Automatic speed control rapid cooling device

Abstract

The utility model discloses an automatic control speed quick cooling device, including control speed quick cooling tank and open in the feed port and the discharge port of control speed quick cooling tank two ends, control speed quick cooling tank is equipped with control speed quick cooling mechanism, and control speed quick cooling mechanism includes a plurality of conveying roller, a group of synchronous air cylinder, push board, a group of mounting bracket, a group of guide roller, lower cooling nozzle group, upper cooling nozzle group and a group of pyrometer. The utility model has the beneficial effect that through being equipped with control speed quick cooling mechanism in control speed quick cooling tank, immediately carries out quick cooling to the steel sheet after rolling, makes the steel sheet quick cooling to the phase change temperature 800 about, prevents the growth of austenite grain before phase change, then, reduces water flow at 800, reduces the cooling speed, controls the cooling speed below 15 / s, avoids the austenite to martensite transformation to reduce the steel sheet performance, and the cooling is to 500 air cooling, reaches control speed quick cooling purpose.

Description

Technical Field

[0001] This utility model relates to the field of steel plate controlled cooling technology, specifically an automatic speed-controlled rapid cooling device. Background Technology

[0002] Controlled rolling and controlled cooling are important technologies in steel production. By controlling the temperature changes of steel during the rolling process and the process parameters of the cooling process after rolling, fine and uniform phase transformation structures can be obtained, thereby obtaining excellent products with good strength, plasticity and toughness.

[0003] In terms of cooling rate, water cooling or air cooling is generally used. If the cooling rate of the steel plate is too slow, the proeutectoid ferrite will grow coarse and the pearlite will also be coarse and lamellar, resulting in a reduction in strength and toughness. However, if the cooling rate is too fast, a small amount of bainite, martensite and other structures will appear, affecting the performance of the steel plate. Utility Model Content

[0004] To address the above deficiencies, this utility model provides an automatic speed-controlled rapid cooling device to solve the problem of controlling the speed of rapid cooling of steel plates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An automatic speed-controlled rapid cooling device includes a speed-controlled rapid cooling box and an inlet and an outlet at both ends of the speed-controlled rapid cooling box. The speed-controlled rapid cooling box is equipped with a speed-controlled rapid cooling mechanism.

[0007] The speed-controlled rapid cooling mechanism includes several conveying rollers, a set of synchronous cylinders, a push plate, a set of mounting brackets, a set of guide rollers, a lower cooling nozzle assembly, an upper cooling nozzle assembly, and a set of pyrometers. Several conveying rollers are movably installed inside the speed-controlled rapid cooling box. A set of synchronous cylinders is installed on both sides of the upper end of the speed-controlled rapid cooling box, and its telescopic ends are movably inserted into the speed-controlled rapid cooling box. The push plate is installed on the telescopic ends of a set of synchronous cylinders. A set of mounting brackets is installed on both sides of the bottom of the push plate. A set of guide rollers is movably installed inside a set of mounting brackets. The lower cooling nozzle assembly is installed at the bottom of the speed-controlled rapid cooling box. The upper cooling nozzle assembly is installed at the bottom of the push plate and corresponds to the position of the lower cooling nozzle assembly. A set of pyrometers is installed at the inlet and outlet at both ends of the speed-controlled rapid cooling box.

[0008] Furthermore, a drive gear is installed at the front end of one of the conveyor rollers;

[0009] A set of transmission gear one that meshes with the drive gear is movably installed on the front surface of the speed-controlled rapid cooling box. A set of transmission gear one is movably installed with transmission gear two through a connecting rod one.

[0010] A set of guide rollers are each equipped with a driven gear at the front end, and the driven gears are hinged to a set of transmission gears via a connecting rod.

[0011] Furthermore, the front and rear surfaces of the speed-controlled rapid cooling box are each provided with a set of opposing strip-shaped holes, and the two ends of a set of guide rollers are respectively slidably installed in the corresponding strip-shaped holes via sliders.

[0012] Furthermore, an electric motor is installed at the rear end of the speed-controlled rapid cooling box, the rotating end of the electric motor is connected to the rear end of the left conveyor roller, and adjacent sets of conveyor rollers are connected by a transmission chain.

[0013] Furthermore, the lower cooling nozzle group and the upper cooling nozzle group are respectively connected to the external water inlet pipe, and the lower cooling nozzle group is staggered with several conveying rollers.

[0014] Furthermore, a drain pipe is located on the bottom right side of the speed-controlled rapid cooling box.

[0015] This utility model provides an automatic speed-controlled rapid cooling device with the following beneficial effects: by setting up a speed-controlled rapid cooling mechanism in the speed-controlled rapid cooling box, the rolled steel plate is immediately rapidly cooled to about 800°C, the phase transformation temperature, to prevent the growth of austenite grains before phase transformation. Then, at 800°C, the water flow rate is reduced to lower the cooling rate, which is controlled to below 15 / s to avoid the transformation of austenite to martensite and thus reduce the performance of the steel plate. After cooling to 500°C, air cooling is performed to achieve the purpose of speed-controlled rapid cooling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an automatic speed-controlled rapid cooling device according to the present invention.

[0017] Figure 2 This is a schematic diagram of the transmission of several conveyor rollers in this utility model.

[0018] Figure 3 This is a front view of the speed-controlled rapid cooling box described in this utility model.

[0019] Figure 4 This is a schematic diagram of the strip hole of this utility model.

[0020] In the diagram: 1. Speed-controlled rapid cooling box; 2. Feed inlet; 3. Discharge outlet; 4. Conveyor roller; 5. Synchronous cylinder; 6. Push plate; 7. Mounting frame; 8. Guide roller; 9. Lower cooling nozzle assembly; 10. Upper cooling nozzle assembly; 11. High temperature gauge; 12. Drive gear; 13. Transmission gear one; 14. Connecting rod one; 15. Transmission gear two; 16. Driven gear; 17. Connecting rod two; 18. Strip hole; 19. Slider; 20. Motor; 21. Transmission chain; 22. Water inlet pipe; 23. Drain pipe. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] Please see Figures 1 to 4 As shown, an automatic speed-controlled rapid cooling device includes a speed-controlled rapid cooling box 1 and an inlet 2 and an outlet 3 at both ends of the speed-controlled rapid cooling box 1. A speed-controlled rapid cooling mechanism is installed inside the speed-controlled rapid cooling box 1. The speed-controlled rapid cooling mechanism includes several conveying rollers 4, a set of synchronous cylinders 5, a push plate 6, a set of mounting brackets 7, a set of guide rollers 8, a lower cooling nozzle group 9, an upper cooling nozzle group 10, and a set of pyrometers 11. The several conveying rollers 4 are movably installed inside the speed-controlled rapid cooling box 1, and the set of synchronous cylinders 5 is installed in the speed-controlled rapid cooling box 1. The upper two sides of the box 1, with the telescopic ends movably inserted into the speed-controlled rapid cooling box 1, the push plate 6 is installed on the telescopic ends of a set of synchronous cylinders 5, a set of mounting brackets 7 is installed on the bottom two sides of the push plate 6, a set of guide rollers 8 is movably installed in a set of mounting brackets 7, the lower cooling nozzle group 9 is installed at the bottom of the speed-controlled rapid cooling box 1, the upper cooling nozzle group 10 is installed at the bottom of the push plate 6 and corresponds to the position of the lower cooling nozzle group 9, and a set of high temperature gauges 11 is installed at the inlet 2 and outlet 3 at both ends of the speed-controlled rapid cooling box 1.

[0023] In this embodiment, the rolled steel plate enters the speed-controlled rapid cooling box 1 through the feed port 2. Several conveying rollers 4 convey the steel plate. A set of synchronous cylinders 5 extends their telescopic ends, driving the push plate 6 to descend, so that a set of guide rollers 8 are in contact with the upper surface of the steel plate, playing a guiding role. The lower cooling nozzle group 9 and the upper cooling nozzle group 10 work simultaneously to water cool both sides of the steel plate. A set of pyrometers 11 is used to detect the temperature at the feed port 2 and the discharge port 3 of the speed-controlled rapid cooling box 1. When the steel plate is rapidly cooled to about 800°C, the growth of austenite grains before the phase transformation is prevented. Then, at 800°C, the water flow rate is reduced to lower the cooling rate, controlling the cooling rate to below 15 / s to avoid the transformation of austenite to martensite, thereby reducing the performance of the steel plate. When cooled to 500°C, the lower cooling nozzle group 9 and the upper cooling nozzle group 10 stop working and air cooling is performed to achieve the purpose of speed-controlled rapid cooling. The cooled steel plate can be sent out through the discharge port 3.

[0024] In some embodiments, a set of conveying rollers 4 are respectively equipped with a drive gear 12 at their front ends; a set of transmission gears 13 that mesh with the drive gear 12 are movably installed on the front surface of the speed control rapid cooling box 1, and a set of transmission gears 13 are respectively movably equipped with transmission gears 15 through a connecting rod 14; a set of guide rollers 8 are respectively equipped with driven gears 16 at their front ends, and the set of transmission gears 15 and driven gears 16 are hinged to each other through a connecting rod 17.

[0025] The second transmission gear 15 meshes with the corresponding first transmission gear 13 and driven gear 16. A set of guide rollers 8 moves downward. The driven gear 16 drives the second transmission gear 15 to deflect through the connecting rod 17. It always maintains meshing with the driving gear 12, the first transmission gear 13, the second transmission gear 15 and the driven gear 16, which can drive the set of guide rollers 8 to rotate in the opposite direction, which facilitates the conveying of steel plates.

[0026] In some embodiments, the front and rear surfaces of the speed-controlled rapid cooling box 1 are respectively provided with a set of opposite strip holes 18. The two ends of a set of guide rollers 8 are respectively slidably installed in the corresponding strip holes 18 via sliders 19. The set of guide rollers 8 are movably inserted into the corresponding sliders 19 via fastening bearings, so as to facilitate the lifting and lowering movement of the set of guide rollers 8.

[0027] In some embodiments, a motor 20 is installed at the rear end of the speed-controlled rapid cooling box 1. The rotating end of the motor 20 is connected to the rear end of the left conveyor roller 4, and adjacent sets of conveyor rollers 4 are connected by a transmission chain 21 to facilitate driving several conveyor rollers 4 to rotate.

[0028] In some embodiments, the lower cooling nozzle group 9 and the upper cooling nozzle group 10 are respectively connected to the external water inlet pipe 22, and the lower cooling nozzle group 9 is staggered with a plurality of conveying rollers 4.

[0029] In some embodiments, a drain pipe 23 is provided on the bottom right side of the speed-controlled rapid cooling box 1, through which water after use can be discharged.

[0030] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. An automatic speed-controlled rapid cooling device, comprising a speed-controlled rapid cooling chamber (1) and an inlet (2) and an outlet (3) located at both ends of the speed-controlled rapid cooling chamber (1), characterized in that, The speed-controlled rapid cooling box (1) is equipped with a speed-controlled rapid cooling mechanism; The speed-controlled rapid cooling mechanism includes several conveying rollers (4), a set of synchronous cylinders (5), a push plate (6), a set of mounting brackets (7), a set of guide rollers (8), a lower cooling nozzle group (9), an upper cooling nozzle group (10), and a set of pyrometers (11). Several conveying rollers (4) are movably installed inside the speed-controlled rapid cooling box (1). A set of synchronous cylinders (5) is installed on both sides of the upper end of the speed-controlled rapid cooling box (1), and the telescopic ends are movably inserted into the speed-controlled rapid cooling box (1). The push plate (6) is installed on... On the telescopic end of a set of synchronous cylinders (5), a set of mounting brackets (7) are installed on both sides of the bottom of the push plate (6), a set of guide rollers (8) are movably installed in a set of mounting brackets (7), the lower cooling nozzle group (9) is installed at the bottom of the speed-controlled rapid cooling box (1), the upper cooling nozzle group (10) is installed at the bottom of the push plate (6) and corresponds to the position of the lower cooling nozzle group (9), and a set of high temperature gauges (11) are installed at the inlet (2) and outlet (3) at both ends of the speed-controlled rapid cooling box (1).

2. The automatic speed-controlled rapid cooling device according to claim 1, characterized in that, One of the conveyor rollers (4) has a drive gear (12) installed at the front end. The front surface of the speed-controlled rapid cooling box (1) is movably mounted with a set of transmission gear one (13) that meshes with the drive gear (12), and a set of transmission gear one (13) is movably mounted with transmission gear two (15) through a connecting rod one (14). A set of guide rollers (8) are respectively equipped with driven gears (16) at their front ends, and are hinged to a set of transmission gears (15) and driven gears (16) via a connecting rod (17).

3. The automatic speed-controlled rapid cooling device according to claim 2, characterized in that, The front and rear surfaces of the speed-controlled rapid cooling box (1) are respectively provided with a set of opposite strip holes (18), and the two ends of a set of guide rollers (8) are respectively slidably installed in the corresponding strip holes (18) by sliders (19).

4. The automatic speed-controlled rapid cooling device according to claim 1, characterized in that, The speed-controlled rapid cooling box (1) is equipped with a motor (20) at the rear end. The rotating end of the motor (20) is connected to the rear end of the left conveyor roller (4), and adjacent sets of conveyor rollers (4) are connected by a transmission chain (21).

5. The automatic speed-controlled rapid cooling device according to claim 1, characterized in that, The lower cooling nozzle group (9) and the upper cooling nozzle group (10) are respectively connected to the external water inlet pipe (22), and the lower cooling nozzle group (9) is staggered with several conveying rollers (4).

6. The automatic speed-controlled rapid cooling device according to claim 1, characterized in that, The speed-controlled rapid cooling box (1) has a drain pipe (23) on the bottom right side.

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