A device for controlling the slow cooling of continuous casting

Abstract

The utility model relates to the field of continuous casting slow cooling technology discloses a kind of for continuous casting slow cooling regulation and control device, including the slow cooling pit of top open setting, slow cooling pit top is equipped with cover plate, slow cooling pit is equipped with heat preservation layer and protective layer in turn from outside to inside, slow cooling pit one side is equipped with regulation and control component, the other side is equipped with export pipe, cover plate includes the frame cooperation with slow cooling pit top, frame inboard is equipped with several baffle and the heat dissipation adjusting component that can drive baffle adjustment heat dissipation amount.The utility model has the advantages compared with prior art: it is convenient to heat or auxiliary heat dissipation to slow cooling pit, it is convenient to evenly adjust baffle opening, improve slow cooling pit in heat dissipation uniformity.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting slow cooling technology, specifically to a device for controlling slow cooling in continuous casting. Background Technology

[0002] High-carbon materials such as cast iron are prone to forming hard and brittle white iron structure when rapidly cooled, which increases the difficulty of processing and the risk of cracking; slow cooling is a process measure in the metallurgical and heat treatment fields to improve material properties by controlling the cooling rate.

[0003] Existing methods for slow cooling operations include loading steel or slag into a slow cooling pit for natural cooling; however, the initial temperature in the slow cooling pit is low, and direct introduction of the continuously cast billet into the slow cooling pit with a large temperature difference will generate internal stress; alternatively, heat dissipation can be achieved by opening the cover plate to coordinate with the control, but the cover plate is mostly an integral structure, and partial opening requires a large area and causes uneven heat dissipation in the slow cooling pit. Utility Model Content

[0004] The technical problem this invention aims to solve is that the initial temperature in the slow cooling pit is low, and the direct introduction of the continuously cast billet generates internal stress; or the cover plate is mostly an integral structure, and partial opening requires a large area, which also causes uneven heat dissipation in the slow cooling pit.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a slow cooling control device for continuous casting, including a slow cooling pit with an open top, a cover plate on the top of the slow cooling pit, an insulation layer and a protective layer arranged sequentially from the outside to the inside of the slow cooling pit, a control component on one side of the slow cooling pit and an outlet pipe on the other side, the cover plate including a frame that cooperates with the top of the slow cooling pit, a number of baffles and a heat dissipation control component that can drive the baffles to adjust the heat dissipation.

[0006] Furthermore, the control component includes a three-way pipe, one end of which is provided with an inlet main pipe, and the inlet main pipe is provided with several inlet branch pipes that can extend into the slow cooling pit. The other end is connected to a warm pipe, and the remaining end is connected to a cold pipe.

[0007] Furthermore, the top of the slow cooling pit is inclined, and the bottom of the frame is provided with an annular groove that cooperates with the slow cooling pit.

[0008] Furthermore, the heat dissipation adjustment component includes hinge shafts evenly distributed within the frame, a baffle hinged to the hinge shafts, a connecting seat at the top center of the baffle, a connecting shaft on the connecting seat, adjacent connecting shafts being hinged together by hinge rods, a hinge seat on one side of the top of the frame, and a hydraulic telescopic rod hinged between the hinge seat and the connecting shaft.

[0009] Furthermore, the frame is provided with a raised eave, and the baffle is provided with a notch that can seal with the raised eave.

[0010] Furthermore, the frame is provided with lifting lugs on both sides.

[0011] Furthermore, the slow cooling pit is equipped with a controller and a temperature sensor, and the controller is electrically connected to the temperature sensor and the hydraulic telescopic rod.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. By combining the insulation layer inside the slow cooling pit with the top cover plate, an insulated and sealed cavity can be formed inside the slow cooling pit, which facilitates the natural and slow cooling of the continuous casting billet inside the pit; it is even possible to use a control component to supply hot fluid of the corresponding temperature to the slow cooling pit according to the insulation and cooling rate requirements, so as to compensate for the heat of the slow cooling pit, thereby eliminating internal stress and preventing metal cracking.

[0014] 2. The heat dissipation adjustment component allows for easy adjustment of the opening of the upper baffle of the cover plate according to the heat dissipation requirements. At the same time, the even distribution of the baffles makes the heat dissipation in the slow cooling pit more uniform. The cold fluid can also be supplied by the control component to meet the cooling requirements.

[0015] 3. By setting up a protective layer, damage to the continuously cast billet is avoided when it is introduced into the slow cooling pit, thus extending its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a slow cooling control device for continuous casting according to the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of a slow cooling control device for continuous casting according to the present invention.

[0018] Figure 3 This is a top view schematic diagram of a slow cooling control device for continuous casting according to this utility model.

[0019] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of AA.

[0020] Figure 5 yes Figure 4 A magnified structural diagram of B in the diagram.

[0021] As shown in the figure: 1. Slow cooling pit, 2. Cover plate, 3. Insulation layer, 4. Protective layer, 5. Control component, 6. Outlet pipe, 7. Frame, 8. Baffle, 9. Heat dissipation adjustment component, 10. T-pipe, 11. Main inlet pipe, 12. Branch inlet pipe, 13. Cold pipe, 14. Warm pipe, 15. Circular groove, 16. Hinge shaft, 17. Connecting seat, 18. Connecting shaft, 19. Hinge rod, 20. Hydraulic telescopic rod, 21. Eaves, 22. Notch, 23. Lifting lug, 24. Controller, 25. Temperature sensor. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Combined with appendix Figure 1 and attached Figure 2 A slow cooling control device for continuous casting includes a slow cooling pit 1 with an open top, a cover plate 2 on the top of the slow cooling pit 1, and a control component 5 on one side of the slow cooling pit 1. The control component 5 includes a three-way pipe 10, an inlet main pipe 11 at one end of the three-way pipe 10, a plurality of inlet branch pipes 12 that can extend into the slow cooling pit 1 on the inlet main pipe 11, a warming pipe 14 connected to the other end, a cold pipe 13 connected to the other end, and an outlet pipe 6 on the other side.

[0024] High-carbon materials such as cast iron are prone to forming a hard and brittle white iron structure when rapidly cooled, which increases the difficulty of processing and the risk of cracking. Slow cooling is a process measure in the metallurgical and heat treatment fields to improve material properties by controlling the cooling rate. It is mainly used to prevent metal cracking, eliminate internal stress and optimize microstructure, improve the hardness and toughness of the cast billet, and enhance processing performance.

[0025] Existing slow cooling operation methods include loading steel or slag into slow cooling pit 1 for natural cooling; however, the initial temperature in slow cooling pit 1 is low, and the continuous casting billet is directly introduced into slow cooling pit 1 with a large temperature difference, which generates internal stress.

[0026] In this application, the setting of the control component 5 allows the hot fluid to be introduced into the slow cooling pit 1 through the inlet main pipe 11 via the warm pipe 14 as needed, in the initial stage and when the subsequent cooling rate is too fast, so as to preheat or compensate the heat of the slow cooling pit 1 and avoid the continuous casting billet from generating internal stress due to sudden cooling; the fluid after heat exchange is discharged and recycled through the outlet pipe 6.

[0027] Appendix Figure 3 and attached Figure 4 The slow cooling pit 1 is provided with an insulation layer 3 and a protective layer 4 from the outside to the inside.

[0028] The insulation layer 3 inside the slow cooling pit 1 helps to retain the heat inside the slow cooling pit 1, prevents heat loss, and allows the continuously cast billet to be cooled slowly.

[0029] The protective layer 4 is designed to protect the insulation layer 3 and the slow cooling pit 1, preventing the continuous casting billet from being directly damaged by collision during the introduction process, which would affect the service life of the slow cooling pit 1.

[0030] Combined with appendix Figure 3 and attached Figure 4 The cover plate 2 includes a frame 7 that cooperates with the top of the slow cooling pit 1. The inner side of the frame 7 is provided with several baffles 8 and a heat dissipation adjustment component 9 that can drive the baffles 8 to adjust the heat dissipation. The heat dissipation adjustment component 9 includes hinge shafts 16 evenly distributed in the frame 7. The baffles 8 are hinged to the hinge shafts 16. The top center of the baffle 8 is provided with a connecting seat 17. The connecting seat 17 is provided with a connecting shaft 18. Adjacent connecting shafts 18 are hinged to each other by hinge rods 19. A hinge seat is provided on one side of the top of the frame 7. A hydraulic telescopic rod 20 is hinged between the hinge seat and the connecting shaft 18.

[0031] Combined with appendix Figure 1 and attached Figure 4 The slow cooling pit 1 is equipped with a controller 24 and a temperature sensor 25. The controller 24 is electrically connected to the temperature sensor 25 and the hydraulic telescopic rod 20.

[0032] When the temperature sensor 25 detects that the cooling rate of the continuously cast billet is too slow, the controller 24 can partially open the cover plate 2 as needed to improve heat dissipation efficiency. However, the conventional cover plate 2 is a single piece, and when it is opened, it needs to be moved from the slow cooling pit 1 to the side of the slow cooling pit 1, which occupies a large area; moreover, after it is opened, the heat dissipation on the opened side is faster, which leads to uneven heat dissipation in the slow cooling pit 1.

[0033] In this application, the cover plate 2 includes several baffles 8, each baffle 8 is hinged on the hinge shaft 16, and the hydraulic telescopic rod 20 is driven by the controller 24. The hydraulic telescopic rod 20 drives the connecting shaft 18 to cause the connecting seat 17 and the baffle 8 on it to rotate around the hinge shaft 16. The hinge rod 19, the baffle 8 and the frame 7 together form a parallelogram structure. The end baffle 8 drives the other baffles 8 to rotate synchronously through the hinge rod 19, so that the opening of the baffle 8 can be adjusted to meet the heat dissipation requirements.

[0034] Combined with appendix Figure 4 and attached Figure 5 The frame 7 and the remaining baffles 8 except for the side near the hinge are respectively provided with eaves 21, and the baffles 8 are provided with notches 22 that can be sealed with the eaves 21.

[0035] The baffle 8 can be synchronously flipped through the hinge of the hinge rod 19. When the end baffle 8 is flipped so that the notch 22 engages with the eaves 21 on the frame 7, the eaves 21 can prevent the baffle 8 from continuing to flip. The eaves 21 on the remaining baffles 8, except for the side near the hinge seat, are provided so that the eaves 21 and the notch 22 can engage to achieve a seal, preventing heat from being dissipated through the gap between the hinge side of the baffle 8 and the eaves 21 when the baffle 8 is closed.

[0036] Combined with appendix Figure 5The frame 7 is configured to fit the top of the slow cooling pit 1. The top of the slow cooling pit 1 is inclined. The bottom of the frame 7 is provided with an annular groove 15 that fits with the slow cooling pit 1.

[0037] The longitudinal section at the top of the slow cooling pit 1 can be inclined inward or outward. This application adopts an inward inclination. The bottom outer side of the frame 7 is provided with an annular groove 15 that cooperates with the slow cooling pit 1, so as to facilitate the quick and accurate docking of the frame 7 and the top of the slow cooling pit 1.

[0038] Combined with appendix Figure 1 The frame 7 is provided with lifting lugs 23 on both sides; the lifting lugs 23 facilitate the crane to lift and place the cover plate 2 by connecting the lifting component with the lifting lugs 23.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for controlling slow cooling in continuous casting, comprising a slow cooling pit (1) with an open top, the slow cooling pit (1) having a cover plate (2) on top, characterized in that: The slow cooling pit (1) is provided with an insulation layer (3) and a protective layer (4) from the outside to the inside. A control component (5) is provided on one side of the slow cooling pit (1) and an outlet pipe (6) is provided on the other side. The cover plate (2) includes a frame (7) that cooperates with the top of the slow cooling pit (1). Several baffles (8) are provided inside the frame (7) and a heat dissipation adjustment component (9) that can drive the baffles (8) to adjust the heat dissipation.

2. The device for controlling slow cooling in continuous casting according to claim 1, characterized in that: The control component (5) includes a three-way pipe (10), one end of which is provided with an inlet main pipe (11), and the inlet main pipe (11) is provided with several inlet branch pipes (12) that can extend into the slow cooling pit (1), the other end is connected to a warm pipe (14), and the remaining end is connected to a cold pipe (13).

3. The device for slow cooling regulation in continuous casting according to claim 1, characterized in that: The top of the slow cooling pit (1) is inclined, and the bottom of the frame (7) is provided with an annular groove (15) that cooperates with the slow cooling pit (1).

4. The device for controlling slow cooling in continuous casting according to claim 1, characterized in that: The heat dissipation adjustment component (9) includes hinge shafts (16) evenly distributed within the frame (7), a baffle (8) hinged to the hinge shafts (16), a connecting seat (17) provided at the top center of the baffle (8), a connecting shaft (18) provided on the connecting seat (17), adjacent connecting shafts (18) being hinged together by hinge rods (19), a hinge seat provided on one side of the top of the frame (7), and a hydraulic telescopic rod (20) hinged between the hinge seat and the connecting shaft (18).

5. A device for controlling slow cooling in continuous casting according to claim 4, characterized in that: The frame (7) is provided with an eave (21), and the baffle (8) is provided with a notch (22) that can be sealed with the eave (21).

6. A device for controlling slow cooling in continuous casting according to claim 1, characterized in that: The frame (7) is provided with lugs (23) on both sides.

7. A device for controlling slow cooling in continuous casting according to claim 4, characterized in that: The slow cooling pit (1) is equipped with a controller (24) and a temperature sensor (25), and the controller (24) is electrically connected to the temperature sensor (25) and the hydraulic telescopic rod (20).

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