Magnetic deflection correction welding apparatus, control methods, systems, devices and media

Abstract

This invention discloses a magnetic blowout correction welding device and its control method, system, apparatus, and medium. The device includes: a welding apparatus; multiple pairs of excitation devices, each pair including two magnetic cores with equal distance between adjacent magnetic cores; multiple temperature sensors disposed on the side of the magnetic cores near the arc; and a control device for controlling the supply of excitation current to the multiple pairs of excitation devices after detecting that the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, thereby generating a rotating magnetic field through the multiple pairs of excitation devices. This increases the arc deflection through Lorentz force, determines the magnetic blowout direction based on multiple second temperature information, and corrects the magnetic blowout direction using the Lorentz force generated by each excitation device until the maximum temperature difference between multiple third temperature information is less than the preset temperature difference threshold. The magnetic blowout correction welding device of this invention can improve the detection accuracy of the magnetic blowout direction and has low detection cost.

Description

Technical Field

[0001] This invention relates to the field of welding-related technologies, and in particular to magnetic deflection correction welding apparatus and its control methods, systems, devices and media. Background Technology

[0002] Arc magnetic blow refers to the phenomenon where the centerline of the electric arc deviates from the welding torch axis. Arc magnetic blow is caused by the uneven distribution of magnetic field lines around the arc, leading to this deviation. Arc magnetic blow causes the welding arc to lose its rigidity, resulting in arc wobbling and instability, ultimately causing the arc to extinguish. Arc instability leads to irregular and excessive molten droplets, resulting in poor weld formation and defects such as incomplete penetration and slag inclusions. Furthermore, magnetic blow can introduce harmful gases, affecting the internal quality of the weld. Therefore, it is essential to minimize the harmful effects of magnetic blow.

[0003] In existing technologies, the direction and extent of magnetic arc blow are typically determined by acquiring image information of the welding area. However, if the degree of magnetic blow is small, it is difficult to accurately determine the direction and extent of magnetic blow by acquiring image information of the welding area. This requires sophisticated image processing, increases detection costs, and makes the correction process for magnetic arc blow more difficult, with unsatisfactory correction results. Therefore, achieving accurate detection of the direction and extent of magnetic blow while controlling detection costs has become an urgent problem to be solved. Summary of the Invention

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a magnetic deflection correction welding device, which can improve the detection accuracy of magnetic deflection direction and has low detection cost.

[0005] The present invention also provides a control method for a magnetic deflection correction welding device, a control system for the magnetic deflection correction welding device, a control device, and a computer-readable storage medium.

[0006] A magnetic deflection correction welding apparatus according to a first aspect embodiment of the present invention includes:

[0007] A welding device having a welding torch, wherein a fixing element is fitted on the side of the welding torch for emitting an electric arc;

[0008] Multiple pairs of excitation devices are mounted on the fixing member. Each pair of excitation devices includes two magnetic cores. The distance between two adjacent magnetic cores is equal. The side of each magnetic core near the electric arc extends beyond the emission point of the electric arc. A magnetic coil is wound around the side of each magnetic core away from the electric arc.

[0009] Multiple temperature sensors are disposed one-to-one on the side of the multiple magnetic cores near the electric arc, and each temperature sensor is equidistant from the emission point of the electric arc. The temperature sensors are used to detect the temperature information at the corresponding magnetic core.

[0010] A control device, electrically connected to multiple pairs of excitation devices, is used to control the supply of excitation current to multiple pairs of excitation devices after detecting that the maximum temperature difference between multiple first temperature information corresponding to multiple magnetic cores is greater than or equal to a preset temperature difference threshold. This causes the multiple pairs of excitation devices to generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field. The degree of arc deflection is increased by the Lorentz force. The magnetic deflection direction is determined based on multiple second temperature information corresponding to multiple magnetic cores detected under the action of the rotating magnetic field. The magnetic deflection direction is corrected by the Lorentz force generated by each excitation device. Multiple third temperature information corresponding to multiple magnetic cores is determined until the maximum temperature difference between multiple third temperature information is less than the preset temperature difference threshold.

[0011] The magnetic deflection correction welding apparatus according to embodiments of the present invention has at least the following beneficial effects:

[0012] Multiple temperature sensors can detect the temperature information at the corresponding magnetic core. Since the distance between the multiple temperature sensors and the arc's emission point is the same, if no magnetic blow occurs, the maximum temperature difference between the multiple first temperature readings is less than a preset temperature difference threshold. If the maximum temperature difference between the multiple first temperature readings is greater than or equal to the preset temperature difference threshold, it is determined that the arc has undergone magnetic blow. Magnetic blow is determined by comparing the temperatures in various directions of the arc. The device is simple and has low detection costs. By supplying excitation current to multiple pairs of excitation devices, a rotating magnetic field can be formed, causing the arc to rotate one revolution with the change of the rotating magnetic field. The Lorentz force increases the arc's deflection, avoiding situations where the magnetic blow is too small to accurately detect. Increasing the arc's deflection through the Lorentz force allows for more accurate detection of the arc's magnetic blow direction, enabling the use of the Lorentz force generated by each excitation device to correct the magnetic blow direction.

[0013] According to some embodiments of the present invention, it further includes:

[0014] An inclination sensor is mounted on the welding torch and electrically connected to the control device. The inclination sensor is used to detect the tilt angle of the welding torch.

[0015] A mechanical transmission structure is provided on the welding torch and electrically connected to the control device. The mechanical transmission structure is used to adjust the tilt angle of the welding torch so that the welding torch is perpendicular to the surface of the workpiece to be welded.

[0016] According to some embodiments of the present invention, the excitation device is in pairs, each pair of excitation devices includes two magnetic cores, the distance between two adjacent magnetic cores is equal, the side of the four magnetic cores near the electric arc extends beyond the emission point of the electric arc, and the side of the four magnetic cores away from the electric arc is wound with a magnetic coil.

[0017] A control method for a magnetic deflection correction welding apparatus according to a second aspect of the present invention, applied to the control apparatus described in the first aspect embodiment, the control method for the magnetic deflection correction welding apparatus comprising the following steps:

[0018] Obtain multiple first temperature information corresponding to each of the multiple magnetic cores;

[0019] When the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, multiple pairs of excitation currents are controlled to be supplied to the excitation devices so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of electric arc deflection through the action of Lorentz force. Wherein, the maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs.

[0020] Determine multiple second temperature information corresponding one-to-one at multiple magnetic cores under the action of the rotating magnetic field;

[0021] The magnetic deflection direction is determined based on multiple pieces of the second temperature information;

[0022] The direction of magnetic deflection is corrected by generating Lorentz force using each of the excitation devices, and multiple third temperature information corresponding to each of the multiple magnetic cores is determined until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

[0023] The control method of the magnetic deflection correction welding apparatus according to embodiments of the present invention has at least the following beneficial effects:

[0024] Multiple temperature sensors can detect the temperature information at the corresponding magnetic core. Since the distance between the multiple temperature sensors and the arc's emission point is the same, if the arc does not experience magnetic blow, the maximum temperature difference between the multiple first temperature readings is less than a preset temperature difference threshold. If the maximum temperature difference between the multiple first temperature readings is greater than or equal to the preset temperature difference threshold, it is determined that the arc has experienced magnetic blow. Magnetic blow is determined by comparing the temperatures in various directions of the arc. The device is simple and has low detection costs. By supplying excitation current to multiple pairs of excitation devices, a rotating magnetic field can be formed, causing the arc to rotate one revolution with the change of the rotating magnetic field. The Lorentz force increases the arc's deflection, avoiding situations where the magnetic blow is too small to accurately detect. Increasing the arc's deflection through the Lorentz force allows for more accurate detection of the arc's magnetic blow direction, enabling the use of the Lorentz force generated by each excitation device to correct the magnetic blow direction.

[0025] According to some embodiments of the present invention, when the maximum temperature difference between a plurality of the first temperature information is greater than or equal to a preset temperature difference threshold, the excitation current of multiple pairs of the excitation devices is controlled to generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the deflection of the electric arc through the action of the Lorentz force, wherein the maximum temperature difference between a plurality of the first temperature information is greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs, the method includes the following steps:

[0026] Determine the highest and lowest temperatures among multiple sets of the first temperature information;

[0027] If the difference between the highest temperature and the lowest temperature is greater than or equal to the preset temperature difference threshold, multiple pairs of excitation currents are controlled to be supplied to the excitation devices so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of arc deflection through the action of Lorentz force. The difference between the highest temperature and the lowest temperature being greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs.

[0028] According to some embodiments of the present invention, the control of supplying excitation current to multiple pairs of excitation devices to generate a rotating magnetic field, causing the electric arc to rotate one revolution as the rotating magnetic field changes, and increasing the deflection of the electric arc through the Lorentz force, includes the following steps:

[0029] In a counterclockwise or clockwise direction, excitation currents of the same magnitude but opposite directions are sequentially passed through the two magnetic coils in the pair of excitation devices until a rotating magnetic field is generated. This causes the electric arc to rotate one revolution as the rotating magnetic field changes, and the degree of arc deflection is increased by the Lorentz force.

[0030] According to some embodiments of the present invention, the magnetic deflection correction welding device further includes an angle sensor and a mechanical transmission structure; the control method of the magnetic deflection correction welding device further includes the following steps:

[0031] Obtain the tilt angle of the welding torch detected by the tilt sensor;

[0032] The mechanical transmission structure is controlled according to the tilt angle to adjust the welding torch so that it is perpendicular to the surface of the workpiece to be welded.

[0033] The control system of the magnetic deflection correction welding apparatus according to a third aspect embodiment of the present invention is applied to the control apparatus described in the first aspect embodiment, the control system of the magnetic deflection correction welding apparatus comprising:

[0034] The first temperature information acquisition unit is used to acquire multiple first temperature information corresponding to each of the multiple magnetic cores;

[0035] A rotating magnetic field generating unit is used to control the introduction of excitation currents into multiple pairs of excitation devices when the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of electric arc deflection through the action of Lorentz force, wherein the maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs.

[0036] The second temperature information determination unit is used to determine multiple second temperature information corresponding one-to-one at multiple magnetic cores under the action of the rotating magnetic field.

[0037] A magnetic deflection direction determination unit is used to determine the magnetic deflection direction based on multiple pieces of the second temperature information;

[0038] The magnetic deflection correction unit is used to generate Lorentz force using each of the excitation devices to correct the magnetic deflection direction and to determine multiple third temperature information corresponding to multiple magnetic cores, until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

[0039] The control system of the magnetic deflection correction welding apparatus according to an embodiment of the present invention has at least the following beneficial effects:

[0040] Multiple temperature sensors can detect the temperature information at the corresponding magnetic core. Since the distance between the multiple temperature sensors and the arc's emission point is the same, if no magnetic blow occurs, the maximum temperature difference between the multiple first temperature readings is less than a preset temperature difference threshold. If the maximum temperature difference between the multiple first temperature readings is greater than or equal to the preset temperature difference threshold, it is determined that the arc has undergone magnetic blow. Magnetic blow is determined by comparing the temperatures in various directions of the arc. The device is simple and has low detection costs. By supplying excitation current to multiple pairs of excitation devices, a rotating magnetic field can be formed, causing the arc to rotate one revolution with the change of the rotating magnetic field. The Lorentz force increases the arc's deflection, avoiding situations where the magnetic blow is too small to accurately detect. Increasing the arc's deflection through the Lorentz force allows for more accurate detection of the arc's magnetic blow direction, enabling the use of the Lorentz force generated by each excitation device to correct the magnetic blow direction.

[0041] According to a fourth aspect embodiment of the present invention, a control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method for the magnetic deflection correction welding apparatus as described in the second aspect embodiment above. Since the control device employs all the technical solutions of the control method for the magnetic deflection correction welding apparatus of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0042] According to a fifth aspect embodiment of the present invention, a computer-readable storage medium stores computer-executable instructions for performing a control method for a magnetic deflection correction welding apparatus as described in the second aspect embodiment above. Since the computer-readable storage medium employs all the technical solutions of the control method for the magnetic deflection correction welding apparatus of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0043] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0044] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0045] Figure 1 This is a partial structural schematic diagram of a magnetic deflection correction welding device according to an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the arc position without magnetic blowout according to an embodiment of the present invention;

[0047] Figure 3 This is a schematic diagram of the arc position during magnetic deflection according to an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of the rotation of an electric arc under the action of a rotating magnetic field according to an embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of correcting magnetic blowout according to an embodiment of the present invention;

[0050] Figure 6 This is a flowchart of a control method for a magnetic deflection correction welding device according to an embodiment of the present invention.

[0051] Figure label:

[0052] Welding torch 100;

[0053] Fastener 200;

[0054] Tilt sensor 300;

[0055] Magnetic core 400, magnetic coil 401;

[0056] Temperature sensor 500;

[0057] Arc 600. Detailed Implementation

[0058] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0059] In the description of this invention, the use of terms such as "first," "second," etc., is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0060] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0061] In the description of this invention, it should be noted that, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0062] The following will combine Figures 1 to 6 The magnetic deflection correction welding apparatus of the present invention will be clearly and completely described below. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0063] According to a first aspect of the present invention, a magnetic deflection correction welding apparatus includes a welding apparatus, multiple pairs of excitation devices, multiple temperature sensors 500, and a control device.

[0064] A welding device having a welding torch 100, wherein a fixing member 200 is fitted on one side of the welding torch 100 for emitting an electric arc 600;

[0065] Multiple pairs of excitation devices are mounted on the fixing member 200. Each pair of excitation devices includes two magnetic cores 400. The distance between two adjacent magnetic cores 400 is equal. The side of each magnetic core 400 near the electric arc 600 extends beyond the emission point of the electric arc 600. A magnetic coil 401 is wound around the side of each magnetic core 400 away from the electric arc 600.

[0066] Multiple temperature sensors 500 are respectively set on the side of multiple magnetic cores 400 near the electric arc 600, and the distance between each temperature sensor 500 and the emission point of the electric arc 600 is the same. The temperature sensor 500 is used to detect the temperature information at the corresponding magnetic core 400.

[0067] The control device is electrically connected to multiple pairs of excitation devices. After detecting that the maximum temperature difference between multiple first temperature information corresponding to multiple magnetic cores 400 is greater than or equal to a preset temperature difference threshold, the control device controls the supply of excitation current to the multiple pairs of excitation devices. This causes the multiple pairs of excitation devices to generate a rotating magnetic field, causing the electric arc 600 to rotate one revolution with the change of the rotating magnetic field. The Lorentz force increases the deflection of the electric arc 600. Based on the multiple second temperature information corresponding to multiple magnetic cores 400 detected under the rotating magnetic field, the magnetic deflection direction is determined. The Lorentz force generated by each excitation device corrects the magnetic deflection direction. Multiple third temperature information corresponding to multiple magnetic cores 400 is also determined until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

[0068] like Figure 1 As shown, the fastener 200 adopts a sleeve structure, which can be directly inserted into the welding gun 100 and fixed. The specific fixing structure and fixing method between the fastener 200 and the welding gun 100 can be selected according to the actual situation, as long as it can be fixed on the welding gun 100, and no specific limitation is made here.

[0069] Multiple pairs of excitation devices are evenly arranged on the fixing member 200. The center point of each pair of excitation devices is located on the axis of the welding torch 100, and the distance between two adjacent magnetic cores 400 is equal to ensure the generation of a uniform magnetic field. The side of each magnetic core 400 closest to the arc 600 extends beyond the emission point of the arc 600 to ensure that the external magnetic field generated by the excitation device can affect the direction of the arc 600. A magnetic coil 401 is wound around the side of each magnetic core 400 furthest from the arc 600. Insulating material is coated between each magnetic core 400 and the magnetic coil 401, and the number of turns and the size of the magnetic coil 401 of each magnetic core 400 are the same to ensure that by passing excitation currents of the same magnitude and opposite directions to the two magnetic cores 400 in a pair of excitation devices, a pair of opposite magnetic poles can be formed, thereby generating an external magnetic field that causes the arc 600 to deflect.

[0070] like Figure 2 As shown, Figure 2 This is a schematic diagram of the position of an electric arc without magnetic blowout according to an embodiment of the present invention. The distances between the multiple temperature sensors 500 and the emission point of the electric arc 600 are all the same. When the electric arc 600 does not shift, the maximum temperature difference between the multiple temperature information detected by the multiple temperature sensors 500 is less than a preset temperature difference threshold.

[0071] like Figure 3 As shown, Figure 3 This is a schematic diagram of the arc position during magnetic blowout according to an embodiment of the present invention. If the maximum temperature difference between multiple temperature information detected by multiple temperature sensors 500 is greater than or equal to a preset temperature difference threshold, it indicates that the distance between the arc 600 and each temperature sensor 500 differs too much, and it is determined that the arc 600 has shifted.

[0072] like Figure 4 As shown, Figure 4 This is a schematic diagram of the rotation of an electric arc 600 under the action of a rotating magnetic field according to an embodiment of the present invention. Figure 4 (a), (b), (c), and (d) in the diagram represent the four middle positions of the arc 600 during one rotation under the influence of the rotating magnetic field. By passing excitation currents of the same magnitude but opposite directions to the two magnetic cores 400 in a pair of excitation devices, a pair of opposite magnetic poles can be formed, thereby generating an external magnetic field that causes the arc 600 to deflect. By sequentially passing excitation currents of the same magnitude but opposite directions to the two magnetic coils 401 in a pair of excitation devices in a counterclockwise or clockwise direction, a rotating magnetic field can be generated, causing the arc 600 to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of deflection of the arc 600 through the Lorentz force. Figure 3 and Figure 4It can be seen that after the electric arc 600 rotates once with the change of the rotating magnetic field, the degree of deflection of the electric arc 600 increases. This can avoid the situation where the magnetic blow is too small to be accurately detected. By increasing the degree of deflection of the electric arc 600 through the action of the Lorentz force, the magnetic blow direction of the electric arc 600 can be detected more accurately. It can also facilitate the use of various excitation devices to generate Lorentz force to correct the magnetic blow direction, resulting in a better correction effect for the magnetic blow direction.

[0073] Each temperature sensor 500 corresponds to a spatial coordinate. After multiple temperature sensors 500 detect the temperature information at the corresponding magnetic core 400, they transmit it to the control device. The control device generates a three-dimensional temperature distribution on a spatial surface with the tungsten electrode of the welding torch 100 as the central axis and the distance from the central axis to the temperature sensor 500 as the radius. The magnetic blow direction is calculated based on the temperature information at each spatial location. By comparing the temperatures in various directions of the arc 600, it is determined whether magnetic blow has occurred in the arc 600. The device is simple and the detection cost is low.

[0074] It should be noted that the method for calculating the magnetic deflection direction using temperature information from different spatial locations is a prior art technique known to those skilled in the art, and the specific modeling and calculation methods will not be described in detail here.

[0075] When using the Lorentz force generated by each excitation device to correct the magnetic blow direction, the excitation devices no longer receive excitation currents of the same magnitude but opposite directions in pairs. Instead, two or more of the excitation currents can be selected based on the magnetic blow direction of the arc 600. The magnitude and direction of the excitation current supplied to each excitation device need to be determined according to the magnetic blow direction of the arc 600. Figure 5 For example, Figure 5 This is a schematic diagram of a method for correcting magnetic blowout according to an embodiment of the present invention. Figure 5 The upper and lower excitation devices are supplied with excitation currents of the same magnitude and direction, making the magnetic pole the S pole. The right excitation device is supplied with an excitation current of the same magnitude but opposite direction to the upper and lower excitation devices, making the magnetic pole the N pole. This generates Lorentz forces in two directions, pushing the electric arc 600 to the center point.

[0076] It should be noted that the principle and process of using various excitation devices to generate Lorentz force to correct the direction of magnetic blow are existing technologies known to those skilled in the art, and will not be explained in detail here.

[0077] According to the magnetic blow correction welding device of the present invention, multiple temperature sensors 500 can detect the temperature information at the corresponding magnetic core 400. Since the multiple temperature sensors 500 are at the same distance from the emission point of the electric arc 600, if the electric arc 600 does not experience magnetic blow, the maximum temperature difference between the multiple first temperature information is less than a preset temperature difference threshold. If the maximum temperature difference between the multiple first temperature information is detected to be greater than or equal to the preset temperature difference threshold, it is determined that the electric arc 600 has experienced magnetic blow. The device is simple and has low detection cost. By supplying excitation current to multiple pairs of excitation devices, a rotating magnetic field can be formed, causing the arc 600 to rotate one revolution as the rotating magnetic field changes. The Lorentz force increases the deflection of the arc 600, which can prevent the magnetic blow from being too small to be accurately detected. Increasing the deflection of the arc 600 through the Lorentz force allows for more accurate detection of the magnetic blow direction, so that the Lorentz force generated by each excitation device can be used to correct the magnetic blow direction.

[0078] In some embodiments of the present invention, reference is made to Figure 1 It also includes a tilt sensor 300 and a mechanical transmission structure.

[0079] An inclination sensor 300 is mounted on the welding torch 100 and electrically connected to the control device. The inclination sensor 300 is used to detect the tilt angle of the welding torch 100.

[0080] A mechanical transmission structure is provided on the welding torch 100 and electrically connected to the control device. The mechanical transmission structure is used to adjust the tilt angle of the welding torch 100 so that the welding torch 100 is perpendicular to the surface of the workpiece to be welded.

[0081] The tilt sensor 300 can be a gyroscope or other tilt sensor 300. The gyroscope is mounted on the welding torch 100 to detect the tilt angle of the welding torch 100 in real time and transmit the data to the control device. After determining that the welding torch 100 is not perpendicular to the surface of the workpiece to be welded based on the tilt angle, the control device controls the mechanical transmission structure to adjust the welding torch 100 to be perpendicular to the surface of the workpiece to be welded. If the welding torch 100 is not perpendicular to the surface of the workpiece to be welded, the subsequent deviation of the arc 600 controlled by the magnetic field will result in inconsistent displacement distances of the arc 600 in each direction, making it impossible to determine whether the arc 600 is aligned. By controlling and adjusting the tilt angle of the welding torch 100 to keep it perpendicular to the surface of the workpiece to be welded, it is possible to ensure that multiple temperature sensors 500 can accurately collect temperature information at the corresponding magnetic core 400, thereby ensuring the accuracy of the magnetic deflection direction detection and improving the effect of using the Lorentz force generated by each excitation device to correct the magnetic deflection direction.

[0082] It should be noted that the specific structure of the mechanical transmission structure can be selected according to actual needs, as long as the tilt angle of the welding torch 100 can be adjusted to make the welding torch 100 perpendicular to the surface of the workpiece to be welded. This should not be regarded as a limitation of the present invention.

[0083] In some embodiments of the present invention, reference is made to Figure 1 The excitation device consists of two pairs, each pair including two magnetic cores 400. The distance between two adjacent magnetic cores 400 is equal. The side of the four magnetic cores 400 closest to the electric arc 600 extends beyond the emission point of the electric arc 600. The side of the four magnetic cores 400 furthest from the electric arc 600 is wound with a magnetic coil 401.

[0084] The two pairs of excitation devices represent the minimum number of excitation devices that can generate a rotating magnetic field. This not only controls the cost but also ensures that a rotating magnetic field can be generated, causing the arc 600 to rotate one revolution as the rotating magnetic field changes. The Lorentz force increases the deflection of the arc 600 and can also be used to correct the magnetic blow direction by generating the Lorentz force from each excitation device.

[0085] It should be noted that the specific number of excitation devices is not limited here, as long as there are 2N devices, where N is a natural number greater than 1.

[0086] The following will combine Figures 1 to 6 The control method of the magnetic deflection correction welding device according to the embodiments of the present invention will be clearly and completely described. Obviously, the embodiments described below are some embodiments of the present invention, not all embodiments.

[0087] The control method of the magnetic deflection correction welding apparatus according to a second aspect embodiment of the present invention is applied to the control apparatus of the first aspect embodiment. The control method of the magnetic deflection correction welding apparatus includes the following steps:

[0088] Obtain multiple first temperature information corresponding to 400 locations on multiple magnetic cores;

[0089] When the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, the excitation current of multiple pairs of excitation devices is controlled to generate a rotating magnetic field, so that the electric arc 600 rotates once with the change of the rotating magnetic field, and the deflection of the electric arc 600 is increased by the action of Lorentz force. The maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold, which indicates that magnetic deflection occurs.

[0090] Determine multiple second temperature information corresponding one-to-one at 400 of multiple magnetic cores under the action of a rotating magnetic field;

[0091] The direction of magnetic deflection is determined based on multiple second temperature information.

[0092] The Lorentz force generated by each excitation device is used to correct the direction of magnetic deflection, and multiple third temperature information corresponding to 400 points of multiple magnetic cores is determined until the maximum temperature difference between multiple third temperature information is less than the preset temperature difference threshold.

[0093] like Figure 2 As shown, Figure 2 This is a schematic diagram of the position of an electric arc without magnetic blowout according to an embodiment of the present invention. The distances between the multiple temperature sensors 500 and the emission point of the electric arc 600 are all the same. When the electric arc 600 does not shift, the maximum temperature difference between the multiple first temperature information detected by the multiple temperature sensors 500 is less than a preset temperature difference threshold.

[0094] like Figure 3 As shown, Figure 3 This is a schematic diagram of the arc position during magnetic blowout according to an embodiment of the present invention. If the maximum temperature difference between the multiple first temperature information detected by multiple temperature sensors 500 is greater than or equal to a preset temperature difference threshold, it indicates that the distance between the arc 600 and each temperature sensor 500 differs too much, and it is determined that the arc 600 has shifted.

[0095] like Figure 4 As shown, Figure 4 This is a schematic diagram of the rotation of an electric arc 600 under the action of a rotating magnetic field according to an embodiment of the present invention. Figure 4 (a), (b), (c), and (d) in the diagram represent the four middle positions of the arc 600 during one rotation under the influence of the rotating magnetic field. By passing excitation currents of the same magnitude but opposite directions to the two magnetic cores 400 in a pair of excitation devices, a pair of opposite magnetic poles can be formed, thereby generating an external magnetic field that causes the arc 600 to deflect. By sequentially passing excitation currents of the same magnitude but opposite directions to the two magnetic coils 401 in a pair of excitation devices in a counterclockwise or clockwise direction, a rotating magnetic field can be generated, causing the arc 600 to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of deflection of the arc 600 through the Lorentz force. Figure 3 and Figure 4 It can be seen that after the electric arc 600 rotates once with the change of the rotating magnetic field, the degree of deflection of the electric arc 600 increases. This can avoid the situation where the magnetic blow is too small to be accurately detected. By increasing the degree of deflection of the electric arc 600 through the action of the Lorentz force, the magnetic blow direction of the electric arc 600 can be detected more accurately. It can also facilitate the use of various excitation devices to generate Lorentz force to correct the magnetic blow direction, resulting in a better correction effect for the magnetic blow direction.

[0096] Each temperature sensor 500 corresponds to a spatial coordinate. After multiple temperature sensors 500 detect the second temperature information at the corresponding magnetic core 400, they transmit it to the control device. The control device generates a three-dimensional temperature distribution on a spatial surface with the tungsten electrode of the welding torch 100 as the central axis and the distance from the central axis to the temperature sensor 500 as the radius. The magnetic blow direction is calculated based on the second temperature information at each spatial location. By comparing the temperatures in various directions of the arc 600, it is determined whether magnetic blow has occurred in the arc 600. The device is simple and the detection cost is low.

[0097] It should be noted that the method of calculating the magnetic deflection direction using second temperature information from different spatial locations is a prior art known to those skilled in the art, and the specific modeling and calculation methods will not be described in detail here.

[0098] When using the Lorentz force generated by each excitation device to correct the magnetic blow direction, the excitation devices no longer receive excitation currents of the same magnitude but opposite directions in pairs. Instead, two or more of the excitation currents can be selected based on the magnetic blow direction of the arc 600. The magnitude and direction of the excitation current supplied to each excitation device need to be determined according to the magnetic blow direction of the arc 600. Figure 5 For example, Figure 5 This is a schematic diagram of a method for correcting magnetic blowout according to an embodiment of the present invention. Figure 5 The upper and lower excitation devices are supplied with excitation currents of the same magnitude and direction, making the magnetic pole the S pole. The right excitation device is supplied with an excitation current of the same magnitude but opposite direction to the upper and lower excitation devices, making the magnetic pole the N pole. This generates Lorentz forces in two directions, pushing the electric arc 600 to the center point.

[0099] It should be noted that the principle and process of using various excitation devices to generate Lorentz force to correct the direction of magnetic blow are existing technologies known to those skilled in the art, and will not be explained in detail here.

[0100] According to the control method of the magnetic blow correction welding device of the present invention, the temperature information at the corresponding magnetic core 400 can be detected by multiple temperature sensors 500. Since the multiple temperature sensors 500 are at the same distance from the emission point of the electric arc 600, if the electric arc 600 does not experience magnetic blow, the maximum temperature difference between the multiple first temperature information is less than a preset temperature difference threshold. If the maximum temperature difference between the multiple first temperature information is detected to be greater than or equal to the preset temperature difference threshold, it is determined that the electric arc 600 has experienced magnetic blow. The determination of whether the electric arc 600 has experienced magnetic blow is made by comparing the temperature in each direction of the electric arc 600. The device is simple and the detection cost is low. By supplying excitation current to multiple pairs of excitation devices, a rotating magnetic field can be formed, causing the arc 600 to rotate one revolution as the rotating magnetic field changes. The Lorentz force increases the deflection of the arc 600, which can prevent the magnetic blow from being too small to be accurately detected. Increasing the deflection of the arc 600 through the Lorentz force allows for more accurate detection of the magnetic blow direction, so that the Lorentz force generated by each excitation device can be used to correct the magnetic blow direction.

[0101] In some embodiments of the present invention, reference is made to Figures 2 to 4 When the maximum temperature difference between multiple first temperature information points is greater than or equal to a preset temperature difference threshold, the excitation current of multiple pairs of excitation devices is controlled to generate a rotating magnetic field, causing the electric arc 600 to rotate one revolution with the change of the rotating magnetic field, and increasing the deflection of the electric arc 600 through the action of the Lorentz force. The maximum temperature difference between multiple first temperature information points being greater than or equal to the preset temperature difference threshold indicates that magnetic blow has occurred. The process includes the following steps:

[0102] Determine the highest and lowest temperatures among multiple sets of initial temperature information;

[0103] If the difference between the highest and lowest temperatures is greater than or equal to the preset temperature difference threshold, the excitation current of multiple pairs of excitation devices is controlled to generate a rotating magnetic field, causing the arc 600 to rotate one revolution with the change of the rotating magnetic field, and the deflection of the arc 600 is increased by the action of the Lorentz force. The difference between the highest and lowest temperatures being greater than or equal to the preset temperature difference threshold indicates that magnetic deflection has occurred.

[0104] like Figure 2 As shown, Figure 2 This is a schematic diagram of the position of an electric arc without magnetic blowout according to an embodiment of the present invention. The distances between the multiple temperature sensors 500 and the emission point of the electric arc 600 are all the same. When the electric arc 600 does not shift, the difference between the highest and lowest temperatures among the multiple first temperature information detected by the multiple temperature sensors 500 is less than a preset temperature difference threshold.

[0105] like Figure 3 As shown, Figure 3This is a schematic diagram of the arc position during magnetic blowout according to an embodiment of the present invention. If the difference between the highest and lowest temperatures among the multiple first temperature information detected by multiple temperature sensors 500 is greater than or equal to a preset temperature difference threshold, it indicates that the distance between the arc 600 and each temperature sensor 500 differs too much, and it is determined that the arc 600 has shifted.

[0106] like Figure 4 As shown, Figure 4 This is a schematic diagram of the rotation of an electric arc 600 under the action of a rotating magnetic field according to an embodiment of the present invention. Figure 4 (a), (b), (c), and (d) in the diagram represent the four middle positions of the arc 600 during one rotation under the influence of the rotating magnetic field. By passing excitation currents of the same magnitude but opposite directions to the two magnetic cores 400 in a pair of excitation devices, a pair of opposite magnetic poles can be formed, thereby generating an external magnetic field that causes the arc 600 to deflect. By sequentially passing excitation currents of the same magnitude but opposite directions to the two magnetic coils 401 in a pair of excitation devices in a counterclockwise or clockwise direction, a rotating magnetic field can be generated, causing the arc 600 to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of deflection of the arc 600 through the Lorentz force. Figure 3 and Figure 4 It can be seen that after the electric arc 600 rotates once with the change of the rotating magnetic field, the degree of deflection of the electric arc 600 increases. This can avoid the situation where the magnetic blow is too small to be accurately detected. By increasing the degree of deflection of the electric arc 600 through the action of the Lorentz force, the magnetic blow direction of the electric arc 600 can be detected more accurately. It can also facilitate the use of various excitation devices to generate Lorentz force to correct the magnetic blow direction, resulting in a better correction effect for the magnetic blow direction.

[0107] In some embodiments of the present invention, reference is made to Figures 2 to 4 The process involves controlling the supply of excitation current to multiple pairs of excitation devices to generate a rotating magnetic field. This causes the electric arc 600 to rotate one revolution as the rotating magnetic field changes, and the Lorentz force is used to increase the deflection of the electric arc 600. The steps include:

[0108] In a counterclockwise or clockwise direction, excitation currents of the same magnitude but opposite directions are sequentially passed through the two magnetic coils 401 in a pair of excitation devices until a rotating magnetic field is generated, causing the arc 600 to rotate one revolution as the rotating magnetic field changes, and increasing the degree of deflection of the arc 600 through the action of the Lorentz force.

[0109] like Figure 4 As shown, Figure 4 This is a schematic diagram of the rotation of an electric arc 600 under the action of a rotating magnetic field according to an embodiment of the present invention. Figure 4(a), (b), (c), and (d) in the diagram represent the four middle positions of the arc 600 during one rotation under the influence of the rotating magnetic field. By passing excitation currents of the same magnitude but opposite direction to the two magnetic cores 400 in the pair of excitation devices, a pair of opposite magnetic poles can be formed, thereby generating an external magnetic field that causes the arc 600 to deflect. By sequentially passing excitation currents of the same magnitude but opposite direction to the two magnetic coils 401 in the pair of excitation devices in a counterclockwise or clockwise direction, a rotating magnetic field can be generated, causing the arc 600 to rotate one revolution as the rotating magnetic field changes, and increasing the degree of deflection of the arc 600 through the Lorentz force.

[0110] It should be noted that the specific method for generating the rotating magnetic field is existing technology known to those skilled in the art, and will not be elaborated here.

[0111] In some embodiments of the present invention, reference is made to Figure 1 The magnetic deflection correction welding device also includes an angle sensor 300 and a mechanical transmission structure; the control method of the magnetic deflection correction welding device further includes the following steps:

[0112] Obtain the tilt angle of the welding torch 100 detected by the tilt sensor 300;

[0113] Adjust the welding torch by 100 degrees to be perpendicular to the surface of the workpiece to be welded, according to the tilt angle control mechanical transmission structure.

[0114] If the welding torch 100 is not perpendicular to the surface of the workpiece to be welded, the subsequent deviation of the arc 600 controlled by the magnetic field will result in inconsistent displacement distances of the arc 600 in each direction, making it impossible to determine whether the arc 600 is aligned. By controlling and adjusting the tilt angle of the welding torch 100 to keep it perpendicular to the surface of the workpiece, it is possible to ensure that multiple temperature sensors 500 can accurately collect temperature information at the corresponding magnetic core 400, thereby ensuring the accuracy of magnetic deflection direction detection and improving the effectiveness of using the Lorentz force generated by each excitation device to correct the magnetic deflection direction.

[0115] According to a third aspect embodiment of the present invention, the control system of the magnetic deflection correction welding apparatus is applied to the control device of the first aspect embodiment. The control system of the magnetic deflection correction welding apparatus includes a first temperature information acquisition unit, a rotating magnetic field generation unit, a second temperature information determination unit, a magnetic deflection direction determination unit, and a magnetic deflection correction unit.

[0116] The first temperature information acquisition unit is used to acquire multiple first temperature information corresponding to 400 locations of multiple magnetic cores;

[0117] The rotating magnetic field generating unit is used to control the introduction of excitation currents into multiple pairs of excitation devices when the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc 600 to rotate one revolution with the change of the rotating magnetic field, and increasing the deflection degree of the electric arc 600 through the action of Lorentz force. The maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold, which indicates that magnetic deflection occurs.

[0118] The second temperature information determination unit is used to determine multiple second temperature information corresponding to multiple magnetic cores 400 under the action of the rotating magnetic field.

[0119] A magnetic deflection direction determination unit is used to determine the magnetic deflection direction based on multiple second temperature information.

[0120] The magnetic deflection correction unit is used to generate Lorentz force using various excitation devices to correct the direction of magnetic deflection and to determine multiple third temperature information corresponding to multiple magnetic cores 400, until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

[0121] The control system of the magnetic deflection correction welding device adopts all the technical solutions of the magnetic deflection correction welding device described in the above embodiments, and will not be repeated here. Furthermore, since the control system of the magnetic deflection correction welding device adopts all the technical solutions of the magnetic deflection correction welding device described in the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0122] Furthermore, a fourth aspect of the present invention provides a control device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor and the memory may be connected via a bus or other means.

[0123] Memory, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. Furthermore, memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some embodiments, memory may optionally include memory remotely located relative to the processor, and these remote memories can be connected to the processor via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0124] The non-transient software program and instructions required to implement the control method of the magnetic deflection correction welding device in the above embodiments are stored in the memory. When executed by the processor, the control method of the magnetic deflection correction welding device in the above embodiments is executed.

[0125] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0126] Furthermore, embodiments of the fifth aspect of the present invention also provide a computer-readable storage medium storing computer-executable instructions that are executed by a processor or controller, for example, by a processor of the aforementioned control device, such that the processor performs the control method of the magnetic deflection correction welding apparatus in the above embodiments.

[0127] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0128] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A magnetic deflection correction welding device, characterized in that, include: A welding device having a welding torch, wherein a fixing element is fitted on the side of the welding torch for emitting an electric arc; Multiple pairs of excitation devices are mounted on the fixing member. Each pair of excitation devices includes two magnetic cores. The distance between two adjacent magnetic cores is equal. The side of each magnetic core near the electric arc extends beyond the emission point of the electric arc. A magnetic coil is wound around the side of each magnetic core away from the electric arc. Multiple temperature sensors are disposed one-to-one on the side of the multiple magnetic cores near the electric arc, and each temperature sensor is equidistant from the emission point of the electric arc. The temperature sensors are used to detect the temperature information at the corresponding magnetic core. A control device, electrically connected to multiple pairs of excitation devices, is used to control the supply of excitation current to multiple pairs of excitation devices after detecting that the maximum temperature difference between multiple first temperature information corresponding to multiple magnetic cores is greater than or equal to a preset temperature difference threshold. This causes the multiple pairs of excitation devices to generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field. The degree of arc deflection is increased by the Lorentz force. The magnetic deflection direction is determined based on multiple second temperature information corresponding to multiple magnetic cores detected under the action of the rotating magnetic field. The magnetic deflection direction is corrected by the Lorentz force generated by each excitation device. Multiple third temperature information corresponding to multiple magnetic cores is determined until the maximum temperature difference between multiple third temperature information is less than the preset temperature difference threshold.

2. The magnetic deflection correction welding device according to claim 1, characterized in that, Also includes: An inclination sensor is mounted on the welding torch and electrically connected to the control device. The inclination sensor is used to detect the tilt angle of the welding torch. A mechanical transmission structure is provided on the welding torch and electrically connected to the control device. The mechanical transmission structure is used to adjust the tilt angle of the welding torch so that the welding torch is perpendicular to the surface of the workpiece to be welded.

3. The magnetic deflection correction welding device according to claim 1, characterized in that, The excitation device consists of two pairs, each pair including two magnetic cores. The distance between two adjacent magnetic cores is equal. The side of the four magnetic cores closest to the electric arc extends beyond the emission point of the electric arc, and the side of the four magnetic cores furthest from the electric arc is wound with a magnetic coil.

4. A control method for a magnetic deflection correction welding device, characterized in that, The magnetic deflection correction welding apparatus as described in any one of claims 1 to 3, wherein the control method of the magnetic deflection correction welding apparatus comprises the following steps: Obtain multiple first temperature information corresponding to each of the multiple magnetic cores; When the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, multiple pairs of excitation currents are controlled to be supplied to the excitation devices so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of electric arc deflection through the action of Lorentz force. Wherein, the maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs. Determine multiple second temperature information corresponding one-to-one at multiple magnetic cores under the action of the rotating magnetic field; The magnetic deflection direction is determined based on multiple pieces of the second temperature information; The direction of magnetic deflection is corrected by generating Lorentz force using each of the excitation devices, and multiple third temperature information corresponding to each of the multiple magnetic cores is determined until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

5. The control method of the magnetic deflection correction welding device according to claim 4, characterized in that, When the maximum temperature difference between multiple first temperature information values ​​is greater than or equal to a preset temperature difference threshold, the excitation current of multiple pairs of excitation devices is controlled to generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the deflection of the electric arc through the Lorentz force. The maximum temperature difference between multiple first temperature information values ​​being greater than or equal to the preset temperature difference threshold indicates that magnetic blow has occurred. This includes the following steps: Determine the highest and lowest temperatures among multiple sets of the first temperature information; If the difference between the highest temperature and the lowest temperature is greater than or equal to the preset temperature difference threshold, multiple pairs of excitation currents are controlled to be supplied to the excitation devices so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of arc deflection through the action of Lorentz force. The difference between the highest temperature and the lowest temperature being greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs.

6. The control method of the magnetic deflection correction welding device according to claim 4 or 5, characterized in that, The control involves supplying excitation current to multiple pairs of excitation devices to generate a rotating magnetic field, causing the electric arc to rotate one revolution as the rotating magnetic field changes, and increasing the arc's deflection through the Lorentz force. This includes the following steps: In a counterclockwise or clockwise direction, excitation currents of the same magnitude but opposite directions are sequentially passed through the two magnetic coils in the pair of excitation devices until a rotating magnetic field is generated. This causes the electric arc to rotate one revolution as the rotating magnetic field changes, and the degree of arc deflection is increased by the Lorentz force.

7. The control method of the magnetic deflection correction welding device according to claim 4, characterized in that, The magnetic deflection correction welding device further includes an angle sensor and a mechanical transmission structure; the control method of the magnetic deflection correction welding device further includes the following steps: Obtain the tilt angle of the welding torch detected by the tilt sensor; The mechanical transmission structure is controlled according to the tilt angle to adjust the welding torch so that it is perpendicular to the surface of the workpiece to be welded.

8. A control system for a magnetic deflection correction welding device, characterized in that, The magnetic deflection correction welding apparatus as described in any one of claims 1 to 3, wherein the control system of the magnetic deflection correction welding apparatus comprises: The first temperature information acquisition unit is used to acquire multiple first temperature information corresponding to each of the multiple magnetic cores; A rotating magnetic field generating unit is used to control the introduction of excitation currents into multiple pairs of excitation devices when the maximum temperature difference between multiple first temperature information is greater than or equal to a preset temperature difference threshold, so that multiple pairs of excitation devices generate a rotating magnetic field, causing the electric arc to rotate one revolution with the change of the rotating magnetic field, and increasing the degree of electric arc deflection through the action of Lorentz force, wherein the maximum temperature difference between multiple first temperature information is greater than or equal to the preset temperature difference threshold indicates that magnetic blow occurs. The second temperature information determination unit is used to determine multiple second temperature information corresponding one-to-one at multiple magnetic cores under the action of the rotating magnetic field. A magnetic deflection direction determination unit is used to determine the magnetic deflection direction based on multiple pieces of the second temperature information; The magnetic deflection correction unit is used to generate Lorentz force using each of the excitation devices to correct the magnetic deflection direction and to determine multiple third temperature information corresponding to multiple magnetic cores, until the maximum temperature difference between the multiple third temperature information is less than the preset temperature difference threshold.

9. A control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the control method of the magnetic deflection correction welding apparatus as described in any one of claims 4 to 7.

10. A computer-readable storage medium storing computer-executable instructions, characterized in that, The computer-executable instructions are used to execute the control method of the magnetic deflection correction welding apparatus as described in any one of claims 4 to 7.

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