More durable tundish refractory masonry structure

Abstract

The utility model discloses a tundish refractory masonry structure which is more durable. The tundish refractory masonry structure comprises laminates and short steel bars. One side of the short steel bar is arranged on the surface of the laminate, the other side of the short steel bar is provided with a plurality of groups of vertical steel plates, and the inner sides of the plurality of groups of vertical steel plates are provided with transverse steel bars; according to the utility model, larger supporting force is provided both in the longitudinal direction and the transverse direction, so that the refractory material and the permanent layer are connected more tightly and are not easy to fall off, the stability of the tundish refractory material is greatly improved, the refractory material is firmer and more durable, and the inclined steel bars play a role in point-to-point supporting, so that the whole frame is more stable and durable, and the service life of the tundish refractory material is prolonged. The steel bar structure is not deformed in the pouring process; the tundish masonry structure is planned and fixed to form a net structure, so that the refractory material is stressed more uniformly and stably in all directions during masonry, the refractory material can be better combined with the refractory material in each steel bar grid, and falling of the refractory material in the using process is reduced or even avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous casting ladles, in particular to a more durable tundish refractory masonry structure. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle and then distributes it to each crystallizer. The tundish is the middle link in the steelmaking production process and the connection point from intermittent operation to continuous operation. As a metallurgical reactor, the tundish is an important link in improving steel production and quality. Whether it is for the smooth progress of continuous casting operations or for ensuring the quality of molten steel, the role of the tundish cannot be ignored. The main functions of the tundish are as follows:

[0003] (1) Diversion effect: For multi-strand continuous casting machines, the tundish with multiple nozzles diverts the molten steel;

[0004] (2) Continuous pouring: when multiple furnaces are poured continuously, the molten steel stored in the tundish plays a connecting role when the ladle is changed;

[0005] (3) Decompression effect. The liquid level in the ladle is 5-6m, which has a great impact and varies greatly during the casting process. The liquid level in the tundish is lower than that in the ladle and varies less. It can be used to stabilize the steel casting process and reduce the erosion of the steel flow on the solidified shell of the crystallizer.

[0006] (4) Protective effect: through the covering agent on the liquid surface of the tundish, the long nozzle and other protective devices, the contamination of the molten steel in the tundish by the outside world is reduced;

[0007] (5) The function of removing impurities: the tundish is the last refractory container that the molten steel passes through before solidification, which has an important impact on the quality of the steel. The particles of non-metallic impurities in the steel should be removed as much as possible while it is in a liquid state.

[0008] It can be seen that the tundish is the key thermal equipment in the continuous steel casting system, and it is also the main part of the continuous steel casting system that consumes refractory materials. Doing a good job in the research of refractory materials for the tundish is the key link to improve the continuous casting ratio. The refractory materials for the tundish can be divided into three categories based on their functions:

[0009] The first category is lining materials, which are mainly composed of insulation layer, permanent layer and working layer;

[0010] The second category is flow stabilizing components, including slag dams, retaining walls, ceramic filters, flow stabilizers, etc.

[0011] The third category is the flow control system, which includes stoppers, sliding nozzles, sizing nozzles, and submerged nozzles. Among these, the key functional refractory materials used in continuous casting, such as submerged nozzles, long nozzles, integral stoppers, sizing nozzles, and sliding nozzles, are the primary factor limiting the lifespan of continuous casting systems. Long nozzles and submerged nozzles are used to transport molten steel from the ladle to the tundish and vice versa, ensuring that the steel does not undergo secondary oxidation and preventing slag from entering the mold. Integral stoppers offer excellent sealing properties, and automated stopper-controlled steel flow technology has led to rapid development of sliding nozzles and integral stopper-controlled tundish steel flow technology.

[0012] To save costs, the ideal state for tundish refractory material usage is for the three different functional types of material to deteriorate synchronously. Similarly, to maximize the lifespan of the tundish, efforts should be made to extend the lifespan of each functional refractory material. Furthermore, tundishes currently experience refractory material shedding over time. This shedding easily becomes entangled in the molten steel, forming inclusions and affecting the surface quality of the billet. To address this issue, we have developed a more durable tundish refractory masonry structure. Utility Model Content

[0013] The purpose of the utility model is to provide a more durable tundish refractory masonry structure to solve the problems raised in the above-mentioned background technology.

[0014] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a more durable tundish refractory masonry structure, comprising: a layer plate and short steel bars;

[0015] One side of the short steel bar is arranged on the surface of the layer plate, and the short steel bar and the layer plate are welded. A vertical steel plate is arranged on the other side of the short steel bar, and the vertical steel plates are arranged in multiple groups. Horizontal steel bars are arranged on the inner side of the multiple groups of vertical steel plates, and the horizontal steel bars and the vertical steel plates are welded. Diagonal steel bars are arranged between the multiple groups of vertical steel plates. A fixing mechanism is arranged inside the vertical steel plate, and the movable plate and the connecting rod are driven to move by the screw of the fixing mechanism, so that the connecting rod fixes the diagonal steel bar.

[0016] Preferably, the fixing mechanism includes a positioning cavity opened inside the vertical steel plate, the positioning cavity and the vertical steel plate are integrally formed, a plug-in block is provided on one side of the bottom of the oblique steel bar, the plug-in block and the oblique steel bar are welded, and the plug-in block is plugged into the inside of the vertical steel plate, and the movable plate is slidably connected to the inside of the positioning cavity. The setting of the positioning cavity can limit the movement of the movable plate, so that the movable plate is always in a horizontal state and is easy to use. The screw is connected to one side of the movable plate, and the plug-in rod is connected to the other side of the movable plate. The plug-in rod and the movable plate are welded, and the plug-in rod passes through the plug-in block.

[0017] Preferably, one side of the screw rod passes through the vertical steel plate and is connected to a turntable, and the turntable and the screw rod are welded.

[0018] Preferably, the vertical steel plates and the horizontal steel bars are provided with horizontal and vertical mesh grooves.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the short steel bars of the present invention are composed of two Y-shaped steel bars welded into the interior of the layer plate, and the two short steel bars can form a plane in the vertical direction to provide better support. The horizontal steel bars and the vertical steel plates in the horizontal and vertical directions are connected to the short steel bars welded into the layer plate to form a horizontal and vertical mesh groove. The two oblique steel bars are obliquely connected to the surface of the vertical steel plate, and their connection points are the same as the vertical steel plates, horizontal steel bars and short steel bars, forming the basic structure of the refractory material, providing greater support force both in the longitudinal and transverse directions, making the connection between the refractory material and the permanent layer tighter and less likely to fall off, greatly improving the stability of the middle-wrapped refractory material, making the refractory material more solid and durable, and the oblique steel bars play a point support role, making the overall frame more stable and durable, keeping the steel structure from deformation during the pouring process, evenly distributing the pressure, and making the force more uniform;

[0020] By planning and fixing the middle-wrapped masonry structure to form a mesh structure, the refractory material can be more evenly and stably stressed in all directions during masonry, and can be better combined with the refractory material in each steel bar grid, reducing or even preventing the refractory material from falling off during use;

[0021] The turntable drives the screw to rotate, and the screw drives the movable plate to move inside the positioning cavity. The movable plate drives the plug-in rod to penetrate the plug-in block, thereby fixing the plug-in block and the oblique steel bars, making it easier for the oblique steel bars to be fixed on the surface of the vertical steel plate, completing the fixation and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model when the layer plate and the short steel bar are connected;

[0024] Figure 3 This is a schematic structural diagram of the side section of the vertical steel plate of the utility model.

[0025] In the figure: 1. Short steel bars; 2. Vertical steel plates; 3. Horizontal steel bars; 4. Diagonal steel bars; 5. Horizontal and vertical mesh grooves; 6. Connecting blocks; 7. Layer plates; 9. Connecting rods; 10. Positioning chambers; 11. Turntables; 12. Moving plates; 13. Screw rods. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-3 The utility model provides a technical solution: a more durable intermediate ladle refractory masonry structure, comprising: a layer plate 7 and a short steel bar 1, one side of the short steel bar 1 is arranged on the surface of the layer plate 7, and the other side of the short steel bar 1 is provided with a vertical steel plate 2, the vertical steel plates 2 are arranged in multiple groups, and the inner sides of the multiple groups of vertical steel plates 2 are provided with horizontal steel bars 3, and the multiple groups of vertical steel plates 2 are provided with oblique steel bars 4. A fixing mechanism is provided inside the vertical steel plate 2, and the movable plate 12 and the plug-in rod 9 are driven to move by the screw 13 of the fixing mechanism, so that the plug-in rod 9 fixes the oblique steel bars 4.

[0028] The fixing mechanism includes a positioning cavity 10 opened inside the vertical steel plate 2, and a plug-in block 6 is provided on one side of the bottom of the oblique steel bar 4. The plug-in block 6 and the oblique steel bar 4 are welded, and the plug-in block 6 is plugged into the inside of the vertical steel plate 2. The movable plate 12 is slidably connected to the inside of the positioning cavity 10. The setting of the positioning cavity 10 can limit the movement of the movable plate 12, so that the movable plate 12 is always in a horizontal state for easy use. The screw 13 is connected to one side of the movable plate 12, and the plug-in rod 9 is connected to the other side of the movable plate 12. The plug-in rod 9 and the movable plate 12 are welded, and the plug-in rod 9 passes through the plug-in block 6.

[0029] One side of the screw rod 13 passes through the vertical steel plate 2 and is connected to the turntable 11 , and the turntable 11 and the screw rod 13 are welded.

[0030] The vertical steel plates 2 and the horizontal steel bars 3 are provided with horizontal and vertical mesh grooves 5.

[0031] Specifically, when in use, the short steel bars 1 are welded into the interior of the layer plate 7 in a Y shape. The two short steel bars 1 can form a plane in the vertical direction to provide better support. The horizontal steel bars 3 and the vertical steel plates 2 in the horizontal and vertical directions are connected to the short steel bars 1 welded into the layer plate 7 to form a horizontal and vertical mesh groove 5 (i.e., a grid shape). The two oblique steel bars 4 are obliquely connected to the surface of the vertical steel plate 2. The connection point thereof is the same as that of the vertical steel plate 2, the horizontal steel bar 3 and the short steel bar 1, forming the basic structure of the refractory material, providing greater support force both in the longitudinal and transverse directions, making the connection between the refractory material and the permanent layer tighter and less likely to fall off, greatly improving the stability of the middle-wrapped refractory material, making the refractory material more solid and durable, and the oblique steel bars 4 play a point support role, making the overall frame more stable and durable, keeping the steel structure from deformation during the pouring process, evenly distributing the pressure, and making the force more uniform;

[0032] By planning and fixing the middle-wrapped masonry structure to form a mesh structure, the refractory material can be more evenly and stably stressed in all directions during masonry, and can be better combined with the refractory material in each steel bar grid, reducing or even preventing the refractory material from falling off during use;

[0033] Turn the turntable 11 to drive the screw 13 to rotate. Since the screw 13 is threadedly connected to the vertical steel plate 2, the screw 13 can drive the movable plate 12 to move inside the positioning cavity 10. After the movable plate 12 moves, the movable plate 12 will drive the plug-in rod 9 to pass through the plug-in block 6, thereby fixing the plug-in block 6 and the oblique steel bar 4, so as to facilitate the oblique steel bar 4 to be fixed on the surface of the vertical steel plate 2, completing the fixation, and making it more convenient to use.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A more durable tundish refractory masonry structure, comprising: The layer plate (7) and the short steel bar (1) are characterized in that one side of the short steel bar (1) is arranged on the surface of the layer plate (7), and the other side of the short steel bar (1) is provided with a vertical steel plate (2), the vertical steel plates (2) are provided in multiple groups, the inner sides of the multiple groups of the vertical steel plates (2) are provided with horizontal steel bars (3), and the multiple groups of the vertical steel plates (2) are provided with oblique steel bars (4), and a fixing mechanism is provided inside the vertical steel plates (2), and the screw (13) of the fixing mechanism drives the movable plate (12) and the plug rod (9) to move, so that the plug rod (9) fixes the oblique steel bars (4).

2. A more durable tundish refractory masonry structure according to claim 1, characterized in that: The fixing mechanism includes a positioning cavity (10) opened inside the vertical steel plate (2), a plug-in block (6) is provided on one side of the bottom of the oblique steel bar (4), and the plug-in block (6) is plugged into the inside of the vertical steel plate (2), the movable plate (12) is slidably connected to the inside of the positioning cavity (10), the screw (13) is connected to one side of the movable plate (12), the plug-in rod (9) is connected to the other side of the movable plate (12), and the plug-in rod (9) passes through the plug-in block (6).

3. A more durable tundish refractory masonry structure according to claim 2, characterized in that: One side of the screw rod (13) passes through the vertical steel plate (2) and is connected to the rotary disk (11).

4. A more durable tundish refractory masonry structure according to claim 1, characterized in that: The vertical steel plates (2) and the horizontal steel bars (3) are provided with horizontal and vertical mesh grooves (5).

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