Continuous casting crystallizer copper plate and continuous casting crystallization equipment

Abstract

The present application provides a continuous casting crystallizer copper plate and continuous casting crystallization equipment, which relate to the field of continuous casting technology. The continuous casting crystallizer copper plate includes a copper plate body, a sealing part, a guide cooling rib and a plurality of strip-shaped partitions. The front of the copper plate body is a working surface, and the back is a cooling surface. The sealing part is arranged on the periphery of the cooling surface. Each partition includes a plurality of screw holes distributed along the coolant flow direction and reinforcing ribs connecting two adjacent screw holes; a plurality of partitions are distributed parallel and spaced on the cooling surface in a direction perpendicular to the coolant flow direction; a relatively independent cooling zone is formed between the sealing part, the cooling surface and the two adjacent partitions; the guide cooling rib is arranged between the two adjacent partitions and divides them into two cooling water troughs. The continuous casting crystallizer copper plate reduces the processing procedures while ensuring the strength of the copper plate. The relatively wide cooling water trough is more convenient to process. The contact area between the cooling water and the copper plate is increased, and the cooling effect is better.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting, and in particular to a continuous casting crystallizer copper plate and continuous casting crystallization equipment. Background Art

[0002] Typically, the crystallizer used for metal continuous casting is made of copper or copper alloy and is connected to a water tank by bolts. The gap between it and the water tank is the flow channel for cooling water, wherein the surface in contact with the molten steel is the working surface, and the surface in contact with the cooling water is the cooling surface.

[0003] When the copper plate of the crystallizer in the prior art is used for continuous casting, unexpected local overheating may occur due to the large amount of heat supplied from the casting process, resulting in deformation of the crystallizer.

[0004] In view of this, this application is hereby filed. Summary of the invention

[0005] One of the purposes of the present application includes providing a continuous casting crystallizer copper plate, which can increase the contact area between cooling water and the copper plate, avoid local overheating, and reduce the probability of deformation.

[0006] A second object of the present application includes providing a continuous casting crystallization device comprising the above-mentioned continuous casting crystallizer copper plate.

[0007] This application can be implemented as follows:

[0008] In a first aspect, the present application provides a continuous casting crystallizer copper plate, comprising a copper plate body, a sealing portion, flow-guiding cooling ribs, and a plurality of strip-shaped partitions.

[0009] The front side of the copper plate body is the working side, and the back side is the cooling side.

[0010] The sealing portion is provided on the periphery of the cooling surface.

[0011] Each partition includes a plurality of screw holes for connecting to the water tank and spaced apart along the flow direction of the coolant, and reinforcing ribs connecting two adjacent screw holes; both ends of each partition extend to the sealing portion, and a relatively independent cooling zone is formed between the sealing portion, the cooling surface and two adjacent partitions; a plurality of partitions are spaced apart and parallel on the cooling surface along a direction perpendicular to the flow direction of the coolant.

[0012] The guide cooling rib is arranged between two adjacent partitions along the coolant flow direction and is used to divide the cooling area formed between the two partitions into two cooling water tanks.

[0013] In an optional embodiment, along a direction perpendicular to the coolant flow direction, the distances between any two adjacent partitions are equal.

[0014] In an optional embodiment, a high temperature zone and a low temperature zone are sequentially formed at both ends of the copper plate body along the coolant flow direction.

[0015] The width of at least a portion of the reinforcing ribs located in the high temperature zone is smaller than the width of the screw hole portion.

[0016] In an optional embodiment, the width of at least a portion of the reinforcing ribs located in the low temperature zone is greater than the width of the screw hole portion.

[0017] In an optional embodiment, the height of the flow-guiding cooling rib relative to the cooling surface is lower than the height of the sealing portion relative to the cooling surface.

[0018] And / or, the height of the guide cooling rib relative to the cooling surface is lower than the height of the reinforcement rib relative to the cooling surface.

[0019] In an optional embodiment, each reinforcing rib located in the low temperature zone is provided with a keyway for cooperating with the pressure strip at the same position in the coolant flow direction.

[0020] The width of the keyway provided for each reinforcement rib is equal.

[0021] In an optional embodiment, the reinforcing rib with the keyway is also provided with a fixing screw hole for fixing to the pressure strip via a fastener.

[0022] In an optional embodiment, the working surface is funnel-shaped in the middle portion in a direction perpendicular to the coolant flow direction.

[0023] In a second aspect, the present application provides a continuous casting crystallization device, comprising a slab and a continuous casting crystallizer copper plate of any of the above embodiments. The slab has a profile that matches the cooling surface and is fixed to the cooling surface through a pressure strip.

[0024] In an optional embodiment, a water gap for cooling water to flow is formed between the strip and the cooling surface.

[0025] The contact surface of the insert facing the coolant is parallel to the bottom surface of the cooling water tank.

[0026] The beneficial effects of this application include:

[0027] By setting the guide cooling ribs, a cooling zone can be divided into two cooling water tanks, so that the heat dissipation effect can be improved. Under the premise of ensuring a high heat exchange efficiency, each position of the copper plate body can be evenly cooled, which can avoid local overheating and reduce the probability of deformation. At the same time, the guide cooling ribs can also improve the overall strength and reduce the processing procedures. The continuous casting crystallization equipment including the above-mentioned continuous casting crystallization copper plate also has the above-mentioned effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of the continuous casting crystallization device provided in this embodiment from a first viewing angle;

[0030] Figure 2 A schematic diagram of the structure of the continuous casting crystallization device provided in this embodiment from a second viewing angle;

[0031] Figure 3 A schematic diagram of the structure of the continuous casting crystallizer copper plate provided in this embodiment;

[0032] Figure 4 A schematic structural diagram of the inlay provided in this embodiment.

[0033] Icons: 1000-continuous casting crystallization equipment; 100-continuous casting crystallizer copper plate; 10-copper plate body; 11-working surface; 12-cooling surface; 13-recessed area; 14-cooling water trough; 15-cooling interval; 101-first preset direction; 102-second preset direction; 103-high temperature zone; 104-low temperature zone; 20-sealing part; 30-partitioning part; 31-screw hole part; 32-reinforcement rib; 33-keyway; 34-fixing screw hole; 40-guide cooling rib; 200-inlay; 201-contact surface; 300-water gap; 400-pressure strip. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inner", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0040] Generally, the crystallizer used for metal continuous casting is made of copper or copper alloy, connected to a water tank by bolts, and the gap between it and the water tank is a flow channel for cooling water, wherein the surface 201 in contact with molten steel is a working surface 11, and the surface in contact with cooling water is a cooling surface 12. When the crystallizer copper plate in the prior art is used for continuous casting, due to the large amount of heat supplied from the casting process, unexpected local overheating may occur, resulting in deformation of the crystallizer.

[0041] Please refer to Figures 1 to 4 This embodiment provides a continuous casting crystallizer copper plate 100 and a continuous casting crystallization device 1000, which can effectively improve or solve the above technical problems.

[0042] The continuous casting crystallizer copper plate 100 provided in this embodiment will be introduced in detail below. The continuous casting crystallizer copper plate 100 includes a copper plate body 10, a sealing portion 20, a guide cooling rib 40 and a plurality of strip-shaped partitions 30.

[0043] The copper plate body 10 is a thin plate made of copper. Figure 1 ,by Figure 1 The relative position in the figure shows that the cross section of the copper plate body 10 is roughly rectangular. In this embodiment, the front side of the copper plate body 10 is the working surface 11, and the back side is the cooling surface 12. According to the heating area, the copper plate body 10 forms a high temperature zone and a low temperature zone at both ends along the coolant flow direction, that is, the upper part forms a high temperature zone 103, and the lower part of the copper plate body 10 forms a low temperature zone 104. The high temperature zone 103 and the low temperature zone 104 are distributed along the first preset direction 101. At the same time, Figure 1In the continuous casting mold copper plate 100 shown, the flow direction of the coolant is shown by arrow A. It is worth noting that the above-mentioned "high temperature zone" and "low temperature zone" do not refer to temperatures within a specific range, but are relatively compared, with the higher temperature being called the high temperature zone and the lower temperature being called the low temperature zone.

[0044] The sealing portion 20 is disposed on the periphery of the cooling surface 12 . Specifically, the sealing portion 20 is protruded from the cooling surface 12 and is disposed around the periphery of the copper plate body 10 to seal the coolant in the cooling surface 12 .

[0045] Each partition 30 includes a plurality of screw holes 31 spaced apart in the coolant flow direction (also referred to as the first preset direction 101 or the width direction of the copper plate body 10 in this application) and a reinforcing rib 32 connecting two adjacent screw holes 31. The screw holes 31 are used to connect to a water tank (not shown). Both ends of each partition 30 extend to the sealing portion 20.

[0046] The plurality of partitions 30 are parallel and spaced apart on the cooling surface 12 along a direction perpendicular to the coolant flow direction (also referred to as the second preset direction 102 or the length direction of the copper plate body 10 in this application). Preferably, along the direction perpendicular to the coolant flow direction, the distance between any two adjacent partitions 30 is equal.

[0047] A relatively independent cooling zone 15 is formed between the sealing portion 20, the cooling surface 12 and two adjacent partitions 30. The cooling zone 15 is used to match the insert strip 200 so that a water gap 300 for cooling water to flow is formed between the insert strip 200 and the cooling surface 12.

[0048] The guide cooling rib 40 is arranged between two adjacent partitions 30 along the coolant flow direction (first preset direction 101), and both ends of the guide cooling rib 40 extend to the sealing portion 20, which is used to divide the cooling zone 15 formed between the two partitions 30 into two cooling water troughs 14.

[0049] The screw hole portion 31 is provided with a pin screw hole, and the pin screw holes are distributed in rows and columns on the copper plate body 10. Moreover, along the second preset direction 102, the distance between any two adjacent partitions 30 is equal. Specifically, along the second preset direction 102, a cooling zone 15 is defined between each two adjacent partitions 30, and the multiple cooling zones 15 are relatively independent. A guide cooling rib 40 is provided in each cooling area, which extends from the bottom of the low-temperature zone 104 to the top of the high-temperature zone 103, and reduces the processing procedures while ensuring the overall strength. At the same time, the contact area with the cooling water can be increased, and the cooling effect is better. In addition, since the width of the cooling water trough 14 is narrower than the cooling zone 15, it is more convenient to process, and it is also convenient for the cleaning and maintenance of the cooling water trough 14 in the later stage. Optionally, the number of cooling water troughs 14 can be reduced, and the width of the inlay strip 200 can be increased, which can also improve the water cooling effect to a certain extent.

[0050] By providing the guiding cooling ribs 40, a cooling zone 15 can be divided into two cooling water tanks 14, so that the heat dissipation effect can be improved. Under the premise of ensuring a high heat exchange efficiency, each position of the copper plate body 10 can be evenly cooled, which can avoid local overheating and reduce the probability of deformation. At the same time, the guiding cooling ribs 40 can also improve the overall strength and reduce the processing procedures.

[0051] In this embodiment, the thickness of the reinforcing ribs 32 in the upper region of the copper plate body 10 is substantially equal and generally thinner, and the thickness of the reinforcing ribs 32 in the lower region of the copper plate body 10 is substantially equal and generally thicker. By reducing the wall thickness of at least part of the reinforcing ribs 32 in the high temperature zone 103, the water cooling effect can be improved to avoid local overheating of some regions in the high temperature zone 103. In addition, it can also be understood that the thickness of at least part of the reinforcing ribs 32 located in the high temperature zone 103 is less than the thickness of the reinforcing ribs 32 located in the low temperature zone 104.

[0052] Specifically, the width of at least part of the reinforcing ribs 32 located in the high temperature zone 103 is smaller than the width of the screw hole portion 31. The width of at least part of the reinforcing ribs 32 located in the low temperature zone 104 is greater than the width of the screw hole portion 31. Accordingly, it can also be understood that along the first preset direction 101, the thickness of at least part of the sealing portion 20 located in the high temperature zone 103 is smaller than the thickness of the sealing portion 20 located in the low temperature zone 104.

[0053] The reinforcing ribs 32 between the screw holes 31 in the high temperature zone 103 have a reduced wall thickness, so as to increase the cooling water contact surface as much as possible without reducing the mechanical strength of the copper plate.

[0054] Combination Figure 1 and Figure 2The height of the guiding cooling rib 40 relative to the cooling surface 12 is lower than the height of the sealing portion 20 relative to the cooling surface 12, and / or the height of the guiding cooling rib 40 relative to the cooling surface 12 is lower than the height of the reinforcing rib 32 relative to the cooling surface 12. Among them, the height of the sealing portion 20 is relatively high, which can achieve a better sealing effect. At the same time, at least part of the guiding cooling rib 40 is within the cooling water surface.

[0055] Furthermore, each reinforcing rib 32 in the low temperature zone 104 is provided with a keyway 33 at the same position in the coolant flow direction to cooperate with the pressure strip 400. The width of the keyway 33 provided on each reinforcing rib 32 is equal.

[0056] Furthermore, the reinforcing rib 32 with the key slot 33 is also provided with a fixing screw hole 34 for fixing to the pressure strip 400 through a fastener.

[0057] The continuous casting crystallization equipment 1000 provided in this embodiment may include a slat 200, a pressure strip 400 and a continuous casting crystallizer copper plate 100. The profile of the slat 200 matches the cooling surface of the casting crystallizer, and is fixed to the cooling surface 12 of the casting crystallizer through the pressure strip 400. Specifically, in this embodiment, a water gap 300 for cooling water flow is formed between the slat 200 and the cooling surface 12. Among them, the contact surface of the slat 200 facing the coolant (that is, the side surface facing the water gap 300) is parallel to the bottom surface of the cooling water tank. In this way, it can be ensured that the water gaps 300 in the same cooling water tank are of equal height, and the height of the water gap 300 can be determined by adjusting the position of the slat 200 as needed.

[0058] In the present application, the assembly of the above structure can be performed in the following manner: first, the inlay strip 200 is installed on the copper plate body 10, then the pressure strip 400 is installed in the keyway 33, and finally, a fastener (e.g., a screw) is matched with the fixing screw hole 34. Thus, the pressure strip 400 is fixed to the copper plate body 10, so that the inlay strip 200 can be effectively fixed to the copper plate body 10.

[0059] When the insert 200 is installed in the cooling zone 15, the guide cooling ribs 40 and the reinforcing ribs 32 located in the high temperature zone 103 can play a better positioning role for the insert 200. The middle part of the working surface 11 in the second preset direction 102 is recessed in the direction close to the cooling surface 12 to form a recessed area 13. It can also be understood that the middle part of the working surface 11 in the direction perpendicular to the coolant flow direction is funnel-shaped. In addition, the insert 200 also has a corresponding shape, which ensures the consistency of the shape of the water gap 300, thereby ensuring the uniformity of cooling, which is beneficial to improving the quality of the casting. At the same time, combined with Figure 2 In the embodiment, the water tank will be installed in the lower area of ​​the trim 200.

[0060] In summary, the continuous casting crystallizer copper plate 100 provided in the present application has at least the following effects:

[0061] First, each independent cooling zone 15 is provided with a guide cooling rib 40, or, after the inlay 200 matching the cooling zone 15 is assembled with the copper plate body 10, the guide cooling rib 40 and the reinforcing rib 32 of the high temperature zone 103 can play a positioning role for the inlay 200, forming a cooling water channel, i.e., a water gap 300. The contact surface between the inlay 200 and the cooling water changes with the curvature of the funnel area surface of the continuous casting crystallizer copper plate 100, thereby ensuring the consistency of the water gap height, thereby ensuring the uniformity of cooling, and being beneficial to improving the quality of the casting.

[0062] Second, the crystallizer assembly plan remains unchanged, and the existing water tank is fully utilized. At the same time, considering that the thermal stress and thermal cracks of the continuous casting crystallizer copper plate 100 are concentrated in the high-temperature area on the upper part of the copper plate, the water cooling structure of the high-temperature zone 103 of the copper plate cooling surface 12 is modified to enhance the water cooling effect. The reinforcing ribs 32 between the screw holes 31 of the high-temperature zone 103 adopt a reduced wall thickness to increase the cooling water contact surface as much as possible while ensuring that the mechanical strength of the copper plate is not reduced.

[0063] Third, the number of cooling water tanks 14 is reduced, and the corresponding inlay strips 200 are widened, which is convenient for assembly and subsequent cleaning and maintenance of the cooling water tanks 14 .

[0064] The continuous casting crystallization equipment 1000 including the above-mentioned continuous casting crystallizer copper plate 100 has all the functions of the continuous casting crystallizer copper plate 100.

[0065] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A continuous casting crystallizer copper plate, characterized in that: It includes a copper plate body, a sealing part, a flow guiding cooling rib and a plurality of strip-shaped partitions; The front side of the copper plate body is a working side, and the back side is a cooling side; The sealing portion is arranged on the periphery of the cooling surface; Each of the partitions comprises a plurality of screw holes for connecting to the water tank and a reinforcing rib connecting two adjacent screw holes, which are spaced apart along the coolant flow direction; both ends of each of the partitions extend to the sealing portion, and a relatively independent cooling zone is formed between the sealing portion, the cooling surface and two adjacent partitions; a plurality of the partitions are spaced apart and parallel to the cooling surface in a direction perpendicular to the coolant flow direction; The guide cooling rib is arranged between two adjacent partitions along the coolant flow direction and is used to divide the cooling area formed between the two partitions into two cooling water tanks; The copper plate body forms a high temperature zone and a low temperature zone in sequence at both ends along the coolant flow direction; The width of at least a portion of the reinforcing ribs located in the high temperature zone is smaller than the width of the screw hole portion.

2. The continuous casting mold copper plate according to claim 1, characterized in that: Along a direction perpendicular to the coolant flow direction, the distances between any two adjacent partitions are equal.

3. The continuous casting mold copper plate according to claim 1, characterized in that: The width of at least a portion of the reinforcing ribs located in the low temperature zone is greater than the width of the screw hole portion.

4. The continuous casting mold copper plate according to claim 3, characterized in that: The height of the guide cooling rib relative to the cooling surface is lower than the height of the sealing portion relative to the cooling surface, and / or the height of the guide cooling rib relative to the cooling surface is lower than the height of the reinforcing rib relative to the cooling surface.

5. The continuous casting mold copper plate according to claim 3, characterized in that: Each of the reinforcing ribs located in the low temperature zone is provided with a keyway for cooperating with the pressure strip at the same position in the coolant flow direction; The width of the keyway provided on each of the reinforcing ribs is equal.

6. The continuous casting mold copper plate according to claim 5, characterized in that: The reinforcing rib with the key slot is also provided with a fixing screw hole so as to be fixed to the pressure strip by a fastener.

7. The continuous casting mold copper plate according to any one of claims 1 to 6, characterized in that: The working surface is funnel-shaped in the middle portion in a direction perpendicular to the coolant flow direction.

8. A continuous casting crystallization device, characterized in that: It comprises a strip and a continuous casting crystallizer copper plate as claimed in any one of claims 1 to 7; The profile of the insert matches the cooling surface and is fixed to the cooling surface via a pressure strip.

9. The continuous casting crystallization equipment according to claim 8, characterized in that: A water gap for cooling water to flow is formed between the insert strip and the cooling surface; Wherein, the contact surface of the inlay facing the coolant is parallel to the bottom surface of the cooling water tank.

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