Construction structure of anti-floating tundish embedded guard plate

Abstract

The utility model discloses a construction structure of an anti-floating tundish embedded guard plate, which relates to the technical field of tundish refractory materials, and comprises a steel shell, a tundish edge is arranged at the top end of the steel shell, a thermal insulation layer is arranged on the side wall of the steel shell, the top of the thermal insulation layer is flush with the tundish edge, a permanent layer is built on the inner side of the thermal insulation layer, and the permanent layer is arranged on the outer side of the steel shell. The permanent layer extends downwards to the bottom of the steel shell along the heat preservation layer, a working layer is built on the inner side of the permanent layer, a protection plate is arranged in the inner side direction of the top of the working layer, the top of the protection plate is flush with the permanent layer and the working layer, coating materials are arranged on the top of the permanent layer, the top of the working layer and the top of the protection plate, and the coating materials are in a slope shape. According to the tundish protection plate, the design is reasonable, the construction is simple, the floating of the protection plate is avoided, the use is safer and more stable, and the service life of the tundish is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of tundish refractory materials, and particularly relates to a construction structure of an anti-floating tundish inner lining guard plate. Background Art

[0002] The working layer of the tundish is usually constructed with magnesium dry material. The thickness of the dry material in the working layers around the tundish is usually the same. When a serious part of the working layer of the tundish suffers from severe erosion, scientific and technological workers usually insert protective plates in the severely corroded part of the tundish. The protective plates are usually produced with high-aluminum and aluminum-magnesium castables with good corrosion resistance. They can significantly improve the local corrosion resistance of the dry material in the tundish, and have relatively little impact on costs. It is one of the main measures currently used in construction.

[0003] As the cost pressure on enterprises becomes greater and greater, refractory enterprises have reduced the cost of the guard plates by reducing the thickness and height of the guard plates in the tundish and reducing the materials used for the guard plates. However, the disadvantage is that the guard plates are prone to floating during the use of the tundish, causing the tundish to be offline early, resulting in great losses and affecting the image and reputation of the refractory enterprises. Therefore, it is very necessary to provide a construction structure for the anti-floating guard plates in the tundish, which has a reasonable design, simple construction, safe and stable use, and can prevent the guard plates from floating. Summary of the invention

[0004] The utility model aims to overcome the shortcomings of the prior art and to provide a construction structure of an anti-floating tundish inner guard plate which has reasonable design, simple construction, safe and stable use and can prevent the guard plate from floating.

[0005] The purpose of the utility model is achieved as follows: a construction structure of an anti-floating intermediate ladle with an inner guard plate, which comprises a steel shell, a brim being arranged on the top of the steel shell, an insulation layer being arranged on the side wall of the steel shell, the top of the insulation layer being flush with the brim, a permanent layer being built on the inner side of the insulation layer, the permanent layer extending downward from the insulation layer to the bottom of the steel shell, a working layer being built on the inner side of the permanent layer, a guard plate being arranged on the inner side of the top of the working layer, the top of the guard plate being flush with the permanent layer and the working layer, a coating material being arranged on the permanent layer, the working layer and the top of the guard plate, the coating material being sloped, the higher end being flush with the brim, and an elastic pressure plate being arranged in the coating material.

[0006] Preferably, the height of the guard plate is 45% to 55% of the height of the working layer, covering the liquid level fluctuation range, and the thickness of the guard plate is 40% to 60% of the thickness of the working layer.

[0007] Preferably, the lower portion of the guard plate is in an oblique "V" shape, with the tip being placed in the working layer.

[0008] Preferably, the working layer and the guard plate are fixedly connected.

[0009] Preferably, the ratio of the thickness of the permanent layer at the bottom of the steel shell to the thickness of the permanent layer on the side wall of the steel shell is 5:4.

[0010] Preferably, the elastic pressure plate is a high-temperature resistant and highly elastic steel plate, the cross section is sawtooth-shaped, the peak value gradually decreases, and the elastic pressure plate is flush with the edge of the package near the outer side.

[0011] Preferably, the elastic pressure plate is placed in the middle of a single guard plate or at the joint of two guard plates.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model adopts a lower oblique "V"-shaped design for the guard plate, and the tip of the lower part is placed in the working layer, which increases the contact area and bonding strength between the lower part of the guard plate and the working layer, and prevents the lower part of the guard plate from loosening during use. At the same time, a coating material is arranged on the upper part of the guard plate, and an elastic pressure plate made of a high-temperature resistant and highly elastic steel plate is placed in the coating material. In this way, after the cover is closed, under the joint action of the coating material and the elastic pressure plate, the upper part of the guard plate can be fixed, and it will not loosen during high-temperature use. The pressure of the elastic pressure plate on the guard plate is moderate, and the guard plate is prevented from falling off due to excessive pressure. By optimizing the shape and construction structure of the upper and lower parts of the guard plate, it can be prevented from loosening or floating due to the joint action of buoyancy and molten iron scouring, thereby ensuring the safety and stability of the use of the tundish and further improving the service life of the tundish.

[0014] In general, the utility model has reasonable design and simple construction, avoids floating of the guard plate, is safer and more stable to use, and increases the service life of the tundish. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a construction structure of an anti-floating tundish inner guard plate.

[0016] Figure 2 The utility model is a construction structure of an anti-floating tundish inner guard plate Figure 1 A partial enlarged view of point A in the middle.

[0017] Figure 3 The utility model is an axonometric schematic diagram of a single guard plate of a construction structure of an anti-floating tundish inner guard plate.

[0018] Figure 4 The utility model is an axonometric schematic diagram of the construction structure of the inner guard plate of the anti-floating tundish and the splicing of the guard plates.

[0019] In the figure: 1. Steel shell 2. Permanent layer 3. Working layer 4. Protective plate 5. Insulation layer 6. Coating 7. Elastic pressure plate 8. Package edge 9. Liquid level line. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0021] like Figure 1-4 As shown, a construction structure of a protective plate inlaid in an anti-floating intermediate ladle comprises a steel shell 1, a brim 8 is arranged on the top of the steel shell 1, an insulation layer 5 is arranged on the side wall of the steel shell 1, the top of the insulation layer 5 is flush with the brim 8, a permanent layer 2 is built on the inner side of the insulation layer 5, the permanent layer 2 extends downward from the insulation layer 5 to the bottom of the steel shell 1, a working layer 3 is built on the inner side of the permanent layer 2, a protective plate 4 is arranged on the inner side of the top of the working layer 3, the top of the protective plate 4 is flush with the permanent layer 2 and the working layer 3, a coating material 6 is arranged on the top of the permanent layer 2, the working layer 3 and the protective plate 4, the coating material 6 is sloped, and the higher end is flush with the brim 8, and an elastic pressure plate 7 is arranged in the coating material 6.

[0022] The height of the guard plate 4 is 45% to 55% of the height of the working layer 3 , covering the fluctuation range of the liquid level line 9 , and the thickness of the guard plate 4 is 40% to 60% of the thickness of the working layer 3 .

[0023] The height and thickness of the guard plate 4 are the optimal values ​​of the design. If the guard plate 4 is too thin or too short, it will not have the anti-corrosion effect. If the guard plate 4 is too thick, the anti-floating effect will be poor. If the guard plate 4 is too long, the production cost will also increase. The design of the guard plate 4 covering the fluctuation range of the liquid level line 9 can better exert the anti-corrosion effect of the guard plate 4 and increase the service life of the ladle.

[0024] Among them, the lower part of the guard plate 4 is in an oblique "V" shape, and the tip is placed in the working layer 3, which increases the contact area and bonding strength between the lower part of the guard plate 4 and the working layer 3, and prevents the lower part of the guard plate 4 from loosening during use. A fixed connection method is adopted between the working layer 3 and the guard plate 4, which further prevents the guard plate 4 from loosening during use.

[0025] Among them, the ratio of the thickness of the permanent layer 2 at the bottom of the steel shell 1 to the thickness of the permanent layer 2 on the side wall of the steel shell 1 is 5:4, which can further improve the corrosion resistance of the tundish and increase its service life.

[0026] Among them, the elastic pressure plate 7 is a high-temperature resistant and highly elastic steel plate with a sawtooth cross-section and a gradually decreasing peak value. The elastic pressure plate 7 is flush with the edge 8 near the outside and is placed in the middle of a single guard plate 4 or at the joint of two guard plates 4.

[0027] The elastic pressure plate 7 is made of high-temperature resistant and highly elastic steel plate, which will not loosen during high-temperature use. The cross-section of the elastic pressure plate 7 is sawtooth-shaped, and the peak value gradually decreases, which can ensure that the pressure of the elastic pressure plate 7 on the guard plate 4 is moderate, and avoid the guard plate 4 falling off due to excessive pressure, further improving the stability and safety of the use of the guard plate 4, and improving the service life of the intermediate package. The elastic pressure plate 7 is placed in the middle of a single guard plate 4 or at the joint of two guard plates 4. This arrangement guarantees the working performance of the elastic pressure plate 7 to the greatest extent and can better protect the guard plate 4.

[0028] The working principle of the utility model is as follows:

[0029] When the utility model is in use, for the tundish with different liquid surface line 9 heights, a guard plate 4 of corresponding length and thickness is designed to ensure that the guard plate 4 covers the fluctuation range of the liquid surface line 9, and then the guard plate 4 and the working layer 3 are fixedly connected, the tip of the lower part is placed in the working layer 3, the guard plate 4 is fixed, an elastic pressure plate 7 and a coating material 6 are arranged on the top of the guard plate 4, and finally the cover is put on. Under the joint action of the coating material 6 and the elastic pressure plate 7, the upper part of the guard plate 4 can be fixed and will not loosen during high-temperature use. The elastic pressure plate 7 exerts moderate pressure on the guard plate 4 to avoid the guard plate 4 falling off due to excessive pressure. By optimizing the shape and construction structure of the upper and lower parts of the guard plate 4, it is possible to avoid the guard plate 4 from loosening or floating due to the joint action of buoyancy and molten iron flushing, thereby ensuring the safety and stability of the use of the tundish and further improving the service life of the tundish.

[0030] In general, the utility model has reasonable design and simple construction, avoids floating of the guard plate 4, is safer and more stable to use, and increases the service life of the tundish.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A construction structure of an anti-floating tundish with an inner protective plate, comprising a steel shell, characterized in that: The top of the steel shell is provided with a flange, the side wall of the steel shell is provided with an insulation layer, the top of the insulation layer is flush with the flange, a permanent layer is built on the inner side of the insulation layer, the permanent layer extends downward along the insulation layer to the bottom of the steel shell, a working layer is built on the inner side of the permanent layer, a guard plate is provided on the inner side of the top of the working layer, the top of the guard plate is flush with the permanent layer and the working layer, a coating is provided on the permanent layer, the working layer and the top of the guard plate, the coating is sloped, and the higher end is flush with the flange, and an elastic pressure plate is provided in the coating.

2. The construction structure of the inner protective plate of the anti-floating tundish according to claim 1 is characterized by: The height of the guard plate is 45% to 55% of the height of the working layer, covering the liquid level fluctuation range, and the thickness of the guard plate is 40% to 60% of the thickness of the working layer.

3. The construction structure of the inner protective plate of the anti-floating tundish according to claim 2 is characterized by: The lower part of the guard plate is in an oblique "V" shape, and the tip is placed in the working layer.

4. The construction structure of the inner protective plate of the anti-floating tundish according to claim 3 is characterized by: The working layer and the guard plate are fixedly connected.

5. The construction structure of the inner protective plate of the anti-floating tundish according to claim 1 is characterized by: The ratio of the thickness of the permanent layer at the bottom of the steel shell to the thickness of the permanent layer on the side wall of the steel shell is 5:

4.

6. The construction structure of the inner protective plate of the anti-floating tundish according to claim 1 is characterized by: The elastic pressing plate is a high-temperature resistant and highly elastic steel plate, with a sawtooth-shaped cross section and a gradually decreasing peak value. The elastic pressing plate is flush with the edge of the package near the outer side.

7. The construction structure of the inner protective plate of the anti-floating tundish according to claim 6 is characterized by: The elastic pressing plate is arranged at the middle of a single guard plate or at the joint of two guard plates.

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