Water cooling device after intermediate rolling of continuous casting billet

Abstract

The utility model relates to the technical field of metallurgical rolling, in particular to a continuous casting billet after-intermediate-rolling water cooling device which comprises a device body, a conveying roller set is arranged below the device body and conveys a continuous casting billet from the feeding end to the discharging end of the device body, and a cooling cavity is formed in the device body. A water cooling mechanism and an air cooling mechanism are arranged in the device body; the water cooling mechanism is positioned above the cooling cavity; the water cooling mechanism and the air cooling mechanism are arranged and combined for cooling, on one hand, more heat can be absorbed due to the fact that the specific heat capacity of water is higher, on the other hand, the heat is taken away through air cooling in contact with the continuous casting billet, and oxidation caused by direct contact of water with the continuous casting billet is avoided; the problems that in an existing cooling mode after intermediate rolling, due to the fact that the cooling efficiency of air cooling is low, a longer cooling interval is often needed, and although the cooling efficiency of a water cooling mode is high, the surface of a continuous casting billet is prone to being oxidized rapidly are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical rolling, in particular to a water cooling device for continuous casting billets after rolling. Background Art

[0002] Intermediate rolling is the process of processing rough-rolled blanks into thinner and wider plates. Intermediate rolling uses relatively small rollers, requiring higher rolling forces to achieve the desired reduction ratio. Intermediate rolling results in a smoother surface finish and higher dimensional accuracy, making it a crucial step in the production of high-precision sheet metal.

[0003] In order to have good pre-processing conditions for subsequent finishing rolling, the continuous casting billet is often cooled after intermediate rolling to release its stress. Common cooling methods include air cooling or water cooling. Air cooling often requires a longer cooling range due to its low cooling efficiency, and water cooling has a high cooling efficiency but is prone to rapid oxidation of the surface of the continuous casting billet. Utility Model Content

[0004] In view of the above problems, the utility model provides a water cooling device for continuous casting billets after rolling.

[0005] The technical solution adopted is a water cooling device for continuous casting billets after rolling, comprising a device body, a conveying roller group arranged below the device body, and the conveying roller group conveys the continuous casting billets from the feeding end to the discharging end of the device body, wherein a cooling cavity is arranged in the device body, and a water cooling mechanism and an air cooling mechanism are arranged in the device body;

[0006] The water cooling mechanism is located above the cooling cavity;

[0007] The air cooling mechanism can guide air flow into the cooling cavity.

[0008] Optionally, the water cooling mechanism includes a water cooling box, a water inlet branch pipe, and a water outlet branch pipe;

[0009] The water cooling box is arranged in the body and is located above the cooling cavity;

[0010] The water inlet branch pipe and the water outlet branch pipe are connected to both ends of the water cooling box respectively.

[0011] Optionally, the number of water cooling boxes matches the number of conveyor roller groups and is located above the conveyor roller groups. The water inlet branch pipe is connected to the water inlet main pipe, and the water outlet branch pipe is connected to the water outlet main pipe.

[0012] Optionally, the connection between the water inlet branch pipe and the water cooling box is close to the discharge end of the device body, and the connection between the water outlet branch pipe and the water cooling box is close to the feed end of the device body.

[0013] Optionally, the air cooling mechanism includes an air inlet pipe and an air outlet pipe, and the air inlet pipe is arranged at the feed end of the device body, and the air outlet pipe is arranged at the discharge end of the device body. A baffle is also provided at the discharge end of the device body, and the conveying roller group can pass through the baffle.

[0014] Optionally, the air cooling mechanism further includes an air guide component, and the air guide component is arranged in the cooling cavity and close to the air inlet pipe. The air guide component is a triangular prism structure, and the conical surface faces the air inlet pipe.

[0015] The benefits of this utility model include:

[0016] 1. By setting up a water cooling mechanism and an air cooling mechanism, the two are combined to cool down. On the one hand, water has a higher specific heat capacity and can absorb more heat. On the other hand, the heat is taken away by the contact between the air cooling and the continuous casting billet, avoiding direct contact of water with the continuous casting billet to cause oxidation.

[0017] 2. It solves the problem that in the existing cooling method after intermediate rolling, air cooling often requires a longer cooling range due to its low cooling efficiency, while water cooling has a high cooling efficiency but is prone to rapid oxidation of the surface of the continuous casting billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a water cooling device after rolling of a continuous casting billet;

[0019] Figure 2 Schematic diagram of the water cooling chamber structure;

[0020] Figure 3 Schematic diagram of the air cooling mechanism structure;

[0021] Figure 4 This is a schematic diagram of the structure of the feeding end of the device body;

[0022] Figure 5 It is a structural diagram of the discharge end of the device body.

[0023] The figures are as follows: 1 is the device body, 2 is the water inlet main pipe, 3 is the water outlet main pipe, 4 is the water inlet branch pipe, 5 is the water outlet branch pipe, 6 is the conveying roller group, 7 is the air inlet pipe, 8 is the air outlet pipe, 9 is the water cooling box, 10 is the air guide component, 11 is the cooling chamber, 12 is the continuous casting billet, and 13 is the baffle. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific implementations, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined unless they conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0026] like Figures 1 to 5 As shown, a post-rolling water cooling device for continuous casting slabs includes a device body 1, a conveying roller group 6 is provided below the device body 1, and the conveying roller group 6 conveys the continuous casting slab 12 from the feeding end to the discharging end of the device body 1, wherein a cooling chamber 11 is provided in the device body 1, and a water cooling mechanism and an air cooling mechanism are provided in the device body 1;

[0027] The water cooling mechanism is located above the cooling chamber 11;

[0028] The air cooling mechanism can guide airflow into the cooling cavity 11 .

[0029] The purpose of this design is to combine water and air cooling mechanisms for cooling. This not only takes advantage of water's higher specific heat capacity, allowing it to absorb more heat, but also removes heat through air cooling, preventing oxidation caused by direct water contact. This solves the problem of existing post-intermediate rolling cooling methods: air cooling, due to its low cooling efficiency, often requires a longer cooling range, while water cooling, while highly efficient, can easily lead to rapid oxidation of the continuous casting surface.

[0030] In this embodiment, a specific structure of a water cooling mechanism is provided, which includes a water cooling box 9, a water inlet branch pipe 4 and a water outlet branch pipe 5;

[0031] The water cooling box 9 is arranged in the body 1 and is located above the cooling cavity 11;

[0032] The water inlet branch pipe 4 and the water outlet branch pipe 5 are connected to both ends of the water cooling box 9 respectively;

[0033] The number of water cooling boxes 9 matches the number of conveyor roller groups 6 and is located above the conveyor roller groups 6. The water inlet branch pipe 4 is connected to the water inlet main pipe 2, and the water outlet branch pipe 5 is connected to the water outlet main pipe 3.

[0034] The connection between the water inlet branch pipe 4 and the water cooling box 9 is close to the discharge end of the device body 1, and the connection between the water outlet branch pipe 5 and the water cooling box 9 is close to the feed end of the device body 1.

[0035] The purpose of this design is to introduce the coolant or cooling water from the water inlet main pipe into the water cooling box through the water inlet branch pipe, and then discharge it through the water outlet main pipe through the water outlet branch pipe, and repeat this process after cooling and standing.

[0036] At the same time, since there is a cooling chamber under the water cooling box, the wind introduced into it can complete heat exchange with it, so that the water absorbs part of the heat energy, so that the water will not directly contact the continuous casting billet.

[0037] Furthermore, the flow direction of the coolant or cooling water is opposite to the conveying direction of the continuous casting billet, which can increase the cooling efficiency to a certain extent.

[0038] In this embodiment, a specific structure of an air cooling mechanism is also provided, including an air inlet pipe 7 and an air outlet pipe 8, and the air inlet pipe 7 is arranged at the feed end of the device body 1, and the air outlet pipe 8 is arranged at the discharge end of the device body 1, and a baffle 13 is also provided at the discharge end of the device body 1, and the conveying roller group 6 can pass through the baffle 13. The air cooling mechanism also includes an air guide component 10, and the air guide component 10 is arranged in the cooling chamber 11 and close to the air inlet pipe 7. The air guide component 10 has a triangular prism structure, and the conical surface faces the air inlet pipe 7.

[0039] The purpose of this design is that since coolant or cooling water will affect the surface quality of the continuous casting billet, and other cooling methods are more expensive, air cooling is used to cool the continuous casting billet after intermediate rolling. A stable airflow is formed through the air inlet and outlet pipes. The airflow can take away the temperature of the continuous casting billet surface and interact with the water cooling box for heat.

[0040] Furthermore, by providing an air guide component with a triangular prism structure, when the airflow delivered by the air inlet pipe contacts the air guide component, it will move toward both sides, so that the airflow is more evenly distributed in the cooling cavity.

[0041] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A post-rolling water cooling device for continuous casting billets, comprising a device body (1), a conveying roller group (6) being provided below the device body (1), and the conveying roller group (6) conveying the continuous casting billets (12) from the feeding end to the discharging end of the device body (1), characterized in that: A cooling chamber (11) is provided in the device body (1), and a water cooling mechanism and an air cooling mechanism are provided in the device body (1); The water cooling mechanism is located above the cooling chamber (11); The air cooling mechanism can guide air flow into the cooling cavity (11).

2. The water cooling device after continuous casting billet rolling according to claim 1, characterized in that: The water cooling mechanism comprises a water cooling box (9), a water inlet branch pipe (4) and a water outlet branch pipe (5); The water cooling box (9) is arranged in the main body (1) and is located above the cooling cavity (11); The water inlet branch pipe (4) and the water outlet branch pipe (5) are respectively connected to the two ends of the water cooling box (9).

3. The water cooling device for continuous casting after rolling according to claim 2, characterized in that: The number of the water cooling boxes (9) matches the number of the conveying roller groups (6) and is located above the conveying roller groups (6). The water inlet branch pipe (4) is connected to the water inlet main pipe (2), and the water outlet branch pipe (5) is connected to the water outlet main pipe (3).

4. The water cooling device for continuous casting after rolling according to claim 2, characterized in that: The connection between the water inlet branch pipe (4) and the water cooling box (9) is close to the discharge end of the device body (1), and the connection between the water outlet branch pipe (5) and the water cooling box (9) is close to the feed end of the device body (1).

5. The water cooling device for continuous casting after rolling according to claim 1, characterized in that: The air cooling mechanism comprises an air inlet pipe (7) and an air outlet pipe (8), wherein the air inlet pipe (7) is arranged at the feed end of the device body (1), and the air outlet pipe (8) is arranged at the discharge end of the device body (1). A baffle (13) is also arranged at the discharge end of the device body (1), and the conveying roller group (6) can pass through the baffle (13).

6. The water cooling device for continuous casting after rolling according to claim 5, characterized in that: The air cooling mechanism further includes an air guide component (10), and the air guide component (10) is arranged in the cooling cavity (11) and close to the air inlet pipe (7), and the air guide component (10) is a triangular prism structure, with the conical surface facing the air inlet pipe (7).

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