Centering jig for continuous casting tundish and crystallizer

Abstract

The centering jig for the continuous casting tundish and the crystallizer comprises an upper marker post and two lower marker posts, the upper marker post is vertically arranged and fixedly installed on the tundish, and the horizontal distance between the upper marker post and the center line of a water gap of the tundish is D1; the two lower marker posts are vertically arranged and fixedly installed on the crystallizer, the two lower marker posts are horizontally arranged and distributed in a spaced mode in the direction perpendicular to the transverse moving direction of the tundish, and the horizontal distance between the lower marker posts and the center line of the crystallizer is D2; and the relationship between D1 and D2 satisfies D1 = D2. According to the centering jig for the continuous casting intermediate tank and the crystallizer, the upper marker post is installed on the intermediate tank, the two lower marker posts are installed on the crystallizer, and accurate centering of a water gap of the intermediate tank and the crystallizer can be rapidly achieved by means of the position relation between the upper marker post and the two lower marker posts. And the molten steel can accurately flow into the crystallizer from the water gap of the intermediate tank.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting technology in the iron and steel metallurgical industry, and in particular to a centering fixture for a continuous casting intermediate tank and a crystallizer. Background Technology

[0002] In the steel metallurgical industry, continuous casting machines in steel plants distribute molten steel to various crystallizers via an tundish. During this distribution process, the alignment accuracy between the tundish nozzle and the crystallizer tubes is crucial to the production process and product quality. Misalignment between the tundish nozzle and the crystallizer tubes can lead to numerous problems, including billet composition segregation, billet cracks, increased casting resistance and fluctuations. Furthermore, misalignment causes uneven impact of molten steel on the crystallizer wall, increasing wear and damage. This not only poses a risk of steel leakage and threatens operator safety but also necessitates frequent crystallizer replacements, resulting in reduced production efficiency and increased production costs. Therefore, ensuring alignment between the tundish and the crystallizer is a pressing issue that needs to be addressed.

[0003] Chinese patent application number 202411876198.X discloses a centering device for the tundish nozzle and the crystallizer in continuous casting. This device includes components such as a tapered locking device, a positioning chuck, and a positioning rod. Not only is its structure complex, but each alignment requires reinstallation of all components, making operation extremely inconvenient and inefficient. Utility Model Content

[0004] The purpose of this utility model is to provide a centering fixture for a continuous casting intermediate tank and a crystallizer.

[0005] The technical solution to achieve the purpose of this utility model is: a centering fixture for a continuous casting tundish and a crystallizer, comprising an upper marker and two lower markers. The upper marker is erected and fixedly installed on the tundish, located to the side of the tundish nozzle, with a horizontal distance D1 between the upper marker and the center line of the tundish nozzle. The two lower markers are erected and fixedly installed on the crystallizer, arranged horizontally at intervals along a direction perpendicular to the lateral movement of the tundish, located to the side of the crystallizer, with a horizontal distance D2 between the lower marker and the center line of the crystallizer. The relationship between D1 and D2 satisfies D1=D2. The horizontal position of the bottom of the upper marker is higher than the horizontal position of the top of the lower marker. The upper marker and the two lower markers are staggered along a direction perpendicular to the lateral movement of the tundish.

[0006] Furthermore, both the upper and lower markers are vertically positioned.

[0007] Furthermore, the top of the lower indicator has a pointed tip. The pointed tip facilitates centering indication.

[0008] This utility model relates to a centering fixture for a continuous casting tundish and a crystallizer. It involves installing an upper marker on the tundish and two lower markers on the crystallizer. The horizontal distance D1 between the upper marker and the center line of the tundish nozzle is equal to the horizontal distance D2 between the lower markers and the center line of the crystallizer. The positional relationship between the upper marker and the two lower markers is used to determine the positions of the tundish nozzle and the crystallizer. For example, when the upper marker and the two lower markers are on the same straight line, the positions of the tundish nozzle and the crystallizer are aligned, thus achieving centering.

[0009] This utility model relates to a centering fixture for the continuous casting tundish and the crystallizer. Under the guidance of the upper and two lower markers, it can quickly and accurately center the tundish nozzle and the crystallizer. This design greatly reduces the centering error between the tundish nozzle and the crystallizer, ensuring that molten steel can accurately flow from the tundish nozzle into the crystallizer, avoiding problems such as molten steel overflow or uneven pouring.

[0010] This utility model relates to a centering fixture for continuous casting tundish and crystallizer. Not only is its structure simple, but operators can also directly observe the positional relationship between the upper and two lower markers to determine the alignment of the tundish nozzle and the crystallizer. This intuitive centering method is more accurate and efficient than traditional measuring tools. Furthermore, the upper and two lower markers are respectively positioned on the sides of the tundish nozzle and the crystallizer. Their placement does not affect the flow of molten steel. Simultaneously, the upper and lower markers are staggered along the direction perpendicular to the tundish's lateral movement, and the lower markers do not affect the lateral adjustment of the tundish. Throughout the entire operation, the upper and lower markers do not require manual movement and can remain permanently mounted on the tundish and crystallizer. In other words, there is no need to repeatedly install the upper and lower markers each time alignment is performed, making the centering operation of the tundish nozzle and the crystallizer simpler and more efficient.

[0011] Furthermore, the alignment fixture for the continuous casting intermediate tank and the crystallizer of this utility model has two lower markers. When the two lower markers are aligned with the same upper marker, the three points form a unique "line." Compared to the situation where two points at different positions can form multiple lines, this effectively avoids judgment errors caused by the observer's oblique gaze, greatly ensuring the accuracy of the alignment results. Moreover, the bottom of the upper marker is horizontally higher than the top of the lower marker. When the upper marker and the two lower markers are on the same straight line, the upper and lower markers intersect in the height direction. This intersection makes the positional relationship between the upper and lower markers clearer and more precise. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of the centering fixture for the continuous casting intermediate tank and the crystallizer of this utility model. The arrows in the diagram indicate the direction of the lateral movement of the intermediate tank.

[0013] Figure 2 This is a side view of the centering fixture for the continuous casting intermediate tank and the crystallizer of this utility model.

[0014] Figure 3 This is a schematic diagram of the lower marker of the centering fixture for the continuous casting intermediate tank and the crystallizer of this utility model. Detailed Implementation

[0015] The preferred embodiment of the centering fixture for the continuous casting intermediate tank and crystallizer of this utility model will be described in detail below with reference to the accompanying drawings:

[0016] like Figures 1 to 3 As shown, a centering fixture for a continuous casting tundish and a crystallizer includes an upper marker 1 and two lower markers 2. The upper marker 1 is upright and fixedly installed on the tundish 10, located to the side of the tundish nozzle 101, with a horizontal distance D1 between the upper marker 1 and the center line of the tundish nozzle 101. The two lower markers 2 are upright and fixedly installed on the crystallizer 20, arranged horizontally at intervals along a direction perpendicular to the lateral movement of the tundish 10, located to the side of the crystallizer 20, with a horizontal distance D2 between the lower markers 2 and the center line of the crystallizer 20. The relationship between D1 and D2 satisfies D1=D2. The horizontal position of the bottom of the upper marker 1 is higher than the horizontal position of the top of the lower marker 2. The upper marker 1 and the two lower markers 2 are staggered along a direction perpendicular to the lateral movement of the tundish 10.

[0017] This utility model relates to a centering fixture for a continuous casting tundish and a crystallizer. Molten steel in the tundish 10 is distributed to the crystallizer 20 through the tundish nozzle 101. Before distribution, the tundish 10 is finely adjusted laterally to center the nozzle 101 and the crystallizer 20. Specifically, the tundish 10 is finely adjusted laterally until the upper marker 1 and the two lower markers 2 are aligned on the same straight line. At this point, the tundish nozzle 101 and the crystallizer 20 are aligned. In the aligned state, the upper marker 1 and the two lower markers 2 are located on the same side of the centering line.

[0018] This utility model relates to a centering fixture for a continuous casting intermediate tank and a crystallizer. It involves installing an upper marker 1 on the intermediate tank 10 and two lower markers 2 on the crystallizer 20. The fixture ensures that the horizontal distance D1 between the upper marker 1 and the center line of the intermediate tank nozzle 101 is equal to the horizontal distance D2 between the lower markers 2 and the center line of the crystallizer 20. The positional relationship between the upper marker 1 and the two lower markers 2 is used to determine the positions of the intermediate tank nozzle 101 and the crystallizer 20. For example, when the upper marker 1 and the two lower markers 2 are on the same straight line, the positions of the intermediate tank nozzle 101 and the crystallizer 20 are also aligned, thus achieving centering.

[0019] This utility model relates to a centering fixture for the continuous casting tundish and the crystallizer. Under the guidance of the upper marker 1 and the two lower markers 2, it can quickly and accurately center the tundish nozzle 101 and the crystallizer 20. This design greatly reduces the centering error between the tundish nozzle 101 and the crystallizer 20, ensuring that molten steel can accurately flow from the tundish nozzle 101 into the crystallizer 20, avoiding problems such as molten steel overflow or uneven pouring.

[0020] This utility model provides a centering fixture for the continuous casting intermediate tank and the crystallizer. It is not only simple in structure, but also allows operators to directly observe the positional relationship between the upper marker 1 and the two lower markers 2 to determine the centering status of the intermediate tank nozzle 101 and the crystallizer 20. This intuitive centering method is more accurate and efficient than traditional measuring tools. Furthermore, the upper marker 1 and the two lower markers 2 of this utility model are respectively located on the sides of the intermediate tank nozzle 101 and the crystallizer 20. The setting of the upper marker 1 and the two lower markers 2 does not affect the outflow of molten steel. At the same time, along the direction perpendicular to the lateral movement of the intermediate tank 10, the upper marker 1 and the two lower markers 2 are staggered. The setting of the lower markers 2 does not affect the lateral movement adjustment of the intermediate tank 10. During the entire working process, the upper marker 1 and the two lower markers 2 do not need to be moved. Instead, they can be continuously installed on the intermediate tank 10 and the crystallizer 20. That is to say, each time alignment is performed, there is no need to repeatedly install the upper marker 1 and the two lower markers 2. The alignment operation of the intermediate tank nozzle 101 and the crystallizer 20 is simpler and more efficient.

[0021] Furthermore, in this utility model's centering fixture for the continuous casting intermediate tank and crystallizer, the number of lower markers 2 is two. When the two lower markers 2 are aligned with the same upper marker 1, the three points form a unique "line." Compared to the situation where two points at different positions can form multiple lines, this effectively avoids judgment errors caused by the observer's oblique gaze, greatly ensuring the accuracy of the centering results. Moreover, the horizontal position of the bottom of the upper marker 1 is higher than the horizontal position of the top of the lower marker 2. When the upper marker 1 and the two lower markers 2 are on the same straight line, the upper marker 1 and the lower marker 2 intersect in the height direction. This intersection makes the positional relationship between the upper marker 1 and the lower marker 2 clearer and more precise.

[0022] In this utility model, the centering fixture for the continuous casting intermediate tank and the crystallizer is preferably provided in which the upper marker 1 and the lower marker 2 are both vertically arranged.

[0023] In this utility model, the centering fixture for the continuous casting intermediate tank and the crystallizer preferably has a pointed tip 21 at the top of the lower indicator 2. The pointed tip 21 facilitates centering indication.

[0024] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A centering fixture for a continuous casting intermediate tank and a crystallizer, characterized in that: The system includes an upper marker and two lower markers. The upper marker is erected and fixedly installed on the intermediate tank, located to the side of the intermediate tank's inlet. The horizontal distance between the upper marker and the center line of the intermediate tank's inlet is D1. The two lower markers are erected and fixedly installed on the crystallizer, arranged horizontally at intervals along a direction perpendicular to the lateral movement of the intermediate tank. The lower markers are located to the side of the crystallizer, and the horizontal distance between the lower marker and the center line of the crystallizer is D2. The relationship between D1 and D2 satisfies D1=D2. The horizontal position of the bottom of the upper marker is higher than the horizontal position of the top of the lower marker. The upper marker and the two lower markers are staggered along a direction perpendicular to the lateral movement of the intermediate tank.

2. The centering fixture for the continuous casting intermediate tank and the crystallizer according to claim 1, characterized in that: Both the upper and lower markers are set vertically.

3. The centering fixture for the continuous casting intermediate tank and the crystallizer according to claim 1, characterized in that: The top of the lower marker has a pointed tip.

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