A hollow roll

Abstract

The utility model relates to the technical field of roll, and disclose a hollow roll, including roll body, the inner middle part of roll body is provided with the inner bag, and the inside of inner bag is provided with a plurality of reinforced columns, the outer wall of inner bag is provided with wear -resisting alloy steel, the inner wall of inner bag is provided with high -strength aluminium alloy layer, the outer wall of wear -resisting alloy steel is provided with corrosion -resistant layer, and the inner wall of high -strength aluminium alloy layer is provided with ceramic layer, in the utility model, the corrosion resistance of roll body surface is improved through the corrosion -resistant layer, avoids producing corrosion, and wear -resisting alloy steel and high -strength aluminium alloy layer improve the strength of roll body whole, and a plurality of reinforced columns support roll body, avoid producing deformation, improve the service life, do not affect use, inject cooling gas through the air pipe, and discharge through the air pipe, carry out the cooling to liquid, avoid long -term high -temperature operation and easily cause surface crack, wear aggravation and other problems.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, specifically a hollow rolling mill roll. Background Technology

[0002] In existing steel rolling production processes, traditional solid rolls are prone to cracking due to insufficient strength, rendering them unusable. Furthermore, their surfaces are easily corroded, reducing their service life. Additionally, the lack of effective internal cooling channels can lead to surface cracking and accelerated wear during prolonged high-temperature operation. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a hollow roll with advantages such as high strength, thus solving the problems mentioned in the background art.

[0004] To achieve the aforementioned high strength objective, this utility model provides the following technical solution: a hollow roll, comprising a roll body, wherein an inner liner is provided in the middle of the roll body, and multiple steel bars are provided inside the inner liner;

[0005] The outer wall of the inner liner is provided with wear-resistant alloy steel, the inner wall of the inner liner is provided with a high-strength aluminum alloy layer, the outer wall of the wear-resistant alloy steel is provided with a corrosion-resistant layer, and the inner wall of the high-strength aluminum alloy layer is provided with a ceramic layer.

[0006] As a further improvement of this utility model: an air inlet pipe is connected to the front of the upper end of the roll body, and an air outlet pipe is connected to the rear of the upper end of the roll body. Both the air inlet pipe and the air outlet pipe are equipped with control valves. Cooling gas is injected through the air inlet pipe and discharged through the air outlet pipe to cool the liquid and avoid problems such as surface cracking and accelerated wear caused by long-term high-temperature operation.

[0007] As a further improvement of this utility model: the corrosion-resistant layer is an anti-corrosion paint, which improves the corrosion resistance of the roll body surface and avoids corrosion.

[0008] As a further improvement of this utility model: the front and rear ends of the roll body are provided with side covers, the middle of the outer end wall of the side cover is provided with a connecting pipe, and the surface of the side cover is provided with multiple locking bolts. The locking bolts are threadedly connected to the roll body. Tightening the locking bolts allows the two side covers to be installed on the roll body, which facilitates installation and disassembly.

[0009] As a further improvement of this utility model: the inner wall of each side cover is provided with a sealing gasket, which is made of rubber material. The sealing gasket improves the sealing performance at the connection between the side cover and the roll body and avoids leakage.

[0010] As a further improvement of this utility model: two support rods are installed on both sides of the roll body, and a base is installed at the lower end of each support rod, so that the four support rods support the roll body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the corrosion-resistant layer improves the corrosion resistance of the roll body surface, preventing corrosion. The wear-resistant alloy steel and high-strength aluminum alloy layers improve the overall strength of the roll body. Multiple steel bars support the roll body, preventing deformation and improving service life without affecting use.

[0013] 2. In this utility model, cooling gas is injected through the air inlet pipe and discharged through the air outlet pipe to cool the liquid, thus avoiding problems such as surface cracking and accelerated wear caused by long-term high-temperature operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a schematic diagram of the material structure of the roll body in this utility model.

[0017] In the diagram: 1. Roll body; 2. Connecting pipe; 3. Side cover; 4. Locking bolt; 5. Air inlet pipe; 6. Air outlet pipe; 7. Wear-resistant alloy steel; 8. Inner liner; 9. Reinforcing bar column; 10. Corrosion-resistant layer; 11. Sealing gasket; 12. Support rod; 13. Base; 14. High-strength aluminum alloy layer; 15. Ceramic layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-3 In this embodiment of the utility model, a hollow roll includes a roll body 1, an inner liner 8 is provided in the middle of the roll body 1, and multiple steel bars 9 are provided inside the inner liner 8.

[0020] The outer wall of the inner liner 8 is provided with wear-resistant alloy steel 7, the inner wall of the inner liner 8 is provided with a high-strength aluminum alloy layer 14, the outer wall of the wear-resistant alloy steel 7 is provided with a corrosion-resistant layer 10, and the inner wall of the high-strength aluminum alloy layer 14 is provided with a ceramic layer 15.

[0021] The roll body 1 has an air inlet pipe 5 connected to the front of its upper end and an air outlet pipe 6 connected to the rear of its upper end. Both the air inlet pipe 5 and the air outlet pipe 6 are equipped with control valves. Cooling gas is injected through the air inlet pipe 5 and discharged through the air outlet pipe 6 to cool the liquid and prevent surface cracking and accelerated wear caused by long-term high-temperature operation. The corrosion-resistant layer 10 is an anti-corrosion paint, which improves the corrosion resistance of the surface of the roll body 1 and prevents corrosion. The roll body 1 has side covers 3 at both the front and rear ends, and connecting pipes 2 are installed in the middle of the outer end wall of the side covers 3. Each side cover 3 has multiple locking bolts 4 on its surface. The locking bolts 4 are threaded to the roll body 1. Tightening the locking bolts 4 allows the two side covers 3 to be installed on the roll body 1, facilitating installation and disassembly. Each side cover 3 has a sealing gasket 11 on its inner wall. The sealing gasket 11 is made of rubber material. The sealing gasket 11 improves the sealing performance at the connection between the side cover 3 and the roll body 1, preventing leakage. Each side wall of the roll body 1 has two support rods 12. Each support rod 12 has a base 13 installed at its lower end. The four support rods 12 support the roll body 1.

[0022] The working principle of this utility model is as follows: Tighten the locking bolt 4 to install the two side covers 3 on the roll body 1. The sealing gasket 11 improves the sealing performance at the connection between the side cover 3 and the roll body 1 to prevent leakage. The pipeline is connected through the connecting pipes 2 on both sides. The corrosion-resistant layer 10 improves the corrosion resistance of the surface of the roll body 1 to prevent corrosion. The wear-resistant alloy steel 7 and the high-strength aluminum alloy layer 14 improve the overall strength of the roll body 1. Multiple steel bars 9 support the roll body 1 to prevent deformation. When the internal temperature of the roll body 1 is too high, cooling gas is injected through the air inlet pipe 5 and discharged through the air outlet pipe 6 to cool the liquid. Four support rods 12 support the roll body 1.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hollow roll, comprising a roll body (1), an inner liner (8) provided in the middle of the roll body (1), wherein a plurality of steel bars (9) are provided inside the inner liner (8); Its features are: The outer wall of the inner liner (8) is provided with wear-resistant alloy steel (7), the inner wall of the inner liner (8) is provided with a high-strength aluminum alloy layer (14), the outer wall of the wear-resistant alloy steel (7) is provided with a corrosion-resistant layer (10), and the inner wall of the high-strength aluminum alloy layer (14) is provided with a ceramic layer (15).

2. A hollow rolling mill roll according to claim 1, characterized in that: An air inlet pipe (5) is connected to the front of the upper end of the roll body (1), and an air outlet pipe (6) is connected to the rear of the upper end of the roll body (1). Both the air inlet pipe (5) and the air outlet pipe (6) are equipped with control valves.

3. A hollow rolling mill roll according to claim 1, characterized in that: The corrosion-resistant layer (10) is an anti-corrosion paint.

4. A hollow rolling mill roll according to claim 1, characterized in that: The front and rear ends of the roll body (1) are provided with side covers (3), and the middle of the outer end wall of the side cover (3) is provided with a connecting pipe (2). The surface of the side cover (3) is provided with multiple locking bolts (4), and the locking bolts (4) are threadedly connected to the roll body (1).

5. A hollow rolling mill roll according to claim 4, characterized in that: Each side cover (3) has a sealing gasket (11) on its inner wall, and the sealing gasket (11) is made of rubber material.

6. A hollow rolling mill roll according to claim 1, characterized in that: Two support rods (12) are installed on both sides of the roll body (1), and a base (13) is installed at the lower end of each support rod (12).

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