Tundish with accurate size

Abstract

The tundish with the accurate size comprises a tundish shell, a tundish wall mold is arranged in the tundish shell, a pouring cavity is formed between the tundish shell and the tundish wall mold, four positioning blocks are fixed in the pouring cavity, and two positioning blocks are distributed on each of the front side and the rear side of the tundish shell. The four positioning blocks are located on the upper portion of the pouring cavity. Compared with the prior art, the tundish wall mold has the technical effects that the tundish wall mold is provided with the positioning blocks, so that the radial position of the tundish wall mold can be conveniently controlled, the difference between the size of the integrally cast permanent layer and the design requirement is small, and the service life of the tundish is prolonged.

Description

Precisely sized intermediate package Technical Field

[0001] This utility model belongs to the field of steelmaking technology, specifically relating to a dimensionally precise tundish. Background Technology

[0002] In steelmaking, a tundish is needed. The tundish uses a multi-nozzle structure to distribute molten steel to multiple crystallizers, enabling multi-strand continuous casting production.

[0003] As shown in Figure 1, during the manufacturing of the tundish, the tundish shell 10 is first made, and then the shell mold 21 is installed inside it, so that the tundish shell 10 and the shell mold 21 form a casting cavity 22. Then, high-alumina castable is poured into the casting cavity 22 to form an integral casting permanent layer.

[0004] The technical challenge lies in the fact that the radial positioning of the tundish mold 21 is not easy to control. It may be thicker in one phase and thinner in the other, resulting in a large discrepancy between the overall dimensions of the permanent casting layer and the design requirements, which affects the service life of the tundish. Summary of the Invention

[0005] The technical problem this invention aims to solve is: how to design a precisely sized intermediate ladle so that the dimensions of the overall cast permanent layer are close to the design requirements.

[0006] The specific technical solution of this utility model is as follows:

[0007] A precisely sized intermediate package includes an intermediate package shell with a wall mold inside. A casting cavity is formed between the intermediate package shell and the wall mold. Four positioning blocks are fixed in the casting cavity, with two positioning blocks distributed on the front and rear sides of the intermediate package shell.

[0008] Four positioning blocks are located at the top of the casting cavity.

[0009] Compared with the prior art, the technical effect of this utility model is that it is equipped with a positioning block, which facilitates the control of the radial position of the tundish wall mold, so that the size of the overall casting permanent layer is less different from the design requirements, and the service life of the tundish is increased. Attached Figure Description

[0010] Figure 1 is a schematic diagram of the prior art.

[0011] Figure 2 is a schematic diagram of this utility model. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0013] As shown in Figure 2, a precisely sized intermediate bag includes an intermediate bag shell 10, which has a bag wall mold 21 inside. A casting cavity 22 is formed between the intermediate bag shell 10 and the bag wall mold 21. Four positioning blocks 23 are fixed in the casting cavity 22, with two positioning blocks 23 distributed on the front and rear sides of the intermediate bag shell 10.

[0014] For ease of fixing, the four positioning blocks 23 are located on the upper part of the casting cavity 22. This position is far from the molten steel and has little impact.

[0015] Its working principle is as follows:

[0016] The intermediate packaging manufacturing process includes the following steps:

[0017] S1. First, make the intermediate ladle shell: After making the intermediate ladle shell, clean the intermediate ladle shell to ensure that there are no impurities on the surface, and install the sprue brick mold as the bottom forming reference.

[0018] S2. Casting the permanent layer at the bottom of the ladle: The permanent layer at the bottom of the ladle is cast integrally using high-alumina castable. During casting, vibration is used to compact the material and keep the surface flat.

[0019] S3. Casting the permanent side layer: Fix four positioning blocks 23 on the upper part of the casting cavity 22, place the wall-encasing mold 21 between the four positioning blocks 23, and then cast the permanent side layer as a whole using high-alumina castable. During the casting process, avoid stopping the machine to ensure uniform material filling.

[0020] The bottom of the tundish mold is where the permanent layer of the tundish bottom is poured. With the positioning of four positioning blocks 23, the radial positioning of the tundish mold is accurate, and there will be no situation where it is thicker in one direction and thinner in another. The position of the tundish mold is very accurate, so that the size of the overall permanent layer is less different from the design requirements, thus enhancing the service life of the tundish.

[0021] For other details, please refer to the existing technology.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A precisely sized intermediate ladle, comprising an intermediate ladle shell (10) having a wall-forming mold (21) therein, wherein a casting cavity (22) is formed between the intermediate ladle shell (10) and the wall-forming mold (21), characterized in that: Four positioning blocks (23) are fixed inside the casting cavity (22), with two positioning blocks (23) distributed on the front and rear sides of the intermediate liner shell (10).

2. The dimensionally accurate intermediate package as described in claim 1, characterized in that: Four positioning blocks (23) are located on the upper part of the casting cavity (22).

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