Chamfered crystallizer narrow-surface copper plate for realizing uniform cooling

Abstract

The embodiment of the utility model provides a chamfered crystallizer narrow-face copper plate for realizing uniform cooling, and relates to the field of continuous casting equipment parts. The chamfered crystallizer narrow-surface copper plate for realizing uniform cooling comprises a flat plate part and a chamfered part which are connected with each other, wherein a first water seam is formed in the flat plate part, a second water seam and a third water seam are formed in the chamfer part, a communicating water channel is formed in the joint of the chamfer part and the flat plate part, the second water seam and the third water seam are communicated with the communicating water channel at the same time, and the communicating water channel and the first water seam are both used for being communicated with a water supply channel. In the working process, the second water seam and the third water seam are both communicated with the communication water channel, so that the water speed of the second water seam and the third water seam located at the chamfering part is fully ensured, the uniform cooling effect is provided, and the solidification and heat transfer uniformity of a chamfering blank is remarkably improved; the problems of longitudinal cracks and crack breakout of the chamfered blank easily occurring in high-pulling-speed continuous casting production are solved, smooth production is ensured, and the surface quality of the casting blank is improved.

Description

Technical Field

[0001] The utility model relates to the field of continuous casting equipment components, in particular to a chamfered crystallizer narrow surface copper plate for achieving uniform cooling. Background Art

[0002] During the operation of continuous casting equipment, the narrow copper plate of the chamfered crystallizer is usually used to contact the steel billet to cool it.

[0003] Due to the limitations of the existing water seam structure, the cooling water speed in the water seams on both sides of the chamfered parts is much lower than the cooling water speed in the flat plate part in the middle, and thus cannot provide a uniform cooling effect. As a result, the continuous casting production is prone to longitudinal cracks and crack leakage of chamfered billets, which affects the smooth production and reduces the surface quality of the billets. Utility Model Content

[0004] The utility model provides a chamfered crystallizer narrow copper plate for achieving uniform cooling, which can provide a uniform cooling effect, significantly improve the uniformity of solidification and heat transfer of the chamfered billet, help solve the problems of longitudinal cracks and crack leakage of the chamfered billet that are prone to occur in high-speed continuous casting production, ensure smooth production and improve the surface quality of the billet.

[0005] The embodiment of the present utility model can be implemented as follows:

[0006] An embodiment of the present utility model provides a chamfered narrow-surface copper plate for a crystallizer for achieving uniform cooling, comprising:

[0007] A connected flat plate portion and a chamfered portion;

[0008] Among them, the flat plate portion is provided with a first water gap, the chamfered portion is provided with a second water gap and a third water gap, and a connecting water channel is provided at the connection between the chamfered portion and the flat plate portion. The second water gap and the third water gap are simultaneously connected to the connecting water channel, and the connecting water channel and the first water gap are both used to connect the water supply channel.

[0009] Optionally, the width of the connecting water channel is W, where 3mm≤W≤10mm.

[0010] Optionally, the length of the connecting water channel is L, where 30mm≤L≤100mm.

[0011] Optionally, the cross-section of the connecting water channel is rectangular.

[0012] Optionally, the cross-section of the connecting water channel is trapezoidal.

[0013] Optionally, the number of the first water slits is at least three, and the at least three first water slits are arranged at equal intervals.

[0014] Optionally, the number of the second water gaps formed in the same chamfered portion is K, where 1≤K≤2.

[0015] Optionally, the extension length of the second water gap and the extension length of the third water gap are not less than the extension length of the first water gap.

[0016] Optionally, the chamfered narrow-face copper plate of the crystallizer for achieving uniform cooling comprises a back plate, a water supply pipe, and a drainage pipe, and the back plates are two and are respectively provided with the water supply channel and the drainage channel;

[0017] One end of the water supply channel is connected to the connecting water channel and one end of the first water gap at the same time, and the other end of the water supply channel is connected to the water supply pipe. One end of the drainage channel is connected to the connecting water channel and the other end of the first water gap at the same time, and the other end of the drainage channel is connected to the drainage pipe.

[0018] Optionally, the back panel includes a first section and a second section that are vertically connected, the first section is parallel to the flat plate portion, the ends of the two first sections that are close to each other are respectively connected to the water supply pipe and the drainage pipe, the ends of the two first sections that are far away from each other are respectively connected to the two second sections, and the top ends of the two second sections are simultaneously connected to the flat plate portion and the chamfered portion.

[0019] The beneficial effects of the chamfered narrow-side copper plate of the crystallizer for achieving uniform cooling according to the embodiment of the utility model include, for example:

[0020] The chamfered crystallizer is used to achieve uniform cooling, comprising a flat plate portion and a chamfered portion connected to the narrow copper plate of the chamfered crystallizer. The flat plate portion is provided with a first water slit, the chamfered portion is provided with a second water slit and a third water slit, and a connecting water channel is provided at the connection between the chamfered portion and the flat plate portion. The second and third water slits are simultaneously connected to the connecting water channel, and the connecting water channel and the first water slit are both used to connect to a water supply channel. During operation, by connecting the second and third water slits to the connecting water channel, sufficiently high water velocities are ensured in the second and third water slits located in the chamfered portion, providing a uniform cooling effect and significantly improving the uniformity of solidification and heat transfer of the chamfered billet. This helps to resolve the problems of longitudinal cracking and crack leakage in the chamfered billet, which are prone to occur in high-speed continuous casting production, ensuring smooth production and improving the surface quality of the billet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic cross-sectional view of a chamfered narrow-surface copper plate of a crystallizer for achieving uniform cooling provided in an embodiment of the present invention at a first viewing angle;

[0023] Figure 2 This is a cross-sectional schematic diagram of a chamfered narrow-surface copper plate of a crystallizer for achieving uniform cooling provided in an embodiment of the present utility model at a second viewing angle;

[0024] Figure 3 A schematic cross-sectional view of a chamfered narrow-surface copper plate of a crystallizer for achieving uniform cooling provided in an embodiment of the present invention from a third viewing angle;

[0025] Figure 4 This is a schematic diagram of the external structure of a chamfered narrow copper plate of a crystallizer for achieving uniform cooling provided in an embodiment of the present utility model.

[0026] Icons: 100 - chamfered narrow copper plate of the crystallizer for achieving uniform cooling; 110 - flat plate; 111 - first water gap; 120 - chamfered portion; 121 - second water gap; 122 - third water gap; 140 - connecting water channel; 160 - mounting hole; 170 - back plate; 171 - first section; 172 - second section; 180 - water supply pipe; 190 - drainage pipe. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] 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 claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0029] 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, it does not need to be further defined or explained in subsequent drawings.

[0030] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. 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. Therefore, it cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0032] The terms "comprises," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes 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. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0033] Unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0034] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0035] As mentioned in the background, during continuous casting, narrow copper plates on the chamfered mold surface are typically used to cool the billet. However, due to the existing water slot structure, the cooling water velocity in the chamfered sections on either side is significantly lower than that in the central flat section, preventing uniform cooling. This makes continuous casting prone to longitudinal cracking and steel leaks in the chamfered billet, hindering smooth production and reducing billet surface quality.

[0036] Please refer to Figure 1-Figure 3 The chamfered narrow-surface copper plate 100 for achieving uniform cooling provided in the embodiment of the present invention can solve the above-mentioned problem, which will be described in detail below.

[0037] The chamfered crystallizer narrow copper plate 100 for achieving uniform cooling includes a flat plate portion 110 and a chamfered portion 120 connected to each other; wherein, the flat plate portion 110 is provided with a first water gap 111, and the chamfered portion 120 is provided with a second water gap 121 and a third water gap 122. A connecting water channel 140 is provided at the connection between the chamfered portion 120 and the flat plate portion 110, and the second water gap 121 and the third water gap 122 are simultaneously connected to the connecting water channel 140, and the connecting water channel 140 and the first water gap 111 are both used to connect the water supply channel.

[0038] During operation, the second water gap 121 and the third water gap 122 are connected to the connecting water channel 140, thereby fully ensuring the water speed of the second water gap 121 and the third water gap 122 located in the chamfered portion 120, providing a uniform cooling effect, significantly improving the uniformity of solidification and heat transfer of the chamfered billet, and helping to solve the problems of longitudinal cracks and crack leakage of the chamfered billet that are prone to occur in high-speed continuous casting production, ensuring smooth production and improving the surface quality of the billet.

[0039] It is worth noting that in order to ensure that the second water gap 121 has a sufficient water speed as much as possible, the water entry area of ​​the second water gap 121 can be made no less than the water entry area of ​​the first water gap 111 and the third water gap 122, thereby facilitating the entry of water into the second water gap 121.

[0040] In this embodiment, the axial cross-section of the first water gap 111 is rectangular, with a curved bottom surface. The axial cross-section of the second water gap 121 is circular, and the axial cross-section of the third water gap 122 is also rectangular. That is, the first water gap 111 and the third water gap 122 can be considered rectangular water gaps, while the second water gap 121 can be considered a circular water gap. Of course, in other embodiments of the present invention, the cross-sectional shapes of the first water gap 111, the second water gap 121, and the third water gap 122 can also be fan-shaped, triangular, prismatic, or other shapes, and the specific cross-sectional shapes of the three are not limited.

[0041] In this embodiment, the narrow copper plate 100 of the chamfered crystallizer for achieving uniform cooling has two chamfered portions 120, which are respectively located on both sides of the flat plate portion 110, and the bottom surface of the chamfered portion 120 is flush with the bottom surface of the flat plate portion 110, and the top surface of the chamfered portion 120 protrudes from the end surface of the flat plate portion 110, and the height of the top surface of the chamfered portion 120 gradually decreases in the direction approaching the other chamfered portion 120 until it is connected to the top surface of the flat plate portion 110. The narrow copper plate 100 of the chamfered crystallizer for achieving uniform cooling can be regarded as a U-shaped structure.

[0042] Please refer to Figure 1-Figure 3 The cross-section of the connecting water channel 140 is rectangular; the width of the connecting water channel 140 can be W, wherein 3mm≤W≤10mm, and the length of the connecting water channel 140 can be L, wherein 30mm≤L≤100mm.

[0043] Specifically, the size of W can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., preferably W = 5mm, and there is no limitation on the specific size of W; similarly, the size of L can be 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, preferably L = 50mm, and there is no limitation on the specific size of L.

[0044] Of course, in other embodiments of the present invention, the cross-section of the connecting water channel 140 may also be a trapezoid, a triangle, a fan, or other shapes, and the specific cross-sectional shape of the connecting water channel 140 is not limited.

[0045] Please refer to Figure 1-Figure 3 In order to improve the overall cooling effect of the flat plate portion 110 , the number of the first water slots 111 may be at least three, and the at least three first water slots 111 may be arranged at equal intervals.

[0046] In this embodiment, the number of first water slits 111 is eight, and the eight first water slits 111 are equidistantly spaced and of equal length. Furthermore, the depth of the first water slits 111 on both sides is greater than the depth of the first water slit 111 in the middle. The first water slits 111 on both sides can be understood as first water slits 111 relatively close to the second water slit 121 or the third water slit 122, that is, the depth of the two first water slits 111 on both sides is greater than the depth of the six first water slits 111 in the middle, and the depths of the six first water slits 111 in the middle are equal. Of course, in other embodiments of the present invention, the number of first water slits 111 can also be three, six, nine, twelve, etc., and there is no limitation on the specific number of first water slits 111. Similarly, under the condition of basically satisfying cooling uniformity, the depth of all the first water gaps 111 can be made consistent, or the depth of the first water gap 111 located in the middle can be made greater than the depth of the first water gaps 111 located on both sides. There is no limitation on the relative depth relationship of the first water gaps 111 at different positions.

[0047] It's worth noting that to ensure effective cooling of the chamfered portion 120, the number of second water slots 121 defined within a single chamfered portion 120 can be set to K, where 1 ≤ K ≤ 2. In this embodiment, a single chamfered portion 120 defines one second water slot 121; however, in other embodiments of the present invention, a single chamfered portion 120 can also define two second water slots 121. For relatively large chamfered portions 120, to ensure uniform cooling of the large chamfered portion 120, K = 2, with the two second water slots 121 spaced apart and connected to the connecting water channel 140.

[0048] Please refer to Figure 1-Figure 3 The extension length of the second water gap 121 and the extension length of the third water gap 122 are not less than the extension length of the first water gap 111. Preferably, the extension length of the second water gap 121 can be equal to the extension length of the third water gap 122 and the extension length of the first water gap 111.

[0049] Please refer to Figure 4 In actual use, the chamfered narrow copper plate 100 for achieving uniform cooling should also include a back plate 170, a water supply pipe 180 and a drainage pipe 190. The back plates 170 are two and are respectively provided with a water supply channel and a drainage channel.

[0050] One end of the water supply channel is connected to the connecting water channel 140 and one end of the first water gap 111, and the other end of the water supply channel is connected to the water supply pipe 180. One end of the drainage channel is connected to the connecting water channel 140 and the other end of the first water gap 111, and the other end of the drainage channel is connected to the drainage pipe 190.

[0051] That is, it can be understood that the water supply channel is located at the lower side of one chamfered portion 120 , and the drainage channel is located at the lower side of the other chamfered portion 120 . The water supply pipe 180 is used to supply water through the water supply channel, and the drainage channel is used to drain water through the drainage pipe 190 .

[0052] In addition, the back panel 170 includes a first section 171 and a second section 172 that are vertically connected. The first section 171 is parallel to the flat plate portion 110. The ends of the two first sections 171 that are close to each other are respectively connected to the water supply pipe 180 and the drainage pipe 190. The ends of the two first sections 171 that are away from each other are respectively connected to the two second sections 172. The top ends of the two second sections 172 are simultaneously connected to the flat plate portion 110 and the chamfered portion 120.

[0053] Furthermore, the cross-sectional area of ​​the second section 172 is smaller than that of the first section 171. Therefore, although the first water slot 111 is directly connected to the water supply channel on the back plate 170, due to the limited cross-sectional area of ​​the second section 172, only a small section at the end of the first water slot 111 is accessible for water entry.

[0054] It is worth noting that in order to facilitate the disassembly and assembly of the back panel 170, a mounting hole 160 can be opened on the side of the flat panel part 110 close to the back panel 170, and a through hole or a blind hole corresponding to the mounting hole 160 can be opened on the back panel 170, and then a pin or bolt can be inserted into the mounting hole 160 and the through hole (or blind hole) to achieve a detachable connection between the flat panel part 110 and the back panel 170.

[0055] In summary, the chamfered mold narrow copper plate 100 for achieving uniform cooling provided by the embodiments of the present invention has at least the following advantages:

[0056] (1) By making the second water gap 121 and the third water gap 122 connected to the connecting water channel 140, it is fully ensured that the second water gap 121 and the third water gap 122 located in the chamfered portion 120 have a sufficiently high water speed, providing a uniform cooling effect, significantly improving the uniformity of solidification and heat transfer of the chamfered billet, and helping to solve the problems of longitudinal cracks and crack leakage of the chamfered billet that are prone to occur in high-speed continuous casting production, ensuring smooth production and improving the surface quality of the billet.

[0057] (2) By significantly increasing the water inlet area of ​​the second water gap 121, it is ensured that the cooling water speed of the second water gap 121 is not lower than the cooling water speed of the first water gap 111 and the cooling water speed of the third water gap 122, thereby providing a uniform cooling effect and reducing the negative impact on the growth of the shell.

[0058] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A chamfered mold narrow copper plate for achieving uniform cooling, characterized in that: include: A flat plate portion (110) and a chamfered portion (120) connected thereto; The flat plate portion (110) is provided with a first water slit (111), the chamfered portion (120) is provided with a second water slit (121) and a third water slit (130), a connecting water channel (140) is provided at the connection between the chamfered portion (120) and the flat plate portion (110), the second water slit (121) and the third water slit (130) are simultaneously connected to the connecting water channel (140), and the connecting water channel (140) and the first water slit (111) are both used to connect a water supply channel.

2. The chamfered mold narrow copper plate for achieving uniform cooling according to claim 1, characterized in that: The width of the communicating water channel (140) is W, wherein 3mm≤W≤10mm.

3. The chamfered mold narrow copper plate for achieving uniform cooling according to claim 1, characterized in that: The length of the communicating water channel (140) is L, wherein 30 mm ≤ L ≤ 100 mm.

4. The chamfered mold narrow copper plate for achieving uniform cooling according to claim 1, characterized in that: The cross section of the communicating water channel (140) is rectangular.

5. The chamfered mold narrow copper plate for achieving uniform cooling according to claim 1, characterized in that: The cross section of the communicating water channel (140) is trapezoidal.

6. The chamfered mold narrow copper plate for achieving uniform cooling according to any one of claims 1 to 5, characterized in that: The number of the first water slits (111) is at least three, and the at least three first water slits (111) are arranged at equal intervals.

7. The chamfered mold narrow copper plate for achieving uniform cooling according to any one of claims 1 to 5, characterized in that: The number of the second water gaps (121) formed in the same chamfered portion (120) is K, wherein 1≤K≤2.

8. The chamfered mold narrow copper plate for achieving uniform cooling according to any one of claims 1 to 5, characterized in that: The extension length of the second water gap (121) and the extension length of the third water gap (130) are not less than the extension length of the first water gap (111).

9. The chamfered mold narrow copper plate for achieving uniform cooling according to any one of claims 1 to 5, characterized in that: The chamfered crystallizer narrow copper plate for achieving uniform cooling further comprises a back plate (170), a water supply pipe (180) and a drainage pipe (190), wherein the back plates (170) are two and are respectively provided with the water supply channel and the drainage channel; One end of the water supply channel is simultaneously connected to the connecting water channel (140) and one end of the first water gap (111), and the other end of the water supply channel is connected to the water supply pipe (180). One end of the drainage channel is simultaneously connected to the connecting water channel (140) and the other end of the first water gap (111), and the other end of the drainage channel is connected to the drainage pipe (190).

10. The chamfered mold narrow copper plate for achieving uniform cooling according to claim 9, characterized in that: The back plate (170) comprises a first section (171) and a second section (172) connected vertically, wherein the first section (171) is parallel to the flat plate portion (110), and the ends of the two first sections (171) close to each other are respectively connected to the water supply pipe (180) and the drainage pipe (190), and the ends of the two first sections (171) away from each other are respectively connected to the two second sections (172), and the top ends of the two second sections (172) are simultaneously connected to the flat plate portion (110) and the chamfered portion (120).

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