Strip steel welding control method and device based on induction heating equipment

Abstract

The application provides a strip steel welding control method and device based on an induction heating device, and belongs to the technical field of welding control. The method comprises the following steps: dividing a target strip steel welding area into multiple heating areas based on target strip steel specification data, and determining first welding control parameters of each heating area; welding the target strip steel welding area based on the first welding control parameters of each heating area; obtaining the temperature of the target strip steel welding area and the current of an induction heating coil during welding; calculating the temperature difference between the temperature of the target strip steel welding area and a target temperature, and calculating the current difference between the current of the induction heating coil and a target current; if the temperature difference exceeds a temperature deviation range and / or the current difference exceeds a current deviation range, adjusting the first welding control parameters of the target strip steel welding area to obtain second welding control parameters; and welding the target strip steel welding area based on the second welding control parameters. The application can improve the welding quality stability of the strip steel.

Description

Technical Field

[0001] This application belongs to the field of welding control technology, and more specifically, relates to a method and apparatus for controlling strip welding based on induction heating equipment. Background Technology

[0002] Strip steel welding is a critical process in industries such as steel metallurgy and automobile manufacturing. Its quality directly affects the stability of subsequent rolling, forming, and other processes, as well as the performance of the final product. Induction heating equipment generates an alternating magnetic field through induction coils, forming eddy currents within the strip steel and converting them into heat energy, bringing the welding area to the fusion temperature and achieving strip steel welding.

[0003] Existing strip welding control methods typically employ induction heating equipment with an integrated induction heating coil to uniformly heat the welding area. The welding control parameters are preset and fixed throughout the process. These fixed parameters prevent the welding process from adapting to the differences in heat requirements of strips of different specifications and from dealing with dynamic interference during the welding process, resulting in fluctuations in welding quality. Summary of the Invention

[0004] The purpose of this application is to provide a method and apparatus for controlling strip welding based on induction heating equipment, so as to improve the stability of strip welding quality.

[0005] A first aspect of this application provides a strip welding control method based on an induction heating device, comprising:

[0006] Based on the target strip steel specification data, the target strip steel welding area is divided into multiple heating zones, and the first welding control parameters for each heating zone are determined; the target strip steel welding area is then welded based on the first welding control parameters for each heating zone.

[0007] The multiple heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the first side edge supplementary heating zone are the same as those of the induction heating coil corresponding to the second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the main heating zone are different from those of the induction heating coil corresponding to the first side edge supplementary heating zone.

[0008] Obtain the temperature of the target strip welding area and the current of the induction heating coil during the welding process; calculate the temperature difference between the target strip welding area temperature and the target temperature, and calculate the current difference between the induction heating coil current and the target current;

[0009] If the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted to obtain the second welding control parameter; the target strip welding area is then welded based on the second welding control parameter.

[0010] A second aspect of this application provides a strip welding control device based on an induction heating device, comprising:

[0011] The zone heating module is used to divide the target strip steel welding area into multiple heating zones based on the target strip steel specification data, and determine the first welding control parameters for each heating zone; and to perform welding on the target strip steel welding area based on the first welding control parameters for each heating zone.

[0012] The multiple heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the first side edge supplementary heating zone are the same as those of the induction heating coil corresponding to the second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the main heating zone are different from those of the induction heating coil corresponding to the first side edge supplementary heating zone.

[0013] The data analysis module is used to obtain the temperature of the target strip welding area and the current of the induction heating coil during the welding process; calculate the temperature difference between the target strip welding area temperature and the target temperature; and calculate the current difference between the induction heating coil current and the target current.

[0014] The welding control module is used to adjust the first welding control parameters of the target strip welding area to obtain the second welding control parameters if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range; and to perform welding on the target strip welding area based on the second welding control parameters.

[0015] A third aspect of this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor executes the computer program to implement the steps of the above-described strip welding control method based on an induction heating device.

[0016] In a fourth aspect of this application, a computer-readable storage medium is provided, which stores a computer program that, when executed by a processor, implements the steps of the above-described strip welding control method based on an induction heating device.

[0017] The beneficial effects of the strip welding control method and apparatus based on induction heating equipment provided in this application are as follows:

[0018] In this embodiment, the welding area is first divided into a main heating zone and two side edge supplementary heating zones based on the target strip steel specification data. Different induction heating coils are designed for different zones, and the first welding control parameters for each zone are determined. This avoids the problem of incomplete melting at the edges or overheating in the middle caused by welding with a single overall welding parameter, and can adapt to the different heat requirements of strip steel of different specifications.

[0019] In this embodiment, the temperature of the welding area and the coil current are acquired in real time during welding. Once the temperature or current deviates from the target value, the first welding control parameter is adjusted in time to obtain the second welding control parameter, so as to dynamically correct the deviation caused by power grid fluctuations, heat dissipation changes and other interferences, and ensure that the welding process always conforms to the ideal state.

[0020] In summary, the embodiments of this application reduce welding defects and improve welding quality stability through zoned heating and dynamic parameter adjustment. They can also flexibly adapt to the welding needs of strip steel of different specifications, reduce the risk of quality fluctuations in strip steel welding, and better meet the actual needs of industrial production for strip steel welding. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic flowchart of a strip welding control method based on an induction heating device provided in an embodiment of this application;

[0023] Figure 2 A structural block diagram of a strip welding control device based on an induction heating equipment provided in an embodiment of this application;

[0024] Figure 3 This is a schematic block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0025] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0026] It is understood that in the embodiments of this application, data such as user information are involved. When the embodiments of this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of related data must comply with relevant laws, regulations and standards.

[0027] It should be noted that the terms "first," "second," etc., used in the specification, claims, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0028] Please refer to Figure 1 , Figure 1 This is a flowchart illustrating a strip welding control method based on an induction heating device according to an embodiment of this application. The method can be executed by an electronic device, and specifically, the method may include S101 to S103.

[0029] S101: Divide the target strip steel welding area into multiple heating zones based on the target strip steel specification data, and determine the first welding control parameters for each heating zone; weld the target strip steel welding area based on the first welding control parameters for each heating zone;

[0030] The multiple heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the first side edge supplementary heating zone are the same as those of the induction heating coil corresponding to the second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the main heating zone are different from those of the induction heating coil corresponding to the first side edge supplementary heating zone.

[0031] In this embodiment, the induction heating device is used to heat the strip steel through an induction heating coil to achieve strip steel welding. The induction heating coil parameters include coil diameter, number of coil turns, and coil spacing. Target strip steel specification data refers to data characterizing the properties of the target strip steel, such as strip steel thickness, strip steel material, and welding area width. First welding control parameters refer to the initial welding control parameters determined based on the target strip steel specification data, used for initial welding in each heating area, such as initial power, target temperature, and target current for each heating area. The main heating zone refers to the central area of ​​the strip steel welding area that undertakes the core penetration task, used to ensure sufficient fusion of the core parts of the strip steel welding. The first side edge heating zone / second side edge heating zone refers to the areas on both sides of the strip steel welding area that need heat dissipation compensation, used to compensate for insufficient heat input caused by rapid heat dissipation at the edges. The coil diameter refers to the cross-sectional diameter of the induction heating coil conductor, a component of the coil parameters, used to affect the coil magnetic field strength and current carrying capacity. The number of coil turns refers to the number of turns of the induction heating coil, a component of the coil parameters, used to adjust the magnetic field strength generated by the coil. Coil spacing refers to the distance between two adjacent turns of an induction heating coil. It is a component of the coil parameters and is used to control the magnetic field coverage and heat distribution.

[0032] The consideration behind this embodiment is that there are significant differences in heat dissipation in the strip welding area. The edge areas, due to their larger contact area with air, have a much higher heat dissipation rate than the central areas. If a uniform heating method is used, it can easily lead to incomplete melting at the edges or overheating in the center. Therefore, this embodiment divides the main heating zone and the two side edge supplementary heating zones according to the target strip specifications, allowing for targeted adaptation to the different heat requirements of each area. This embodiment designs differentiated coil parameters, ensuring that the main heating zone and the edge supplementary heating zones obtain suitable magnetic field strength and heat input efficiency. The identical coil parameters on both sides ensure symmetrical heating. This embodiment determines the first welding control parameters for each area, ensuring that the heat input of each area meets the specifications during the initial welding stage, ultimately improving the stability of welding quality.

[0033] For example, in this embodiment, the coil parameters of the induction heating device can be determined. For instance, the main heating zone coil adopts a specification of 10mm diameter, 12 turns, and 5mm spacing, while the coils of the first and second side edge supplementary heating zones both adopt a specification of 8mm diameter, 16 turns, and 3mm spacing.

[0034] In this embodiment, the specification data of the target strip steel can be obtained first. For example, the thickness of the strip steel is measured to be 2mm by a laser thickness gauge, it is determined to be low carbon steel by a material detector, and the width of the welding area is measured to be 50mm by a laser width gauge.

[0035] Next, this embodiment can divide the heating area based on these specifications. The central 35mm wide area of ​​the welding area is set as the main heating area, and the 7.5mm wide areas on both sides are set as the first side edge supplementary heating area and the second side edge supplementary heating area, respectively. Then, this embodiment can determine the first welding control parameters according to the strip steel specification data and the preset parameter library: the initial power of the main heating area is set to 10kW, the target temperature is 1500℃, and the target current is 50A; the initial power of the two side edge supplementary heating areas is set to 12kW, the target temperature is 1400℃, and the target current is 55A.

[0036] In this embodiment, the corresponding coil can be controlled to work according to the first welding control parameters of each heating zone to weld the target strip steel welding area. The main heating zone coil outputs energy according to the set parameters to ensure the central part is melted through, and the side edge supplementary heating zone coils output energy according to the set parameters to compensate for the edge heat dissipation.

[0037] S102: Obtain the temperature of the target strip welding area and the current of the induction heating coil during the welding process; calculate the temperature difference between the target strip welding area temperature and the target temperature, and calculate the current difference between the induction heating coil current and the target current.

[0038] In this embodiment, the welding process refers to the continuous stage from the start of induction heating of the strip steel to the completion of fusion. The target strip steel welding area temperature refers to the actual temperature of the strip steel welding area during the welding process, which needs to be collected in zones, such as the main heating zone temperature, the first side edge supplementary heating zone temperature, and the second side edge supplementary heating zone temperature. The induction heating coil current refers to the actual operating current of the induction heating coil during the welding process, which needs to be collected according to the corresponding area, such as the main heating zone coil current, the first side edge supplementary heating zone coil current, and the second side edge supplementary heating zone coil current. The target temperature refers to the ideal temperature of the welding area preset based on the target strip steel specification data, which needs to correspond to the heating area, such as the target temperature of the main heating zone and the target temperatures of the two side edge supplementary heating zones. The temperature difference refers to the difference between the actual temperature of the target strip steel welding area and the corresponding target temperature, used to determine whether the heat input meets the standard, such as the temperature difference of the main heating zone and the temperature difference of the two side edge supplementary heating zones. The target current refers to the ideal operating current of the induction heating coil preset based on the target strip steel specification data, which needs to correspond to the coil area, such as the target current of the main heating zone coil and the target current of the two side edge supplementary heating zone coils. Current difference refers to the difference between the actual current of the induction heating coil and the corresponding target current. It is used to determine whether the energy coupling is normal. For example, it may include the current difference of the main heating zone coil and the current difference of the coils in the side edge supplementary heating zones.

[0039] The consideration behind this embodiment is that the heat input state during welding is easily affected by external interference, and relying solely on initial parameters cannot guarantee stable welding quality. Temperature is a direct indicator of strip fusion, and current is a key manifestation of coil energy output; both need to be monitored together to comprehensively reflect the welding state. Therefore, this embodiment acquires the welding area temperature and coil current in real time to promptly capture heat input deviations. This embodiment calculates temperature and current differences to quantify the degree of deviation, providing a basis for subsequent parameter adjustments. If only a single parameter is monitored, misjudgments may occur, such as temperature meeting the standard but current being abnormal (e.g., poor coil coupling) or current meeting the standard but temperature being abnormal (e.g., sudden heat dissipation). Dual monitoring can improve the accuracy of state judgment and lay the foundation for stable welding quality.

[0040] For example, in this embodiment, a monitoring device can be deployed at the welding station of the induction heating equipment. For instance, an infrared thermal imager can be installed above the welding area to collect the temperature of the target strip welding area. Current sensors can be connected in series in the coil circuits of the main heating area, the first side edge supplementary heating area, and the second side edge supplementary heating area to collect the current of the corresponding induction heating coil.

[0041] Once the strip enters the welding stage, this embodiment can activate the infrared thermal imager and the current sensor. The infrared thermal imager collects the temperature of the welding area at a frequency of 10 times per second, and extracts the actual temperature data of the main heating area and the side edge supplementary heating areas respectively. The current sensor collects the coil current at a frequency of 10 times per second, and records the actual current data of the coil in each area respectively.

[0042] Subsequently, this embodiment can call the preset target temperature and target current data. The target temperature of the main heating zone is 1500℃ and the target current is 50A. The target temperature of the side edge supplementary heating zones is 1400℃ and the target current is 55A. The temperature difference and current difference of each zone are calculated respectively. For example, when the actual temperature of the main heating zone is 1490℃, the temperature difference is 10℃. When the actual current is 48A, the current difference is 2A.

[0043] S103: If the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted to obtain the second welding control parameter; the target strip welding area is welded based on the second welding control parameter.

[0044] In this embodiment, the temperature deviation range refers to a preset range of allowable temperature fluctuations based on the target strip steel specification data, used to determine whether the temperature needs adjustment. The current deviation range refers to a preset range of allowable current fluctuations based on the target strip steel specification data, used to determine whether the current needs adjustment. The second welding control parameter refers to the new welding control parameter obtained after adjusting the first welding control parameter, used to correct deviations, and may include, for example, the adjusted power of each heating zone.

[0045] The underlying consideration of this embodiment is that during the welding process, interference from power grid fluctuations and changes in heat dissipation can easily cause the initial welding control parameters to deviate from the ideal state, resulting in temperature or current exceeding reasonable ranges and affecting welding quality. Therefore, this embodiment, by setting temperature and current deviation ranges, clarifies the criteria for determining whether parameters need adjustment. When either deviation exceeds the range, adjusting the first welding control parameters to obtain second welding control parameters can promptly correct the deviation and avoid defects such as incomplete fusion and overheating caused by parameter inaccuracies. Simultaneously, continuing welding based on the adjusted second welding control parameters ensures that subsequent welding processes remain under ideal conditions, guaranteeing stable welding quality.

[0046] For example, in this embodiment, a preset temperature deviation range and current deviation range can be called first, such as a temperature deviation range of ±5℃ and a current deviation range of ±2A. Then, the calculated temperature difference and current difference are compared with the corresponding deviation ranges. If the temperature difference of the main heating zone is 10℃ (exceeding ±5℃) and the current difference is 3A (exceeding ±2A), it is determined that the first welding control parameter needs to be adjusted.

[0047] Subsequently, in this embodiment, the adjustment amount can be determined based on the temperature difference and the current difference. The initial power of the main heating zone is 10kW, and the power is adjusted to 11.5kW according to the difference to obtain the second welding control parameter. If the temperature difference and current difference of the side edge heating zones do not exceed the range, the second welding control parameter is consistent with the first welding control parameter.

[0048] Finally, the induction heating equipment can control the operation of the coils in each area based on the second welding control parameters. The main heating zone coil outputs power at 11.5kW, while the side edge supplementary heating zones output power at the original power to continue welding the target strip steel welding area. At the same time, the temperature and current are continuously monitored to ensure that the deviation is maintained within a reasonable range.

[0049] As can be seen from the above, this embodiment first divides the welding area into the main heating area and the two side edge supplementary heating areas based on the target strip steel specification data, and designs differentiated induction heating coils for different areas. At the same time, it determines the exclusive first welding control parameters for each area, avoiding the problem of incomplete melting at the edges or overheating in the middle caused by welding with a single overall welding parameter. It can adapt to the differences in heat demand of strip steel of different specifications.

[0050] In this embodiment, the temperature of the welding area and the coil current are acquired in real time during welding. Once the temperature or current deviates from the target value, the first welding control parameter is adjusted in time to obtain the second welding control parameter, so as to dynamically correct the deviation caused by power grid fluctuations, heat dissipation changes and other interferences, and ensure that the welding process always conforms to the ideal state.

[0051] In summary, this embodiment reduces welding defects and improves welding quality stability through zoned heating and dynamic parameter adjustment. It can also flexibly adapt to the welding needs of strip steel of different specifications, reduce the risk of quality fluctuations in strip steel welding, and better meet the actual needs of industrial production for strip steel welding.

[0052] In one embodiment of this application, the target strip steel specification data includes the target strip steel thickness, the target strip steel material, and the target welding area width;

[0053] Based on the target strip specifications, the target strip welding area is divided into multiple heating zones, including:

[0054] The target edge heat dissipation gradient zone is determined from multiple edge heat dissipation gradient zones based on the target strip material, and the first width ratio is determined based on the target edge heat dissipation gradient zone; the multiple edge heat dissipation gradient zones correspond one-to-one with multiple strip materials; the multiple edge heat dissipation gradient zones are obtained based on strip heat dissipation test data.

[0055] The first width ratio is adjusted based on the target strip thickness to obtain the second width ratio;

[0056] The target strip welding area is divided into multiple heating zones based on the ratio of the target welding area width to the second width.

[0057] In this embodiment, the heat dissipation test data of the strip steel includes heat dissipation test data of multiple strip steel samples, and the strip steel samples are made of different materials; the heat dissipation test data of the strip steel is obtained in the following way:

[0058] For each strip sample of strip material:

[0059] Based on the first interval, multiple temperature monitoring points are determined along the width of the strip sample.

[0060] The temperature change sequence of all temperature monitoring points within the first time period is obtained based on the first monitoring frequency; the heat dissipation rate distribution data is obtained based on the temperature change sequence of all temperature monitoring points, and the heat dissipation rate distribution data is used as the heat dissipation test data of the strip steel sample.

[0061] In this embodiment, the first width ratio is adjusted based on the target strip thickness to obtain the second width ratio. Specifically, this includes: determining a first adjustment coefficient based on the target strip thickness; and adjusting the first width ratio based on the first adjustment coefficient to obtain the second width ratio.

[0062] In this embodiment, the edge heat dissipation gradient zone refers to a specific region along the width of the strip sample where the heat dissipation rate gradually changes from the edge to the center. It corresponds one-to-one with the strip material and is used to determine the width ratio of the heating area. For example, the width ratio of the edge heat dissipation gradient zone for low-carbon steel can be 15% per side. The first width ratio refers to the initial ratio of the width of each heating area determined based on the target edge heat dissipation gradient zone to the total width of the welding area. For example, the main heating area accounts for 70%, and the two side edge supplementary heating areas each account for 15%. The first interval refers to the spacing between temperature monitoring points along the width of the strip sample, used to ensure the representativeness of the monitoring data. The first monitoring frequency refers to the frequency at which temperature data is collected from the temperature monitoring points, used to capture temperature changes in real time. The first time period refers to the duration of the collected temperature change sequence, used to calculate the heat dissipation rate. The heat dissipation rate distribution data refers to the data set composed of the heat dissipation rates of each monitoring point along the width of the strip sample, used to reflect the heat dissipation characteristics at different locations. The first adjustment coefficient refers to a coefficient determined based on the strip thickness, used to correct the first width ratio, used to adapt to the thermal requirements of strips with different thicknesses. The second width ratio refers to the final width ratio of each heating area obtained after correcting the first width ratio with the first adjustment coefficient.

[0063] In this embodiment, the induction coil of the induction heating device is fixed. However, the essence of adjusting the heating area ratio is to dynamically define the effective heating range within the strip welding area by controlling the energy output state (on / off, power level) of different areas of the coil, rather than changing the physical position or structure of the coil. The core logic is that the fixed coil is usually an integrated multi-area coil (i.e., the coil units corresponding to the main heating area and the edge supplementary heating area are integrated into the same coil assembly in advance, and the physical structure is fixed). By independently controlling the energy output of each coil unit, the heat input coverage range of different areas on the strip can be flexibly adjusted, thereby effectively achieving the adjustment of the heating area ratio.

[0064] In this embodiment, the underlying consideration is that the strip material directly determines the heat dissipation characteristics. Different materials exhibit different edge heat dissipation gradients. If the influence of material is ignored and a uniform width ratio is set, the heating area will not match the actual heat dissipation requirements. The strip thickness affects the heat conduction depth; thicker strips require a larger main heating area to ensure melting penetration, while thinner strips need to maintain the original ratio to avoid overheating. Therefore, the ratio needs to be adjusted based on the thickness. This embodiment obtains the edge heat dissipation gradient by conducting heat dissipation tests on different materials in advance, ensuring that the first width ratio conforms to the heat dissipation characteristics of the material. This embodiment sets a first interval, a first monitoring frequency, and a first time period to ensure the accuracy and representativeness of the heat dissipation rate distribution data, providing a reliable basis for determining the gradient. This embodiment introduces a first adjustment coefficient to correct the ratio, allowing the heating area division to adapt to thickness differences, ultimately ensuring that the coverage of each heating area is precisely matched with the strip specifications, laying the foundation for subsequent differentiated heating.

[0065] For example, in this embodiment, a strip heat dissipation test can be conducted first to obtain the edge heat dissipation gradient zone. For instance, strip samples with a width of 200 mm and a length of 300 mm are prepared for three materials: low-carbon steel, stainless steel, and galvanized steel, with three parallel samples for each material. In this embodiment, 21 temperature monitoring points can be arranged along the width direction of each sample at a first interval of 10 mm, with the first monitoring point 5 mm from the edge of the sample and the 21st monitoring point 5 mm from the edge on the other side.

[0066] In this embodiment, the sample is fixed in a test chamber at a constant temperature of 25℃ and an air velocity of 0.3m / s. Induction heating is used to heat the sample to 1200℃, and then heating is stopped. Temperature change sequences at each monitoring point are collected within a first time period of 20 seconds at a first monitoring frequency of 10Hz. This embodiment can calculate the heat dissipation rate based on the temperature changes at each monitoring point. For example, if the temperature at the first monitoring point drops from 1200℃ to 800℃ within 20 seconds, the heat dissipation rate is 20℃ / second; if the temperature at the 11th central monitoring point drops from 1200℃ to 900℃, the heat dissipation rate is 15℃ / second. This generates heat dissipation rate distribution data for each material. Areas with heat dissipation rates ≥ 1.5 times the central rate are defined as edge heat dissipation gradient zones. For low-carbon steel, the edge heat dissipation gradient zone width is determined to be 30mm, accounting for 15% of the sample width, as the first width proportion for this material (the main heating area is 140mm, accounting for 70%, and the two side edge supplementary heating areas are each 30mm, accounting for 15%).

[0067] In practical applications, if the target strip material is low-carbon steel, 3mm thick, and the welding area width is 80mm, this embodiment can first determine the first width ratio based on the material: 70% for the main heating zone and 15% each for the edge heat-replenishing zone. Then, based on the thickness, determine the first adjustment coefficient. Since 3mm is considered medium-thick strip steel, this embodiment can set the first adjustment coefficient to 1.05, resulting in a main heating zone ratio of 70% × 1.05 = 73.5% and an edge heat-replenishing zone ratio of 15% × (1 - (73.5% - 70%) / 2) = 13.25%.

[0068] Finally, the first adjustment coefficient is used to calculate the actual width of each heating zone based on the welding area width of 80mm. The width of the main heating zone is 80mm × 73.5% = 58.8mm, and the widths of the first and second side edge heat-replenishing zones are both 80mm × 13.25% = 10.6mm, thus completing the division of the target strip steel welding area.

[0069] This embodiment determines the ratio of the edge heat dissipation gradient zone to the first width based on the material, ensuring that the heating area is divided to match the heat dissipation characteristics of different materials, avoiding insufficient edge coverage or excessive central coverage due to material differences; this embodiment introduces a first adjustment coefficient based on the thickness correction ratio, which allows the heating area to adapt to the differences in heat conduction requirements caused by thickness, solving the problems of insufficient main heating area for thick strip steel and overheating of the edge for thin strip steel.

[0070] Meanwhile, the standardized heat dissipation test procedure ensures the reliability of the edge heat dissipation gradient data, providing an accurate basis for determining the proportion. Ultimately, this ensures precise matching between the heating zone division and the strip steel specifications, providing a reasonable regional basis for subsequent differentiated coil parameter design and heating control parameter setting, thereby improving welding quality stability and specification adaptability.

[0071] In one embodiment of this application, the target strip welding area temperature includes the main heating area temperature, the first side edge heat compensation area temperature, and the second side edge heat compensation area temperature; the induction heating coil current includes the main heating area current, the first side edge heat compensation area current, and the second side edge heat compensation area current; calculating the temperature difference between the target strip welding area temperature and the target temperature, and calculating the current difference between the induction heating coil current and the target current, includes:

[0072] Calculate the first temperature difference between the main heating zone and the target temperature, calculate the second temperature difference between the first side edge supplementary heating zone and the target temperature, and calculate the third temperature difference between the second side edge supplementary heating zone and the target temperature.

[0073] The target temperature difference is determined based on the first temperature difference, the second temperature difference, and the third temperature difference, and the target temperature difference is used as the temperature difference.

[0074] Calculate the first current difference between the main heating zone current and the target current, calculate the second current difference between the first side edge supplementary heating zone current and the target current, and calculate the third current difference between the second side edge supplementary heating zone current and the target current.

[0075] The target current difference is determined based on the first current difference, the second current difference, and the third current difference, and is used as the current difference.

[0076] In this embodiment, the first temperature difference reflects the heat input deviation of the main heating zone. The second temperature difference reflects the heat input deviation of the first side edge zone. The third temperature difference reflects the heat input deviation of the second side edge zone. The target temperature difference refers to a comprehensive temperature difference index determined based on the first, second, and third temperature differences, used to determine whether the overall temperature needs adjustment. For example, the target temperature difference can be the maximum absolute value, average value, or weighted average value among the three. The first current difference refers to the difference between the actual current of the main heating zone coil and the corresponding target current, reflecting the energy coupling state of the main heating zone. The second current difference refers to the difference between the actual current of the first side edge supplementary heating zone coil and the corresponding target current, reflecting the energy coupling state of that edge zone. The third current difference refers to the difference between the actual current of the second side edge supplementary heating zone coil and the corresponding target current, reflecting the energy coupling state of that edge zone; its value is usually consistent with the second current difference. The target current difference refers to a comprehensive current deviation index determined based on the first, second, and third current differences, used to determine whether the overall current needs adjustment. For example, the target current difference can be the maximum absolute value, average value, or weighted average value among the three.

[0077] In this embodiment, the underlying consideration is that the main heating zone and the two side edge supplementary heating zones have different functions. It is necessary to monitor the temperature and current deviations of each zone separately to accurately pinpoint the heat input problem. If only the overall deviation is calculated, it can easily mask local deviations in a single area, leading to misjudgments in the adjustment direction. Therefore, this embodiment achieves independent quantification of the deviations in each zone by dividing the deviations into first to third temperature differences and first to third current differences. Determining the target temperature difference and target current difference based on these zoned deviations forms an overall judgment basis. This avoids over-adjustment due to small deviations in a single area and prevents large local deviations from being masked by overall averaging, ensuring that deviation judgment balances zoned accuracy and overall coordination, providing reliable decision support for subsequent parameter adjustments.

[0078] For example, in this embodiment, a monitoring system can be deployed at the welding station. For instance, one infrared temperature probe can be installed above each of the main heating zone, the first side edge heating zone, and the second side edge heating zone. A current sensor can be connected in series in the power supply circuit of the induction heating coil in each corresponding area. After welding begins, the infrared temperature probes collect the actual temperature of each area at a frequency of 8 times per second, and the current sensors simultaneously collect the actual current of the coil in each area. Assume the preset target temperature for the main heating zone is 1500℃ and the target current is 50A, and the target temperature for the two side edge heating zones is 1400℃ and the target current is 55A. Assume that a certain data collection is as follows: actual temperature of the main heating zone is 1492℃ and the actual current is 48A; actual temperature of the first side edge heating zone is 1390℃ and the actual current is 53A; actual temperature of the second side edge heating zone is 1393℃ and the actual current is 53A.

[0079] This embodiment can calculate the zone deviation: the first temperature difference is 1500℃-1492℃=8℃; the second temperature difference is 1400℃-1390℃=10℃; the third temperature difference is 1400℃-1393℃=7℃; the first current difference is 50A-48A=2A; the second current difference is 55A-53A=2A; the third current difference is 55A-53A=2A.

[0080] In this embodiment, the maximum absolute value of 10°C among the temperature differences can be taken as the target temperature difference; and the maximum absolute value of 2A among the current differences can be taken as the target current difference.

[0081] This embodiment, by independently calculating the temperature and current differences of each heating zone, can accurately identify local deviations in the main heating zone or the edge supplementary heating zone, avoiding omissions caused by overall deviation calculations. This embodiment determines the comprehensive target deviation based on zoned deviations, balancing local accuracy with overall coordination and preventing over- or under-adjustment. This combination of zoned monitoring and comprehensive judgment makes deviation identification more accurate, providing a clear direction for subsequent parameter adjustments, reducing welding defects caused by misjudgments of deviations, and improving the stability and reliability of strip steel welding quality.

[0082] In one embodiment of this application, the first welding control parameters of the target strip welding area include the initial heating output power of each heating area; if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameters of the target strip welding area are adjusted, including:

[0083] If the temperature difference does not exceed the temperature deviation range and the current difference exceeds the current deviation range, then the first current compensation coefficient and the second current compensation coefficient are determined based on the current difference.

[0084] The initial heating output power of the main heating zone is adjusted based on the first current compensation coefficient to obtain the first current compensation power, which is then used as the second welding control parameter of the main heating zone.

[0085] The initial heating output power of the first side edge heating zone is adjusted based on the second current compensation coefficient to obtain the second current compensation power. The second current compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

[0086] In this embodiment, if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted, further including:

[0087] If the temperature difference exceeds the temperature deviation range and the current difference does not exceed the current deviation range, then the first temperature compensation coefficient and the second temperature compensation coefficient are determined based on the temperature difference.

[0088] The initial heating output power of the main heating zone is adjusted based on the first temperature compensation coefficient to obtain the first temperature compensation power, which is then used as the second welding control parameter of the main heating zone.

[0089] The initial heating output power of the first side edge heating zone is adjusted based on the second temperature compensation coefficient to obtain the second temperature compensation power. The second temperature compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

[0090] In this embodiment, the initial heating output power refers to the initial thermal energy output power of each heating zone preset based on the target strip steel specification data. The first current compensation coefficient is a coefficient determined based on current differences and used to adjust the initial heating output power of the main heating zone, adapting to the characteristics of the main heating zone coil. The second current compensation coefficient is a coefficient determined based on current differences and used to adjust the initial heating output power of the first side edge supplementary heating zone, adapting to the characteristics of the edge supplementary heating zone coil. The second current compensation coefficient differs from the first current compensation coefficient to match regional differences. The first current compensation power refers to the power obtained after adjusting the initial heating output power of the main heating zone using the first current compensation coefficient, and serves as the second welding control parameter for the main heating zone. The second current compensation power refers to the power obtained after adjusting the initial heating output power of the first side edge supplementary heating zone using the second current compensation coefficient, and serves as the second welding control parameter for both side edge supplementary heating zones.

[0091] The first temperature compensation coefficient is a coefficient determined based on temperature differences and used to adjust the initial heating output power of the main heating zone, adapting to the heat demand of the main heating zone. The larger the temperature difference, the more appropriate the coefficient needs to be adjusted. The second temperature compensation coefficient is a coefficient determined based on temperature differences and used to adjust the initial heating output power of the first side edge supplementary heating zone, adapting to the heat demand of the edge supplementary heating zone. The second temperature compensation coefficient differs from the first temperature compensation coefficient to match regional differences. The first temperature compensation power refers to the power obtained after adjusting the initial heating output power of the main heating zone using the first temperature compensation coefficient, and serves as the second welding control parameter for the main heating zone. The second temperature compensation power refers to the power obtained after adjusting the initial heating output power of the first side edge supplementary heating zone using the second temperature compensation coefficient, and serves as the second welding control parameter for both side edge supplementary heating zones.

[0092] The consideration behind this embodiment is that the coil parameters (number of turns, diameter, etc.) of the main heating zone and the edge heating zone are different, resulting in differences in energy coupling efficiency and heat demand. Therefore, the required compensation force differs for the same deviation. Furthermore, the influence mechanisms of current deviation and temperature deviation are different, necessitating the setting of specific compensation coefficients. When only the current deviation exceeds the range, this embodiment adjusts the power of the main heating zone and the edge heating zone using a first current compensation coefficient and a second current compensation coefficient, respectively, to accommodate the differences in coil characteristics between the two zones. When only the temperature deviation exceeds the range, this embodiment adjusts the power using a first current compensation coefficient and a second temperature compensation coefficient to match the differences in heat demand between the two zones. Simultaneously, the two edge heating zones share the same compensated power, ensuring symmetrical heat distribution on both sides of the strip, avoiding welding quality problems caused by unilateral deviations, and ensuring accurate parameter adjustments that conform to the regional characteristics.

[0093] For example, in this embodiment, the ranges of each compensation coefficient can be preset: the first current compensation coefficient is 0.45-0.55kW / A, the second current compensation coefficient is 0.35-0.45kW / A; the first temperature compensation coefficient is 0.18-0.22kW / ℃, the second temperature compensation coefficient is 0.15-0.18kW / ℃, and the initial heating output power of each heating area is determined: 10kW for the main heating area, 12kW for the first side edge supplementary heating area, and 12kW for the second side edge supplementary heating area, with a temperature deviation range of ±5℃ and a current deviation range of ±2A.

[0094] Scenario 1: Only current difference exceeds the range. If the monitored current in the main heating zone is 47A (target 50A), the current in the first side edge heat-replenishing zone is 52A, and the current in the second side edge heat-replenishing zone is 52A (target 55A), the average current difference is 3A, and the temperature is within the deviation range. In this embodiment, based on the current difference of 3A, a first current compensation coefficient of 0.5kW / A and a second current compensation coefficient of 0.4kW / A can be determined. In this embodiment, the first current compensation power can be calculated as: 10kW + 0.5kW / A × 3A = 11.5kW, which is used as the second welding control parameter for the main heating zone; in this embodiment, the second current compensation power can be calculated as: 12kW + 0.4kW / A × 3A = 13.2kW, which is used as the second welding control parameter for the two side edge heat-replenishing zones, and the parameters are transmitted to the equipment for adjustment.

[0095] Scenario 2: Temperature difference only exceeds the range. If the monitored temperatures are 1492℃ (target 1500℃) for the main heating zone, 1392℃ for the first side edge heat supply zone, and 1392℃ (target 1400℃) for the second side edge heat supply zone, and the current is within the deviation range, this embodiment can take the average temperature difference of 7℃ and determine the first temperature compensation coefficient as 0.2kW / ℃ and the second temperature compensation coefficient as 0.17kW / ℃. This embodiment can calculate the first temperature compensation power as 10kW + 0.2kW / ℃ × 7℃ = 11.4kW, which is used as the second welding control parameter for the main heating zone; this embodiment can calculate the second temperature compensation power as 12kW + 0.17kW / ℃ × 7℃ = 13.19kW, which is used as the second welding control parameter for the two side edge heat supply zones, and transmit the parameters to the equipment for adjustment.

[0096] After adjustment, this embodiment can continuously monitor the temperature and current of each area to ensure that the deviation returns to the allowable range. If it still exceeds the range, the above steps are repeated until the parameters are stable.

[0097] In this embodiment, if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted, further including:

[0098] If the temperature difference exceeds the temperature deviation range and the current difference exceeds the current deviation range, then the target parameter adjustment weight is determined based on the temperature difference and the current difference.

[0099] The first current compensation coefficient and the second current compensation coefficient are determined based on the current difference, and the first temperature compensation coefficient and the second temperature compensation coefficient are determined based on the temperature difference.

[0100] The first power compensation coefficient is obtained by weighting the first current compensation coefficient and the first temperature compensation coefficient based on the target parameter adjustment weights.

[0101] The second power compensation coefficient is obtained by weighting the second current compensation coefficient and the second temperature compensation coefficient based on the target parameter adjustment weights.

[0102] The initial heating output power of the main heating zone is adjusted based on the first power compensation coefficient to obtain the first compensation power, which is then used as the second welding control parameter of the main heating zone.

[0103] The initial heating output power of the first side edge heating zone is adjusted based on the second power compensation coefficient to obtain the second compensation power. The second compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

[0104] In this embodiment, the target parameter adjustment weight refers to the weight allocation ratio determined based on the influence of temperature and current differences, used for weighted calculation of the compensation coefficient. For example, the current difference weight is 0.6, and the temperature difference weight is 0.4. The first power compensation coefficient refers to the result of the weighted sum of the first current compensation coefficient and the first temperature compensation coefficient of the main heating zone according to the target parameter adjustment weight, used to adjust the power of the main heating zone. The second power compensation coefficient refers to the result of the weighted sum of the second current compensation coefficient and the second temperature compensation coefficient of the edge heating zone according to the target parameter adjustment weight, used to adjust the power of the edge heating zone. The first compensation power refers to the power after the initial heating output power of the main heating zone is adjusted by the first power compensation coefficient, and serves as the second welding control parameter of the main heating zone. The second compensation power refers to the power after the initial heating output power of the first side edge heating zone is adjusted by the second power compensation coefficient, and serves as the second welding control parameter of both side edge heating zones.

[0105] The underlying consideration in this embodiment is that when both temperature and current differences exceed their limits, their impact on welding quality differs, requiring a weighted allocation to balance and adjust priorities. Furthermore, the coil characteristics and heat demands of the main heating zone and the edge heating zone differ, necessitating the calculation of separate power compensation coefficients. This embodiment quantifies the impact percentage of the two types of deviations by determining the adjustment weights for the target parameters, preventing a single deviation from dominating the adjustment. The partitioned calculation of the first and second power compensation coefficients adapts to the differences in characteristics between the two zones. The shared second compensation power between the two edge heating zones ensures symmetrical heat distribution on both sides of the strip, guaranteeing that the adjustment considers both the degree of deviation impact and regional characteristics, thus improving the accuracy of parameter adjustment.

[0106] For example, in this embodiment, the following parameters can be preset based on the target strip steel specifications (such as low carbon steel, thickness 2mm, welding area width 80mm): target temperature of the main heating zone 1500℃, target current 50A, target temperature of the first side edge heating zone and the second side edge heating zone 1400℃, target current 55A; set temperature deviation range ±5℃, current deviation range ±2A.

[0107] Once the induction heating equipment begins welding, the infrared temperature probe and current sensor are simultaneously activated: the infrared temperature probe collects the actual temperature of each area every 0.1 seconds. For example, within a certain collection cycle, the actual temperature of the main heating area is 1492℃, the actual temperature of the first side edge supplementary heating area is 1393℃, and the actual temperature of the second side edge supplementary heating area is 1391℃. The current sensor simultaneously collects the actual current of the coil in each area, corresponding to 48.5A, 53.2A, and 53.0A. The collected data is transmitted to the database of the equipment control module in real time, ensuring data storage and retrieval without delay.

[0108] This embodiment can calculate the temperature and current differences between each zone. The control module extracts the collected data for that period from the database and calculates the zone deviation one by one. Specifically:

[0109] First temperature difference (main heating zone) = 1500℃ - 1492℃ = 8℃; Second temperature difference (first side edge supplementary heating zone) = 1400℃ - 1393℃ = 7℃; Third temperature difference (second side edge supplementary heating zone) = 1400℃ - 1391℃ = 9℃;

[0110] First current difference (main heating zone) = 50A - 48.5A = 1.5A; Second current difference (first side edge supplementary heating zone) = 55A - 53.2A = 1.8A; Third current difference (second side edge supplementary heating zone) = 55A - 53.0A = 2.0A.

[0111] This embodiment can use the maximum absolute value method to determine the overall deviation. Specifically:

[0112] Target temperature difference: Compare the absolute values ​​of the first temperature difference of 8℃, the second temperature difference of 7℃, and the third temperature difference of 9℃, and take the maximum absolute value of 9℃ as the target temperature difference (i.e., temperature difference).

[0113] Target current difference: Compare the absolute values ​​of the first current difference (1.5A), the second current difference (1.8A), and the third current difference (2.0A), and take the maximum absolute value of 2.0A as the target current difference (i.e., current difference). If you need to adapt to different welding scenarios, you can switch to the weighted average method: for example, calculate with a weight of 0.5 for the main heating zone and a weight of 0.25 for each of the two edge heat replenishment zones.

[0114] This embodiment can compare the calculated target temperature difference of 9℃ and target current difference of 2.0A with the preset deviation range (temperature ±5℃, current ±2A) to determine that the current temperature difference and current difference both exceed the allowable range, thus providing a quantitative basis for the subsequent adjustment of the first welding control parameters.

[0115] Corresponding to the strip welding control method based on induction heating equipment in the above embodiment, Figure 2This is a structural block diagram of a strip welding control device based on an induction heating equipment, provided as an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown. References Figure 2 The strip welding control device 20 based on induction heating equipment includes: a zone heating module 21, a data analysis module 22, and a welding control module 23.

[0116] The zone heating module 21 is used to divide the target strip steel welding area into multiple heating zones based on the target strip steel specification data, and determine the first welding control parameters for each heating zone; and to weld the target strip steel welding area based on the first welding control parameters for each heating zone.

[0117] The multiple heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the first side edge supplementary heating zone are the same as those of the induction heating coil corresponding to the second side edge supplementary heating zone; the coil parameters of the induction heating coil corresponding to the main heating zone are different from those of the induction heating coil corresponding to the first side edge supplementary heating zone.

[0118] Data analysis module 22 is used to acquire the temperature of the target strip welding area and the current of the induction heating coil during the welding process; calculate the temperature difference between the target strip welding area temperature and the target temperature; and calculate the current difference between the induction heating coil current and the target current.

[0119] The welding control module 23 is used to adjust the first welding control parameters of the target strip welding area to obtain the second welding control parameters if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range; and to perform welding on the target strip welding area based on the second welding control parameters.

[0120] In one embodiment of this application, the target strip steel specification data includes the target strip steel thickness, the target strip steel material, and the target welding area width; when the area heating module 21 divides the target strip steel welding area into multiple heating areas based on the target strip steel specification data, it is specifically used for:

[0121] The target edge heat dissipation gradient zone is determined from multiple edge heat dissipation gradient zones based on the target strip material, and the first width ratio is determined based on the target edge heat dissipation gradient zone; the multiple edge heat dissipation gradient zones correspond one-to-one with multiple strip materials; the multiple edge heat dissipation gradient zones are obtained based on strip heat dissipation test data.

[0122] The second width ratio is obtained by adjusting the first width ratio based on the strip thickness;

[0123] The target strip welding area is divided into multiple heating zones based on the ratio of the welding zone width to the second width.

[0124] In one embodiment of this application, the heat dissipation test data of the strip steel includes heat dissipation test data of multiple strip steel samples, and the strip steel samples are made of different materials; the heat dissipation test data of the strip steel is obtained in the following way:

[0125] For each strip sample of strip material:

[0126] Based on the first interval, multiple temperature monitoring points are determined along the width of the strip sample.

[0127] The temperature change sequence of all temperature monitoring points within the first time period is obtained based on the first monitoring frequency; the heat dissipation rate distribution data is obtained based on the temperature change sequence of all temperature monitoring points, and the heat dissipation rate distribution data is used as the heat dissipation test data of the strip steel sample.

[0128] In one embodiment of this application, when the regional heating module 21 adjusts the first width ratio based on the strip thickness to obtain the second width ratio, it is specifically used to: determine a first adjustment coefficient based on the strip thickness; and adjust the first width ratio based on the first adjustment coefficient to obtain the second width ratio.

[0129] In one embodiment of this application, the target strip welding area temperature includes the main heating area temperature, the first side edge heat compensation area temperature, and the second side edge heat compensation area temperature; the induction heating coil current includes the main heating area current, the first side edge heat compensation area current, and the second side edge heat compensation area current; the data analysis module 22, when calculating the temperature difference between the target strip welding area temperature and the target temperature, and calculating the current difference between the induction heating coil current and the target current, is specifically used for:

[0130] Calculate the first temperature difference between the main heating zone and the target temperature, calculate the second temperature difference between the first side edge supplementary heating zone and the target temperature, and calculate the third temperature difference between the second side edge supplementary heating zone and the target temperature.

[0131] The target temperature difference is determined based on the first temperature difference, the second temperature difference, and the third temperature difference, and the target temperature difference is used as the temperature difference.

[0132] Calculate the first current difference between the main heating zone current and the target current, calculate the second current difference between the first side edge supplementary heating zone current and the target current, and calculate the third current difference between the second side edge supplementary heating zone current and the target current.

[0133] The target current difference is determined based on the first current difference, the second current difference, and the third current difference, and is used as the current difference.

[0134] In one embodiment of this application, the first welding control parameters of the target strip welding area include the initial heating output power of each heating area; when the welding control module 23 adjusts the first welding control parameters of the target strip welding area if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, it is specifically used for:

[0135] If the temperature difference does not exceed the temperature deviation range and the current difference exceeds the current deviation range, then the first current compensation coefficient and the second current compensation coefficient are determined based on the current difference.

[0136] The initial heating output power of the main heating zone is adjusted based on the first current compensation coefficient to obtain the first current compensation power, which is then used as the second welding control parameter of the main heating zone.

[0137] The initial heating output power of the first side edge heating zone is adjusted based on the second current compensation coefficient to obtain the second current compensation power. The second current compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

[0138] In one embodiment of this application, when the welding control module 23 adjusts the first welding control parameters of the target strip welding area if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, it is further configured to:

[0139] If the temperature difference exceeds the temperature deviation range and the current difference does not exceed the current deviation range, then the first temperature compensation coefficient and the second temperature compensation coefficient are determined based on the temperature difference.

[0140] The initial heating output power of the main heating zone is adjusted based on the first temperature compensation coefficient to obtain the first temperature compensation power, which is then used as the second welding control parameter of the main heating zone.

[0141] The initial heating output power of the first side edge heating zone is adjusted based on the second temperature compensation coefficient to obtain the second temperature compensation power. The second temperature compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

[0142] See Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided according to an embodiment of this application. Figure 3The electronic device 300 in this embodiment may include one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memories 304 store computer programs, including program instructions. The processors 301 execute the program instructions stored in the memories 304. Specifically, the processors 301 are configured to invoke the program instructions to perform the functions of the modules in the aforementioned device embodiments, for example... Figure 2 The functions of the heating module 21, data analysis module 22, and welding control module 23 in the area shown are illustrated.

[0143] It should be understood that, in the embodiments of this application, the processor 301 may be a central processing unit (CPU), but it may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0144] Input device 302 may include a touchpad, a fingerprint sensor (for collecting the user's fingerprint information and fingerprint orientation information), a microphone, etc., and output device 303 may include a display (LCD, etc.), a speaker, etc.

[0145] The memory 304 may include read-only memory and random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include non-volatile random access memory. For example, the memory 304 may also store information about the strip number.

[0146] In specific implementations, the processor 301, input device 302, and output device 303 described in the embodiments of this application can execute the implementation methods described in the embodiments of the strip welding control method based on induction heating equipment provided in the embodiments of this application, or they can execute the implementation methods of the electronic device 300 described in the embodiments of this application, which will not be repeated here.

[0147] In another embodiment of this application, a computer-readable storage medium is provided. This computer-readable storage medium stores a computer program, which includes program instructions. When executed by a processor, the program instructions implement all or part of the processes in the methods described above. Alternatively, the computer program can instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include any entity or device capable of carrying computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0148] The computer-readable storage medium can be an internal storage unit of the electronic device in any of the foregoing embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD) card, flash card, etc., equipped on the electronic device. Furthermore, the computer-readable storage medium can include both internal and external storage units of the electronic device. The computer-readable storage medium is used to store computer programs and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been output or will be output.

[0149] Those skilled in the art will recognize that the modules / units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0150] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the electronic devices and units described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0151] In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules / units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules, units, or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces or modules / units, or it may be an electrical, mechanical, or other form of connection.

[0152] The modules / units described as separate components may or may not be physically separate. Similarly, the components shown as modules / units may or may not be physical modules / units; they may be located in one place or distributed across multiple network modules / units. Some or all of the modules / units can be selected to achieve the purpose of the embodiments of this application, depending on actual needs.

[0153] Furthermore, the functional modules / units in the various embodiments of this application can be integrated into one processing module / unit, or each module / unit can exist physically separately, or two or more modules / units can be integrated into one module / unit. The integrated modules / units described above can be implemented in hardware or in the form of software functional modules / units.

[0154] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for controlling strip welding based on induction heating equipment, characterized in that, include: Based on the target strip steel specification data, the target strip steel welding area is divided into multiple heating zones, and the first welding control parameters for each heating zone are determined. Welding is performed on the target strip steel welding area based on the first welding control parameters of each heating zone; the target strip steel specification data includes the target strip steel thickness, the target strip steel material, and the target welding area width. The plurality of heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; The coil parameters of the induction heating coil corresponding to the first side edge heating area are the same as those of the induction heating coil corresponding to the second side edge heating area; the coil parameters of the induction heating coil corresponding to the main heating area are different from those of the induction heating coil corresponding to the first side edge heating area. The temperature of the target strip welding area and the current of the induction heating coil are obtained during the welding process; the temperature difference between the target strip welding area temperature and the target temperature are calculated, and the current difference between the induction heating coil current and the target current is calculated. If the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted to obtain the second welding control parameter. Welding is performed on the target strip steel welding area based on the second welding control parameters; The step of dividing the target strip steel welding area into multiple heating zones based on the target strip steel specification data includes: determining a target edge heat dissipation gradient zone from multiple edge heat dissipation gradient zones based on the target strip steel material; determining a first width ratio based on the target edge heat dissipation gradient zone; the multiple edge heat dissipation gradient zones correspond one-to-one with multiple strip steel materials; the multiple edge heat dissipation gradient zones are obtained based on strip steel heat dissipation test data; adjusting the first width ratio based on the target strip steel thickness to obtain a second width ratio; and dividing the target strip steel welding area into multiple heating zones based on the target welding area width and the second width ratio.

2. The strip welding control method based on induction heating equipment as described in claim 1, characterized in that, The heat dissipation test data of the strip steel includes heat dissipation test data of multiple strip steel samples, and the strip steel samples of the multiple strip steel samples are made of different materials; The heat dissipation test data for the steel strip was obtained through the following methods: For each strip sample of strip material: Based on the first interval, multiple temperature monitoring points are determined along the width of the strip sample. The temperature change sequence of all temperature monitoring points within a first time period is obtained based on the first monitoring frequency; the heat dissipation rate distribution data is obtained based on the temperature change sequence of all temperature monitoring points, and the heat dissipation rate distribution data is used as the heat dissipation test data of the strip steel sample.

3. The strip welding control method based on induction heating equipment as described in claim 1, characterized in that, The step of adjusting the first width ratio based on the target strip thickness to obtain the second width ratio includes: A first adjustment coefficient is determined based on the target strip thickness; The first width ratio is adjusted based on the first adjustment coefficient to obtain the second width ratio.

4. The strip welding control method based on induction heating equipment as described in claim 1, characterized in that, The temperature of the target strip welding area includes the temperature of the main heating zone, the temperature of the first side edge heat compensation zone, and the temperature of the second side edge heat compensation zone; the current of the induction heating coil includes the current of the main heating zone, the current of the first side edge heat compensation zone, and the current of the second side edge heat compensation zone. The calculation of the temperature difference between the target strip welding area temperature and the target temperature, and the calculation of the current difference between the induction heating coil current and the target current, include: Calculate the first temperature difference between the main heating zone temperature and the target temperature, calculate the second temperature difference between the first side edge supplementary heating zone temperature and the target temperature, and calculate the third temperature difference between the second side edge supplementary heating zone temperature and the target temperature; A target temperature difference is determined based on the first temperature difference, the second temperature difference, and the third temperature difference, and the target temperature difference is used as the temperature difference. Calculate the first current difference between the main heating zone current and the target current, calculate the second current difference between the first side edge supplementary heating zone current and the target current, and calculate the third current difference between the second side edge supplementary heating zone current and the target current. A target current difference is determined based on the first current difference, the second current difference, and the third current difference, and the target current difference is used as the current difference.

5. The strip welding control method based on induction heating equipment as described in claim 1, characterized in that, The first welding control parameter of the target strip welding area includes the initial heating output power of each heating zone; If the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted, including: If the temperature difference does not exceed the temperature deviation range and the current difference exceeds the current deviation range, then a first current compensation coefficient and a second current compensation coefficient are determined based on the current difference. The initial heating output power of the main heating zone is adjusted based on the first current compensation coefficient to obtain the first current compensation power, and the first current compensation power is used as the second welding control parameter of the main heating zone. The initial heating output power of the first side edge heating zone is adjusted based on the second current compensation coefficient to obtain the second current compensation power. The second current compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

6. The strip welding control method based on induction heating equipment as described in claim 5, characterized in that, If the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range, the first welding control parameter of the target strip welding area is adjusted, further including: If the temperature difference exceeds the temperature deviation range and the current difference does not exceed the current deviation range, then a first temperature compensation coefficient and a second temperature compensation coefficient are determined based on the temperature difference. The initial heating output power of the main heating zone is adjusted based on the first temperature compensation coefficient to obtain the first temperature compensation power, and the first temperature compensation power is used as the second welding control parameter of the main heating zone. The initial heating output power of the first side edge heating zone is adjusted based on the second temperature compensation coefficient to obtain the second temperature compensation power. The second temperature compensation power is used as the second welding control parameter corresponding to the first side edge heating zone and the second side edge heating zone.

7. A strip welding control device based on an induction heating equipment, characterized in that, include: The zone heating module is used to divide the target strip steel welding area into multiple heating zones based on the target strip steel specification data, and determine the first welding control parameters for each heating zone; and to weld the target strip steel welding area based on the first welding control parameters for each heating zone; the target strip steel specification data includes the target strip steel thickness, the target strip steel material, and the target welding area width; The regional heating module is specifically used to determine a target edge heat dissipation gradient zone from multiple edge heat dissipation gradient zones based on the target strip material, and to determine a first width ratio based on the target edge heat dissipation gradient zone; the multiple edge heat dissipation gradient zones correspond one-to-one with multiple strip materials; the multiple edge heat dissipation gradient zones are obtained based on strip heat dissipation test data; and the first width ratio is adjusted based on the target strip thickness to obtain a second width ratio. The target strip welding area is divided into multiple heating zones based on the ratio of the target welding area width to the second width. The plurality of heating zones include a main heating zone, a first side edge supplementary heating zone, and a second side edge supplementary heating zone; The coil parameters of the induction heating coil corresponding to the first side edge heating area are the same as those of the induction heating coil corresponding to the second side edge heating area; the coil parameters of the induction heating coil corresponding to the main heating area are different from those of the induction heating coil corresponding to the first side edge heating area. The data analysis module is used to acquire the temperature of the target strip welding area and the current of the induction heating coil during the welding process; calculate the temperature difference between the target strip welding area temperature and the target temperature; and calculate the current difference between the induction heating coil current and the target current. The welding control module is used to adjust the first welding control parameters of the target strip welding area to obtain the second welding control parameters if the temperature difference exceeds the temperature deviation range and / or the current difference exceeds the current deviation range; and to perform welding on the target strip welding area based on the second welding control parameters.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1 to 6.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1 to 6.

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