Finish rolling guide device for preventing edge of hot rolled strip steel from being scratched

Abstract

The utility model discloses a finish rolling guide device for preventing the edge part of hot rolled strip steel from being scratched, which comprises a vertical roll device and cooling devices, the vertical roll device is arranged at the inlet of the guide device, and the cooling devices are arranged at the two sides of the vertical roll device. By changing the friction mode of the contact surface, the surface cooling is increased, the degradation time of the contact surface of the guide device and the strip steel is effectively slowed down, the replacement period is prolonged to about 20 days, and the product quality stability and the production efficiency of a production line are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot rolling mill guides, and in particular relates to a finishing rolling guide device for preventing the edge of a hot-rolled strip from being scratched. Background Art

[0002] At present, in the production process of hot rolling, in order to ensure that the strip steel enters the rolling mill smoothly for rolling, a centering guide device is installed in front of the rolling mill. Because the guide device has to contact the edge of the strip steel for a long time, the contact surface of the conventional guide device will produce surface peeling and cracking after long-term high temperature baking and intense friction. These problems will cause scratches on the edge of the strip steel. The machine can only be stopped to grind the peeling and cracking positions on the surface of the guide device until the worn parts are replaced. Its service life is generally 3-4 days. The high frequency of replacement of the guide device reduces production efficiency and increases the labor intensity of the staff. Utility Model Content

[0003] Technical problems solved: In response to the above technical problems, the utility model provides a finishing guide device for preventing scratches on the edges of hot-rolled strip steel. By changing the friction mode of the contact surface and increasing surface cooling, the deterioration time of the contact surface between the guide device and the strip steel is effectively slowed down. The replacement cycle is extended to about 20 days, thereby improving the stability of the production line product quality and the production efficiency.

[0004] Technical solution: A finishing rolling guide device for preventing the edge of a hot-rolled strip from being scratched, comprising a vertical roller device and a cooling device, wherein the vertical roller device is arranged at the entrance of the guide device, and the cooling device is arranged on both sides of the vertical roller device.

[0005] Preferably, the vertical roller device comprises a small cylindrical vertical roller, and the upper and lower shaft heads of the small vertical roller are fixed to the main body of the guide device through a pressure plate.

[0006] Furthermore, the pressure plate is connected to the main body of the guide device through bolts.

[0007] Preferably, the cooling device comprises a cooling manifold, and the cooling manifold is arranged on one side of the vertical roller device and is parallel to the axis of the vertical roller device.

[0008] Furthermore, the cooling manifold is provided with a nozzle.

[0009] Beneficial effects: The utility model device changes the friction mode of the contact surface and increases surface cooling, which effectively slows down the deterioration time of the contact surface between the guide device and the strip steel, and extends the replacement cycle to about 20 days, thereby improving the stability of the production line product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of a finishing rolling guide device for preventing the edge of a hot-rolled steel strip from being scratched in the utility model;

[0011] Figure 2 This is a schematic diagram of the positional relationship between the vertical roller device and the cooling device of the utility model;

[0012] Serial numbers in the figure: 1. guide device, 2. vertical roller device, 2-1. small vertical roller, 2-2. pressure plate, 3. cooling device, 3-1. cooling manifold, 3-2. nozzle. DETAILED DESCRIPTION

[0013] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings. Example

[0014] Reference Figure 1 A finishing rolling guide device for preventing the edge of a hot-rolled strip from being scratched comprises a vertical roller device 2 and a cooling device 3. The vertical roller device 2 is arranged at the entrance of the guide device 1, and the cooling device 3 is arranged on both sides of the vertical roller device 2.

[0015] The vertical roller device 2 comprises a cylindrical small vertical roller 2-1, the diameter of the small vertical roller 2-1 is 200 mm and the height is 300 mm. The upper and lower shaft heads of the small vertical roller 2-1 are fixed to the main body of the guide device 1 through a pressure plate 2-2, and the pressure plate 2-2 is connected to the main body of the guide device 1 through bolts.

[0016] The cooling device 3 includes a cooling manifold 3-1, the diameter of the cooling manifold 3-1 is 20 mm, the length is 400 mm, the water source of the cooling manifold 3-1 is 10 kg of rolling mill roll cooling water, the cooling manifold 3-1 is arranged on one side of the vertical roll device 2, and is parallel to the axis of the vertical roll device 2, and two fan-shaped nozzles 3-2 are provided on the cooling manifold 3-1, and the distance between the two nozzles 3-2 and the two ends of the cooling manifold 2-1 is 100 mm.

[0017] After the above-mentioned finishing rolling guide device is installed on the hot rolling 1700 production line, its contact surface with the strip steel remains smooth for a long time, does not damage the edge of the strip steel, and can be used continuously online for 18-20 days.

[0018] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A finishing rolling guide device for preventing the edge of a hot-rolled strip from being scratched, characterized in that: The utility model comprises a vertical roller device and a cooling device. The vertical roller device is arranged at the entrance of the guide device, and the cooling device is arranged on both sides of the vertical roller device.

2. A finishing rolling guide device for preventing the edge of a hot-rolled steel strip from being scratched according to claim 1, characterized in that: The vertical roller device comprises a cylindrical small vertical roller, and the upper and lower shaft heads of the small vertical roller are fixed on the main body of the guide device through a pressing plate.

3. A finishing rolling guide device for preventing hot rolled strip edge from being scratched according to claim 2, characterized in that: The pressing plate is connected to the main body of the guide device through bolts.

4. A finishing rolling guide device for preventing hot rolled strip edge scratches according to claim 1, characterized in that: The cooling device comprises a cooling header, which is arranged on one side of the vertical roller device and is parallel to the axis of the vertical roller device.

5. A finishing rolling guide device for preventing the edge of a hot-rolled steel strip from being scratched according to claim 4, characterized in that: The cooling header is provided with a nozzle.

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