Bearing steel air cooling device capable of reducing network carbides

Abstract

The utility model relates to the field of steel cooling equipment, in particular to a bearing steel air cooling device capable of reducing network carbides, which comprises a rack, a conveying roller bed horizontally arranged at the upper end of the rack, a plurality of fans uniformly arranged below the conveying roller bed, each fan comprises an air outlet, the air outlets obliquely extend upwards, and a group of heat preservation components are arranged on the side surface of the conveying roller bed. The heat preservation assembly comprises a heat preservation cover and an opening and closing mechanism connected with the heat preservation cover. According to the utility model, the temperature of the steel is rapidly reduced by using large air volume, so that the temperature of the steel wire rapidly passes through a temperature interval of 850-700 DEG C, the precipitation of network carbide is reduced, after the temperature of the steel is reduced to be below 700 DEG C, the heat preservation cover is covered on the conveying roller way, and the fan is closed for slow cooling, so that the internal stress of the coiled coil is reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel cooling equipment, in particular to a bearing steel air cooling device for reducing network carbides. Background Art

[0002] Network carbide is a kind of structural defect in steel. The reason for the formation of network carbide is that the temperature after hot working is too high and the cooling process is too slow, which causes the steel to be in the temperature range of 850-700℃ for a long time, which will lead to the precipitation of network carbide. In order to reduce the precipitation of network carbide, it is necessary to minimize the time that the steel is in the temperature range of 850-700℃, and the steel needs to be cooled quickly. Therefore, it is particularly necessary to develop an air cooling device that can quickly cool the steel, reduce the time that the steel is in the temperature range of 850-700℃, and reduce the precipitation of network carbide. Summary of the Invention

[0003] The utility model aims to provide a bearing steel air cooling device for reducing network carbides, which has the advantages of reducing the time the steel is kept in the temperature range of 850-700°C and reducing the precipitation of network carbides.

[0004] The technical solutions adopted are as follows:

[0005] A bearing steel air cooling device for reducing network carbides includes a frame, a conveyor roller is horizontally arranged on the upper end of the frame, and multiple fans are evenly arranged below the conveyor roller. The fans include air outlets that extend obliquely upward. Multiple groups of insulation components are arranged on the side of the conveyor roller, and the insulation components include insulation covers and opening and closing mechanisms connected to the insulation covers.

[0006] Preferably, a plurality of infrared temperature sensors are arranged at intervals above the roller conveyor.

[0007] Preferably, the opening and closing mechanism is a bracket, a rotating shaft is horizontally arranged on the bracket, a connecting beam is fixedly arranged on the upper end of the rotating shaft, the connecting beam is perpendicular to the rotating shaft, one end of the connecting beam is fixedly connected to the thermal insulation cover, and the lower end of the bracket is rotatably connected to a hydraulic telescopic rod, and the upper end of the hydraulic telescopic rod is rotatably connected to the other end of the connecting beam.

[0008] Preferably, the fan below the front end of the conveyor roller is an axial flow fan, and the fan below the middle and rear section of the conveyor roller is a centrifugal fan.

[0009] Preferably, the conveyor roller is a roller-type delayed transport line.

[0010] Compared with the existing technology, the beneficial effects are:

[0011] 1. In the utility model, the conveyor roller conveys steel, and the fan below the conveyor roller blows air downward, using a large air volume to quickly reduce the temperature of the steel, so that the temperature of the steel wire quickly passes through the temperature range of 850-700℃, reducing the precipitation of network carbides. After the steel temperature drops below 700℃, the insulation cover is covered on the conveyor roller, and the fan is turned off for slow cooling to reduce the internal stress of the steel.

[0012] 2. The mid-infrared temperature sensor of the present invention monitors the temperature of the steel to obtain the temperature of the steel at various locations on the conveyor roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front side three-dimensional structural diagram of a bearing steel air cooling device for reducing network carbides in the utility model.

[0014] Figure 2 This is a schematic diagram of the rear three-dimensional structure of a bearing steel air cooling device for reducing network carbides in the utility model.

[0015] Figure 3 This is a top view of the structure of a bearing steel air cooling device for reducing network carbides in the utility model.

[0016] In the figure: 1. Frame; 2. Conveyor roller; 3. Fan; 4. Infrared temperature sensor; 5. Bracket; 6. Rotating shaft; 7. Connecting beam; 8. Hydraulic telescopic rod; 9. Insulation cover. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to specific embodiments. Figures 1 to 3 As shown:

[0018] Example 1: A bearing steel air cooling device for reducing network carbides includes a frame 1, a conveyor roller 2 is horizontally arranged on the upper end of the frame 1, and a plurality of fans 3 are evenly arranged below the conveyor roller 2. The fan 3 includes an air outlet, and the air outlet is inclined upward. The plurality of fans 3 are arranged below the conveyor roller 2. The air generated by the fan 3 blows toward the conveyor roller 2, thereby quickly cooling the steel on the conveyor roller 2, quickly reducing the temperature of the steel, reducing the time the steel is in the temperature range of 850-700℃, reducing the precipitation of network carbides, and improving the performance of the steel.

[0019] Multiple groups of insulation components are set on the side of the conveyor roller 2. The insulation components include an insulation cover 9 and an opening and closing mechanism connected to the insulation cover 9. The opening and closing mechanism controls the rotation of the insulation cover 9 and controls the insulation cover 9 to cover the conveyor roller 2 or lift it up, thereby controlling the heat dissipation speed of the steel. When the steel enters the conveyor roller 2, the insulation cover 9 is opened and the fan 3 is started to quickly dissipate heat for the steel. The steel is conveyed along the conveyor roller 2. When the temperature of the steel drops to 700 degrees, the insulation cover 9 is covered and the fan 3 is turned off to slowly cool the steel to reduce the stress inside the steel.

[0020] Example 2: A bearing steel air cooling device for reducing network carbides includes a frame 1, a conveyor roller 2 is horizontally arranged on the upper end of the frame 1, the conveyor roller 2 is a roller-type delayed transport line, and multiple fans 3 are evenly arranged below the conveyor roller 2. The fan 3 below the fan 3 at the front end of the conveyor roller 2 is an axial flow fan 3, and the fan 3 below the middle and rear section of the conveyor roller 2 is a centrifugal fan 3.

[0021] The fan 3 includes an air outlet, which is inclined upward. Multiple fans 3 are arranged below the conveyor roller 2. The air generated by the fan 3 is blown toward the conveyor roller 2, thereby quickly cooling the steel on the conveyor roller 2, quickly lowering the temperature of the steel, reducing the time the steel is in the temperature range of 850-700°C, reducing the precipitation of network carbides, and improving the performance of the steel.

[0022] A plurality of infrared temperature sensors 4 are arranged at intervals above the conveyor roller 2. The infrared temperature sensors 4 are used to monitor the temperature of the steel at various locations on the conveyor roller 2.

[0023] Multiple groups of insulation components are arranged on the side of the conveyor roller 2. The insulation components include an insulation cover 9 and an opening and closing mechanism connected to the insulation cover 9. The opening and closing mechanism is a bracket 5. A rotating shaft 6 is arranged on the bracket 5 for horizontal rotation. A connecting beam 7 is fixedly arranged on the upper end of the rotating shaft 6. The connecting beam 7 is perpendicular to the rotating shaft 6. One end of the connecting beam 7 is fixedly connected to the insulation cover 9. The lower end of the bracket 5 is rotatably connected to a hydraulic telescopic rod 8. The upper end of the hydraulic telescopic rod 8 is rotatably connected to the other end of the connecting beam 7. The opening and closing mechanism controls the rotation of the insulation cover 9.

[0024] The heat preservation cover 9 is controlled to cover the conveyor roller 2 or lift it up to control the heat dissipation speed of the steel. When the steel enters the conveyor roller 2, the heat preservation cover 9 is opened and the fan 3 is started to quickly dissipate heat from the steel. The steel is transported along the conveyor roller 2. When the temperature of the steel drops to 700 degrees, the heat preservation cover 9 is covered and the fan 3 is turned off to slowly cool the steel to reduce the stress inside the steel.

[0025] The specific working process is as follows: start the conveyor roller 2 and the fan 3. After the steel is conveyed to the conveyor roller 2, the wind blown by the fan 3 is used to quickly cool the steel, so that the temperature of the steel wire quickly passes through the temperature range of 850-700℃, reducing the precipitation of network carbides. As the steel moves and the fan 3 cools, the infrared temperature sensors 4 at various locations are used to monitor the temperature of the steel at various locations. When the temperature of the steel drops to 700 degrees, turn off the fan 3 downstream of the steel here, and cover the corresponding thermal insulation cover 9 to slowly cool the steel below 700 degrees to reduce the internal stress of the steel.

[0026] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A bearing steel air cooling device for reducing network carbides, characterized by: The invention comprises a frame (1), a conveying roller (2) is horizontally arranged on the upper end of the frame (1), a plurality of fans (3) are evenly arranged below the conveying roller (2), the fans (3) include air outlets, and the air outlets extend obliquely upward. A plurality of groups of heat-insulating components are arranged on the side of the conveying roller (2), and the heat-insulating components include a heat-insulating cover (9) and an opening and closing mechanism connected to the heat-insulating cover (9).

2. The bearing steel air cooling device for reducing network carbides according to claim 1, characterized in that: A plurality of infrared temperature sensors (4) are arranged at intervals above the roller conveyor.

3. The bearing steel air cooling device for reducing network carbides according to claim 1, characterized in that: The opening and closing mechanism is a bracket (5), a rotating shaft (6) is horizontally rotatably provided on the bracket (5), a connecting beam (7) is fixedly provided on the upper end of the rotating shaft (6), the connecting beam (7) is perpendicular to the rotating shaft (6), one end of the connecting beam (7) is fixedly connected to the heat preservation cover (9), and a hydraulic telescopic rod (8) is rotatably connected to the lower end of the bracket (5), and the upper end of the hydraulic telescopic rod (8) is rotatably connected to the other end of the connecting beam (7).

4. The bearing steel air cooling device for reducing network carbides according to claim 1, characterized in that: The fan (3) below the front end of the conveying roller (2) is an axial flow fan (3), and the fan (3) below the middle and rear section of the conveying roller (2) is a centrifugal fan (3).

5. The bearing steel air cooling device for reducing network carbides according to claim 1, characterized in that: The conveying roller (2) is a roller-type delayed transport line.

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