall body (1) are fixedly connected to the No. 2 slag retaining wall body (2); the No. 1 slag retaining wall body (1) and the No. 2 slag retaining wall body (2) are provided with steel flow ports (4); the No. 1 mounting plate (5) is provided at the steel flow port (4) of the No. 1 slag retaining wall body (1); the No. 2 mounting plate (6) is provided at the steel flow port (4) of the No. 2 slag retaining wall body (2); the No. 1 mounting plate (5) and the No. 2 mounting plate (6) are fixedly installed with a reinforcing sleeve (7); a filter screen (9) is provided inside the reinforcing sleeve (7); the No. 1 slag retaining wall body (1) and the No. 2 slag retaining wall body (2) are composed of a reinforced concrete layer (12), an anti-corrosion layer (13) and a wear-resistant layer (14).

2. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: A lifting ring (3) is fixedly installed on the top of the No. 2 slag retaining wall body (2), and two lifting rings (3) are provided.

3. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: Two No. 2 mounting plates (6) are provided, and the two No. 2 mounting plates (6) are centrally symmetrical with respect to the No. 1 slag retaining wall body (1).

4. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: The reinforcing sleeve (7) is sleeved inside the steel flow port (4), and the outer wall of the reinforcing sleeve (7) matches the inner wall of the steel flow port (4).

5. The tundish slag retaining wall with high corrosion resistance according to claim 4, characterized in that: The inner wall of the reinforcement sleeve (7) is coated with a high-temperature anti-oxidation coating (8).

6. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: Six filter screens (9) are provided, and the outer diameters of the six filter screens (9) are closely fitted with the inner diameter of the reinforcing sleeve (7). The filter screens (9) are made of stainless steel.

7. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: The first mounting plate (5) and the second mounting plate (6) are provided with fixing bolts (10), the fixing bolts (10) penetrate the first slag retaining wall body (1) and the second slag retaining wall body (2), the fixing bolts (10) are threadedly connected with fixing nuts (11), and the outer wall threads of the fixing bolts (10) match the inner wall threads of the fixing nuts (11).

8. The tundish slag retaining wall with high corrosion resistance according to claim 1, characterized in that: The reinforced concrete layer (12) is arranged at the innermost layer of the No. 1 slag retaining wall body (1) and the No. 2 slag retaining wall body (2), an anti-corrosion layer (13) is arranged on the outer side of the reinforced concrete layer (12), and a wear-resistant layer (14) is arranged on the outer side of the anti-corrosion layer (13), and the wear-resistant layer (14) is made of zirconium oxide coating.

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