A hexagonal electroslag remelting combined crystallizer

Abstract

This utility model discloses a hexagonal electroslag remelting combined crystallizer, belonging to the technical field of electroslag remelting crystallizers. It includes crystallizer half-modules, with two half-modules combined to form the main body of the crystallizer. Each half-module includes a crystallization structure, a cooling structure, and a connecting structure. The crystallization structure includes a working copper plate, an upper top plate, and a lower bottom plate. The upper side of the working copper plate is fixedly connected to the upper top plate, and the lower side is fixedly connected to the lower bottom plate. The working copper plate includes a middle panel and side panels, which are formed by bending. The side panels are symmetrically distributed on both sides of the middle panel. A cooling structure is installed on the outer side of the working copper plate. A connecting structure for connecting the two working copper plates is installed on the outer side of the side panels. Through this method, it has strong resistance to deformation, achieves optimal heat transfer efficiency, and allows for the separation of the two sets of triangular crystallizer half-modules for replacement or repair, significantly improving the service life of the crystallizer.

Description

Technical Field

[0001] This utility model relates to the technical field of electroslag remelting crystallizers in the metallurgical machinery industry, specifically to a hexagonal electroslag remelting combined crystallizer. Background Technology

[0002] Electroslag remelting crystallizers are essential supporting equipment for the production of electroslag steel ingots in electroslag furnaces. During the production process, enterprises involved in electroslag remelting usually need to prepare various crystallizers of different sizes, shapes, and specifications to meet their different production needs.

[0003] For example, Chinese patent CN216972642U discloses a circular electroslag remelting crystallizer, which can improve production efficiency and has a long service life.

[0004] However, circular crystallizers have two main drawbacks: 1. Compared to crystallizers of other shapes and cross-sectional areas, circular crystallizers have the smallest circumference, meaning the smallest specific surface area. This means the working copper plate in a circular crystallizer provides the least amount of cooling energy to the molten metal pool during smelting, negatively impacting the solid-liquid interface solidification process: longer solidification time and larger crystal grain size, especially pronounced in larger circular crystallizers. 2. Circular crystallizers have poor maintainability; once internal damage occurs, repair is extremely difficult and costly.

[0005] Based on this, this utility model designs a hexagonal electroslag remelting combined crystallizer to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, this utility model provides a hexagonal electroslag remelting combined crystallizer.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A hexagonal electroslag remelting combined crystallizer includes two crystallizer half-modules, which are combined to form the crystallizer body; the crystallizer half-module includes a crystallization structure, a cooling structure and a connecting structure;

[0009] The crystalline structure includes a working copper plate, an upper top plate, and a lower bottom plate. The upper side of the working copper plate is fixedly connected to the upper top plate, and the lower side of the working copper plate is fixedly connected to the lower bottom plate. The working copper plate includes a middle panel and side panels, which are formed by bending. The side panels are symmetrically distributed on both sides of the middle panel.

[0010] A cooling structure is installed on the outside of the working copper plate;

[0011] The side panel of the working copper plate is equipped with a connecting structure for connecting two working copper plates together.

[0012] Furthermore, the width of the middle panel of the working copper plate is 150mm~500mm; the width of the side panel is 100mm~400mm.

[0013] Furthermore, the included angle ∝ between the middle panel and the side panel of the working copper plate is 105°~115°.

[0014] Furthermore, the cooling structure includes a partitioned cooling box structure and an inlet / outlet water module. The partitioned cooling box structure is fixedly installed on the outside of the working copper plate; the inlet / outlet water module is connected to the partitioned cooling box structure.

[0015] Furthermore, the partitioned cooling box structure includes an outer shell and a water tank partition. The outer shell is located outside the working copper plate, with its upper side fixedly connected to the upper top plate and its lower side fixedly connected to the lower bottom plate. Water tank partitions are uniformly and evenly fixedly installed between the outer shell and the working copper plate. The water tank partitions, the outer shell, and the working copper plate together form a cooling chamber.

[0016] Furthermore, the water inlet / outlet module includes a main water inlet pipe, a main water outlet pipe, cooling channels, partitioned water inlet pipes, and partitioned water outlet pipes. Cooling channels are symmetrically fixedly installed on both sides of the outer shell, and another cooling channel is fixedly connected to the outer side of the center line slightly to the right. The middle of the two cooling channels is fixedly connected to the main water inlet pipe, and multiple partitioned water inlet pipes are evenly installed at equal intervals in the two cooling channels, with the partitioned water inlet pipes fixedly connected to the outer shell. The middle of the other cooling channel is fixedly connected to the main water outlet pipe, and multiple partitioned water outlet pipes are evenly installed at equal intervals in the other cooling channel, with the partitioned water outlet pipes fixedly connected to the outer shell.

[0017] Furthermore, the main water inlet pipe, cooling channel, zoned water inlet pipe, cooling chamber, zoned water outlet pipe and main water outlet pipe are connected;

[0018] Furthermore, the connection structure includes a connecting plate, which is fixedly connected to the side panel of the working copper plate. The connecting plate has multiple threaded holes evenly spaced at equal intervals. When two working copper plates are combined, the two connecting plates connected to different working copper plates are fitted together, and the threaded holes on the two fitted connecting plates are aligned and fixed by bolts.

[0019] Furthermore, a vertical stiffening plate is fixedly installed on the center line of the outer side of the shell;

[0020] Furthermore, the inner sidewalls of the connecting plate are symmetrically equipped with sealing structures.

[0021] Furthermore, the sealing structure includes a stepped block and a sealing strip. The sealing groove, sealing strip, and stepped block are located on the inner sides of two mating connecting plates. A sealing groove is opened on the inner side of one connecting plate, and a stepped block is fixedly installed on the inner side of the other connecting plate. The sealing strip is embedded in the sealing groove. The stepped block is inserted into the sealing groove.

[0022] Furthermore, the stepped block can be tightly fitted with the sealing groove to form a sealed melting cavity.

[0023] Compared with the prior art, the advantages of this utility model are as follows: It adopts a combined triangular symmetrical structure, which, under the condition of process permitting, can obtain the maximum specific surface area while achieving the minimum center distance. It also possesses strong resistance to deformation and excellent maintainability, resulting in optimal heat transfer efficiency. The flow of cooling water optimizes the temperature distribution on the outer surface of the working copper plate, ensuring uniform temperature and achieving cooling crystallization. When components such as the working copper plate are damaged (e.g., severe ablation or cracking), the sealing groove and step block can be separated by removing the bolts, allowing for the replacement or repair of the two sets of triangular crystallizer half-modules, significantly improving the service life of the crystallizer. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This utility model relates to a three-dimensional hexagonal electroslag remelting combined crystallizer. Figure 1 ;

[0026] Figure 2 This utility model relates to a three-dimensional hexagonal electroslag remelting combined crystallizer. Figure 2 ;

[0027] Figure 3 This is a front view of a hexagonal electroslag remelting combined crystallizer according to the present invention;

[0028] Figure 4 This is a top view of a hexagonal electroslag remelting combined crystallizer according to the present invention;

[0029] Figure 5 For along Figure 3 A cross-sectional view along the AA direction;

[0030] Figure 6 For along Figure 3 A cross-sectional view along the BB direction;

[0031] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0032] Figure 8 This is a schematic diagram of the water inlet and outlet modules.

[0033] The labels in the diagram represent:

[0034] 1. Crystalline structure; 11. Working copper plate; 12. Top plate; 13. Bottom plate; 2. Cooling structure; 21. Partitioned cooling box structure; 211. Outer shell; 212. Water tank partition; 22. Inlet and outlet water modules; 221. Centralized inlet water pipe; 222. Centralized outlet water pipe; 223. Cooling flow channel; 224. Partitioned inlet water pipe; 225. Partitioned outlet water pipe; 3. Connection structure; 31. Connecting plate; 32. Threaded hole; 4. Vertical stiffener plate; 5. Sealing structure; 51. Sealing groove; 52. Stepped block; 53. Sealing strip. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to orientation from the perspective of the current viewpoint.

[0037] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-8 A hexagonal electroslag remelting combined crystallizer includes two crystallizer half-modules, which are combined to form the crystallizer body; the crystallizer half-module includes a crystallization structure 1, a cooling structure 2 and a connecting structure 3;

[0038] The crystal structure 1 includes a working copper plate 11, an upper top plate 12, and a lower bottom plate 13. The upper side of the working copper plate 11 is fixedly connected to the upper top plate 12, and the lower side of the working copper plate 11 is fixedly connected to the lower bottom plate 13. The working copper plate 11 includes a middle panel and a side panel, which are formed by bending. The side panels are symmetrically distributed on both sides of the middle panel.

[0039] A cooling structure 2 is installed on the outer side of the working copper plate 11;

[0040] The outer side panel of the working copper plate 11 is equipped with a connecting structure 3 for connecting two working copper plates 11 together.

[0041] In this embodiment, before the hexagonal electroslag remelting combined crystallizer can operate normally, two sets of triangular crystallizer half-modules need to be assembled first. The two sets of crystallizer half-modules are connected by connecting structure 3 bolts to obtain an electroslag remelting combined crystallizer with a hexagonal melting cavity. The two sets of crystallizer half-modules form a reliable sealing interface under the action of bolt pre-tightening force, which effectively prevents leakage of high-temperature molten liquid in the high-temperature melting environment and improves the sealing reliability and stability.

[0042] When the hexagonal electroslag remelting combined crystallizer is working normally, molten metal droplets fall into the lower part of the crystallizer and gradually solidify into hexagonal steel ingots. The ingots are cooled in sections by the cooling structure 2 connected to the working copper plate 11, which removes the high temperature released by the electroslag melting and ensures that the surface temperature of the working copper plate 11 is uniform, thus achieving the purpose of cooling and crystallization.

[0043] When damage occurs inside the crystallizer, it can be disassembled into two half-modules, and the damaged parts can be welded or corrected to improve maintenance efficiency and reduce economic losses.

[0044] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 2 - As shown in the figure, the width of the middle panel of the working copper plate 11 is 150mm~500mm; the width of the side panel is 100mm~400mm.

[0045] The included angle ∝ between the middle panel and the side panel of the working copper plate 11 is 105°~115°.

[0046] The cooling structure 2 includes a partitioned cooling box structure 21 and an inlet / outlet water module 22. The partitioned cooling box structure 21 is fixedly installed on the outside of the working copper plate 11; the inlet / outlet water module 22 is connected to the partitioned cooling box structure 21.

[0047] The partitioned cooling box structure 21 includes an outer shell 211 and a water tank partition 212. The outer shell 211 is located outside the working copper plate 11. The upper side of the outer shell 211 is fixedly connected to the upper top plate 12, and the lower side of the outer shell 211 is fixedly connected to the lower bottom plate 13. The water tank partition 212 is uniformly and evenly fixedly installed between the outer shell 211 and the working copper plate 11. The water tank partition 212, the outer shell 211, and the working copper plate 11 form a cooling chamber.

[0048] Water tank baffle 212 is made of copper plate with good thermal conductivity;

[0049] The water inlet / outlet module 22 includes a main water inlet pipe 221, a main water outlet pipe 222, a cooling channel 223, a partitioned water inlet pipe 224, and a partitioned water outlet pipe 225. Cooling channels 223 are symmetrically installed on both sides of the outer casing 211. Another cooling channel 223 is fixedly connected to the outer side of the outer casing 211, slightly to the right of its center line. The middle of the two cooling channels 223 is fixedly connected to the main water inlet pipe 221. Multiple partitioned water inlet pipes 224 are evenly installed at equal intervals within the two cooling channels 223, and the partitioned water inlet pipes 224 are fixedly connected to the outer casing 211. The middle of another cooling channel 223 is fixedly connected to the main water outlet pipe 222. Multiple partitioned water outlet pipes 225 are evenly installed at equal intervals within the other cooling channel 223, and the partitioned water outlet pipes 225 are fixedly connected to the outer casing 211.

[0050] The main water inlet pipe 221, cooling flow channel 223, zoned water inlet pipe 224, cooling chamber, zoned water outlet pipe 225 and main water outlet pipe 222 are connected;

[0051] The connection structure 3 includes a connecting plate 31, which is fixedly connected to the side panel of the working copper plate 11. The connecting plate 31 has a plurality of threaded holes 32 evenly spaced on it. When the two working copper plates 11 are combined, the two connecting plates 31 connected to different working copper plates 11 are fitted together. After the threaded holes 32 on the two fitted connecting plates 31 are aligned, they are fixed by bolts.

[0052] A vertical stiffening plate 4 is fixedly installed on the outer center line of the outer shell 211;

[0053] The inner sidewall of the connecting plate 31 is symmetrically equipped with sealing structures 5.

[0054] The sealing structure 5 includes a stepped block 52 and a sealing strip 53. The sealing groove 51, the sealing strip 53 and the stepped block 52 are respectively located inside the two mating connecting plates 31. A sealing groove 51 is opened on the inner side of one connecting plate 31, and a stepped block 52 is fixedly installed on the inner side of the other connecting plate 31. The sealing strip 53 is embedded in the sealing groove 51. The stepped block 52 is inserted into the sealing groove 51.

[0055] The stepped block 52 can be tightly fitted with the sealing groove 51 to form a sealed melting cavity.

[0056] In this embodiment, when assembling the hexagonal electroslag remelting combined crystallizer, two sets of triangular crystallizer half-modules are fitted together, aligning the threaded holes 32 on the two fitted connecting plates 31. Bolts are passed through the threaded holes 32 and tightened with nuts, so that the threaded holes 32 on both sides are tightly fitted. During this process, the stepped block 52 on one half-module connecting plate 31 is tightly fitted with the sealing groove 51 and sealing strip 53 on the other half-module connecting plate 31, forming a reliable sealing interface under the action of bolt preload, effectively preventing leakage of high-temperature molten metal and slag.

[0057] After the hexagonal electroslag remelting combined crystallizer is assembled, the working copper plates 11 on both sides are combined into a symmetrical non-regular hexagon. Under the conditions permitted by the process, the maximum specific surface area can be obtained while the minimum center distance is obtained, resulting in the best heat transfer efficiency. The upper top plate 12 is located above the working copper plate 11 and plays an auxiliary positioning role to ensure that the high-temperature molten liquid can fall accurately into the working copper plate 11. The lower bottom plate 13 is located below the working copper plate 11, providing bottom support for the working copper plate 11 and the outer shell 211, and sealing the cooling water cavity to ensure the sealed operation of the cooling system.

[0058] When the hexagonal electroslag remelting combined crystallizer is working normally, cooling water enters from the combined inlet pipes 221 on both the left and right sides. The cooling water flows from bottom to top through the cooling channel 223 to different partition inlet pipes 224, and flows into multiple independent cooling chamber partitions formed by the working copper plate 11, the outer shell 211 and the water tank partition 212. The water flows in each partition chamber, specifically removing the heat transferred by the working copper plate 11 in the corresponding area, playing a role in partition temperature regulation, so that the external temperature of the working copper plate 11 is maintained uniformly and stably. The water that has absorbed heat flows out through multiple partition outlet pipes 225 and is discharged through the combined outlet pipe 222. Through the flow of cooling water, the temperature distribution on the outer surface of the working copper plate 11 is optimized, ensuring that the outer surface temperature of the working copper plate 11 is uniform and realizing cooling crystallization.

[0059] The vertical stiffener 4 plays a supporting role in the hexagonal electroslag remelting combined crystallizer, making the crystallizer less prone to deformation when subjected to molten steel pressure, thermal stress, etc., maintaining structural stability, and extending the service life of the hexagonal electroslag remelting combined crystallizer.

[0060] The sealing grooves 51 and stepped blocks 52 on the left and right sides of the connecting plate 31 adopt a concave-convex interlocking structure design. When the two sets of connecting plates 31 are combined, the sealing grooves 51 and stepped blocks 52 of the corresponding molded mating parts can be tightly interlocked by the sealing strip 53 to form a sealed melting cavity, effectively preventing leakage of high-temperature molten liquid and improving sealing reliability and stability.

[0061] When components such as the working copper plate 11 are damaged, such as by severe burning or cracking, the sealing groove 51 and the step block 52 can be separated by removing the bolts, and the two sets of triangular crystallizer half modules can be separated for replacement or repair.

[0062] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hexagonal electroslag remelting combined crystallizer, comprising two crystallizer half-modules symmetrically distributed front and back, characterized in that: The two crystallizer half-modules are combined to form the crystallizer body; the crystallizer half-module includes a crystallization structure (1), a cooling structure (2) and a connecting structure (3); The crystal structure (1) includes a working copper plate (11), an upper top plate (12) and a lower bottom plate (13). The upper side of the working copper plate (11) is fixedly connected to the upper top plate (12), and the lower side of the working copper plate (11) is fixedly connected to the lower bottom plate (13). The working copper plate (11) includes a middle panel and a side panel. The middle panel and the side panel are formed by bending. The side panels are symmetrically distributed on both sides of the middle panel. A cooling structure (2) is installed on the outside of the working copper plate (11); The working copper plate (11) has a connecting structure (3) installed on the outer side of its side panel for connecting two working copper plates (11) together.

2. The hexagonal electroslag remelting combined crystallizer according to claim 1, characterized in that, The width of the middle panel of the working copper plate (11) is 150mm~500mm; the width of the side panel is 100mm~400mm.

3. The hexagonal electroslag remelting combined crystallizer according to claim 2, characterized in that, The included angle ∝ between the middle panel and the side panel of the working copper plate (11) is 105°~115°.

4. The hexagonal electroslag remelting combined crystallizer according to claim 1, characterized in that, The cooling structure (2) includes a partitioned cooling box structure (21) and an inlet / outlet water module (22). The partitioned cooling box structure (21) is fixedly installed on the outside of the working copper plate (11). The inlet / outlet water module (22) is connected to the partitioned cooling box structure (21).

5. The hexagonal electroslag remelting combined crystallizer according to claim 4, characterized in that, The partitioned cooling box structure (21) includes an outer shell (211) and a water tank partition (212). The outer shell (211) is located outside the working copper plate (11). The upper side of the outer shell (211) is fixedly connected to the upper top plate (12), and the lower side of the outer shell (211) is fixedly connected to the lower bottom plate (13). The water tank partition (212) is evenly fixedly installed between the outer shell (211) and the working copper plate (11). The water tank partition (212), the outer shell (211), and the working copper plate (11) form a cooling cavity.

6. The hexagonal electroslag remelting combined crystallizer according to claim 5, characterized in that, The water inlet and outlet module (22) includes a main water inlet pipe (221), a main water outlet pipe (222), a cooling channel (223), a partitioned water inlet pipe (224), and a partitioned water outlet pipe (225). Cooling channels (223) are symmetrically fixedly installed on both sides of the outer shell (211). Another cooling channel (223) is fixedly connected to the outer center line of the outer shell (211) slightly to the right. The middle part of the two cooling channels (223) is fixedly connected to the main water inlet pipe (221). Multiple partitioned water inlet pipes (224) are evenly installed in the two cooling channels (223) at equal intervals. The partitioned water inlet pipes (224) are fixedly connected to the outer shell (211). The middle part of the other cooling channel (223) is fixedly connected to the main water outlet pipe (222). Multiple partitioned water outlet pipes (225) are evenly installed in the other cooling channel (223) at equal intervals. The partitioned water outlet pipes (225) are fixedly connected to the outer shell (211).

7. The hexagonal electroslag remelting combined crystallizer according to claim 6, characterized in that, The main water inlet pipe (221), cooling flow channel (223), zone water inlet pipe (224), cooling chamber, zone water outlet pipe (225) and main water outlet pipe (222) are connected.

8. The hexagonal electroslag remelting combined crystallizer according to claim 7, characterized in that, The connection structure (3) includes a connection plate (31), which is fixedly connected to the side panel of the working copper plate (11). Multiple threaded holes (32) are evenly spaced on the connection plate (31). When the two working copper plates (11) are combined, the two connection plates (31) connected to different working copper plates (11) are fitted together. The threaded holes (32) on the two fitted connection plates (31) are aligned and fixed by bolts.

9. The hexagonal electroslag remelting combined crystallizer according to claim 5, characterized in that, A vertical stiffener plate (4) is fixedly installed on the outer center line of the outer shell (211).

10. The hexagonal electroslag remelting combined crystallizer according to claim 7, characterized in that, A sealing structure (5) is symmetrically fixed to the inner wall of the connecting plate (31).

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