Impact-resistant composite masonry structure for impact area of tundish

Abstract

The impact-resistant composite masonry structure for the impact area of the tundish comprises a second impact plate, a first impact plate is installed on the surface of the second impact plate, a permanent layer is fixedly arranged on the periphery of the second impact plate, and a permanent layer is fixedly arranged on the periphery of the bottom of the first impact plate. And the middle part and the top part of the first impact plate are fixedly provided with a ladle wall dry material layer. The bottom area of the second impact plate is larger than that of the first impact plate. And the sections of the first impact plate and the second impact plate are trapezoidal structures. The impact-resistant plate has the advantages of being reasonable in structural design, ingenious in conception, convenient and fast to machine and manufacture, high in strength, capable of effectively preventing the impact-resistant plate from moving upwards and permeating steel, capable of enhancing the strength of an impact area of the tundish, safe and stable.

Description

Technical Field

[0001] The utility model relates to the technical field of the masonry structure of the tundish impact zone, in particular to an impact-resistant composite masonry structure for the tundish impact zone. Background Technique

[0002] During the normal pouring process in the tundish impact zone, it is rapidly baked from room temperature to 1000°C, and then eroded by high-temperature molten steel at about 1550°C for a long time. The masonry installation method of the impact plate determines that it will not float during use and can meet the requirements of continuous casting of multiple furnaces; at present, in the tundish impact area, a casting-molded or machine-pressed impact plate is generally installed on the upper part of the permanent layer by casting. The masonry method is to install it inlaid inside the permanent layer. Due to the long-term use of the impact plate, the impact plate is damaged, and it fails to be replaced in time or effective countermeasures are not taken, resulting in serious erosion in the impact zone, and the bottom of the impact zone turns red or leaks steel.

[0003] The publication number is: CN205732944U, and the name is: A magnesia-carbon brick impact-resistant plate prefabricated part for continuous casting tundish, which is composed of a refractory support and multiple magnesia-carbon bricks of equal or unequal sizes; the refractory support is a cuboid with a middle groove, and the middle groove is filled with assembled magnesia-carbon bricks. The upper surface of the magnesia-carbon brick is 5-10mm lower than the upper surface of the refractory support. A refractory material layer is provided on the upper surface of the magnesia-carbon brick, and a refractory material filling layer is provided between the magnesia-carbon brick and the refractory support. The utility model uses magnesia-carbon bricks (including waste bricks) to make the impact-resistant plate of the tundish, which not only improves the service life of the tundish impact zone, but also realizes the direct reuse of magnesia-carbon bricks, reduces the production cost, and achieves the purpose of making full use of resources.

[0004] The above-mentioned impact-resistant plate prefabricated part can improve the impact resistance of the impact zone, but the strength is not enough and it cannot resist the long-term erosion caused in the impact zone. Content of the Utility Model

[0005] The purpose of the utility model is to provide an impact-resistant composite masonry structure for the tundish impact zone with reasonable structural design, ingenious concept, convenient processing and manufacturing process, high strength of the impact-resistant plate, effectively preventing the upward movement and steel leakage of the impact-resistant plate, which can enhance the strength of the tundish impact zone and is safe and stable.

[0006] An impact-resistant composite masonry structure for the tundish impact zone of the utility model includes a second impact plate, a first impact plate is installed on the surface of the second impact plate, a permanent layer is fixedly arranged around the second impact plate, a permanent layer is fixedly arranged around the bottom of the first impact plate, and a dry material layer of the ladle wall is fixedly arranged in the middle and at the top of the first impact plate.

[0007] The bottom area of the second impact plate is larger than that of the first impact plate.

[0008] The first impact plate and the second impact plate are overlapped, which can effectively enhance the strength of the first impact plate and the second impact plate. At the same time, a permanent layer is fixedly arranged around the second impact plate, which can realize the fixation of the second impact plate, and the fixation is safe and stable. A permanent layer is fixedly arranged around the bottom of the first impact plate, which can fix the first impact plate, improve the fixation strength of the first impact plate and the second impact plate 4, and can effectively prevent the problem of upward movement of the first impact plate and the second impact plate. The first impact plate is fixed by using a wall-mounted dry material layer, and the fixation is more reliable, which is convenient to be turned off at one time when the tundish is turned over. The operation is safe and convenient, which can improve the safety of the operator's environment, further prevent the displacement of the first impact plate and the second impact plate, enhance the strength of the first impact plate and the second impact plate, and then increase the impact resistance of the impact area of the tundish, improving the service life of the tundish. The bottom area of the second impact plate is set to be larger than that of the first impact plate, which can effectively prevent the problem of steel leakage between the first impact plate and the second impact plate, enhance the sealing performance between the first impact plate and the second impact plate. At the same time, a triangular structure is formed between the first impact plate and the second impact plate, which can improve the stability between the first impact plate and the second impact plate, effectively prevent the problem of steel leakage, and also enhance the strength of the first impact plate and the second impact plate, greatly buffering the impact force of the molten steel on the impact area of the tundish, protecting the integrity of the tundish structure, and improving the service life of the tundish.

[0009] The cross-sections of the first impact plate and the second impact plate are trapezoidal structures.

[0010] Making the cross-sections of the first impact plate and the second impact plate be trapezoidal structures can increase the bottom areas of the first impact plate and the second impact plate. At the same time, it can also improve the stability of the first impact plate and the second impact plate, further enhance the strength of the first impact plate and the second impact plate, prevent the problem of steel leakage between the first impact plate and the second impact plate, with high strength and good impact resistance.

[0011] The beneficial effects of the present utility model are:

[0012] 1) Overlapping the first impact plate and the second impact plate can effectively enhance the strength of the first impact plate and the second impact plate. At the same time, a permanent layer is fixedly arranged around the second impact plate to fix the second impact plate, and the fixation is safe and stable. A permanent layer is fixedly arranged around the bottom of the first impact plate to fix the first impact plate, improve the fixing strength of the first impact plate and the second impact plate, and effectively prevent the problem of the upward movement of the first impact plate and the second impact plate. Using a wall-mounted dry material layer to fix the first impact plate makes the fixation more reliable, convenient for the tundish to be turned over at one time during tundish turnover, with safe and convenient operation, which can improve the safety of the operator's environment, further prevent the displacement of the first impact plate and the second impact plate, enhance the strength of the first impact plate and the second impact plate, and then increase the impact resistance of the impact area of the tundish and improve the service life of the tundish. Setting the bottom area of the second impact plate to be larger than that of the first impact plate can effectively prevent the problem of steel penetration between the first impact plate and the second impact plate, enhance the sealing performance between the first impact plate and the second impact plate. At the same time, a triangular structure is formed between the first impact plate and the second impact plate, which can improve the stability between the first impact plate and the second impact plate, effectively prevent the problem of steel penetration, enhance the strength of the first impact plate and the second impact plate, greatly buffer the impact force of molten steel on the impact area of the tundish, protect the integrity of the tundish structure, and improve the service life of the tundish.

[0013] 2) The cross-sections of the first impact plate and the second impact plate are trapezoidal structures, which can increase the bottom areas of the first impact plate and the second impact plate. At the same time, it can also improve the stability of the first impact plate and the second impact plate, further enhance the strength of the first impact plate and the second impact plate 4, prevent the problem of steel penetration between the first impact plate and the second impact plate, with high strength and good impact resistance.

[0014] 3) This impact-resistant composite masonry structure is reasonably designed, ingeniously conceived, and has a convenient processing and manufacturing process. The impact-resistant plate has high strength, effectively prevents the upward movement and steel penetration of the impact-resistant plate, can enhance the strength of the impact area of the tundish, is safe and stable, ensures the operation safety of the operator, improves the service life of the tundish, and has been put into use at present with good use effects and is worthy of wide promotion and application. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the first impact plate in the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the second impact plate in the present utility model.

[0018] In the figure: dry material layer on the ladle wall 1, permanent layer 2, first impact plate 3, second impact plate 4. Detailed implementation mode

[0019] Example 1.

[0020] The present utility model will be further described below in conjunction with the accompanying drawings.

[0021] The present utility model includes a dry material layer 1 on the ladle wall, a permanent layer 2, a first impact plate 3, and a second impact plate 4. The specific structure includes the second impact plate 4. The first impact plate 3 is installed on the surface of the second impact plate 4. The permanent layer 2 is fixedly arranged around the second impact plate 4. The permanent layer 2 is fixedly arranged around the bottom of the first impact plate 3. The dry material layer 1 on the ladle wall is fixedly arranged in the middle and at the top of the first impact plate 3.

[0022] The bottom area of the second impact plate 4 is larger than that of the first impact plate 3.

[0023] The first impact plate 3 and the second impact plate 4 are of rectangular structure.

[0024] The length of the first impact plate 3 is: 600 mm; the width is 400 mm; the length of the second impact plate 4 is: 800; the width is 600. The thickness of the first impact plate 3 and the second impact plate 4 is 80 mm. The length of the second impact plate 4 is 200 mm longer than that of the first impact plate 3. The material of the permanent layer 2 is: aluminous magnesia; the material of the dry material layer 1 on the ladle wall is: magnesia; the first impact plate 3 and the second impact plate 4 are made of high alumina and are formed by casting.

[0025] During use: The sizes of the first impact plate 3 and the second impact plate 4 are manufactured and processed according to requirements. After the produced first impact plate 3 and second impact plate 4 are inspected and qualified on site, they are installed. When installing the second impact plate 4, find the center position of the molten steel impact. The center position of the second impact plate 4 coincides with the center position of the molten steel impact. After fixing, the permanent layer 2 is integrally cast in one go when knotting; when installing the first impact plate 3, after the center position coincides with the center position of the second impact plate 4, the dry material layer 1 on the ladle wall is knotted and fixed to fix the entire impact-resistant composite masonry structure.

[0026] Example 2.

[0027] The present utility model includes a dry material layer 1 on the ladle wall, a permanent layer 2, a first impact plate 3, and a second impact plate 4. The specific structure includes the second impact plate 4. The first impact plate 3 is installed on the surface of the second impact plate 4. The permanent layer 2 is fixedly arranged around the second impact plate 4. The permanent layer 2 is fixedly arranged around the bottom of the first impact plate 3. The dry material layer 1 on the ladle wall is fixedly arranged in the middle and at the top of the first impact plate 3.

[0028] The bottom area of the second impact plate 4 is larger than that of the first impact plate 3.

[0029] The cross-sections of the first impact plate 3 and the second impact plate 4 are trapezoidal structures.

[0030] The surface length of the first impact plate 3 is: 450 mm; the bottom surface length is: 600 mm; the width is: 400 mm; this structure is described as a trapezoid; the surface length of the second impact plate 4 is: 650 mm; the bottom surface length is: 800 mm, and the width is: 600 mm; the thicknesses of the first impact plate 3 and the second impact plate 4 are 85 mm, and the length of the second impact plate 4 is 200 mm longer than that of the first impact plate 3; the material of the permanent layer 2 is: aluminous magnesia; the material of the wall dry mix layer 1 is: magnesia; the first impact plate 3 and the second impact plate 4 are made of aluminum silicon carbide, and the forming method is machine pressing.

[0031] During use: The sizes of the first impact plate 3 and the second impact plate 4 are manufactured and processed according to requirements. After the produced first impact plate 3 and second impact plate 4 are inspected and qualified on site, they are installed. When installing the second impact plate 4, find the center position of the molten steel impact. The center position of the second impact plate 4 coincides with the center position of the molten steel impact. After fixing, the permanent layer 2 is integrally cast in one go when knotting; when installing the first impact plate 3, after the center position coincides with the center position of the second impact plate 4, the wall dry mix layer 1 is used for knotting and fixing to fix the entire impact-resistant composite masonry structure.

[0032] Making the cross-sections of the first impact plate 3 and the second impact plate 4 trapezoidal structures can increase the bottom areas of the first impact plate 3 and the second impact plate 4. At the same time, it can also improve the stability of the first impact plate 3 and the second impact plate 4, further enhance the strength of the first impact plate 3 and the second impact plate 4, prevent the problem of steel penetration in the first impact plate 3 and the second impact plate 4, with high strength and good impact resistance.

Claims

1. A composite refractory lining structure for impact zone of tundish, characterized in that: It includes a second impact plate (4), on the surface of the second impact plate (4), a first impact plate (3) is mounted, around the second impact plate (4), a permanent layer (2) is fixedly arranged, around the bottom of the first impact plate (3), a permanent layer (2) is fixedly arranged, and in the middle and at the top of the first impact plate (3), a wall-coated dry material layer (1) is fixedly arranged.

2. The impact-resistant composite lining structure for the tundish impact zone according to claim 1, characterized in that: The bottom area of the second impact plate (4) is larger than the bottom area of the first impact plate (3).

3. The impact-resistant composite masonry structure in the tundish impact zone according to claim 1, characterized in that: The cross sections of the first impact plate (3) and the second impact plate (4) are trapezoidal structures.

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