Temperature compensation system for rolling rolls of a rolling plant, method and related plant

Abstract

This invention relates to the field of metal rolling technology, specifically disclosing a temperature compensation system, method, and related equipment for rolling mill rolls. The temperature compensation system includes an electromagnetic heating head disposed on the outside of the rolling mill roll; a first driving mechanism for driving the electromagnetic heating head to move along a direction parallel to the rolling mill roll axis; a temperature measuring component for measuring the surface temperature information of the rolling mill roll; and a controller for obtaining the low-temperature position of the rolling mill roll based on the surface temperature information. The controller also controls the first driving mechanism to move the electromagnetic heating head to the outside of the low-temperature position and perform heating compensation on the low-temperature position. This temperature compensation system can determine the low-temperature positions requiring heating compensation based on the surface temperature information measured by the temperature measuring component, and control the first driving mechanism to move the electromagnetic heating head to the outside of the low-temperature position during the rotation of the rolling mill roll to perform heating compensation on these low-temperature positions, effectively improving the temperature uniformity of the rolling mill roll.

Description

Technical Field

[0001] This application relates to the field of metal rolling technology, and more specifically, to a temperature compensation system, method, and related equipment for rolling rolls of a rolling mill. Background Technology

[0002] Metal rolling process uses internally heated rolling rolls to roll metal, so that the metal material can be heated and softened during the rolling process.

[0003] However, internally heated rolling rolls generally suffer from uneven heating. Due to heat transfer, the rolling rolls will have a high temperature in the middle and a low temperature at the edges, resulting in the rolled metal material also having a high temperature in the middle and a low temperature at the edges. This causes stress concentration at the edges of the metal material, which can lead to internal cracks in the metal material, or even edge cracks or strip breaks, thus affecting the rolling quality of the finished product. Summary of the Invention

[0004] The purpose of this application is to provide a heating system, method and related equipment for the rolling rolls of a rolling mill, so as to heat and compensate for the low temperature part, and avoid uneven temperature of the rolling rolls, which would lead to stress concentration and affect the rolling quality of the metal workpiece.

[0005] In a first aspect, this application provides a temperature compensation system for rolling rolls of a rolling mill, used to compensate for the temperature of the rolling rolls, the temperature compensation system comprising:

[0006] An electromagnetic heating head is disposed on the outside of the rolling roll;

[0007] The first driving mechanism is used to drive the electromagnetic heating head to move in a direction parallel to the axis of the rolling roll;

[0008] A temperature measuring component is used to measure the surface temperature information of the rolling roll;

[0009] A controller is used to obtain the low-temperature position of the rolling roll based on surface temperature information;

[0010] The controller is also used to control the first drive mechanism to drive the electromagnetic heating head to move to the outside of the low temperature position and to heat the low temperature position.

[0011] The temperature compensation system of the rolling mill roll of this application can determine the low-temperature position that needs to be heated and compensated based on the surface temperature information measured by the temperature measuring component, and control the first drive mechanism to drive the electromagnetic heating head to move to the outside of the low-temperature position during the rotation of the rolling mill roll to heat and compensate these low-temperature positions. This effectively improves the temperature uniformity of the rolling mill roll and avoids the stress concentration caused by uneven rolling mill roll temperature, which affects the rolling quality of metal workpieces.

[0012] Secondly, this application also provides a method for replenishing the temperature of rolling rolls in a rolling mill, applied in a rolling roll replenishment system of a rolling mill, the rolling roll replenishment system of the rolling mill comprising:

[0013] An electromagnetic heating head is disposed on the outside of the rolling roll;

[0014] The first driving mechanism is used to drive the electromagnetic heating head to move in a direction parallel to the axis of the rolling roll;

[0015] A temperature measuring component is used to measure the surface temperature information of the rolling roll;

[0016] The method for replenishing the temperature of the rolling rolls in the rolling equipment includes the following steps:

[0017] The low-temperature position of the rolling roll is obtained based on the surface temperature information;

[0018] The first driving mechanism is controlled to drive the electromagnetic heating head to move to the outside of the low-temperature position and to heat the low-temperature position.

[0019] The temperature compensation method for the rolling rolls of the rolling equipment disclosed in this application can determine the low-temperature locations that need to be heated and compensated based on the surface temperature information measured by the temperature measuring component. During the rotation of the rolling rolls, the first driving mechanism is controlled to drive the electromagnetic heating head to move to the outside of the low-temperature locations to heat and compensate for these low-temperature locations. This effectively improves the temperature uniformity of the rolling rolls and avoids the stress concentration caused by uneven rolling roll temperature, which would affect the rolling quality of the metal workpiece.

[0020] The method for temperature compensation of the rolling rolls in the rolling equipment, wherein the step of obtaining the low-temperature position of the rolling rolls based on surface temperature information includes:

[0021] A temperature distribution map is generated based on surface temperature information;

[0022] The low-temperature location is obtained by analyzing the temperature distribution map.

[0023] The method for replenishing the temperature of the rolling rolls in the rolling equipment, wherein the step of heating and replenishing the temperature at the low-temperature location includes:

[0024] The heating power of the electromagnetic heating head is adjusted according to the temperature information at the low-temperature location to heat and compensate for the low-temperature location.

[0025] The temperature compensation method for the rolling rolls in this application involves adjusting the heating power of the electromagnetic heating head based on the temperature information at the low-temperature location during the heating compensation process. This alters the heating efficiency of the electromagnetic heating head, allowing it to generate varying degrees of temperature rise on the rolling roll surface within a limited heating time. The heating compensation is then based on the actual temperature at the low-temperature location, effectively improving the heating compensation rate and the accuracy of temperature regulation. This ensures that the low-temperature location on the rolling roll surface can quickly and accurately return to the temperature required for the metal rolling process, thereby improving the uniformity of the rolling roll surface temperature.

[0026] The method for replenishing the temperature of the rolling rolls in the rolling equipment, wherein the step of controlling the first driving mechanism to drive the electromagnetic heating head to move to the outside of the low-temperature position includes:

[0027] The location of the low temperature to be compensated for is determined based on the temperature distribution map and the low temperature location;

[0028] A movement path is generated based on the low-temperature location to be compensated for and the relative position of the electromagnetic heating head in the temperature distribution map;

[0029] Based on the moving path and the rotation speed of the rolling roll, the first driving mechanism is controlled to drive the electromagnetic heating head to move to the outside of the low-temperature position to be compensated for.

[0030] This example determines the movement path based on the distribution of low-temperature locations on the temperature distribution map and then manipulates the electromagnetic heating head to its position. This ensures that the heating and temperature replenishment process is carried out in an orderly and timely manner. Furthermore, by comprehensively analyzing and planning all low-temperature locations on the temperature distribution map, it can ensure that the movement path can effectively cover the low-temperature locations that need temperature replenishment.

[0031] The method for replenishing the temperature of the rolling rolls in the rolling equipment, wherein the step of determining the low-temperature location to be replenished based on the temperature distribution map and the low-temperature location includes:

[0032] The search range is determined based on the temperature distribution map and the relative position of the electromagnetic heating head on the temperature distribution map;

[0033] The search range is used to search for the low-temperature location, and the low-temperature location that is closest to the relative position of the electromagnetic heating head on the temperature distribution map is obtained as the low-temperature location to be compensated for.

[0034] The method for replenishing the temperature of the rolling rolls in the rolling equipment, wherein the step of searching for the low-temperature position within the search range and obtaining the low-temperature position closest to the relative position of the electromagnetic heating head in the temperature distribution map as the low-temperature position to be replenished includes:

[0035] The search range is used to search for the low-temperature position and obtain the low-temperature position that is closest to the electromagnetic heating head in the temperature distribution map in terms of longitudinal distance. If there are multiple low-temperature positions that are closest in longitudinal distance, the low-temperature position with the lowest temperature among the multiple low-temperature positions is taken as the low-temperature position to be heated.

[0036] The method for temperature compensation of the rolling rolls of the rolling equipment, wherein the temperature distribution map is a grid map based on temperature division.

[0037] Thirdly, this application also provides an electronic device, including a processor and a memory, the memory storing computer-readable instructions that, when executed by the processor, perform the steps of the method provided in the second aspect above.

[0038] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the steps of the method provided in the second aspect above.

[0039] As can be seen from the above, this application provides a temperature compensation system, method, and related equipment for the rolling rolls of a rolling mill. The temperature compensation system for the rolling rolls of the rolling mill can determine the low-temperature locations that need to be heated and compensated based on the surface temperature information measured by the temperature measuring component. During the rotation of the rolling roll, the system controls the first driving mechanism to drive the electromagnetic heating head to move to the outside of the low-temperature location to heat and compensate for these low-temperature locations. This effectively improves the temperature uniformity of the rolling roll and avoids the stress concentration caused by uneven rolling roll temperature, which would affect the rolling quality of the metal workpiece. Attached Figure Description

[0040] Figure 1 A schematic diagram of the structure of the temperature compensation system for the rolling rolls of the rolling equipment provided in the embodiments of this application.

[0041] Figure 2 This is a schematic diagram of the installation structure of the electromagnetic heating head.

[0042] Figure 3 This is a cross-sectional view of the electromagnetic heating head.

[0043] Figure 4 This is a schematic diagram of the electromagnetic heating head from below.

[0044] Figure 5 A schematic diagram of the electrical control structure of the temperature compensation system for the rolling rolls of the rolling equipment provided in this application embodiment.

[0045] Figure 6 A flowchart illustrating a method for replenishing the temperature of rolling rolls in a rolling mill provided in an embodiment of this application.

[0046] Figure 7 This is a schematic diagram of the temperature distribution.

[0047] Figure 8 This is a schematic diagram for generating a movement path in a temperature distribution map.

[0048] Figure 9 This is a schematic diagram of a cold temperature graph.

[0049] Figure 10 This is a schematic diagram of a temperature distribution map generated based on a cold temperature map.

[0050] Figure 11 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0051] Reference numerals: 1. Frame; 2. Electromagnetic heating head; 3. First drive mechanism; 4. Rolling roll; 5. Temperature measuring component; 6. Controller; 21. U-shaped magnetic core; 22. Induction coil; 23. Potting compound; 24. Cooling mechanism; 301. Processor; 302. Memory; 303. Communication bus. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0053] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Firstly, please refer to Figures 1-5 Some embodiments of this application provide a heating system for the rolling rolls of a rolling mill, used to heat the rolling rolls 4. The heating system includes:

[0055] The electromagnetic heating head 2 is located on the outside of the rolling roll 4;

[0056] The first driving mechanism 3 is used to drive the electromagnetic heating head 2 to move in a direction parallel to the axis of the rolling roll 4;

[0057] Temperature measuring component 5 is used to measure the surface temperature information of rolling roll 4;

[0058] Controller 6 is used to obtain the low temperature position of rolling roll 4 based on surface temperature information;

[0059] The controller 6 is also used to control the first drive mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low temperature position and to heat the low temperature position.

[0060] Specifically, the electromagnetic heating head 2, the first driving mechanism 3, and the temperature measuring component 5 are all electrically connected to the controller 6, so that the controller 6 can obtain the surface temperature information measured by the temperature measuring component 5 and issue corresponding control commands to control the operation of the first driving mechanism 3 and the electromagnetic heating head 2.

[0061] More specifically, the rolling mill roll temperature compensation system of the rolling mill roll in this embodiment of the application is used to locally heat the edge of the rolling mill roll 4 to achieve temperature compensation treatment. It can heat these low-temperature positions to achieve temperature compensation when the low-temperature position of the rolling mill roll 4 is determined. The low-temperature position is the position where the surface temperature of the rolling mill roll 4 is lower than the temperature required by the corresponding metal rolling process.

[0062] More specifically, during metal rolling, the temperature measuring component 5 is set in a fixed position. While the rolling roll 4 is continuously rotating, the fixedly set temperature measuring component 5 can detect and obtain the surface temperature of different positions of the rolling roll 4 based on a single direction, thereby realizing circumferential surface temperature detection of the rolling roll 4 to obtain surface temperature information that can characterize the temperature distribution at different positions of the rolling roll 4.

[0063] More specifically, the surface temperature information is temperature data that reflects the temperature distribution at different locations on the surface of the rolling roll 4. Since the low-temperature locations of the rolling roll 4 generally only appear on the edges, the surface temperature information includes temperature data at least at multiple locations on the edges.

[0064] More specifically, the rolling mill roll temperature compensation system of the rolling mill equipment in this embodiment is used to heat and compensate for the temperature of the edge of the rolling mill roll 4. Therefore, the driving stroke of the first driving mechanism 3 is set to 1 / 4-2 / 5 of the length of the rolling mill roll 4, and preferably 1 / 3, so that the rolling mill roll temperature compensation system of the rolling mill equipment in this embodiment can perform heating and compensation treatment on various positions on the edge of the rolling mill roll 4 with a length of 1 / 3 of the overall length of the rolling mill roll 4; in addition, as Figure 1 As shown, the rolling mill rolls of the rolling equipment have two sets of heating systems, which are used to heat the edges at both ends of the rolling mill roll 4 to ensure that the overall temperature of the rolling mill roll 4 meets the expectations.

[0065] More specifically, during metal rolling, the electromagnetic heating head 2 located on the outside of the rolling roll 4 can slide along a direction parallel to the axis of the rolling roll 4 under the driving action of the first driving mechanism 3. This allows the electromagnetic heating head 2 to change its relative position outside the edge of the rolling roll 4. In conjunction with the rotation characteristics of the rolling roll 4, it can be displaced to any position on the edge of the rolling roll 4, so that different positions on the edge of the rolling roll 4 can be heated and replenished.

[0066] More specifically, in the embodiments of this application, the electromagnetic heating head 2 is disposed on the outside of the rolling roll 4 and has a certain gap with the surface of the rolling roll 4. It can generate an electromagnetic field by energizing to perform local, non-contact induction heating on the rolling roll 4.

[0067] More specifically, rolling equipment generally uses a lower rolling roll for heated rolling. In this embodiment of the application, the heating system of the rolling roll 4 of the rolling equipment is preferably a heating and heating treatment of the lower rolling roll.

[0068] It should be noted that during the movement of the electromagnetic heating head 2 or when the temperature of the rolling roll 4 is uniform, the electromagnetic heating head 2 should be turned off to avoid heating the parts of the rolling roll 4 that do not require heating and thus affecting the temperature uniformity of the rolling roll 4.

[0069] More specifically, the first drive mechanism 3 is mounted on the frame 1.

[0070] The temperature compensation system of the rolling mill rolls in this embodiment can determine the low-temperature positions that need to be heated and compensated based on the surface temperature information measured by the temperature measuring component 5. During the rotation of the rolling mill roll 4, the first drive mechanism 3 drives the electromagnetic heating head 2 to move to the outside of the low-temperature position to heat and compensate for these low-temperature positions. This effectively improves the temperature uniformity of the rolling mill roll 4 and avoids the processing stress concentration caused by uneven temperature of the rolling mill roll 4, which affects the rolling quality of the metal workpiece.

[0071] In addition, the rolling roll 4 with uniform surface temperature can ensure that the deformation caused by thermal expansion is consistent throughout its surface, thereby ensuring uniform thickness of the rolled metal and achieving a rolling precision at the μm level.

[0072] In some preferred embodiments, there are multiple electromagnetic heating heads 2, preferably two, arranged circumferentially along the rolling roll 4 to increase the heating time and heating area at the same location. For the same low-temperature location, multiple electromagnetic heating heads 2 can sequentially heat the low-temperature location during the rotation of the rolling roll 4, thereby extending the heating time of the low-temperature location within the time it takes for the rolling roll 4 to rotate once, thus improving the heating and temperature compensation efficiency.

[0073] More specifically, in the embodiments of this application, the first drive mechanism 3 is preferably an electric linear drive module.

[0074] In some preferred embodiments, the electromagnetic heating head 2 includes a U-shaped magnetic core 21.

[0075] Specifically, the U-shaped magnetic core 21 can increase the concentration of magnetic field lines and reduce magnetic leakage, thereby enhancing the concentration of electromagnetic waves generated by the electromagnetic heating head 2 on the rolling roll 4, thus improving the accuracy of the heating position, and effectively improving energy conversion efficiency and reducing the size of the electromagnetic heating head 2.

[0076] In some preferred embodiments, such as Figure 3 and Figure 4 As shown, the electromagnetic heating head 2 also includes an induction coil 22 based on a figure-eight shape that is wrapped around both ends of the U-shaped magnetic core 21.

[0077] Specifically, if the induction coil 22 is arranged in a conventional spiral winding manner, the surface of the rolling roll 4 is easily magnetized by the magnetic field polarity. The magnetized rolling roll 4 easily attracts impurities such as metal shavings, which are then immersed into the rolled metal during the rolling process, leading to defects such as inclusions in the rolled metal. Secondly, the rolling workshop is generally filled with kerosene gas, and the friction and sparking of the metal shavings attracted by the rolling roll 4 may ignite the kerosene gas, causing a fire. However, in this embodiment, the U-shaped magnetic core 21, in conjunction with the figure-eight-wound induction coil 22, enables the two ends of the U-shaped magnetic core 21 to generate opposite magnetic fields on the surface of the rolling roll 4 simultaneously. While heating and compensating for the temperature of the rolling roll 4, the magnetic field polarity on the surface of the rolling roll 4 is canceled, thereby eliminating the polarization phenomenon of the rolling roll 4. This effectively avoids defects such as inclusions in the rolled metal and prevents safety accidents such as fires, thus effectively improving the safety of the metal rolling process.

[0078] In some preferred embodiments, the electromagnetic heating head 2 also includes a potting compound 23 that completely encapsulates the U-shaped magnetic core 21 and the induction coil 22.

[0079] Specifically, the potting compound 23 can effectively protect the U-shaped magnetic core 21 and induction coil 22 inside the electromagnetic heating head 2, which are the main components of the magnetic field generator, and can effectively improve the service life of the electromagnetic heating head 2. The potting compound 23 is preferably made of a material with insulation, heat insulation, impact resistance, water resistance, oil resistance and corrosion resistance. The potting compound 23 makes the electromagnetic heating head 2 have excellent tolerance to harsh environments and meets the requirements of metal rolling process.

[0080] In some preferred embodiments, the potting compound 23 is provided with a cooling mechanism 24.

[0081] Specifically, the cooling mechanism 24 is used to cool the electromagnetic heating head 2, so as to prevent the induction coil 22 from overheating due to excessive energizing time, which would affect the energizing efficiency and thus the electromagnetic field strength, thereby affecting the heating and temperature compensation effect.

[0082] More specifically, the cooling mechanism 24 can be a copper block heat conduction and cooling mechanism or a liquid cooling circulation heat dissipation mechanism. In the embodiments of this application, it is preferably a liquid cooling circulation heat dissipation mechanism that includes a liquid cooling pipe disposed in the potting compound 23 of the electromagnetic heating head 2. The electromagnetic heating head 2 is cooled by circulating coolant, and the size of the high-power (e.g., 10 kW or more) electromagnetic heating head 2 can be miniaturized.

[0083] In some preferred embodiments, the cooling mechanism 24 includes a heat-conducting radiator connected to the magnetic core and the induction coil 22 and a liquid cooling pipe wound around the induction coil 22.

[0084] Specifically, the heat sink is preferably a copper heat sink, which is used to conduct heat out of the magnetic core and induction coil 22 through heat transfer; the liquid cooling pipe wrapped around the outside of the induction coil 22 can quickly carry away the heat generated by the induction coil 22 away from the electromagnetic heating head 2, further enhancing the heat dissipation efficiency of the electromagnetic heating head 2, so that the electromagnetic heating head 2 can be designed and used with both high power and small size.

[0085] In some preferred embodiments, the center of the heating surface of the electromagnetic heating head 2 is perpendicular to the radial line of the rolling roll 4.

[0086] Specifically, the heating surface is the direction of electromagnetic field diffusion. In this embodiment, it is the plane where the two ends of the U-shaped magnetic core 21 are located, that is, the midpoint of the line connecting the two ends of the U-shaped magnetic core 21 is the center of the heating surface. The orientation of the electromagnetic heating head 2 ensures that the electromagnetic heating head 2 can accurately and centrally heat, avoiding unnecessary temperature rise in the rolling roll 4 where heating is not required due to position deviation.

[0087] Secondly, please refer to Figure 6 Some embodiments of this application also provide a method for heating the rolling rolls of a rolling mill, applied in the heating system of the rolling rolls of a rolling mill. The heating system of the rolling rolls of the rolling mill includes:

[0088] The electromagnetic heating head 2 is located on the outside of the rolling roll 4;

[0089] The first driving mechanism 3 is used to drive the electromagnetic heating head 2 to move in a direction parallel to the axis of the rolling roll 4;

[0090] Temperature measuring component 5 is used to measure the surface temperature information of rolling roll 4;

[0091] The method for replenishing the temperature of the rolling rolls in rolling mills includes the following steps:

[0092] S1. Obtain the low-temperature position of the rolling roll 4 based on the surface temperature information;

[0093] S2. Control the first drive mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low temperature position and heat the low temperature position to compensate for the temperature.

[0094] The temperature compensation method for the rolling rolls of the rolling equipment in this application embodiment can determine the low-temperature positions that need to be heated and compensated based on the surface temperature information measured by the temperature measuring component 5. During the rotation of the rolling roll 4, the first driving mechanism 3 is controlled to drive the electromagnetic heating head 2 to move to the outside of the low-temperature position to heat and compensate for these low-temperature positions. This effectively improves the temperature uniformity of the rolling roll 4 and avoids the processing stress concentration caused by uneven temperature of the rolling roll 4, which affects the rolling quality of the metal workpiece.

[0095] In some preferred embodiments, the step of obtaining the low-temperature position of the rolling roll 4 based on surface temperature information includes:

[0096] S11. Generate a temperature distribution map based on the surface temperature information;

[0097] S12. Analyze the temperature distribution map to obtain the location of low temperature.

[0098] Specifically, the temperature distribution map is a two-dimensional temperature image established based on the surface temperature information containing temperature data at different locations measured by the temperature measuring component 5. It is equivalent to unfolding the outer surface of the rolling roll 4 into a planar image and assigning temperature data to each location to form a planar temperature map, so that different locations on the temperature distribution map have corresponding mapping positions on the outer surface of the rolling roll 4.

[0099] More specifically, as the rolling roll 4 continues to rotate, the temperature measuring component 5 continuously acquires surface temperature information, enabling step S11 to continuously update the temperature distribution map, and step S12 to continuously analyze and acquire new low-temperature locations, so that step S2 can promptly control the electromagnetic heating head 2 to heat and replenish the low-temperature locations.

[0100] More specifically, during the continuous updating of the temperature distribution map, the boundary of the temperature distribution map can be established based on the position of the rolling roll 4 surface, meaning the mapping relationship between each position point in the temperature distribution map and the position on the rolling roll 4 remains unchanged. Alternatively, the boundary of the temperature distribution map can be established based on the detection position of the temperature measuring component 5, meaning the mapping relationship between each position point in the temperature distribution map and the position on the rolling roll 4 is continuously changing, but the position of each position point in the temperature distribution map on the rolling roll 4 and the position of the temperature measuring component 5 remain relatively unchanged, and the position of the electromagnetic heating head 2 remains relatively unchanged when the electromagnetic heating head 2 is not displaced. In this embodiment, the boundary of the temperature distribution map is preferably established based on the latter, so that the temperature distribution map can intuitively reflect the current low temperature position and the positional relationship of the electromagnetic heating head 2. In this embodiment, the temperature distribution map is equivalent to a continuously updated scroll diagram of the temperature distribution, such as... Figure 7 and Figure 8 As shown, the temperature distribution map is a fixed-size, directionally updated planar scroll map. Point a is the current position of the electromagnetic heating head 2 relative to the surface of the rolling roll 4, which is the relative position of the electromagnetic heating head 2 in the temperature distribution map. Under the drive of the first driving mechanism 3, the electromagnetic heating head 2 can be displaced in the horizontal direction in this map. Therefore, the temperature distribution map can intuitively reflect the positional relationship between the current low temperature position and the electromagnetic heating head 2.

[0101] More specifically, the electromagnetic heating head 2 and the temperature measuring component 5 can be located on the same side of the rolling roll 4. In this case, the temperature distribution map preferably reflects the temperature distribution of the entire outer circumference of the edge of the rolling roll 4, which is equivalent to detecting the temperature distribution data of one circle for low-temperature position analysis. Alternatively, the electromagnetic heating head 2 and the temperature measuring component 5 can be located on opposite sides of the rolling roll 4. In this case, the temperature distribution map preferably reflects the temperature distribution of half of the outer circumference of the edge of the rolling roll 4, which is equivalent to detecting the temperature distribution data of half a circle for low-temperature position analysis. The above settings can be selected according to the usage requirements. Therefore, the temperature distribution map can reflect the surface temperature distribution of the rolling roll 4 that is about to move to the side of the electromagnetic heating head 2, so that step S2 can control the first drive mechanism 3 to move the electromagnetic heating head 2 to a suitable position in a timely or advance manner to heat and compensate for the low-temperature position.

[0102] More specifically, the temperature measuring component 5 may include multiple temperature probes arranged at equal intervals to obtain temperature data at multiple locations on the surface of the rolling roll 4 to form surface temperature information to update the temperature distribution map. Alternatively, it may use a regional temperature measuring device such as an infrared imager to capture local temperature images required for updating the temperature distribution map as surface temperature information, so as to intermittently acquire multiple local temperature images to reconstruct and update the temperature distribution map.

[0103] In some preferred embodiments, the step of heating and compensating for the low-temperature location includes:

[0104] S24. Adjust the heating power of the electromagnetic heating head 2 according to the temperature information at the low temperature position to heat and compensate for the low temperature position.

[0105] Specifically, the temperature information at the low-temperature location can be extracted from the temperature distribution map or from the surface temperature information, which is the average temperature value and the minimum temperature value at that low-temperature location.

[0106] More specifically, the electromagnetic heating head 2 heats and replenishes the surface of the rolling roll 4 during its rotation. Therefore, the heating time for a specific area is fixed. If a fixed heating power is used to heat different low-temperature positions, the heat replenishment effect may be unsatisfactory (e.g., multiple heatings are required or the temperature is too high after heating). Therefore, the heat replenishment method of the rolling roll of the rolling equipment in this embodiment of the application adjusts the heating power of the electromagnetic heating head 2 according to the temperature information at the low-temperature position, thereby changing the heating efficiency of the electromagnetic heating head 2. This allows the electromagnetic heating head 2 to generate different degrees of temperature rise on the surface of the rolling roll 4 within a limited heating time, so as to achieve heat replenishment based on the actual temperature of the low-temperature position. This effectively improves the heating and heat replenishment rate and the accuracy of temperature regulation, so that the low-temperature position on the surface of the rolling roll 4 can quickly and accurately return to the temperature required by the metal rolling process, thereby improving the uniformity of the surface temperature of the rolling roll 4.

[0107] More specifically, the process of adjusting the heating power of the electromagnetic heating head 2 based on the temperature information at the low-temperature location can be either to calculate the heating power based on the temperature information using a preset linear function, or to select the appropriate heating power based on the temperature range and a preset grouping relationship.

[0108] In some preferred embodiments, the step of controlling the first drive mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low-temperature position includes:

[0109] S21. Determine the location of the low temperature to be compensated for based on the temperature distribution map and the low temperature location;

[0110] S22. Generate a movement path based on the low temperature location to be compensated for and the relative position of the electromagnetic heating head 2 in the temperature distribution map;

[0111] S23. Based on the moving path and the rotation speed of the rolling roll 4, control the first drive mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low temperature position to be compensated for.

[0112] Specifically, there may be one or more low-temperature locations at the same time in the temperature distribution map. When there is only one low-temperature location in the temperature distribution map, the rolling mill roll temperature compensation method of the rolling equipment in this embodiment can directly control the first drive mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low-temperature location to be compensated for heating. However, when there are multiple low-temperature locations in the temperature distribution map, it is necessary to reasonably plan the movement route of the electromagnetic heating head 2 to determine the order of heating and compensation of the low-temperature locations. Therefore, the rolling mill roll temperature compensation method of the rolling equipment in this embodiment needs to first use step S21 to refer to the position of each low-temperature location in the temperature distribution map to determine the low-temperature location that needs to be compensated for in the next stage (i.e., the low-temperature location to be compensated for), and then use step S22 to combine the low-temperature location to be compensated for with the relative position of the electromagnetic heating head 2 in the temperature distribution map (e.g., the low-temperature location to be compensated for). Figure 7 At point a in the diagram, a corresponding moving path is generated. This moving path is essentially a virtual route established based on the rotational speed of the rolling roll 4 and the driving capability of the first driving mechanism 3 (i.e., the moving speed of the electromagnetic heating head 2 under the drive of the first driving mechanism 3). Since the rolling roll 4 generally rotates at a uniform speed for metal rolling (different rotational speeds may be used for different metals), step S23 can calculate the driving capability of the first driving mechanism 3 based on the moving path and the current rotational speed of the rolling roll 4 to move the electromagnetic heating head 2 to the outside of the low-temperature position to be heated within a suitable time to heat and replenish the low-temperature position. When there are multiple low-temperature positions in the temperature distribution diagram, step S22 can be to plan the moving path to the next low-temperature position after the electromagnetic heating head 2 has moved to the low-temperature position, or it can be to directly plan the moving path connecting multiple low-temperature positions (e.g., ...). Figure 8 (path d in the text).

[0113] More specifically, this implementation determines the movement path based on the distribution of low-temperature locations on the temperature distribution map and then controls the electromagnetic heating head 2 to move to the correct position. This ensures that the heating and temperature replenishment process is carried out in an orderly and timely manner. Furthermore, by comprehensively analyzing and planning all low-temperature locations on the temperature distribution map, it ensures that the movement path can effectively cover the low-temperature locations that require temperature replenishment.

[0114] More specifically, the electromagnetic heating head 2, driven by the first driving mechanism 3, can move at a fixed constant speed or at an adjustable constant speed; for example... Figure 8As shown, since the rolling roll 4 performs rolling based on uniform rotation, the slope of the moving path of the electromagnetic heating head 2 generated by the former movement mode in the temperature distribution diagram is fixed (the vertical line represents the state where the electromagnetic heating head 2 does not move), while the slope of the moving path of the electromagnetic heating head 2 generated by the latter movement mode in the temperature distribution diagram is determined according to the distribution position of the low temperature position; in the embodiment of this application, the moving speed of the electromagnetic heating head 2 driven by the first driving mechanism 3 is preferably a fixed uniform speed movement to simplify the control logic of the first driving mechanism 3.

[0115] It should be noted that when there is no low-temperature position in the temperature distribution map, the rolling mill roll temperature compensation method controls the electromagnetic heating head 2 to remain stationary, and when a new low-temperature position appears, steps S21-S22 are executed to generate a moving path.

[0116] More specifically, this implementation can convert the temperature compensation control process into a graphical path analysis process, so that the heating and temperature compensation treatment of the rolling roll 4 can be carried out in a well-defined manner.

[0117] More specifically, the temperature compensation logic analysis is transformed into a graphical path analysis, which enables the temperature compensation to proceed in an orderly manner. This ensures that the electromagnetic heating head 2 can move smoothly, accurately, and promptly to the location where heating compensation is required, effectively improving the heating compensation rate and the accuracy of the heating position. This allows the low-temperature position on the surface of the rolling roll 4 to quickly and accurately return to the temperature required by the metal rolling process.

[0118] In some preferred embodiments, the step of determining the low-temperature location to be compensated for based on the temperature distribution map and the low-temperature location includes:

[0119] S211. Determine the search range based on the temperature distribution map and the relative position of the electromagnetic heating head 2 on the temperature distribution map;

[0120] S212. Search for low-temperature locations within the search range and obtain the low-temperature location closest to the electromagnetic heating head 2 in the temperature distribution map as the low-temperature location to be compensated for.

[0121] Specifically, because the rolling roll 4 performs rolling based on uniform rotation, limited by the driving capability of the first driving mechanism 3, the electromagnetic heating head 2 cannot reach some low-temperature positions (such as...) within the time it takes for the rolling roll 4 to complete one revolution during the subsequent movement. Figure 8(at point b in the text), therefore, before generating the moving path, the method for replenishing the temperature of the rolling rolls in the rolling equipment of this application embodiment needs to remove excess low-temperature positions; wherein, the search range corresponds to the movable range of the electromagnetic heating head 2 in the temperature distribution map, that is, the moving range determined based on the driving capability of the first driving mechanism 3. As can be seen from the foregoing, the driving capability of the first driving mechanism 3 determines the slope of the moving path, so the shape of the search range can be set based on the maximum driving capability of the first driving mechanism 3, preferably an isosceles triangular region with the relative position of the electromagnetic heating head 2 as the vertex in the temperature distribution map (e.g., Figure 8 The isosceles triangle region (c region) is determined based on the driving capability of the first driving mechanism 3 and the rotation speed of the rolling roll 4. This makes step S211 equivalent to shielding the low-temperature position outside the triangle region, so that heating and temperature replenishment can be performed when the rolling roll 4 rotates for the next time. This implementation removes the low-temperature position that the electromagnetic heating head 2 cannot reach at present based on the search range, effectively reducing data analysis errors and ensuring that the generated movement path can smoothly guide the electromagnetic heating head 2 to move to the low-temperature position for heating and temperature replenishment.

[0122] More specifically, in the embodiments of this application, step S22 is preferably planned to move to the next low temperature position when the electromagnetic heating head 2 moves to the low temperature position. Therefore, step S21 is also preferably determined to be the low temperature position to be heated when the electromagnetic heating head 2 moves to the low temperature position. Thus, step S211 is equivalent to determining the search range with the low temperature position where the electromagnetic heating head 2 is located as the vertex.

[0123] In some preferred embodiments, the step of searching for low-temperature locations within a search range and obtaining the low-temperature location closest to the relative position of the electromagnetic heating head 2 on the temperature distribution map as the low-temperature location to be compensated for includes:

[0124] S2121. Search for low-temperature positions within the search range and obtain the low-temperature position with the closest longitudinal distance to the electromagnetic heating head 2 in the temperature distribution map. If there are multiple low-temperature positions with the closest longitudinal distance, take the low-temperature position with the lowest temperature among these multiple low-temperature positions as the low-temperature position to be compensated for.

[0125] Specifically, the longitudinal distance in the temperature distribution diagram corresponds to the circumferential length of the rolling roll 4. That is, the smaller the longitudinal distance between the low-temperature position and the electromagnetic heating head 2 in the temperature distribution diagram, the shorter the time it takes for the low-temperature position to move to the electromagnetic heating head 2 when the rolling roll 4 rotates. By selecting the low-temperature position to be heated based on the shortest longitudinal distance, the number of low-temperature positions that the electromagnetic heating head 2 can heat and heat under the same rotation stroke of the rolling roll 4 can be increased. This means that the electromagnetic heating head 2 can move to more low-temperature positions during one rotation of the rolling roll 4, thereby effectively improving the heating and heat replenishment efficiency.

[0126] More specifically, the lowest temperature positions with the closest longitudinal distance are multiple positions that have the same time requirement for the electromagnetic heating head 2 to reach the outside of these low-temperature positions. The lower the temperature of the low-temperature position, the more significant the deterioration effect on the metal rolling process. In this case, the temperature compensation method of the rolling roll of the rolling equipment in this application embodiment determines the lowest temperature position among these low-temperature positions as the low-temperature position to be compensated for, so as to heat and compensate the low-temperature position with the most serious temperature deviation first, so as to avoid the low-temperature position with the largest temperature difference from the temperature required by the metal rolling process from endangering the processing quality of the metal product. The remaining low-temperature positions are left to be processed when the rolling roll 4 rotates to the next revolution.

[0127] In some preferred embodiments, in step S2121, when there are multiple low-temperature positions with the closest longitudinal distance, and there are multiple low-temperature positions with the lowest temperature among these multiple low-temperature positions, the low-temperature position closest to the center of the rolling roll 4 among the multiple low-temperature positions with the lowest temperature is selected as the low-temperature position to be heated.

[0128] Specifically, since the edge portions of metal products that crack due to low temperatures need to be removed and discarded, the method of warming the rolling rolls of the rolling equipment in this application embodiment selects the low temperature position closest to the inner side of the rolling roll 4 as the preferred object for heating and warming when there are multiple low temperature positions among multiple low temperature positions. This can prevent cracks from appearing on the edge of the metal product near the center, thereby reducing the amount of metal products that need to be removed and discarded.

[0129] In some other embodiments, the step of determining the low-temperature location to be compensated for based on the temperature distribution map and the low-temperature location includes:

[0130] S211' Determine the low-temperature location to be compensated for based on the temperature distribution map and the slope of the line connecting the relative position of the electromagnetic heating head 2 on the temperature distribution map to different low-temperature locations.

[0131] Specifically, this implementation can directly determine whether the electromagnetic heating head 2 can reach these low-temperature positions within the time it takes for the rolling roll 4 to rotate once during the subsequent movement by the magnitude of the slope of the connecting lines. That is, based on whether the slope of these connecting lines is within the preset slope range, the low-temperature positions that the electromagnetic heating head 2 cannot currently reach are removed, and the low-temperature positions to be heated are determined among the remaining low-temperature positions.

[0132] In some preferred embodiments, the temperature distribution map is a grid map based on temperature division.

[0133] Specifically, the temperature distribution map can be a grid map with regular unit shapes, such as a rectangular grid map or a hexagonal grid map. In the embodiments of this application, a rectangular grid map is preferred.

[0134] More specifically, in this embodiment, each grid in the temperature distribution map represents a temperature processing unit, that is, the low-temperature position occupies one grid, and the electromagnetic heating head 2 moves in units of grids under the driving action of the first driving mechanism 3 (moving to the vertical center line of the grid); wherein, the temperature information of the low-temperature position can be the average temperature in the corresponding grid, or it can be the lowest temperature in the grid area, preferably the average temperature in the grid area.

[0135] More specifically, in some embodiments, the temperature measuring component 5 includes multiple temperature probes arranged at equal intervals. The data measured by each temperature measuring component 5 corresponds to the generation of a grid. The temperature information of each grid area is the average of multiple temperature values ​​or linear temperatures measured by the temperature measuring component 5 within the grid. The electromagnetic heating head 2 starts heating and temperature compensation when it reaches the top of the grid where the low temperature position is located in the temperature distribution map, and ends heating and temperature compensation when it reaches the bottom of the grid where the low temperature position is located or when the temperature of the grid reaches the expected value.

[0136] More specifically, the grid size of the temperature distribution map is set based on the heating surface of the electromagnetic heating head 2. Its width is the same as the width of the heating surface of the electromagnetic heating head 2, and its vertical length is a positive integer multiple of the vertical length of the heating surface of the electromagnetic heating head 2, so as to ensure that the electromagnetic heating head 2 can accurately heat and compensate for the low temperature position of the grid size.

[0137] In some other embodiments, the temperature measuring component 5 employs a regional temperature measuring device such as an infrared imager to intermittently acquire multiple local temperature images to reconstruct and update the temperature distribution map. The acquired local temperature images need to be converted into local raster images before being combined to update the temperature distribution map. That is, step S11 includes:

[0138] S111, Remove qualified temperature regions from the local temperature map that serves as surface temperature information to generate a cold temperature map based on grayscale characterization of cold temperature (e.g., Figure 9 );

[0139] S112. Rasterize the cold temperature map based on a preset raster format, so that each raster cell is filled with grayscale values ​​representing the corresponding temperature (e.g., ...). Figure 10 );

[0140] S113. Obtain temperature distribution map based on cold temperature map of rasterization processing.

[0141] Specifically, this embodiment can collect temperature data of the surface of the rolling roll 4 based on an infrared imager, and reconstruct a temperature distribution map that can accurately reflect the distribution of low temperature locations by characterizing the low temperature part with cold temperature data; this embodiment can visually reflect the distribution of low temperature locations and the degree of temperature deviation based on grayscale.

[0142] Step S11 may also include steps performed between step S111 and step S112:

[0143] Remove cold and warm blocks in the cold and warm map whose area is smaller than the preset area.

[0144] More specifically, cold and warm blocks smaller than the preset area size generally do not affect the rolling quality and may be deviations caused by measurement errors. Removing these cold and warm blocks can effectively improve the accuracy of the temperature distribution map.

[0145] Thirdly, please refer to Figure 11 Some embodiments of this application also provide a schematic diagram of the structure of an electronic device. This application provides an electronic device including: a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanism (not shown). The memory 302 stores computer-readable instructions that can be executed by the processor 301. When the electronic device is running, the processor 301 executes the computer-readable instructions to execute the method in any optional implementation of the above embodiments.

[0146] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program thereon. When executed by a processor, the computer program performs the method in any optional implementation of the above embodiments. The computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Programmable Red-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0147] In summary, the embodiments of this application provide a temperature compensation system, method, and related equipment for the rolling rolls of a rolling mill. The temperature compensation system for the rolling rolls of the rolling mill can determine the low-temperature locations that need to be heated and compensated based on the surface temperature information measured by the temperature measuring component 5. During the rotation of the rolling roll 4, the system controls the first driving mechanism 3 to drive the electromagnetic heating head 2 to move to the outside of the low-temperature locations to heat and compensate for these low-temperature locations. This effectively improves the temperature uniformity of the rolling roll 4 and avoids the stress concentration caused by uneven temperature of the rolling roll 4, which would affect the rolling quality of the metal workpiece.

[0148] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some communication interfaces; indirect couplings or communication connections between devices or units may be electrical, mechanical, or other forms.

[0149] Furthermore, the units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0150] Furthermore, the functional modules in the various embodiments of this application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0151] In this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0152] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A temperature compensating system of a rolling mill of a rolling mill for compensating heating of a rolling mill, characterized by, The temperature compensation system comprises: An electromagnetic heating head arranged outside the rolling roller; A first driving mechanism for driving the electromagnetic heating head to displace along a direction parallel to the axis of the rolling roller; A temperature measurement assembly for measuring surface temperature information of the rolling roller; A controller for obtaining a low temperature position of the rolling roller according to the surface temperature information; The controller is further configured to control the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position and to perform heating compensation on the low temperature position; The step of obtaining the low temperature position of the rolling roller according to the surface temperature information comprises: generating a temperature distribution map according to the surface temperature information; analyzing the temperature distribution map to obtain the low temperature position; The step of controlling the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position comprises: determining a low temperature position to be compensated according to the temperature distribution map and the low temperature position; generating a moving path according to the low temperature position to be compensated and the relative position of the electromagnetic heating head in the temperature distribution map; controlling the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position to be compensated according to the moving path and the rotating speed of the rolling roller.

2. A method of temperature compensation of a rolling roll of a rolling apparatus, characterized in that, The temperature compensation system for the rolling roller of a rolling device comprises: An electromagnetic heating head arranged outside the rolling roller; A first driving mechanism for driving the electromagnetic heating head to displace along a direction parallel to the axis of the rolling roller; A temperature measurement assembly for measuring surface temperature information of the rolling roller; The temperature compensation method for the rolling roller of the rolling device comprises the following steps: obtaining a low temperature position of the rolling roller according to the surface temperature information; controlling the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position and to perform heating compensation on the low temperature position; The step of obtaining the low temperature position of the rolling roller according to the surface temperature information comprises: generating a temperature distribution map according to the surface temperature information; analyzing the temperature distribution map to obtain the low temperature position; The step of controlling the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position comprises: determining a low temperature position to be compensated according to the temperature distribution map and the low temperature position; generating a moving path according to the low temperature position to be compensated and the relative position of the electromagnetic heating head in the temperature distribution map; controlling the first driving mechanism to drive the electromagnetic heating head to move outside the low temperature position to be compensated according to the moving path and the rotating speed of the rolling roller.

3. The temperature compensation method of the rolling mill according to claim 2, characterized in that, The step of performing heating compensation on the low temperature position comprises: adjusting the heating power of the electromagnetic heating head according to the temperature information at the low temperature position to perform heating compensation on the low temperature position.

4. The temperature compensating method of the rolling mill of claim 2, characterized in that, The step of determining the low temperature position to be compensated according to the temperature distribution map and the low temperature position comprises: determining a search range according to the temperature distribution map and the relative position of the electromagnetic heating head in the temperature distribution map; searching for the low temperature position in the search range to obtain a low temperature position closest to the relative position of the electromagnetic heating head in the temperature distribution map as the low temperature position to be compensated.

5. The temperature compensating method of the rolling mill of claim 4, characterized in that, The step of searching for the low-temperature location within the search range and obtaining the low-temperature location closest to the relative position of the electromagnetic heating head on the temperature distribution map as the low-temperature location to be compensated for includes: The search range is used to search for the low-temperature position and obtain the low-temperature position that is closest to the electromagnetic heating head in the temperature distribution map in terms of longitudinal distance. If there are multiple low-temperature positions that are closest in longitudinal distance, the low-temperature position with the lowest temperature among the multiple low-temperature positions is taken as the low-temperature position to be heated.

6. The temperature compensation method of the rolling mill according to any one of claims 2 to 5, characterized in that, The temperature distribution map is a grid map based on temperature division.

7. An electronic device, comprising: It includes a processor and a memory, the memory storing computer-readable instructions that, when executed by the processor, perform the steps of the method as described in any one of claims 2-5.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, When the computer program is executed by a processor, it performs the steps of the method as described in any one of claims 2-5.

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