Steel coil edge heating device and heating method

Abstract

The invention provides a steel coil edge heating device and method, and relates to the technical field of metallurgical equipment.The steel coil edge heating device comprises at least one edge heating unit, and each edge heating unit comprises a tensioning mechanism and a flexible heating chain; the flexible heating chain is arranged at the end, facing the steel coil, of the tensioning mechanism and is tensioned on the steel coil through the tensioning mechanism. The steel coil edge heating device and method provided by the invention have lower energy consumption and higher safety.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical equipment, and in particular to a steel coil edge heating device and a heating method. Background Art

[0002] In the metallurgical industry, silicon steel pickling is an important process in the silicon steel production process. However, after silicon steel pickling, the steel coil is prone to edge cracking during the unwinding stage. Therefore, edge heating devices need to be arranged on both sides of the steel coil during the unwinding stage to increase the edge temperature of the strip and avoid edge cracking.

[0003] In the prior art, the devices for heating steel coils include flame heating devices and steam heating devices. For example, an invention patent, a radiation heating device for preventing edge cracking when the strip is unrolled (publication number CN116274433A), includes a frame, an arc box, a heating unit array, an ignition mechanism, a flame detection mechanism, a displacement sensor and a mixed gas supply mechanism; the heating unit includes a shell, a porous medium panel, a secondary air distribution plate, a primary air distribution plate and a mixed gas inlet; the mixed gas supply mechanism includes a mixer, a mixing pipeline, a cut-off piece and an air distribution pipeline. The above-mentioned radiation heating device heats the steel coil through the heat radiation generated by the combustion of coal gas, and its energy consumption is relatively high; and due to the presence of open flames, there are great safety hazards. In addition, the curvature radius of the arc box of the radiation heating device that provides heat radiation to the steel coil cannot be changed. When the coil diameter of the steel coil changes, the heating of the steel coil by the radiation heating device will become uneven, affecting the heating effect.

[0004] In view of this, the inventor has designed a steel curl edge heating device and heating method based on many years of production design experience in this field and related fields and after repeated experiments, in order to solve the problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a steel curl edge heating device and a heating method, which have lower energy consumption and higher safety.

[0006] In order to achieve the above-mentioned purpose, the present invention proposes a steel coil edge heating device, wherein the steel coil edge heating device includes at least one edge heating unit, the edge heating unit includes a tensioning mechanism and a flexible heating chain, the flexible heating chain is arranged at one end of the tensioning mechanism facing the steel coil and is tensioned on the steel coil through the tensioning mechanism, the flexible heating chain tensioned on the steel coil can bend with the outer wall of the steel coil and adhere to the outer wall of the steel coil.

[0007] The present invention also proposes a method for heating the edge of a steel coil, which uses the steel coil edge heating device as described above to heat the steel coil, wherein a flexible heating chain is tensioned on the outermost circle of the steel coil by a tensioning mechanism, and the flexible heating chain wraps at least a portion of the steel coil in the circumferential direction of the steel coil and heats the steel coil.

[0008] Compared with the prior art, the present invention has the following characteristics and advantages:

[0009] The steel coil edge heating device and heating method proposed in the present invention have lower energy consumption and higher safety compared with the existing steel coil edge heating equipment and methods.

[0010] The steel coil edge heating device and heating method provided by the present invention can ensure that the steel coil is unrolled under the action of the covering pressure, and reduce cracking caused by uneven force on the steel plate to be unrolled. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0012] Figure 1 This is a schematic diagram of the structure of the steel coil edge heating device proposed by the present invention (I);

[0013] Figure 2 This is a schematic diagram of the structure of the steel coil edge heating device proposed by the present invention (II);

[0014] Figure 3 This is a schematic structural diagram of the heat transfer link group of the flexible heating chain in the present invention;

[0015] Figure 4 It is a cross-sectional view of the heat transfer link group of the flexible heating chain in the present invention;

[0016] Figure 5 It is a schematic diagram of the steel coil edge heating device of the present invention heating the steel coil edge when uncoiling;

[0017] Figure 6 It is a schematic diagram of the steel coil edge heating device of the present invention heating the steel coil edge after the coil diameter is reduced.

[0018] Description of Reference Numerals

[0019] 100. Steel coil edge heating device; 10. Edge heating unit;

[0020] 11. Tensioning mechanism; 111. Mounting frame;

[0021] 112. elastic reset component; 1121. reset block;

[0022] 1122. Connecting rod; 1123. Elastic component;

[0023] 113. Tensioning arm; 12. Flexible heating chain;

[0024] 121. heat transfer chain link assembly; 1211. heat transfer roller;

[0025] 1212, inner link plate; 1213, outer link plate;

[0026] 1214. Medium guide structure; 20. Longitudinal movement mechanism;

[0027] 21. Longitudinal drive component; 22. Frame;

[0028] 221, support; 222, guide rod;

[0029] 23. Guide rail; 30. Width adjustment mechanism;

[0030] 31. Width adjustment screw rod; 32. Width adjustment drive component;

[0031] 200, steel coil; 210, steel plate;

[0032] 300. Subsequent tension roller. DETAILED DESCRIPTION

[0033] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should all be considered to belong to the scope of the present invention.

[0034] like Figure 1 , Figure 2 As shown, the present invention proposes a steel coil edge heating device 100, which includes at least one edge heating unit 10, and the edge heating unit 10 includes a tensioning mechanism 11 and a flexible heating chain 12. The flexible heating chain 12 is arranged at one end of the tensioning mechanism 11 facing the steel coil 200 and is tensioned on the steel coil 200 through the tensioning mechanism 11. The flexible heating chain 12 tensioned on the steel coil 200 can bend with the outer wall of the steel coil 200 and adhere to the outer wall of the steel coil 200.

[0035] The steel coil edge heating device 100 proposed by the present invention heats the steel coil 200 through the flexible heating chain 12 of the edge heating unit 10. The flexible heating chain 12 stretched on the steel coil 200 can bend with the outer wall of the steel coil 200 and be attached to the outer wall of the steel coil 200. The flexible heating chain 12 attached to the steel coil 200 transfers heat to the steel coil 200 by heat conduction and radiation, effectively ensuring the heating effect of the steel coil 200; and for steel coils 200 of different specifications, the flexible heating chain 12 can keep its attachment state to the steel coil 200 as the coil diameter of the steel coil 200 changes accordingly, further ensuring the heating effect of the steel coil 200. At the same time, a part of the outer wall of the steel coil 200 is wrapped by the flexible heating chain 12, which also effectively prevents the steel coil 200 from unwinding.

[0036] In an optional embodiment of the present invention, the steel coil edge heating device 100 includes two edge heating units 10, and the two edge heating units 10 are arranged at intervals. With the above structure, the flexible heating chains 12 of the two edge heating units 10 are respectively attached to the two oppositely arranged edges of the outer ring of the steel coil 200, so that the two edges of the steel coil 200 are heated simultaneously.

[0037] In an optional embodiment of the present invention, Figure 3 , Figure 4 As shown, the flexible heating chain 12 includes a plurality of heat transfer link groups 121. Each heat transfer link group 121 includes two heat transfer rollers 1211 and two inner link plates 1212. The two inner link plates 1212 are arranged in parallel and spaced apart. The two heat transfer rollers 1211 are arranged side by side between the two inner link plates 1212. Both ends of each heat transfer roller 1211 respectively penetrate the two inner link plates 1212 and rotate in conjunction with the inner link plates 1212. Two adjacent heat transfer link groups 121 are connected by Two outer link plates 1213 are connected. Two ends of the outer link plate 1213 are respectively located outside the inner link plates 1212 of two adjacent heat transfer link groups 121. The end of each heat transfer roller 1211 is hinged to the outer link plate 1213. The interior of each heat transfer roller 1211 is hollow and forms a medium cavity. At least one end of each heat transfer roller 1211 is provided with a medium guide structure 1214. The medium guide structure 1214 guides the heat transfer medium into the medium cavity for heat exchange.

[0038] With the above structure, multiple heat transfer link groups 121 form a flexible chain structure similar to a traditional roller chain. Two adjacent heat transfer link groups 121 can swing relative to each other so that the flexible chain structure can wrap around the curved surface of the steel coil 200. When the entire flexible chain structure is attached to the outer surface of the steel coil 200, the steel coil 200 is heated by heat conduction, which not only adapts to the different curved shapes of the steel coil 200, but also ensures that the chain heat transfer device 100 has a good heat transfer effect on the steel coil 200. At the same time, the heat transfer roller 1211 of each heat transfer link group 121 is in the form of a roller. After the flexible heating chain 12 is tightened by a certain tension, the heat transfer roller 1211 rolls and heats the outer layer of the steel coil as it rotates with the unwinding power of the steel coil 200, ensuring the uniformity of heating the steel coil 200. At the same time, as the attachment time increases, the internal layers of the steel coil 200 will also have a certain temperature difference.

[0039] In an optional example of this embodiment, the width of the heat transfer roller 1211 can be set according to the specifications of the steel coil 200 and the heating range required by the process to ensure the heating effect on the steel coil 200.

[0040] In an optional embodiment of the present invention, the heat transfer medium enters the medium cavity through the medium guide structure 1214, and the heat transfer medium may be air, steam or circulating oil.

[0041] In actual work, different heat transfer media can be selected according to different needs. Furthermore, the heat transfer medium can be provided by the heat source recycled and reused during metallurgical production, which is more energy-saving and environmentally friendly. In addition, when the heat transfer medium heats the steel coil 200 through the heat conduction roller 1211, no open flame is involved, and the safety is also higher.

[0042] In an optional example of this embodiment, the heat transfer medium is air or steam, the medium guide structure 1214 is a medium introduction structure, and a plurality of diverging channels are provided on the heat transfer roller 1211, one end of each diverging channel opens to the inner wall of the heat transfer roller 1211, and the other end of each diverging channel opens to the outer wall of the heat transfer roller 1211. With the above structure, air or steam can flow directly into the air through the diverging channel without recovering the heat transfer medium.

[0043] In another optional example of this embodiment, the heat transfer medium is air, steam, or circulating oil, the medium guide structure 1214 is a medium introduction structure, and a medium outlet structure is provided at the other end of the heat transfer roller 1211. With the above structure, the heat transfer medium can be recovered through the medium outlet structure, which is suitable for the situation where the heat medium needs to be recovered.

[0044] In another optional example of this embodiment, the heat transfer medium is circulating oil, and the medium guide structure 1214 includes an oil inlet pipe and an oil return hood. The oil return hood is fixed on the outer link plate 1213. The interior of the oil return hood is hollow and forms an oil return chamber. The oil return chamber is connected to the medium chamber of the heat transfer roller 1211. One end of the oil inlet pipe is the oil inlet end, and the other end of the oil inlet pipe is the oil outlet end. The oil outlet end seal passes through the oil return hood and extends into the medium chamber. An oil return port connected to the oil return chamber is provided on the outer wall of the oil return hood. By adopting the above structure, the heat transfer medium is introduced through the oil inlet pipe and is discharged through the oil return hood. The oil inlet pipe extends into the medium cavity of the heat transfer roller 1211. The heat transfer medium enters the heat transfer roller 1211 through the oil inlet pipe, heats the inner surface of the heat transfer roller 1211, and then flows back from the same end of the heat transfer roller 1211 and enters the oil return hood. The heat transfer medium introduction function and the heat transfer medium discharge function are concentrated at one end of the heat transfer roller 1211, which greatly saves the space occupied by the flexible heating chain 12.

[0045] Furthermore, the oil return covers on the same outer link plate 1213 are designed in pairs, the oil return chambers of the two oil return covers are connected by a connecting pipeline, and an oil outlet is used to collect the return oil. The oil inlet end of the oil inlet pipe and the oil outlet of the oil return cover are equipped with auxiliary accessories, a rotating joint (not shown in the figure), to adapt to the relative swing of the oil inlet end of the oil inlet pipe and the oil outlet of the oil return cover after the flexible heating chain 12 fits the curved surface of the steel coil 200. At the same time, a rotating seal is provided between the outer link plate 1213 and the heat transfer roller 1211 to prevent leakage.

[0046] In an optional embodiment of the present invention, Figure 5 , Figure 6 As shown, the tensioning mechanism 11 includes a mounting frame 111, an elastic reset component 112 and two tensioning arms 113. The two tensioning arms 113 are symmetrically arranged, and the middle part of each tensioning arm 113 is hinged on the mounting frame 111. One end of the tensioning arm 113 is a driving end, and the other end of the tensioning arm 113 is a mounting end. The elastic reset component 112 is respectively connected to the driving ends of the two tensioning arms 113, and the two ends of the flexible heating chain 12 are respectively fixedly connected to the mounting ends of the two tensioning arms 113. When the flexible heating chain 12 fits the steel coil 200, the tensioning arm 113 moves with it, and the elastic reset component 112 applies tensioning force to the flexible heating chain 12 through the tensioning arm 113 to ensure that the flexible heating chain 12 can always fit on the steel coil 200.

[0047] In an optional example of this embodiment, the elastic reset component 112 includes a reset block 1121, two connecting rods 1122 and at least one elastic component 1123. The two connecting rods 1122 are respectively aligned with the two tensioning arms 113, one end of each connecting rod 1122 is hinged to the driving end of the tensioning arm 113, and the other end of each connecting rod 1122 is hinged to the reset block 1121. One end of the elastic component 1123 is connected to the mounting frame 111, and the other end of the elastic component 1123 is connected to the reset block 1121. With the above structure, the two connecting rods 1122 and the two tensioning arms 113 form a symmetrical four-connecting rod mechanism, and the flexible heating chain 12 is supported by the four-connecting rod mechanism. When the flexible heating chain 12 contacts the steel coil 200, the elastic component 1123 will adapt and provide tension.

[0048] In an optional example, the elastic component 1123 includes a guide rod and a spring, one end of the guide rod is fixedly connected to the reset block 1121, the mounting frame 111 is provided with a guide hole that matches the guide rod, the other end of the guide rod is inserted into the guide hole and can reciprocate along the axis of the guide hole, the spring is sleeved outside the guide rod, one end of the spring abuts against the reset block 1121, and the other end of the spring abuts against the mounting frame 111. When the flexible heating chain 12 contacts the steel coil 200, the flexible heating chain 12 bends with the curved surface of the steel coil 200, the distance between the two mounting ends decreases, the two tensioning arms 113 follow, the distance between the two driving ends increases, the two connecting rods 1122 also follow, the reset block 1121 moves toward the mounting frame 111 and compresses the spring, and the spring provides a reaction force for the reset block 1121.

[0049] In an optional embodiment of the present invention, the steel coil edge heating device 100 further includes a longitudinal movement mechanism 20, which is respectively connected to the two edge heating units 10 and drives the two edge heating units 10 to move closer to and away from the steel coil 200. The longitudinal movement mechanism 20 drives the two edge heating units 10 to move radially along the steel coil 200, and provides power for the flexible heating chain 12 to fit the steel coil 200 according to the change in the coil diameter of the steel coil 200, so as to ensure that the steel coil 200 is unwound under the action of the covering pressure, thereby reducing cracking caused by uneven force on the steel plate to be unwound. Specifically, the longitudinal movement mechanism 20 pushes the two edge heating units 10 to move toward the steel coil 200 until the flexible heating chain 12 wraps the steel coil 200 at a set wrap angle; as the uncoiler rotates to uncoil the steel coil 200, the longitudinal movement mechanism 20 advances as the coil diameter of the steel coil 200 changes, and the heat conduction roller 1211 of the flexible heating chain 12 rotates, while heating each layer of steel plates of the steel coil 200 in this state; after uncoiling is completed, the longitudinal movement mechanism 20 pushes the two edge heating units 10 to move away from the steel coil 200, and the flexible heating chain 12 unfolds under the action of the tensioning mechanism 11.

[0050] In an optional example of this embodiment, the longitudinal movement mechanism 20 includes a longitudinal movement driving component 21, a frame 22 and two guide rails 23, the two guide rails 23 are arranged in parallel and spaced apart, the two ends of the frame 22 are respectively slidably mounted on the two guide rails 23, the longitudinal movement mechanism 20 is connected to the frame 22 and drives the frame 22 to reciprocate along the guide rails 23, and the two edge heating units 10 are respectively arranged on the frame 22. With the above structure, the guide rails 23 are arranged along the radial direction of the steel coil 200, and the longitudinal movement driving component 21 pushes the frame 22 to move linearly along the guide rails 23, thereby driving the two edge heating units 10 on the frame 22 to approach and move away from the steel coil 200 along the radial direction of the steel coil 200.

[0051] In an optional example, the longitudinal movement driving component 21 is a hydraulic cylinder.

[0052] In an optional example of this embodiment, the steel coil edge heating device 100 further includes a width adjustment mechanism 30, which is respectively connected to the two edge heating units 10 and drives the two edge heating units 10 to move closer and farther away. The width adjustment mechanism 30 is used to adjust the distance between the two edge heating units 10, so that the spacing between the two edge heating units can be adjusted to adapt to the changes of steel coils 200 with different widths, thereby more accurately controlling the edge heating range of the steel coil 200.

[0053] In an optional example, supports 221 are respectively provided at both ends of the frame 22, at least one guide rod 222 is provided between the two supports 221, both ends of the guide rod 222 are respectively fixedly connected to the two supports 221, the two edge heating units 10 are respectively slidably installed on the guide rod 222, and the width adjustment mechanism 30 is respectively connected to the two edge heating units 10 and drives each edge heating unit 10 to reciprocate along the guide rod 222.

[0054] Furthermore, the width adjustment mechanism 30 includes at least two width adjustment screw rods 31, which are respectively aligned with two mounting frames 111, each width adjustment screw rod 31 is arranged parallel to the guide rod 222, one end of the width adjustment screw rod 31 is rotatably mounted on the support 221, and the other end of the width adjustment screw rod 31 passes through the corresponding mounting frame 111 and is threadedly engaged with the mounting frame 111. With the above structure, the mounting frame 111 is driven to move along the guide rod 222 by rotating the width adjustment screw rod 31, thereby achieving the adjustment of the position of the edge heating unit 10.

[0055] In an optional embodiment, the width adjustment mechanism 30 further includes a width adjustment driving component 32 .

[0056] In an optional example of this embodiment, the width adjustment mechanism includes two width adjustment drive components 32, and the two width adjustment drive components are matched with two width adjustment screw rods 31 in a one-to-one correspondence, and each width adjustment drive component 32 drives the corresponding width adjustment screw rod 31 to rotate.

[0057] In another optional example of this embodiment, the width adjustment mechanism includes a width adjustment drive component 32, which is respectively connected to two width adjustment screw rods 31. The spiral patterns on the two width adjustment screw rods 31 have opposite rotation directions. The width adjustment drive component 32 simultaneously drives the two width adjustment screw rods 31 to rotate, thereby realizing the centering opening and closing movement of the two mounting frames 111 along the guide rod 222, and then drives the edge heating unit 10 to move, so as to realize the adjustment corresponding to the roll width requirement.

[0058] Specifically, the width adjustment driving component 32 includes a width adjustment driving motor and two transmission components. The width adjustment driving motor is a double-headed driving motor with two output ends. The two output ends are connected to the two width adjustment screw rods 31 through two transmission components respectively.

[0059] Preferably, the transmission assembly may be a chain transmission assembly or a belt transmission assembly.

[0060] The present invention also provides a method for heating the edge of a steel coil, such as Figure 5 , Figure 6 As shown, the steel coil edge heating device 100 as described above is used to heat the steel coil 200, and the flexible heating chain 12 is tensioned on the steel coil 200 through the tensioning mechanism 11. The flexible heating chain 12 wraps at least a portion of the outermost circle of the steel coil 200 in the circumferential direction of the steel coil 200 and heats the outermost circle of the steel coil 200.

[0061] The steel coil edge heating method proposed in the present invention has lower energy consumption and is safer than the existing steel coil edge heating method.

[0062] The steel coil edge heating method proposed by the present invention can ensure that the steel coil is unrolled under the action of the covering pressure, thereby reducing cracking caused by uneven force on the steel plate to be unrolled.

[0063] Please refer to Figures 1 to 6 Now, the specific implementation process of the steel coil edge heating device 100 and the steel coil edge heating method proposed in the present invention will be described in detail in conjunction with an embodiment.

[0064] The flexible heating chain 12 is preheated under the action of the heat source;

[0065] According to the width of the steel coil 200, the width adjustment driving component 32 drives the two width adjustment screw rods 31 (the two width adjustment screw rods 31 are respectively left-handed and right-handed) to rotate, and the mounting frame 111 moves symmetrically toward the center under the guidance of the guide rod 222 to achieve the width adjustment function.

[0066] Under the action of the longitudinal driving component 21, the longitudinal movement mechanism 20 drives the frame 22 to move linearly along the guide rail 23, driving the width adjustment mechanism 30 and the flexible heating chain 12 mounted on the symmetrical tensioning mechanism 11 to move toward the steel coil 200, and relying on the elastic reset component 112 on the tensioning mechanism 11 to provide a reaction force to the two tensioning arms 113, so that the flexible heating chain 12 can wrap the edge of the steel coil 200 and provide heat energy to the steel coil 200, thereby realizing the edge heating function of the steel coil 200.

[0067] As the uncoiling process proceeds, the coil diameter of the steel coil 200 gradually decreases, and the longitudinal movement mechanism 20 moves according to the designed position based on calculation, ensuring that the flexible heating chain 12 covers the steel coil 200 and that an angle space is formed between the steel plate 210 of the steel coil 200 and the subsequent tension roller 300.

[0068] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. A steel coil edge heating device, characterized in that: The steel coil edge heating device includes at least one edge heating unit, and the edge heating unit includes a tensioning mechanism and a flexible heating chain. The flexible heating chain is arranged at one end of the tensioning mechanism facing the steel coil and is tensioned on the steel coil through the tensioning mechanism. The flexible heating chain tensioned on the steel coil can bend with the outer wall of the steel coil and adhere to the outer wall of the steel coil.

2. The steel curling edge heating device according to claim 1, characterized in that: The flexible heating chain includes a plurality of heat transfer link groups. Each heat transfer link group includes two heat transfer rollers and two inner chain plates. The two inner chain plates are arranged in parallel and spaced apart. The two heat transfer rollers are arranged side by side between the two inner chain plates. Two ends of each heat transfer roller respectively penetrate the two inner chain plates and are rotatably matched with the inner chain plates. Two adjacent heat transfer link groups are connected by two outer chain plates. Two ends of the outer chain plates are respectively located outside the inner chain plates of the two adjacent heat transfer link groups. The interior of each heat transfer roller is hollow and forms a medium cavity. At least one end of each heat transfer roller is provided with a medium guide structure. The medium guide structure guides the heat transfer medium into the medium cavity for heat exchange.

3. The steel curling edge heating device according to claim 2, characterized in that: The tensioning mechanism includes a mounting frame, an elastic reset component and two tensioning arms. The two tensioning arms are symmetrically arranged, and the middle part of each tensioning arm is hinged on the mounting frame. One end of the tensioning arm is a driving end, and the other end of the tensioning arm is a mounting end. The elastic reset component is respectively connected to the driving ends of the two tensioning arms, and the two ends of the flexible heating chain are respectively fixedly connected to the mounting ends of the two tensioning arms.

4. The steel curling edge heating device according to claim 3, characterized in that: The steel coil edge heating device comprises two edge heating units, and the two edge heating units are arranged in parallel and at intervals.

5. The steel curling edge heating device according to claim 4, characterized in that: The steel coil edge heating device also includes a longitudinal movement mechanism, which is respectively connected to the two edge heating units and drives the two edge heating units to approach and move away from the steel coil.

6. The steel curling edge heating device according to claim 5, characterized in that: The longitudinal movement mechanism includes a longitudinal movement driving component, a frame and two guide rails. The two guide rails are arranged in parallel and spaced apart. The two ends of the frame can be slidably installed on the two guide rails. The longitudinal movement mechanism is connected to the frame and drives the frame to reciprocate along the guide rails. The two edge heating units are respectively arranged on the frame.

7. The steel curling edge heating device according to claim 6, characterized in that: The steel coil edge heating device also includes a width adjustment mechanism, which is respectively connected to the two edge heating units and drives the two edge heating units to move closer to and away from each other.

8. The steel curling edge heating device according to claim 7, characterized in that: Supports are respectively provided at both ends of the frame, at least one guide rod is provided between the two supports, both ends of the guide rod are respectively fixedly connected to the two supports, the two edge heating units are respectively slidably mounted on the guide rods, and the width adjustment mechanism is respectively connected to the two edge heating units and drives each edge heating unit to reciprocate along the guide rod.

9. The steel curling edge heating device according to claim 8, characterized in that: The width adjustment mechanism includes at least two width adjustment screw rods, which are respectively aligned with the two mounting frames, and each width adjustment screw rod is arranged parallel to the guide rod. One end of the width adjustment screw rod is rotatably mounted on the support, and the other end of the width adjustment screw rod passes through the corresponding mounting frame and is threadedly engaged with the mounting frame.

10. A method for heating the edge of a steel coil, using the steel coil edge heating device according to claim 1 to heat the steel coil, characterized in that: The flexible heating chain is tensioned on the outermost circle of the steel coil by a tensioning mechanism, and the flexible heating chain wraps at least a part of the steel coil in the circumferential direction of the steel coil and heats the steel coil.

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