Long nozzle with high structural strength

Abstract

The utility model discloses a long nozzle with high structural strength, which comprises a nozzle body and an outer reinforcing component, the outer reinforcing component is arranged on the outer surface of the nozzle body and consists of an embedded pile, a longitudinal fillet and a restraint lantern ring, the longitudinal fillet is attached to the outer surface of the nozzle body, and the restraint lantern ring is arranged on the outer surface of the longitudinal fillet. The section of the embedded pile is in a T shape, the T-shaped end of the embedded pile is buried in the outer side wall of the water gap body, and the other end of the embedded pile and the inner wall of the longitudinal fillets are fixed together through welding. The inner wall of the nozzle body is protected by arranging the anti-erosion layer made of the aluminum-zirconium-carbon material, the outer reinforcing assembly made of the nickel-chromium alloy material is installed on the outer surface of the nozzle body, and the outer reinforcing assembly has the advantages of being high in strength, heat resistance and corrosion resistance and can play a role in protecting the outer surface of the nozzle body, so that the service life of the nozzle body is prolonged, and the service life of the nozzle body is prolonged. Double protection structures are arranged inside and outside the nozzle, so that the overall structural strength of the long nozzle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a long shroud with high structural strength. Background Art

[0002] The shroud, also known as the protective sleeve, is an important component connecting the ladle and the tundish in the continuous casting operation. Its main function is to prevent the molten steel entering the tundish from the ladle from being secondary oxidized and splashing, to ensure the purity of the molten steel and the stability of the casting process, thereby improving the quality of the steel. The shroud is usually designed as a tube, with a length generally between 600 and 1800 mm and a diameter of 90 to 150 mm. It must have excellent thermal shock resistance, good mechanical strength and resistance to alternating erosion of molten steel and slag to cope with the high temperature changes and erosion generated during the casting process. According to the different materials, the shroud is mainly divided into fused quartz shroud and aluminum carbon shroud. The fused quartz shroud has good thermal shock resistance and high mechanical strength, but it is easy to form low-melting products with oxides in molten steel or slag, which is not conducive to smelting clean steel. The aluminum carbon shroud has strong adaptability to steel grades and good corrosion resistance, but it generally needs to be baked before use, otherwise there is a risk of cracking. The shroud has played an important role in the development of continuous casting technology. Its design, material and process have been carefully selected and optimized to ensure its best performance and longest service life in continuous casting operations.

[0003] When some existing long nozzles are in use, a protective structure is usually set on the inner wall of the nozzle to prevent the inner wall of the nozzle from being damaged, but the outer surface of the nozzle lacks a corresponding reinforcement structure, and the overall structural strength of the nozzle cannot be further improved.

[0004] For example, a highly wear-resistant sliding ladle shroud with a long nozzle having a sliding shape is disclosed with the announcement number CN218775661U. This patent adds a lining structure to the steel flow channel of the shroud. The upper end of the lining structure is an anti-inner diameter expansion lining. The material used is consistent with the sliding quick-change plate surface, has high strength, and is not easily corroded. The lower end of the lining structure is a thermal shock-resistant lining to prevent cracking caused by thermal shock.

[0005] The lining structure of this patent is arranged in the flow steel channel of the nozzle, which can prevent the inner wall of the nozzle from being damaged, but the outer surface of the nozzle lacks a corresponding reinforcement structure and cannot further improve the overall structural strength of the nozzle.

[0006] Therefore, it is necessary to invent a long shroud with high structural strength to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a long shroud with high structural strength to solve the problems in the above technology.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long water nozzle with high structural strength, comprising a water nozzle body and an external reinforcement component, wherein the external reinforcement component is arranged on the outer surface of the water nozzle body, and the external reinforcement component is composed of embedded piles, longitudinal ribs and constraint rings, and the longitudinal ribs are attached to the outer surface of the water nozzle body, and the cross-sectional shape of the embedded pile is T-shaped, and the T-shaped end of the embedded pile is buried inside the outer side wall of the water nozzle body, and the other end of the embedded pile is fixed to the inner wall of the longitudinal rib by welding, and the constraint ring is sleeved on the outer side of the water nozzle body, and the inner wall of the constraint ring is fixed to the outer wall of the longitudinal rib by welding.

[0009] The external reinforcement component is arranged on the outer surface of the nozzle body, which can prevent the nozzle from being broken due to accidental collision.

[0010] Preferably, the embedded piles are arranged in six groups, and the six groups of embedded piles are distributed in a circular array around the outer surface of the nozzle body.

[0011] By sintering one end of the embedded pile with the nozzle body, the embedded pile can be prevented from falling off.

[0012] Preferably, the number of the embedded piles in each group is set to four, and the four embedded piles are distributed in a straight line array from top to bottom.

[0013] The placement of embedded piles provides the basis for the installation of longitudinal ribs.

[0014] Preferably, the number of the longitudinal ribs is set to six, and the six longitudinal ribs are distributed in a ring array around the outer surface of the nozzle body, and the six longitudinal ribs are matched with six groups of embedded piles respectively.

[0015] The longitudinal ribs are arranged in close contact with the outer surface of the nozzle body, which can improve the outer surface strength of the nozzle body.

[0016] Preferably, the number of the restraining rings is set to four, and the four restraining rings are distributed in a linear array from top to bottom.

[0017] Welding the restraining collar to the outside of the longitudinal ribs can further improve the outer surface strength of the nozzle body.

[0018] Preferably, the embedded piles, longitudinal ribs and restraining rings are all made of nickel-chromium alloy material.

[0019] The external reinforcement components made of nickel-chromium alloy have the characteristics of high strength, high heat resistance and corrosion resistance, and can maintain stable performance in high-temperature metallurgical environments.

[0020] Preferably, the top end of the nozzle body is fixedly connected with a docking bowl mouth, and the bottom end of the nozzle body is fixedly connected with a slag line segment.

[0021] The top of the nozzle is connected to the nozzle at the bottom of the ladle by using the butt bowl, and the slag line segment extends into the middle ladle to prevent the slag from corroding the bottom of the nozzle.

[0022] Preferably, the inner wall of the nozzle body and the docking bowl mouth is fixedly connected with an anti-corrosion layer, and the anti-corrosion layer is made of aluminum-zirconium-carbon material.

[0023] The anti-corrosion layer of aluminum-zirconium-carbon material can protect the inner wall of the nozzle body and prevent the inner wall of the nozzle from being scoured and eroded by molten steel.

[0024] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0025] An anti-corrosion layer of aluminum-zirconium-carbon material is provided to protect the inner wall of the nozzle body, and an external reinforcement component of nickel-chromium alloy is installed on the outer surface of the nozzle body. The external reinforcement component has the characteristics of high strength, high heat resistance and corrosion resistance, and can protect the outer surface of the nozzle body. A double protection structure is provided inside and outside the nozzle, which is beneficial to improving the overall structural strength of the long nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first viewing angle;

[0027] Figure 2 This is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0028] Figure 3 It is a structural sectional view of the utility model;

[0029] Figure 4 For this utility model Figure 3 A magnified view of the structure of part A;

[0030] Figure 5 It is a structural schematic diagram of the external reinforcement component of the utility model.

[0031] Description of reference numerals:

[0032] 1. Nozzle body; 2. Embedded piles; 3. Longitudinal ribs; 4. Constraint rings; 5. Butt bowl; 6. Slag line segment; 7. Anti-corrosion layer. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] The utility model provides Figure 1-5A long sprue with high structural strength is shown, comprising a sprue body 1 and an external reinforcement component, wherein the external reinforcement component is arranged on the outer surface of the sprue body 1, and the external reinforcement component is composed of an embedded pile 2, a longitudinal rib 3 and a constraint ring 4, the longitudinal rib 3 is attached to the outer surface of the sprue body 1, the cross-sectional shape of the embedded pile 2 is T-shaped, the T-shaped end of the embedded pile 2 is buried inside the outer side wall of the sprue body 1, the other end of the embedded pile 2 is fixed to the inner wall of the longitudinal rib 3 by welding, the constraint ring 4 is sleeved on the outer side of the sprue body 1, and the inner wall of the constraint ring 4 is fixed to the outer wall of the longitudinal rib 3 by welding.

[0035] In one aspect of the present embodiment, the embedded piles 2 are arranged in six groups, and the six groups of embedded piles 2 are distributed in a circular array around the outer surface of the nozzle body 1. The number of embedded piles 2 in each group is set to four, and the four embedded piles 2 are distributed in a straight array from top to bottom. The number of longitudinal ribs 3 is set to six, and the six longitudinal ribs 3 are distributed in a circular array around the outer surface of the nozzle body 1. The six longitudinal ribs 3 are respectively matched with the six groups of embedded piles 2. The number of constraint rings 4 is set to four, and the four constraint rings 4 are distributed in a straight array from top to bottom. The embedded piles 2, the longitudinal ribs 3 and the constraint rings 4 are all made of nickel-chromium alloy material, the top end of the nozzle body 1 is fixedly connected to a docking bowl 5, the bottom end of the nozzle body 1 is fixedly connected to a slag line segment 6, the inner walls of the nozzle body 1 and the docking bowl 5 are fixedly connected to an anti-corrosion layer 7, and the anti-corrosion layer 7 is made of aluminum-zirconium-carbon material.

[0036] Working principle of this utility model:

[0037] Refer to the instruction manual Figure 1-5 When using the utility model, before sintering and fixing the nozzle body 1, the butt bowl 5, the slag line segment 6 and the anti-corrosion layer 7, first bury the T-shaped end of the embedded pile 2 inside the outer wall of the nozzle body 1. After the nozzle body 1 is sintered and formed, the embedded pile 2 can be firmly fixed to the nozzle body 1 and is not easy to fall off. Then, the longitudinal rib 3 and the other end of the embedded pile 2 are welded and fixed together, and the longitudinal rib 3 is attached to the outer surface of the nozzle body 1. Then, the constraint ring 4 is put on the outer side of the nozzle body 1, and about The collar 4 is fixed to the longitudinal ribs 3 by welding, so that the external reinforcement component is fixed on the outer surface of the nozzle body 1. The inner walls of the nozzle body 1 and the docking bowl 5 are provided with an anti-corrosion layer 7 made of aluminum-zirconium-carbon material, which has high strength and high thermal shock resistance, and can play a good protective role on the inner wall of the nozzle body 1. The external reinforcement component is made of nickel-chromium alloy material as a whole, which has the characteristics of high strength, high heat resistance and corrosion resistance, and can play a good protective role on the outer surface of the nozzle body 1, which is beneficial to further improve the overall structural strength of the long nozzle.

Claims

1. A long shroud with high structural strength, comprising a shroud body (1) and an external reinforcement component, characterized in that: The external reinforcement component is arranged on the outer surface of the nozzle body (1), and the external reinforcement component is composed of an embedded pile (2), a longitudinal rib (3) and a restraining collar (4). The longitudinal rib (3) is attached to the outer surface of the nozzle body (1), the cross-sectional shape of the embedded pile (2) is T-shaped, and the T-shaped end of the embedded pile (2) is buried inside the outer wall of the nozzle body (1), and the other end of the embedded pile (2) is fixed to the inner wall of the longitudinal rib (3) by welding. The restraining collar (4) is sleeved on the outer side of the nozzle body (1), and the inner wall of the restraining collar (4) is fixed to the outer wall of the longitudinal rib (3) by welding.

2. A shroud with high structural strength according to claim 1, characterized in that: The embedded piles (2) are arranged in six groups, and the six groups of embedded piles (2) are distributed in a circular array around the outer surface of the nozzle body (1).

3. A shroud with high structural strength according to claim 1, characterized in that: The number of the embedded piles (2) in each group is set to four, and the four embedded piles (2) are distributed in a straight line array from top to bottom.

4. A shroud with high structural strength according to claim 1, characterized in that: The number of the longitudinal ribs (3) is set to six, and the six longitudinal ribs (3) are distributed in a ring array around the outer surface of the nozzle body (1), and the six longitudinal ribs (3) are matched with six groups of embedded piles (2) respectively.

5. The shroud with high structural strength according to claim 1, characterized in that: The number of the restraining collars (4) is set to four, and the four restraining collars (4) are distributed in a linear array from top to bottom.

6. A shroud with high structural strength according to claim 1, characterized in that: The embedded pile (2), the longitudinal ribs (3) and the restraining ring (4) are all made of nickel-chromium alloy material.

7. The shroud with high structural strength according to claim 1, characterized in that: The top end of the nozzle body (1) is fixedly connected to a docking bowl mouth (5), and the bottom end of the nozzle body (1) is fixedly connected to a slag line segment (6).

8. A shroud with high structural strength according to claim 7, characterized in that: The inner wall of the nozzle body (1) and the butt bowl mouth (5) is fixedly connected with an anti-corrosion layer (7), and the anti-corrosion layer (7) is made of aluminum-zirconium-carbon material.

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