Square billet tundish

Abstract

The utility model discloses a square billet tundish, and belongs to the field of molten steel casting. According to the technical scheme, the square billet tundish comprises a tundish body, a water feeding opening is formed in the bottom face of the tundish body, a sliding rail is arranged on the bottom face of the tundish body, the sliding rail passes through the position of the water feeding opening, a plumb bob assembly is installed in the sliding rail and comprises a hanging cable, and a heavy block is arranged at the lower end of the hanging cable. According to the tundish, the plumb bob assembly is arranged at the water gap position, when the water gap is positioned, the plumb bob assembly is moved to the position below the upper water gap, the hanging cable and the heavy block are placed into the lower water gap, water gap centering is judged according to the positions of the heavy block and the hanging cable in the lower water gap, operation is more convenient and visual, the centering effect is good, and safety is higher.

Description

Technical Field

[0001] This utility model relates to the field of steel casting, and in particular to a billet tundish. Background Technology

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives molten steel poured from the ladle, and then distributes it to various crystallizers via the tundish nozzle, playing a crucial role. It also allows for adjustment of the molten steel's chemical composition during the pouring process. To improve production safety and product quality, it is essential to ensure that the tundish's inlet is vertically aligned with the center of the billet crystallizer opening.

[0003] Before each pouring operation from the tundish, personnel need to visually align the sprue with the mold's sprue. Figure 1 As shown, multiple sprues are arranged in a straight line at the bottom of the tundish. Therefore, by simply aligning the two ends or any two sprues, it can be ensured that all sprues are aligned.

[0004] The centering process takes more than 5 minutes, and because the operator visually aligns the centering, there will be errors in accuracy. This may lead to steel flow deviation and poor alignment of the submerged entry nozzle during casting, which may cause steel leakage. During production, misalignment of the submerged entry nozzle may cause defects such as billet delamination and internal cracks, which have a significant impact on the quality of the billet. At the same time, the centering process requires personnel to go to the bottom of the tundish for verification, which poses a significant safety hazard. Summary of the Invention

[0005] This invention addresses the problems of manual nozzle alignment in current tundish casting, which involves long operation time, low alignment accuracy, and low safety. It provides a billet tundish that facilitates nozzle alignment.

[0006] To address the aforementioned problems, the present invention provides a billet tundish comprising a tundish body with multiple water inlets on its bottom surface. A slide rail is positioned corresponding to at least two water inlets on the bottom surface of the tundish body. A plumb bob assembly is installed within the slide rail, and the plumb bob assembly includes a hanging cable with a weight at its lower end. This design features a plumb bob assembly at the water inlet position. During water inlet positioning, the plumb bob assembly is moved below the water inlets, and the hanging cable and weight are placed into the water outlet. The position of the weight and hanging cable in the water outlet determines the water inlet alignment, making the operation more convenient and intuitive, improving alignment accuracy, and enhancing safety.

[0007] As a preferred implementation of a billet intermediate ladle, the plumb bob assembly further includes a slide plate, which is slidably mounted in the slide rail, and the upper end of the hanging cable is connected to the slide plate.

[0008] As a preferred embodiment of the billet tundish, the slide plate has a connecting plate on its side, the connecting plate being perpendicular to the slide plate. A stud is provided on the side of the connecting plate, and the upper end of the hanging cable is hung on the stud. A nut is also installed on the stud, and the hanging cable is located between the connecting plate and the nut. The hanging cable adopts a detachable mounting method, making disassembly, assembly, and position adjustment convenient.

[0009] As a preferred embodiment of the billet intermediate ladle, the hanging cable is a chain. The chain itself is relatively heavy, and each link can move freely, resulting in a high degree of verticality when hanging down.

[0010] As a preferred implementation of the billet intermediate ladle, the lower part of the weight block has a conical structure. The bottom of the weight block is pointed, which makes the pointing and positioning more accurate.

[0011] As a preferred implementation of a billet tundish, the inlet protrudes from the bottom surface of the tundish body, and when the connecting plate is abutting against the side of the inlet, the hanging cable is located below the inlet. The plumb bob assembly is automatically positioned by abutting against the outlet, making operation convenient and highly accurate.

[0012] As a preferred implementation of the billet intermediate ladle, the connecting plate is provided with a drag handle on the other side for easy dragging by the user.

[0013] As can be seen from the above technical solutions, the advantages of this utility model are as follows: First, by setting a plumb bob assembly at the ladle nozzle position, operators can intuitively judge the nozzle alignment by observing the position of the hanging cable and the weight, simplifying the operation process and improving work efficiency. Second, it significantly improves the nozzle alignment effect. The design of the plumb bob assembly makes the alignment more precise, ensuring smooth flow of molten steel during pouring and reducing operational errors. In addition, this design enhances operational safety. Precise alignment reduces the risk of molten steel splashing, ensuring the safety of operators. At the same time, the detachable design of the hanging cable facilitates adjustment to meet the needs of different working conditions. The use of a chain as a hanging cable improves verticality and ensures the stability of the drooping state. The conical structure at the bottom of the weight achieves precise positioning, improving the accuracy of nozzle alignment. The protruding design of the upper nozzle and the abutment method of the connecting plate achieve automatic positioning, which is convenient to operate and has high positioning accuracy. Finally, the drag handle design on the connecting plate makes it easy for operators to drag the plumb bob assembly, reducing physical labor and improving operational convenience. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the intermediate package structure.

[0016] Figure 2 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0017] Figure 3 This is a schematic diagram of the plumb bob assembly in a specific embodiment of this utility model.

[0018] Explanation of main figure symbols

[0019] 1. Package body, 2. Slide rail, 3. Hanging cable, 4. Weight, 5. Slide plate, 6. Connecting plate, 7. Stud, 8. Inlet, 9. Drag handle. Detailed Implementation

[0020] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] like Figure 1 , 2 As shown in Figure 3, a billet intermediate ladle includes a ladle body 1. The bottom surface of the ladle body 1 has multiple water inlets 8, which protrude from the bottom surface of the ladle body 1. A slide rail 2 is provided on the bottom surface of the ladle body corresponding to at least two water inlets 8. The slide rail 2 passes through the corresponding water inlets 8, and a plumb bob assembly is installed in the slide rail 2.

[0022] The plumb bob assembly includes a slide plate 5 that cooperates with the slide rail 2. The slide plate 5 is slidably installed in the slide rail 2. A connecting plate 6 is provided on the side of the slide plate 5. The connecting plate 6 is perpendicular to the slide plate 5. A stud 7 is provided on the side of the connecting plate 6. A hanging cable 3 is hung on the stud 7. The hanging cable 3 is preferably a chain structure. A nut is also installed on the stud 7. The hanging cable 3 is located between the connecting plate 6 and the nut. When the connecting plate 6 is close to the side of the water inlet, the hanging cable 3 is located below the water inlet. A weight 4 is provided at the lower end of the hanging cable 3. The lower part of the weight 4 is a conical structure. A drag handle 9 is also provided on the other side of the connecting plate 6.

[0023] When using this invention, i.e. when the tundish is casting into the billet mold, first move the tundish to a position where the upper and lower sprues are basically opposite each other. Then, move the plumb bob assembly below the upper sprue by dragging the handle 9. Place the hanging cable 3 and the weight into the lower sprue. After the hanging cable 3 is kept vertical and stable under the action of gravity, observe the position of the hanging cable 3 in the lower sprue and the position pointed to by the weight 4 to determine whether the upper and lower sprues are aligned. Through the above process, the positions of the two sets of upper and lower sprues can be adjusted adaptively to ensure that all upper and lower sprues are aligned. After alignment is completed, the plumb bob assembly can be removed.

[0024] As can be seen from the above embodiments, the beneficial effects of this utility model are as follows: Firstly, by setting a plumb bob assembly at the ladle nozzle position, operators can intuitively judge the nozzle alignment by observing the position of the hanging cable and the weight, simplifying the operation process and improving work efficiency. Secondly, it significantly improves the nozzle alignment effect. The design of the plumb bob assembly makes the alignment more precise, ensuring smooth flow of molten steel during pouring and reducing operational errors. In addition, this design enhances operational safety. Precise alignment reduces the risk of molten steel splashing, ensuring the safety of operators. At the same time, the detachable design of the hanging cable facilitates adjustment to meet the needs of different working conditions. The use of a chain as a hanging cable improves verticality and ensures the stability of the drooping state. The conical structure at the bottom of the weight achieves precise positioning, improving the accuracy of nozzle alignment. The protruding design of the upper nozzle and the abutment method of the connecting plate achieve automatic positioning, which is convenient to operate and has high positioning accuracy. Finally, the drag handle design on the connecting plate makes it easy for operators to drag the plumb bob assembly, reducing physical labor and improving operational convenience.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A billet intermediate ladle, comprising a ladle body (1), wherein the bottom surface of the ladle body (1) is provided with a plurality of water inlets (8), characterized in that, The bottom surface of the package (1) is provided with a slide rail (2) corresponding to at least two water inlets (8). The slide rail (2) passes through the corresponding water inlet positions. A plumb bob assembly is installed in the slide rail (2). The plumb bob assembly includes a hanging cable (3). A weight (4) is provided at the lower end of the hanging cable (3).

2. The billet intermediate ladle according to claim 1, characterized in that, The plumb bob assembly also includes a slide plate (5), which is slidably mounted in the slide rail (2), and the upper end of the hanging cable (3) is connected to the slide plate (5).

3. The billet intermediate ladle according to claim 2, characterized in that, The side of the slide plate (5) is provided with a connecting plate (6), the connecting plate (6) is perpendicular to the slide plate (5), the side of the connecting plate (6) is provided with a stud (7), the upper end of the hanging cable (3) is hung on the stud (7), a nut is also installed on the stud (7), and the hanging cable (3) is located between the connecting plate (6) and the nut.

4. The billet intermediate ladle according to claim 3, characterized in that, The hanging cable (3) is a chain.

5. The billet intermediate ladle according to claim 1, characterized in that, The lower part of the weight (4) is a conical structure.

6. The billet intermediate ladle according to claim 3, characterized in that, The water inlet protrudes from the bottom surface of the package (1), and when the connecting plate (6) is in contact with the side of the water inlet, the hanging cable (3) is located below the water inlet.

7. The billet intermediate ladle according to claim 3, characterized in that, A drag handle (9) is provided on the other side of the connecting plate (6).

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