Crystallizer centering device of continuous casting circular submersed nozzle

Abstract

The utility model relates to a crystallizer centering device of a continuous casting circular submersed nozzle, and belongs to the technical field of metallurgical industry. Comprising a fixing fork, an arc-shaped clamping opening is formed in the center of one side of the fixing fork, and the clamping opening is matched with the circular submersed nozzle; the center of the other side of the fixing fork is provided with a horizontally-arranged grab handle, one end of the grab handle is fixed to the fixing fork through a connecting piece, the other end of the grab handle is placed on the outer edge of the crystallizer, and the center line of the grab handle is parallel to the wide edge of the crystallizer. The fixing fork is provided with two symmetrically-arranged fork teeth, so that the fixing fork is a laterally-placed concave structural part. The width of the fixing fork is matched with the height of an inner cavity of the crystallizer, so that the two fork teeth are attached to the inner wall of the crystallizer. By means of the centering device, centering of the circular submersed nozzle can be rapidly and accurately completed, the centering accuracy of the continuous casting nozzle is improved, and then the influence caused by unstable flowing of continuously-poured metal liquid is relieved.

Description

Technical Field

[0001] The utility model relates to a crystallizer centering device for a continuous casting round submerged nozzle, belonging to the technical field of the metallurgical industry. Background Art

[0002] Centering the submerged nozzle in the crystallizer for square billets, rectangular billets or slab billets has a crucial impact on the stability of the flow field in the crystallizer. The centering of the submerged nozzle is directly related to the control of inclusions and cracks. At present, due to the lack of a reference point in the crystallizer, the centering of the round submerged nozzle often relies on visual judgment based on manual experience, and it is difficult to ensure the centering accuracy. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a crystallizer centering device for a continuous casting round submerged nozzle according to the above-mentioned prior art, which can quickly and accurately complete the centering of the round submerged nozzle and improve the centering accuracy.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows: A crystallizer centering device for a continuous casting round submerged nozzle includes a fixed fork. An arc-shaped bayonet is arranged at the center of one side of the fixed fork, and the bayonet matches the round submerged nozzle; a horizontally arranged handle is provided at the center of the other side of the fixed fork. One end of the handle is fixed to the fixed fork through a connecting piece, and the other end of the handle is placed on the outer edge of the crystallizer, and the center line of the handle is parallel to the wide side of the crystallizer.

[0005] Two symmetrically arranged fork teeth are provided on the fixed fork, so that the fixed fork is a concave structural member placed sideways; the width of the fixed fork matches the height of the inner cavity of the crystallizer, so that the two fork teeth are in contact with the inner wall of the crystallizer.

[0006] A non-metallic wear-resistant lining is provided on the outer side of the fork teeth.

[0007] The non-metallic wear-resistant lining is one of a wooden or high-molecular material made member.

[0008] Scale lines are provided on the handle, and the distance between the starting position of the scale lines and the fixed fork is half of the width of the crystallizer.

[0009] Compared with the prior art, the advantages of the utility model are as follows: A crystallizer centering device for a continuous casting round submerged nozzle can quickly and accurately complete the centering of the round submerged nozzle, improve the centering accuracy of the continuous casting nozzle, and further reduce the influence brought by the unstable flow of the molten metal during continuous casting. Brief Description of the Drawings

[0010] Figure 1 It is a schematic diagram of a crystallizer centering device for a continuous casting round submerged nozzle according to an embodiment of the utility model;

[0011] In the figure, there are a mold 1, a fixed fork 2, a circular submerged nozzle 3, a bayonet 4, a connecting piece 5, a handle 6, and fork teeth 7. Specific embodiments

[0012] The following further describes the present utility model in detail in conjunction with the embodiments in the accompanying drawings.

[0013] As Figure 1 shown, a mold centering device for a continuous casting circular submerged nozzle in this embodiment includes a fixed fork 2 made of metal. There are two symmetrically arranged fork teeth 7 on the fixed fork 2, making the fixed fork 2 in a concave shape placed sideways. An arc-shaped bayonet 4 is provided at the center of the groove of the fixed fork 2. The arc of the bayonet 4 matches the circular submerged nozzle 3, so that the circular submerged nozzle 3 can closely adhere to the bayonet 4. A horizontally arranged handle 6 is provided at the center on the other side of the fixed fork 2. One end of the handle 6 is fixed to the fixed fork 2 through a connecting piece 5. The length of the handle 6 is 10 - 100 mm longer than the width of the mold 1, ensuring that the other end of the handle 6 naturally lies on the outer edge of the mold 1, and the center line of the handle 6 is parallel to the wide side of the mold 1.

[0014] The width of the fixed fork 2 matches the height of the inner cavity of the mold 1, so that the two fork teeth 7 are in contact with the inner wall of the mold 1.

[0015] Scale lines are engraved on the handle 6. The distance between the starting position of the scale line and the fixed fork is half of the width of the mold.

[0016] The outer sides of the above fork teeth are wrapped with a non-metallic wear-resistant lining. The material of the non-metallic wear-resistant lining is one of wood and polymer materials, which improves the service life of the fixed fork.

[0017] The handle determines the center of the width of the mold. After leveling the fixed fork with an arc-shaped bayonet and fixing it to the mold, the absolute plane center of the mold can be indicated. When moving the tundish, adjust the circular submerged nozzle to closely adhere to the arc-shaped bayonet to achieve complete centering of the circular submerged nozzle in the mold. This application can accurately determine the geometric center point of the mold plane and the installation point of the circular submerged nozzle, improve the centering accuracy of the continuous casting nozzle, and thus reduce the influence brought by the unstable flow of the molten metal during continuous pouring.

[0018] In addition to the above embodiments, the present utility model also includes other embodiments. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present utility model.

Claims

1. A mold centering device for a continuous casting circular submerged nozzle, characterized in that: It comprises a fixing fork, a circular arc-shaped bayonet is arranged at the center of one side of the fixing fork, and the bayonet matches the circular immersion water outlet; a horizontally arranged handle is arranged at the center of the other side of the fixing fork, one end of the handle is fixed to the fixing fork through a connecting piece, and the other end of the handle is placed on the outer edge of the crystallizer, and the center line of the handle is parallel to the wide side of the crystallizer.

2. The mold centering device for a continuous casting circular submerged nozzle according to claim 1, characterized in that: The fixing fork has two symmetrically arranged fork teeth, so that the fixing fork is a concave structural member placed on its side; the width of the fixing fork matches the height of the inner cavity of the crystallizer, so that the two fork teeth fit against the inner wall of the crystallizer.

3. The mold centering device for a continuous casting circular submerged nozzle according to claim 2, characterized in that: The outer side surface of the fork tine is provided with a non-metallic wear-resistant lining.

4. The mold centering device for a continuous casting circular submerged nozzle according to claim 3, characterized in that: The non-metallic wear-resistant lining is made of wood or polymer materials.

5. The mold centering device for a continuous casting circular submerged nozzle according to claim 1, characterized in that: The handle is provided with scale lines, and the distance between the starting position of the scale lines and the fixed fork is half of the width of the crystallizer.

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