Hot rolled coil rolling equipment and processing method based on quenching characteristics

Abstract

The present invention discloses a rolling production equipment and processing method for hot-rolled coils based on quenching characteristics, and mainly relates to the field of hot-rolled coil quenching treatment equipment. It includes a flattening structure assembly and a quenching structure assembly. The quenching structure assembly is arranged in cooperation with the flattening structure assembly to quench the hot-rolled steel flattened by the flattening structure assembly; the flattening structure assembly includes a rolling mechanism, through which the steel parts are rolled; the quenching structure assembly includes a traction guide mechanism and a cold liquid spraying mechanism, and the cold liquid spraying mechanism is arranged at the inner side of the traction guide mechanism. The beneficial effect of the present invention is that it can ensure that the hot-rolled coil produced can effectively perform the quenching operation during the quenching operation, and at the same time ensure that the quenching operation of the hot-rolled coil meets the quenching requirements, thereby making the produced hot-rolled coil meet the production requirements.

Description

Technical Field

[0001] The invention relates to the field of hot rolled coil quenching treatment equipment, in particular to rolling production equipment and a processing method for hot rolled coils based on quenching characteristics. Background Art

[0002] Quenching is a heat treatment process that heats steel to above the critical temperature, keeps it warm for a certain period of time, and then cools it at a rate greater than the critical cooling rate to obtain an unbalanced structure dominated by martensite (bainite can also be obtained or single-phase austenite can be maintained as needed). Quenching can greatly improve the rigidity, hardness, wear resistance, fatigue strength and toughness of steel, so as to meet the different use requirements of various mechanical parts and tools; quenching can also meet the special physical and chemical properties of certain special steels such as ferromagnetism and corrosion resistance. For common quenching methods, most of them use cooling liquid to spray and soak the heated steel parts, so that the temperature of the steel parts is reduced to meet the conditions for quenching the steel parts; there are high requirements for the required temperature state and workpiece state.

[0003] Because when hot-rolled steel coils are produced and processed, the high-temperature calcined steel blocks need to be extruded and flattened, so that the prepared hot-rolled steel coils are in a certain thickness state to meet the production requirements of hot-rolled coils. After the hot-rolled coils are in a certain thickness, the hot-rolled coils with higher temperatures need to be quenched, so that the hot-rolled coils produced have quenching properties, thereby meeting the production requirements of hot-rolled coils. However, it is different from the traditional quenching method of steel parts. When the traditional steel parts are quenched, the steel parts can be directly immersed in cooling liquid to achieve the quenching requirements of the steel parts; for hot-rolled coils, because they will be in an elongated state when they are extruded, and because the hot-rolled coils have not been quenched at this time, they do not have good bending properties, so the hot-rolled coils need to be quenched as a whole, which makes it more difficult to quench longer hot-rolled coils. Moreover, for steel parts, the best quenching method is to quench the hot-rolled coils during the extrusion stage, so as to minimize the contact with external air impurities to achieve the best quenching requirements.

[0004] Therefore, based on the above problems, a rolling production equipment and a processing method for hot rolled coils are set up based on the quenching characteristics. While the hot rolled coils are being extruded, the extruded hot rolled coils are quenched, and the produced hot rolled coils meet the quenching requirements, so that the produced hot rolled coils meet the performance of the steel parts after quenching. Summary of the invention

[0005] The object of the present invention is to provide a rolling production equipment and a processing method for hot rolled coils based on quenching characteristics, which can ensure that the hot rolled coils produced can effectively perform quenching operations during quenching operations, and at the same time ensure that the quenching operations of the hot rolled coils meet the quenching requirements, thereby making the produced hot rolled coils meet the production requirements.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A rolling production equipment for hot rolled coils based on quenching characteristics, comprising a flattening structure assembly and a quenching structure assembly, wherein the quenching structure assembly is arranged in cooperation with the flattening structure assembly to quench the hot rolled steel flattened by the flattening structure assembly;

[0008] The flattening structure assembly includes a roller mechanism, through which the steel piece is rolled, and position adjustment mechanisms are provided on both sides of the roller mechanism, and a pressure detection member is provided on the roller of the roller mechanism, and the horizontal position pressure information of the roller is monitored by the pressure detection member; when the pressure detection member detects the pressure information, the pressure information is transmitted to the position adjustment mechanism so that the position adjustment mechanism adjusts the position of the roller mechanism;

[0009] The quenching structure assembly includes a traction guide mechanism and a cold liquid spraying mechanism, wherein the cold liquid spraying mechanism is arranged at the inner side of the traction guide mechanism; the traction guide mechanism includes a guide shell and a guide roller, a driving shaft is arranged on the outer side of the guide shell, and the guide roller is axially rotatably arranged at the open end of the guide shell; when the hot-rolled piece contacts the guide roller of the traction guide mechanism, the guide roller drives the hot-rolled piece to approach the cold liquid spraying mechanism, and the cold liquid is sprayed on the hot-rolled piece through the cold liquid spraying mechanism.

[0010] The rolling mechanism includes at least two matching rolling rollers, and each of the rolling rollers is connected to a driving mechanism, through which the driving mechanism drives the multiple rolling rollers to rotate synchronously; position adjustment mechanisms are separately connected to the two end positions of the rolling rollers, and the position of the two end positions of the rolling rollers are adjusted respectively by the position adjustment mechanisms.

[0011] The pressure detecting member is fixedly arranged at one side of the rolling roller; the pressure detecting member comprises a contact member and a pressure sensing member, and the contact member and the pressure sensing member are connected via an elastic telescopic mechanism; the elastic telescopic mechanism comprises a telescopic link and a spring member, the fixed end of the telescopic link is fixedly arranged, and the telescopic end is connected to the contact member; the pressure sensing member is arranged at the fixed end position inside the telescopic link, and the spring member is arranged inside the telescopic link, so that the telescopic link is in an extended state.

[0012] The contact member includes a rolling contact member or a sliding contact member; the rolling contact member or the sliding contact member is in contact with the roller, and when the rolling contact member or the sliding contact member is in contact with the roller, the elastic telescopic mechanism is in a compressed state.

[0013] An angular velocity sensor is provided between the guide roller and the rotating shaft of the guide housing, and the angular velocity sensor is connected to a driving shaft connected to the outside of the guide housing, and data feedback is performed between the driving shaft.

[0014] A rotating base is provided at both ends of the inner side of the guide shell, the rotating shafts at both ends of the guide roller are mounted on the rotating base, and the rotation of the guide roller relative to the rotating base is realized through bearings; a pressure sensor is provided at the mounting position of the rotating base and the guide shell, and the pressure information applied by the rotating base to the pressure sensor is detected by the pressure sensor.

[0015] The cooling liquid spraying mechanism comprises an impact spraying mechanism and a quenching spraying mechanism. The impact spraying mechanism is arranged at the front end of the rolling mechanism; and the quenching spraying mechanism is arranged at the rear end of the rolling mechanism.

[0016] The impact spray mechanism includes an impact spray base and an impact spray member, the impact spray member is arranged on the impact spray base, and the hot rolled coil is impact sprayed by the impact spray member; the impact spray member includes a pre-spraying port and a rear-end spraying port, when the hot rolled coil passes through the impact spray mechanism, the pre-spraying port sprays the hot rolled coil and then transports it to the rear-end spraying port; the pre-spraying port includes a plurality of spiral atomizing nozzles, the plurality of spiral atomizing nozzles are arranged in an array on the impact spray base, and each of the spiral atomizing nozzles is individually connected to a transport pipeline , the cold liquid is transported to the spiral atomizing nozzle position through the delivery pipeline and then sprayed out; the rear end spray outlet is a slit spray outlet, and the rear end of the slit spray outlet is connected to a water distribution delivery shell; the water distribution delivery shell and the slit spray outlet are connected at a position where a plurality of water outlets are arranged, and the water distribution delivery shell is connected to a cold liquid inlet pipeline. When the cold liquid enters the water distribution delivery shell, it flows out from the plurality of water outlets of the water distribution delivery shell and enters the inside of the slit spray outlet at the same time; the impact spray base is connected to a rotating mechanism, and the inclination direction of the impact spray base is adjusted by the rotating mechanism.

[0017] The quenching spray mechanism includes a quenching spray base and a quenching spray member, the quenching spray member is arranged on the quenching spray mechanism, and the hot-rolled coil is quenched by the quenching spray member; the quenching spray member includes a plurality of cold liquid spray ports, and the plurality of cold liquid spray ports are arranged in a close fit on the quenching spray base, and each of the cold liquid spray ports is connected to a cold liquid delivery pipeline, and the hot-rolled coil is quenched after the cold liquid is delivered to the cold liquid spray port through the cold liquid delivery pipeline.

[0018] A method for processing a hot rolled coil rolling production equipment based on quenching characteristics comprises the following steps:

[0019] S1, when the calcined steel plate is conveyed by the conveying equipment to the impact spraying mechanism, the multiple spiral atomizing nozzles of the pre-spraying port of the impact spraying mechanism first spray the steel plate with cold liquid, and the steel plate continues to be conveyed by the conveying equipment;

[0020] S2, when the steel plate passes through the rear end spraying port of the impact spraying mechanism, the high-speed cold liquid sprayed from the rear end spraying port impacts the oxide scale on the surface of the hot-rolled coil, and the oxide scale on the surface of the steel plate is impacted and separated;

[0021] S3, the steel plate continues to be conveyed by the conveying device to the rolling mechanism, at which time the two rollers of the rolling mechanism rotate under the drive of the driving mechanism, and the steel plate passing between the two rollers is extruded and rolled into a hot-rolled coil;

[0022] S4, the pressure detection member in contact with the roller monitors the relative force between the roller and the pressure detection member to ensure that the relative position between the roller and the pressure detection member meets the rolling requirements;

[0023] S5, the steel plate after passing through the rolling mechanism is rolled into a coil. At this time, the coil delivered from the rolling mechanism is delivered to the guide roller, and a force is applied to the guide roller. The pressure sensor provided in conjunction with the guide roller detects the pressure information of the coil acting on the guide roller, ensuring that the pressure information of the guide roller acting on the pressure sensor meets the coil guiding requirements;

[0024] S6, when the pressure information between the guide roller and the rolling coil in step S5 does not meet the guiding requirement, the driving shaft drives the guide housing to adjust the angle until the pressure information between the rolling coil and the guide roller meets the guiding requirement;

[0025] S7, when the hot rolled coil passes through the guide roller and reaches the quenching spraying position, a plurality of cold liquid spraying ports spray cold liquid on the hot rolled coil passing through, so that the hot rolled coil is quenched.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This device realizes effective rolling of calcined steel plates by setting up a flattened structural assembly, because when the traditional roller mechanism performs extrusion rolling operation on the steel plate, there will be a problem of inconsistent thickness of the rolled coil after rolling due to a slight displacement of the roller position, thereby affecting the production thickness standard of the hot rolled coil. In this device, the change adjustment of the position of the roller mechanism is realized by setting up a pressure detection member and a position adjustment mechanism. The set pressure detection member can detect the force applied by the roller, so as to judge whether there is a position change between the roller and the pressure detection member through the force information, and adjust the position of the roller through the position adjustment mechanism to ensure the stability of the rolling of the coil.

[0028] This device achieves heat treatment of hot rolled coils before and after rolling through the quenching structure assembly. Since oxide scale will be formed on the surface of the hot rolled coil after calcination, the impact spraying mechanism can clean the oxide scale to avoid the oxide scale affecting the normal quenching operation of the subsequent hot rolled coil; and the quenching structure assembly can effectively quench the hot rolled coil to meet the requirements for its mechanical properties after quenching. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Attached Figure 1 It is a schematic diagram of the structure of the present invention.

[0030] Attached Figure 2 It is a schematic diagram of the structure of the present invention.

[0031] Attached Figure 3 It is a structural schematic diagram of the position of the roller mechanism of the present invention.

[0032] Attached Figure 4 It is a structural schematic diagram of the pressure detection component of the present invention.

[0033] Attached Figure 5 It is a cross-sectional view of the pressure detection member of the present invention.

[0034] Attached Figure 6 It is a structural schematic diagram of the impact spraying mechanism of the present invention.

[0035] Attached Figure 7 It is a partial structural schematic diagram of the impact spraying mechanism of the present invention.

[0036] Attached Figure 8 It is a cross-sectional view of the impact spraying mechanism of the present invention.

[0037] Attached Fig. 9 It is a structural schematic diagram of the traction guide mechanism of the present invention.

[0038] Attached Fig.10 It is a structural schematic diagram of the quenching spraying mechanism of the present invention.

[0039] Numbers shown in the accompanying drawings:

[0040] 1. Roller mechanism; 2. Position adjustment mechanism; 3. Pressure detection component; 4. Traction guide mechanism; 5. Guide shell; 6. Guide roller; 7. Drive shaft; 8. Sliding contact component; 9. Pressure sensing component; 10. Elastic telescopic mechanism; 11. Telescopic connecting rod; 12. Spring component; 13. Rolling contact component; 14. Angular velocity sensor; 15. Rotating base; 16. Pressure sensor; 17. Impact spray mechanism; 18. Quenching spray mechanism; 19. Impact spray base; 20. Impact spray component; 21. Pre-spraying port; 22. Rear spraying port; 23. Spiral atomizing nozzle; 24. Slit spraying port; 25. Water distribution and conveying shell; 26. Water outlet; 27. Quenching spray base; 28. Quenching spray component; 29. ​​Cold liquid spraying port. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0042] The present invention is a rolling production equipment for hot-rolled coils based on quenching characteristics, and the main structure includes a flattening structure assembly and a quenching structure assembly. The quenching structure assembly is arranged in cooperation with the flattening structure assembly to quench the hot-rolled steel flattened by the flattening structure assembly. For the flattening structure assembly arranged here, it is necessary to use it to flatten the hot-rolled coils, but in the flattening step, it is necessary to ensure that the hot-rolled coils are flattened to a certain size so that the steel coils can adapt to subsequent production requirements. As for the quenching structure assembly, the hot-rolled coils are quenched by the quenching structure assembly, so that the flattened hot-rolled coils meet the performance of the hot-rolled coils after quenching, thereby improving the strength and hardness of the hot-rolled coils. With respect to the traditional flattening and quenching steps, the present device performs the following structural improvements to solve the technical problems existing in the traditional hot-rolled coil processing steps:

[0043] Flat structure assembly:

[0044] For the hot-rolled coils to be processed and produced, the thickness of the hot-rolled coils must meet the production requirements, that is, to avoid the size problems of the hot-rolled coils produced. Because when the calcined steel plate is extruded, if the force applied to the steel plate is uneven, the thickness of the steel coil will be inconsistent; before the quenching operation, the rolled steel coils do not meet the steel coil size requirements required by the manufacturer, which will cause some disadvantages during use; and after the quenching operation, the mechanical properties of the hot-rolled coils change, resulting in inconsistent force levels for the steel coils of uneven size at the same length, which in turn makes the produced steel coils fail to meet normal use requirements. Therefore, in the rolling operation of the steel coils, it is necessary to ensure that the rolled steel coils are consistent in size, so as to provide a guarantee for the mechanical properties of the steel coils after quenching.

[0045] It includes a rolling mechanism 1, through which steel parts are rolled, and at the same time, position adjustment mechanisms 2 are arranged on both sides of the rolling mechanism 1, and pressure detection components 3 are arranged on the rollers of the rolling mechanism 1, and the horizontal position pressure information of the rollers is monitored by the pressure detection components 3; when the pressure detection component 3 detects the pressure information, the pressure information is transmitted to the position adjustment mechanism 2 and the position adjustment mechanism 2 adjusts the position of the rolling mechanism 1; the rolling mechanism 1 is a relatively common equipment for rolling steel plates, which is arranged by connecting two rollers to a motor, and the steel plate to be rolled is matched to the position between the two rollers. When the motor drives the two rollers to rotate synchronously, the two rollers squeeze the steel plate passing through the middle position, so that the steel plate is squeezed and thinned under the action of force, thereby realizing the rolling operation of the steel coil. Here, during the setting, the position adjustment mechanism 2 is set in cooperation with the rolling mechanism 1, so as to adjust the spacing distance between the two rolling rollers, so that the steel plate can be subjected to different forces when passing through the two rolling rollers, so as to adjust the thickness of the rolled steel coil; at the same time, the pressure detection component 3 is set in cooperation with the rolling roller, and the pressure information of the horizontal position of the rolling roller is detected by the set pressure detection component 3. When the pressure detection component 3 detects the pressure information, the pressure information is transmitted to the pressure detection component 3 and the pressure detection component 3 adjusts the position of the rolling mechanism 1. Then, when the pressure detection component 3 detects a change in the pressure information, the position adjustment mechanism 2 can be controlled to adjust the height position of the rolling roller, so that the rolling roller can exert an equivalent force on the steel coil, so that the size and thickness of the rolled steel coil are consistent.

[0046] The specific structure of the roller mechanism 1 is as follows: the roller mechanism 1 includes at least two matched rollers, and each roller is connected to a driving mechanism, through which the driving mechanism drives the multiple rollers to rotate synchronously; the position adjustment mechanism 2 is separately connected to the two ends of the roller, and the position of the two ends of the roller is adjusted by the position adjustment mechanism 2. The roller mechanism 1 that drives the two rollers to rotate synchronously by the driving mechanism is relatively common, and most of them are driven and connected by servo transmission. The synchronous rotation of the two rollers is achieved under the drive of the driving mechanism, and no more explanation is given here. At the same time, the two ends of the roller are separately connected to the position adjustment mechanism 2, and the height position of the two ends of the roller can be adjusted by the position adjustment mechanism 2, so that the relative position adjustment of the roller is more convenient. For the position adjustment mechanism 2 provided here: the position adjustment mechanism 2 includes a telescopic motor, and the two telescopic motors are connected to the same servo system, and the two telescopic motors are controlled by the servo system; so that the positions of the two ends of the roller can be accurately adjusted under the control of the servo system to ensure the accuracy of the height position adjustment of the roller.

[0047] Because when the rollers apply force to the steel plates, the steel plates need to be squeezed and rolled so that a coil that meets the production standards can be obtained. However, in the process of the rollers rolling the steel plates, because the rollers are also subjected to force, the position of the rollers will also be slightly different during the rolling operation, causing the distance between the two rollers to change. In the subsequent rolling operation of the steel plates, the unevenness of the steel coils will cause the thickness of the rolled coils to be inconsistent, so that the hot-rolled coils produced cannot meet the production requirements. Therefore, when the position of the rollers changes, it is necessary to adjust the position of the rollers as soon as possible to ensure that the thickness of the hot-rolled coils produced meets the production requirements without affecting the production efficiency.

[0048] The specific structural setting of the following pressure detection member 3 is performed:

[0049] The pressure detecting member 3 is fixedly arranged at one side of the rolling roller; the pressure detecting member 3 comprises a contact member 8 and a pressure sensing member 9, and the contact member 8 and the pressure sensing member 9 are connected via an elastic telescopic mechanism 10; the elastic telescopic mechanism 10 comprises a telescopic link 11 and a spring member 12, and the fixed end of the telescopic link 11 is fixedly arranged, and the telescopic end is connected to the contact member 8; the pressure sensing member 9 is arranged at the fixed end position inside the telescopic link 11, and the spring member 12 is arranged inside the telescopic link 11, so that the telescopic link 11 is in an extended state. For the pressure sensing member 9 provided here, a common pressure sensor 16 can be selected to achieve it. The main thing is to ensure the coordination between the contact member 8 and the pressure sensing member 9. When monitoring, the contact member 8 contacts the surface of the roller, and the spring member 12 is in a compressed state at this time, and transmits the pressure information to the pressure sensing member 9 provided inside the telescopic connecting rod 11, and the pressure sensing member 9 senses the value of the transmitted pressure information. Under normal circumstances, during the rotation of the roller, a certain vibration will be generated and transmitted to the pressure sensing member 9, so the pressure value of the pressure sensing member 9 will fluctuate within a certain range. When the position of the roller changes, the threshold range of the pressure information sensed by the pressure sensing member 9 will become larger or smaller as a whole, thereby proving that the roller has undergone a slight position change at this time, and then the pressure information is transmitted to the position adjustment mechanism 2, and the position of the roller is slightly adjusted by the position adjustment mechanism 2 to ensure that the hot-rolled coil produced by the gap between the two rollers meets the production requirements.

[0050] The contact member 8 is specifically configured as follows: the contact member 8 includes a rolling contact member 13 or a sliding contact member 8; for the rolling contact member 13 configured herein, the rolling contact member 13 is a contact roller, and the contact roller is in contact with the rolling roller; under normal circumstances, the spring member 12 applies a force to the telescopic end of the telescopic link 11, thereby generating a force between the contact roller and the rolling roller, and when the rolling roller rotates, the contact roller is driven to rotate at the same time, so that the contact roller can be in relatively stable contact with the rolling roller, thereby enabling the pressure sensing member 9 to monitor the relative distance between the two rolling rollers. As for the sliding contact member 8 provided here, the sliding contact member 8 is an arc surface slide groove, and the arc surface slide groove is provided in close contact with the roller; because when the roller is rolling, the roller itself will produce a certain vibration amplitude, so that the contact sliding roller will also jump to a certain amplitude when it contacts the roller; and the arc surface slide groove provided can be in close contact with the surface of the roller, so as to avoid a large change in the position between the arc surface slide groove and the roller due to the roller jumping, thereby making the monitoring effect of the pressure detection member 3 better. However, because when the roller rolls the calcined steel plate, oxides will be generated on the surface of the steel plate, which will adhere to the roller after being squeezed, and will be carried to the position of the arc surface slide groove with the rolling of the roller, so it is necessary to clean the attachments accumulated at the position of the arc surface slide groove at regular intervals to avoid damage to the parts.

[0051] After the rolling mechanism 1 rolls the steel plate, it is necessary to perform a reverse quenching operation on the steel coil. It should be noted that only when the size of the steel coil meets the quenching size requirements can the hot-rolled coil after quenching have the required mechanical properties. Most of the existing steel coil quenching equipment performs overall quenching on the entire hot-rolled coil to meet the quenching requirements of the hot-rolled coil. However, this method can only be achieved after the entire hot-rolled coil is rolled. In addition, during rolling, there will be a problem that the quenching effect of some rolling coils is not good due to the overall quenching, so that the local rolling coils of the hot-rolled coils cannot meet the specified quenching requirements, and thus the mechanical properties of the steel coils cannot be effectively achieved.

[0052] Quenching structure assembly:

[0053] It includes a traction guide mechanism 4 and a cold liquid spraying mechanism, and the cold liquid spraying mechanism is arranged at the inner side of the traction guide mechanism 4; the traction guide mechanism 4 includes a guide housing 5 and a guide roller 6, and a driving shaft 7 is arranged on the outer side of the guide housing 5, and the guide roller 6 is axially rotatably arranged at the open end of the guide housing 5; when the hot rolled piece contacts the guide roller 6 of the traction guide mechanism 4, the guide roller 6 drives the hot rolled piece to approach the cold liquid spraying mechanism, and the cold liquid spraying mechanism sprays the hot rolled piece with cold liquid. The traction guide mechanism 4 is used to traction and guide the hot rolled coil after rolling, so as to ensure that the hot rolled coil can be transported smoothly and stably, thereby ensuring that the hot rolled coil can be effectively quenched; the cold liquid spraying mechanism is used to treat the hot rolled coil with cold liquid, so as to ensure that the hot rolled coil can achieve the best quenching effect, thereby meeting the quenching requirements of hot rolled coil production.

[0054] Traction guide mechanism 4:

[0055] The production and processing of hot-rolled coils requires the roller mechanism 1 to extrude and roll the calcined steel plate into shape, and after the roller mechanism 1 rolls the steel plate, the hot-rolled coil needs to be quenched. However, under normal circumstances, after the roller mechanism 1 rolls the steel plate, it will continue to move toward the subsequent processing equipment following the traditional conveying mechanism. However, at this time, the hot-rolled coil is thinner and has a high plasticity. Therefore, in the subsequent conveying tasks, there will be a problem that the coil cannot be smoothly transported. At the same time, because the hot-rolled coil after extrusion rolling needs to be quenched, and when the hot-rolled coil is quenched, the hot-rolled coil itself needs to maintain a certain tension, so that the hot-rolled coil after quenching maintains a certain tension state to meet the use requirements of the hot-rolled coil. Therefore, the following is a specific structural setting of the traction guide mechanism 4:

[0056] The traction guide mechanism 4 includes a guide housing 5 and a guide roller 6. A driving shaft 7 is provided on the outside of the guide housing 5, and the guide roller 6 is axially rotatably provided at the open end of the guide housing 5. Here, the guide housing 5 is first connected by the driving shaft 7, and the main body inclination angle of the guide housing 5 can be adjusted by the driving shaft 7. At the same time, the guide roller 6 is provided at the open end of the guide housing 5, so that the roller mechanism 1 contacts the guide roller 6 after rolling the steel plate, and the hot-rolled coil is guided and pulled by the guide roller 6. When setting here, the guide housing 5 is driven to rotate by the driving shaft 7, so that there is an effective force between the guide roller 6 and the hot-rolled coil. Therefore, the following issues need to be considered here:

[0057] 1. It is necessary to ensure that the force between the hot-rolled coil and the guide roller 6 supports the traction of the hot-rolled coil on the guide roller 6. Because only when the force between the guide roller 6 and the hot-rolled coil is greater than a specified value, can the technical problem of no slipping between the guide roller 6 and the hot-rolled coil be ensured. If the force between the guide roller 6 and the hot-rolled coil is less than a certain value, the friction between the guide roller 6 and the hot-rolled coil cannot allow the synchronous displacement between the two, which leads to the problem of slipping of the hot-rolled coil relative to the guide roller 6, which is not conducive to the traction of the hot-rolled coil by the guide roller 6.

[0058] 2. It is necessary to ensure that the force between the hot-rolled coil and the guide roller 6 is less than a certain value. It should be understood that because the temperature of the hot-rolled coil itself is still relatively high after calcination, the plasticity of the hot-rolled coil is still relatively large in this case. Therefore, when quenching the hot-rolled coil, keeping the hot-rolled coil at a certain tension can better achieve the quenching performance of the hot-rolled coil. When the guide roller 6 pulls the hot-rolled coil, if there is no certain force between the two, the hot-rolled coil will not be able to be maintained in a certain tension state. At the same time, if the force applied by the guide roller 6 to the hot-rolled coil is too large, the hot-rolled coil will be over-pulled, so that the hot-rolled coil itself is pulled and stretched under the action of a large pulling force, thereby changing the shape and length of the hot-rolled coil, and cannot meet the subsequent quenching requirements of the hot-rolled coil.

[0059] Therefore, the following structure is set up to solve the above problems:

[0060] An angular velocity sensor 14 is provided between the guide roller 6 and the rotating shaft of the guide housing 5, and the angular velocity sensor 14 is connected to the driving shaft 7 connected to the outside of the guide housing 5, and data feedback is performed between the driving shaft 7. After the angular velocity sensor 14 is provided between the guide roller 6 and the rotating shaft of the guide housing 5, it is possible to determine whether the guide roller 6 is in a normal rotation state through the angular velocity sensor 14, because when a slip problem occurs between the guide roller 6 and the hot-rolled coil, the hot-rolled coil cannot effectively drive the guide roller 6 to rotate, so that the angular velocity sensor 14 detects abnormal rotation information of the guide roller 6, thereby proving the slip problem between the guide roller 6 and the hot-rolled coil. When the above problem occurs, data feedback is performed between the angular velocity sensor 14 and the driving shaft 7, so that the driving shaft 7 drives the guide housing 5 to rotate, thereby increasing the force between the guide roller 6 and the hot-rolled coil, thereby avoiding the slip problem between the guide roller 6 and the hot-rolled coil, so as to ensure that the guide roller 6 can effectively guide the hot-rolled coil.

[0061] A rotating base 15 is provided at both ends of the inner side of the guide housing 5, and the two ends of the guide roller are mounted on the rotating base 15, and the guide roller is rotated relative to the rotating base 15 through a bearing; a pressure sensor 16 is provided at the position where the rotating base 15 and the guide housing 5 are mounted, and the pressure information applied to the pressure sensor 16 by the rotating base 15 is detected by the pressure sensor 16. Fig. 9 As shown, the rotating base 15 is arranged in conjunction with the pressure sensor 16, so that the guide roller 6 can monitor the pressure value of the guide shell 5; under normal circumstances, the hot-rolled coil will exert a force on the guide roller 6, so that the guide roller 6 rotates following the movement of the hot-rolled coil, and when the driving shaft 7 drives the guide shell 5 to rotate, the relative position between the guide roller 6 and the hot-rolled coil changes, thereby causing the relative force between the guide roller 6 and the hot-rolled coil to change.

[0062] It should be noted here that if only the structure of the pressure sensor 16 is set up without the angular velocity sensor 14, in this case, the force between the hot-rolled coil and the guide roller 6 will be within the specified range, but there will be a relative slip problem between the guide roller 6 and the hot-rolled coil (that is, the guide roller 6 is locked and cannot effectively rotate following the movement of the hot-rolled coil). Therefore, it is necessary to set the angular velocity sensor 14 and the pressure sensor 16 separately here to ensure that the guide roller 6 effectively pulls and guides the hot-rolled coil.

[0063] Coolant spray mechanism:

[0064] For the traditional hot-rolled coil quenching operation, it is necessary to quench the rolled hot-rolled coil after the hot-rolled coil has completed the rolling task as a whole, so the hot-rolled coil quenching production line needs to be set to a longer length to meet the quenching requirements of a whole hot-rolled coil. This traditional hot-rolled coil quenching production line uses a conveying device to convey a whole hot-rolled coil to the bottom of the sprayed cold liquid, and sprays the cold liquid on the hot-rolled coil to achieve the quenching operation of the hot-rolled coil. However, the space occupied by this production line is very large, because the length of a whole hot-rolled coil can reach 100 meters, so the price of this equipment is also relatively high. And when spraying the cold liquid, in order to ensure the effective coverage of the quenching cold liquid, multiple cold liquid spraying positions will be set, but this quenching method requires a large amount of quenching cold liquid to be sprayed at the same time to ensure the effective coverage of the quenching cold liquid on the hot-rolled coil, which makes it difficult to recover the cold liquid.

[0065] Before the cold liquid spraying mechanism is used, a technical problem needs to be considered: because the overall temperature of the hot-rolled coil will be at a high state after calcination, so that the hot-rolled coil meets the heat treatment requirements of the steel coil. Because the steel coil will come into contact with oxygen in the air during calcination and subsequent extrusion rolling operations, in this case, the surface of the hot-rolled coil at a high temperature will come into contact with oxygen, so that an oxide layer, that is, iron oxide, is formed on the surface of the steel coil, but the iron oxide formed does not meet the requirements of subsequent quenching, because the quenching operation of the oxide layer cannot make the hot-rolled coil achieve the best quenching performance, so that the hot-rolled coil after quenching does not meet the production requirements. Moreover, the oxidizing physical properties of the iron formed on the surface of the hot-rolled coil are poor, and it is difficult to remove the oxide scale after the temperature of the hot-rolled coil is lowered, so it is necessary to remove the oxide layer when the temperature of the steel coil is high and before quenching, so that the hot-rolled coil can achieve the best quenching effect.

[0066] In this regard, the specific structure of the cooling liquid spraying mechanism is as follows:

[0067] The cold liquid spraying mechanism includes an impact spraying mechanism 17 and a quenching spraying mechanism 18. The impact spraying mechanism 17 is arranged at the front end of the rolling mechanism 1; and the quenching spraying mechanism 18 is arranged at the rear end of the rolling mechanism 1. Here, the impact spraying mechanism 17 is arranged at the front end of the rolling mechanism 1, and the oxide scale on the hot-rolled coil is removed before the hot-rolled coil is extruded and rolled, thereby avoiding the oxide scale being extruded and rolled into the inner layer of the hot-rolled coil after extrusion and rolling, which makes it inconvenient to clean the oxide scale of the hot-rolled coil again. The quenching spraying mechanism 18 is arranged at the rear end of the rolling mechanism 1 to ensure that the hot-rolled coil is sprayed with cold liquid by the quenching spraying mechanism 18 as soon as possible after the hot-rolled coil is extruded and rolled, thereby quickly realizing the quenching operation of the hot-rolled coil. Therefore, different structural settings are required for the above two different spraying mechanisms to achieve the setting requirements of the cold liquid spraying mechanism:

[0068] Impact spray mechanism 17:

[0069] Because the oxide scale formed on the surface of the hot-rolled coil after calcination is in an attached state, it mainly consists of ferrous oxide, ferroferric oxide, and ferrous oxide. From the inside to the outside: ferrous oxide, ferroferric oxide, and ferrous oxide. Among them, ferrous oxide has a loose structure and a weaker protective effect, while ferric oxide and ferrous oxide have a dense structure and better protective properties. Therefore, the connection between the oxide scale and the hot-rolled coil body is ferrous oxide. Because its structure is loose and its protective effect is weak, the oxide scale can be easily removed under the action of external force, thereby achieving the task of removing the outer oxide scale of the hot-rolled coil after calcination. Therefore, based on the characteristics of the above-mentioned hot-rolled coil oxide scale, the following structure is set:

[0070] The impact spray mechanism 17 includes an impact spray base 19 and an impact spray member 20. The impact spray member 20 is arranged on the impact spray base 19, and the hot-rolled coil is impact-sprayed by the impact spray member 20. The purpose of the impact spray base 19 is to install the impact spray member 20. At the same time, because the oxide scale on the hot-rolled coil needs to be impacted, after the impact spray member 20 is installed on the impact spray base 19, the impact spray direction of the impact spray member 20 should be opposite to the moving direction of the hot-rolled coil, so that the sprayed liquid can effectively act on the hot-rolled coil, so that the oxide scale on the hot-rolled coil can be effectively removed. The impact spraying member 20 is suitable for impact spraying the oxide scale on the hot-rolled coil. It should be considered that although the protective effect of the loose structure of ferrous oxide is weak, the hot-rolled coil will not obviously show the problem of loose structure when it is not subjected to external force. At the same time, because the temperature of the hot-rolled coil after calcination is high, it is not easy to amplify the problem of loose structure of ferrous oxide in this case, so the impact spraying member 20 is set as follows:

[0071] The impact spraying member 20 includes a pre-spraying port 21 and a rear-end spraying port 22. When the hot rolled coil passes through the impact spraying mechanism 17, the pre-spraying port 21 sprays the hot rolled coil and then transports it to the rear-end spraying port 22. When setting up here, the impact spraying member 20 is prevented from directly spraying and impacting the hot rolled coil, but the pre-spraying port 21 and the rear-end spraying port 22 are set. When the calcined steel plate (the hot rolled coil before calcination) passes through the impact spraying member 20, the pre-spraying port 21 first sprays the calcined steel plate with cold liquid, so that the steel plate at a relatively high temperature is cooled down. Because the oxide scale on the outer layer of the steel plate first contacts the cold liquid, the oxide scale at this time is cooled and shrunk, so that the ferrous oxide is loose, and cracks or even separation occurs between the oxide scale and the steel plate body. After the steel plate is sprayed with cold liquid through the pre-spraying port 21, it reaches the rear-end spraying port 22. At this time, the oxide scale on the outer layer of the steel plate has already shown cracking. After passing through the impact spraying through the rear-end spraying port 22 again, it is easier to impact and fall off the oxide scale on the steel plate, thereby ensuring a better oxide scale falling effect.

[0072] Regarding the specific structural setting of the pre-spraying port 21: the pre-spraying port 21 includes a plurality of spiral atomizing nozzles 23, which are arranged on the impact spraying base 19, and each of the spiral atomizing nozzles is individually connected to a delivery pipeline, through which the cold liquid is delivered to the position of the spiral atomizing nozzle 23 and then sprayed out; because the pre-spraying port 21 is mainly used to pre-cool the calcined steel plate, so that the oxide scale is cracked by cooling, and because the spraying range required by the pre-spraying port 21 should be wider, the oxide scale on the surface of the steel plate is pre-cooled in a larger range. Therefore, the spiral atomizing nozzle 23 is set here, and each spiral atomizing nozzle 23 is individually connected to a delivery pipeline, so as to cool the steel plate in a larger range, and the atomized spraying cold liquid forms a covering and superimposed spraying effect, thereby ensuring that the oxide scale on the surface of the steel plate is effectively pre-cooled and cracked, so as to facilitate the subsequent rear-end spraying port 22 to clean the oxide scale on the steel plate.

[0073] Regarding the specific structural setting of the rear end spray port 22: the rear end spray port 22 is a slit spray port 24, and the rear end of the slit spray port 24 is connected to a water distribution and conveying shell 25; because the required rear end spray port 22 needs to be applied to the steel plate with a large force, thereby impacting the oxide scale on the surface of the steel plate, so that the oxide scale on the surface of the steel plate is impacted and falls off; so the slit spray port 24 is set here, when the liquid is transported to the inside of the slit spray port 24, the liquid is squeezed in the slit spray port 24, so that the kinetic energy of the liquid is converted into potential energy, and when the liquid reaches the position of the slit spray port 24, the pressure is released at the moment of spraying outward through the slit spray port 24, so that the potential energy of the liquid is converted into kinetic energy, and then the oxide scale on the steel plate is impacted at a high speed, so that the oxide scale is more likely to fall off after being impacted at a high speed. At the same time, in order to increase the spraying flow rate, a plurality of water outlets 26 are provided at the connection position between the water distribution and conveying shell 25 and the slit spraying port 24, and the water distribution and conveying shell 25 is connected to the cold liquid inlet pipe. When the cold liquid enters the water distribution and conveying shell 25, it flows out from the plurality of water outlets 26 of the water distribution and conveying shell 25 and enters the inside of the slit spraying port 24 at the same time; the water flow in the water distribution and conveying shell 25 can flow outward at the plurality of water outlets 26 and squeeze into the slit spraying port 24 at the same time, thereby further increasing the potential energy in the slit spraying port 24, so that the liquid sprayed at the slit spraying port 24 has a larger flow rate and effectively acts on the oxide scale position of the steel plate.

[0074] The impact spray base 19 is connected with a rotating mechanism, and the tilting direction of the impact spray base 19 is adjusted by the rotating mechanism. Because the direction of the impact spray base 19 needs to be opposite to the moving direction of the hot-rolled coil, the angle of the impact spray base 19 is adjusted by setting the rotating mechanism, that is, the tilting angle of the impact spray member 20 is adjusted, so that the liquid sprayed by the impact spray member 20 can effectively act on the hot-rolled coil.

[0075] Quenching spray mechanism 18:

[0076] Because the quenching spray mechanism 18 needs to make the quenching liquid effectively act on the hot-rolled coil, the quenching spray mechanism 18 includes a quenching spray base 27 and a quenching spray member 28. The quenching spray member 28 is arranged on the quenching spray mechanism 18, and the hot-rolled coil is quenched by the quenching spray member 28; the quenching spray member 28 includes a plurality of cold liquid spraying ports 29, and the plurality of cold liquid spraying ports 29 are arranged on the quenching spray base 27, and each of the cold liquid spraying ports 29 is connected to a cold liquid delivery pipeline. After the cold liquid is delivered to the cold liquid spraying port 29 through the cold liquid delivery pipeline, the hot-rolled coil is quenched. Because the cold liquid spray mechanism directly sprays the cold liquid on the hot-rolled coil after the rolling mechanism 1 rolls the steel plate to generate the hot-rolled coil, the plurality of cold liquid spraying ports 29 can ensure that the quenching liquid effectively acts on the hot-rolled coil to ensure the quenching effect on the hot-rolled coil.

[0077] A method for processing a hot rolled coil rolling production equipment based on quenching characteristics comprises the following steps:

[0078] S1, when the calcined steel plate is conveyed by the conveying equipment to the position of the impact spraying mechanism 17, the multiple spiral atomizing nozzles 23 of the pre-spraying port 21 of the impact spraying mechanism 17 first spray the steel plate with cold liquid, and the steel plate continues to be conveyed by the conveying equipment;

[0079] S2, when the steel plate passes through the rear end spraying port 22 of the impact spraying mechanism 17, the high-speed cold liquid sprayed from the rear end spraying port 22 impacts the oxide scale on the surface of the hot-rolled coil, and the oxide scale on the surface of the steel plate is impacted and separated;

[0080] S3, the steel plate continues to be conveyed by the conveying device to the roller mechanism 1, at which time the two rollers of the roller mechanism 1 rotate under the drive of the driving mechanism, and the steel plate passing between the two rollers is extruded and rolled into a hot-rolled coil;

[0081] S4, the pressure detection member 3 in contact with the roller monitors the relative force between the roller and the pressure detection member 3 to ensure that the relative position between the roller and the pressure detection member 3 meets the rolling requirements;

[0082] S5, the steel plate after passing through the rolling mechanism 1 is rolled into a coil, and the coil delivered from the rolling mechanism 1 is delivered to the guide roller 6, and a force is applied to the guide roller 6, and the pressure sensor 16 provided in conjunction with the guide roller 6 detects the pressure information of the coil acting on the guide roller 6, ensuring that the pressure information of the guide roller 6 acting on the pressure sensor 16 meets the coil guiding requirements;

[0083] S6, when the pressure information between the guide roller 6 and the coil in step S5 does not meet the guiding requirement, the driving shaft 7 drives the guide housing 5 to adjust the angle until the pressure information between the coil and the guide roller 6 meets the guiding requirement;

[0084] S7, when the hot rolled coil passes through the guide roller 6 and reaches the quenching spraying part 28, a plurality of cold liquid spraying ports 29 spray cold liquid on the hot rolled coil passing through, so that the hot rolled coil is quenched.

[0085] Therefore, the rolling production equipment and processing method of the hot rolled coil are set up based on the quenching characteristics, and the hot rolled coil after extrusion is quenched while the hot rolled coil is extruded, and the produced hot rolled coil meets the quenching requirements, so that the produced hot rolled coil meets the performance of the steel part after quenching.

Claims

1. A rolling production equipment for hot rolled coils based on quenching characteristics, characterized in that: It includes a flattening structure assembly and a quenching structure assembly, wherein the quenching structure assembly is arranged at the flattening structure assembly position to quench the hot-rolled steel flattened by the flattening structure assembly; Flat structure assembly: The invention comprises a rolling mechanism (1), through which a steel piece is rolled, and position adjustment mechanisms (2) are arranged on both sides of the rolling mechanism (1), and a pressure detection component (3) is arranged on the rolling roller of the rolling mechanism (1), and the pressure detection component (3) is used to monitor the horizontal position pressure information of the rolling roller; when the pressure detection component (3) detects the pressure information, the pressure information is transmitted to the position adjustment mechanism (2) and the position adjustment mechanism (2) adjusts the position of the rolling mechanism (1); Quenching structure assembly: The invention comprises a traction guide mechanism (4) and a cold liquid spraying mechanism, wherein the cold liquid spraying mechanism is arranged at an inner side of the traction guide mechanism (4); the traction guide mechanism (4) comprises a guide housing (5) and a guide roller (6), the outer side of the guide housing (5) is provided with a driving shaft (7), and the guide roller (6) is axially rotatably arranged at an open end of the guide housing (5); when a hot-rolled piece contacts the guide roller (6) of the traction guide mechanism (4), the guide roller (6) drives the hot-rolled piece to approach the cold liquid spraying mechanism, and the cold liquid spraying mechanism sprays the hot-rolled piece with cold liquid; An angular velocity sensor (14) is provided on the guide roller (6) and connected to the rotating shaft of the guide housing (5), and the angular velocity sensor (14) is connected to a driving shaft (7) connected to the outside of the guide housing (5), and data feedback is performed between the driving shaft (7); A rotating base (15) is provided at both ends of the inner side of the guide housing (5), and the rotating shafts at both ends of the guide roller (6) are mounted on the rotating base (15), and the guide roller (6) is rotated relative to the rotating base (15) through a bearing member; A pressure sensor (16) is provided at the position where the rotating base (15) and the guide housing (5) are mounted, and the pressure information applied by the rotating base (15) to the pressure sensor (16) is detected by the pressure sensor (16); The roller mechanism (1) comprises at least two matched rollers, and each roller is connected to a driving mechanism, and the driving mechanism drives the plurality of rollers to rotate synchronously; Position adjustment mechanisms (2) are separately connected to both ends of the roller, and the positions of the two ends of the roller are adjusted respectively by the position adjustment mechanisms (2); The pressure detection component (3) is fixedly arranged at one side of the roller; the pressure detection component (3) comprises a contact component and a pressure sensing component (9), and the contact component and the pressure sensing component (9) are connected via an elastic telescopic mechanism (10); The elastic telescopic mechanism (10) comprises a telescopic link (11) and a spring member (12); the fixed end of the telescopic link (11) is fixedly arranged, and the telescopic end is connected to the contact member; the pressure sensing member (9) is arranged at the fixed end position inside the telescopic link (11), and the spring member (12) is arranged inside the telescopic link (11), so that the telescopic link (11) is in an extended state.

2. The rolling production equipment for hot rolled coils based on quenching characteristics according to claim 1, characterized in that: The contact element comprises a rolling contact element (13) or a sliding contact element (8); The rolling contact member (13) or the sliding contact member (8) is in contact with the roller, and when the rolling contact member (13) or the sliding contact member (8) is in contact with the roller, the elastic telescopic mechanism (10) is in a compressed state.

3. The rolling production equipment for hot rolled coils based on quenching characteristics according to claim 1, characterized in that: The cold liquid spraying mechanism comprises an impact spraying mechanism (17) and a quenching spraying mechanism (18); the impact spraying mechanism (17) is arranged at the front end position of the rolling mechanism (1); and the quenching spraying mechanism (18) is arranged at the rear end position of the rolling mechanism (1).

4. The rolling production equipment for hot rolled coils based on quenching characteristics according to claim 3, characterized in that: The impact spraying mechanism (17) comprises an impact spraying base (19) and an impact spraying member (20), wherein the impact spraying member (20) is arranged on the impact spraying base (19), and the hot rolled coil is impact sprayed by the impact spraying member (20); The impact spraying member (20) comprises a pre-spraying port (21) and a rear-end spraying port (22). When the hot-rolled coil passes through the impact spraying mechanism (17), the pre-spraying port (21) sprays the hot-rolled coil and then transports the hot-rolled coil to the rear-end spraying port (22). The pre-spraying port (21) comprises a plurality of spiral atomizing nozzles (23), the plurality of spiral atomizing nozzles (23) are arranged in an array on the impact spraying base (19), and each of the spiral atomizing nozzles (23) is individually connected to a delivery pipeline, through which the cold liquid is delivered to the position of the spiral atomizing nozzle (23) and then sprayed out; The rear end spraying port (22) is a slit spraying port (24), and the rear end of the slit spraying port (24) is connected to a water distribution and conveying housing (25); a plurality of water outlets (26) are provided at the connection position between the water distribution and conveying housing (25) and the slit spraying port (24), and the water distribution and conveying housing (25) is connected to a cold liquid inlet pipe, and when the cold liquid enters the water distribution and conveying housing (25), it flows out from the plurality of water outlets (26) of the water distribution and conveying housing (25) and enters the interior of the slit spraying port (24) at the same time; The impact spraying base (19) is connected to a rotating mechanism, and the tilting direction of the impact spraying base (19) is adjusted by the rotating mechanism.

5. The rolling production equipment for hot rolled coils based on quenching characteristics according to claim 4, characterized in that: The quenching spray mechanism (18) comprises a quenching spray base (27) and a quenching spray member (28), wherein the quenching spray member (28) is arranged on the quenching spray mechanism (18), and the hot-rolled coil is quenched by the quenching spray member (28); The quenching spraying member (28) comprises a plurality of cold liquid spraying ports (29), the plurality of cold liquid spraying ports (29) being arranged in close contact with the quenching spraying base (27), and each of the cold liquid spraying ports (29) being connected to a cold liquid delivery pipeline, and after the cold liquid is delivered to the cold liquid spraying port (29) through the cold liquid delivery pipeline, the hot rolled coil is quenched.

6. A method for processing a hot rolled coil rolling production equipment based on quenching characteristics, using the hot rolled coil rolling production equipment based on quenching characteristics as claimed in claim 5, characterized in that: The steps include: S1, when the calcined steel plate is conveyed by the conveying equipment to the position of the impact spraying mechanism (17), the multiple spiral atomizing nozzles (23) of the pre-spraying port (21) of the impact spraying mechanism (17) first spray the steel plate with cold liquid, and the steel plate continues to be conveyed by the conveying equipment; S2, when the steel plate passes through the rear end spraying port (22) of the impact spraying mechanism (17), the high-speed cold liquid sprayed from the rear end spraying port (22) impacts the oxide scale on the surface of the hot-rolled coil, thereby impacting and removing the oxide scale on the surface of the steel plate; S3, the steel plate continues to be conveyed by the conveying device to the rolling mechanism (1), at which time the two rollers of the rolling mechanism (1) rotate under the drive of the driving mechanism, and the steel plate passing between the two rollers is extruded and rolled to be a hot-rolled coil; S4, the pressure detection member (3) in contact with the roller monitors the relative force between the roller and the pressure detection member (3), ensuring that the relative position between the roller and the pressure detection member (3) meets the rolling requirements; S5, the steel plate after passing through the rolling mechanism (1) is rolled into a coil, and the coil delivered from the rolling mechanism (1) is delivered to the guide roller (6), and a force is applied to the guide roller (6), and a pressure sensor (16) provided in conjunction with the guide roller (6) detects pressure information of the coil acting on the guide roller (6), thereby ensuring that the pressure information of the guide roller (6) acting on the pressure sensor (16) meets the coil guiding requirements; S6, when the pressure information between the guide roller (6) and the rolling coil in step S5 does not meet the guidance requirements, the driving shaft (7) drives the guide housing (5) to adjust the angle until the pressure information between the rolling coil and the guide roller (6) meets the guidance requirements; S7, when the hot rolled coil passes through the guide roller (6) and reaches the quenching spraying part (28), a plurality of cold liquid spraying ports (29) spray cold liquid on the hot rolled coil passing through, so that the hot rolled coil is quenched.

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