Welding method

Abstract

The invention relates to the technical field of welding, in particular to a welding method. The welding method comprises the steps that information of the to-be-welded part is recognized; matching a preset operation mode in a control system according to the information of the to-be-welded part; and if the control system is not matched with the information of the to-be-welded part, the welding equipment is controlled to execute a first operation mode, in the first operation mode, the control system automatically generates a first temperature change curve, and a parameter input module is configured to manually input welding parameters according to the first temperature change curve, the welding parameters comprise at least one of welding temperature, welding power, welding time and cooling water flow; and the control system controls the welding equipment to execute a control instruction according to the welding parameters in the first operation mode. According to the welding method, the welding parameter adjusting process of welding equipment is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding method. Background Art

[0002] In the field of nuclear measurement detectors, it is often necessary to weld workpieces for nuclear reactor detectors (hereinafter referred to as "workpieces to be welded") to assemble detectors or to ensure the sealing of workpieces through welding. With the development of welding technology, the automatic welding of workpieces to be welded has been gradually realized. During the process of automatic welding, it is necessary to use a clamping assembly to clamp the workpiece to be welded, and then align the welding assembly with the welding position of the workpiece to be welded. The control system can control the welding assembly to weld the workpiece to be welded.

[0003] However, due to the existence of various different types of workpieces to be welded, when the type of the workpiece to be welded changes, it is necessary to correspondingly adjust the welding temperature of the welding assembly for the workpiece to be welded. The process of adjusting welding parameters of existing welding equipment is relatively cumbersome, increasing the complexity of operation and time cost. Summary of the Invention

[0004] The main object of the present invention is to propose a welding method, aiming to solve the technical problem that the process of adjusting welding parameters of existing welding equipment is relatively cumbersome, increasing the complexity of operation and time cost.

[0005] To achieve the above object, the present invention proposes a welding method for a welding equipment to weld a workpiece to be welded. The welding method includes:

[0006] Identifying the information of the workpiece to be welded;

[0007] Matching a preset operation mode in the control system according to the information of the workpiece to be welded;

[0008] If the control system fails to match the information of the workpiece to be welded, the control system controls the welding equipment to execute a first operation mode. In the first operation mode, the control system automatically generates a first temperature change curve, and a parameter input module is configured to manually input welding parameters according to the first temperature change curve. The welding parameters include at least one of welding temperature, welding power, welding time, and cooling water flow rate; the control system controls the welding equipment to execute a control instruction according to the welding parameters in the first operation mode.

[0009] Wherein, at least one of the actual welding temperature and the actual welding power can be obtained in real time according to the first temperature change curve. Based on the comparison between the actual welding temperature and the preset welding temperature, and / or based on the comparison between the actual welding power and the preset welding power, the parameter input module is configured to manually change the welding parameters, and the control system controls the welding equipment to execute a control instruction according to the changed welding parameters.

[0010] In some embodiments, if the actual welding temperature is lower than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to increase the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to reduce the cooling water flow rate;

[0011] If the actual welding temperature is higher than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to lower the welding temperature, and / or the parameter input module is configured to manually change the welding power to decrease the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

[0012] In some embodiments, if the actual welding power is lower than the preset welding power, the parameter input module is configured to manually change the welding temperature to increase the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to reduce the cooling water flow rate;

[0013] If the actual welding power is higher than the preset welding power, the parameter input module is configured to manually change the welding temperature to lower the welding temperature, and / or the parameter input module is configured to manually change the welding power to decrease the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

[0014] In some embodiments, based on the welding parameters manually input by the parameter input module according to the first temperature change curve multiple times, the control system automatically generates a temperature change trend curve;

[0015] If the actual welding temperature reaches within the change threshold of the preset welding temperature, the actual welding power reaches within the change threshold of the preset welding power, and the temperature change trend curve stabilizes within the temperature change threshold of the preset duration, the parameter input module closes the function of manually inputting the welding parameters.

[0016] In some embodiments, based on the temperature change trend curve, the control system generates a target welding plan, and the target welding plan is stored in the control system.

[0017] In some embodiments, in response to an unlocking instruction, the parameter input module activates the function of manually inputting the welding parameters, so that the control system controls the welding equipment to execute the control command according to the reset welding parameters.

[0018] In some embodiments, if the control system matches the information of the workpiece to be welded, it controls the welding equipment to execute the second operation mode. In the second operation mode, a preset parameter set in the parameter input module is selected. The parameter set includes at least one of welding temperature, welding power, welding time, and cooling water flow rate; the control system controls the welding equipment to execute the control instruction according to the parameter set in the second operation mode;

[0019] Wherein, the control system generates a second temperature change curve according to the welding information of the welding equipment in the second operation mode.

[0020] In some embodiments, during the process of the welding equipment welding the workpiece to be welded, the workpiece to be welded is placed in the welding cavity of the protective cover, and the protective cover has a separated state and a buckled state;

[0021] Wherein, in the separated state, the workpiece to be welded is exposed to the protective cover; in the buckled state, the protective cover forms the welding cavity.

[0022] In some embodiments, after the workpiece to be welded is in the welding position, the protective cover is switched from the separated state to the buckled state to enclose the workpiece to be welded in the welding cavity;

[0023] After the workpiece to be welded is welded or when it is detected that the actual welding temperature is higher than the preset welding temperature, the protective cover is switched from the buckled state to the separated state to expose the workpiece to be welded to the protective cover.

[0024] In some embodiments, after the workpiece to be welded is welded, or before the workpiece to be welded is welded, the information of the workpiece to be welded is re-identified, and the operation mode preset in the control system is re-matched according to the information of the workpiece to be welded.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] In the technical solution of the present invention, when welding a new type of workpiece to be welded, the control system controls the welding equipment to execute the first operation mode. In the first operation mode, the control system first automatically generates a first temperature change curve according to the model, size, etc. of the workpiece to be welded. Based on the first temperature change curve, the operator can change the welding parameters through the parameter input module to achieve fine-tuning of the welding parameters. During the welding process of the workpiece to be welded, according to the deviation between the actual welding temperature and the preset welding temperature, or according to the deviation between the actual welding power and the preset welding power, the operator can change the welding parameters in real time to ensure that the workpiece to be welded is in a suitable welding environment.

[0027] Through the combination of man and machine, on the one hand, according to the automatically generated first temperature change curve, the adjustment process of welding parameters can be simplified, fine-tuning of welding parameters can be achieved, the adjustment difficulty of welding parameters can be reduced, and the time cost of adjusting welding parameters can be saved; on the other hand, based on the first temperature change curve, the welding parameters are adjusted in real time, which can not only prevent the welding temperature of the welding equipment from being too low, resulting in low welding efficiency or poor welding strength, but also prevent the welding temperature of the welding equipment from being too high, resulting in the welding equipment burning the workpiece to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0029] Figure 1 It is a schematic flow chart of the welding method provided by an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the overall structure of the welding equipment provided by an embodiment of the present invention;

[0031] Figure 3 For Figure 2 The partial enlarged view at A in

[0032] Figure 4 It is a schematic diagram of the structure of the workpiece to be welded in the welding equipment provided by an embodiment of the present invention before welding;

[0033] Figure 5 It is a schematic diagram of the structure of the workpiece to be welded in the welding equipment provided by an embodiment of the present invention during welding;

[0034] Figure 6 It is a schematic diagram of the structure of the clamping part in the welding equipment provided by an embodiment of the present invention;

[0035] Figure 7 The structural cross-sectional view of the clamping part in the welding equipment provided by an embodiment of the present invention.

[0036] Explanation of the reference numerals in the drawings:

[0037] 10. Welding equipment;

[0038] 100. Clamping part;

[0039] 110. Clamping groove; 120. Liquid cooling channel;

[0040] 200. Induction heating coil;

[0041] 300. Control system;

[0042] 400. Temperature detection component;

[0043] 500. Protective cover;

[0044] 510. First cover body; 520. Second cover body;

[0045] 600. Workpiece to be welded.

[0046] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0049] In addition, if descriptions such as "first", "second", etc. are involved in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or", "or / and", or "and / or" appear throughout the text, their meanings include three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0050] In the field of nuclear measurement detectors, it is often necessary to weld workpieces for nuclear reactor detectors (hereinafter referred to as "workpieces to be welded") to assemble detectors or to ensure the sealing of workpieces through welding. With the development of welding technology, the automatic welding of workpieces to be welded has been gradually realized. During the process of automatic welding, it is necessary to use a clamping assembly to clamp the workpiece to be welded, and then align the welding assembly with the welding position of the workpiece to be welded. The welding assembly can be controlled to weld the workpiece to be welded through a control system.

[0051] However, since there are various different types of workpieces to be welded, when the type of the workpiece to be welded changes, it is necessary to correspondingly adjust the welding temperature of the welding assembly for the workpiece to be welded. The process of adjusting welding parameters of existing welding equipment is relatively cumbersome, increasing the complexity of operation and time cost.

[0052] Based on this, in order to solve the technical problem that the process of adjusting welding parameters of existing welding equipment 10 is relatively cumbersome, increasing the complexity of operation and time cost, referring to Figure 1 , an embodiment of the present invention provides a welding method for welding equipment 10 to weld a workpiece to be welded 600. The welding method includes:

[0053] First, identify the information of the workpiece to be welded 600. Then, match the preset operation mode in the control system 300 according to the information of the workpiece to be welded 600. If the control system 300 fails to match the information of the workpiece to be welded 600, the control system 300 controls the welding device 10 to execute the first operation mode. In the first operation mode, the control system 300 automatically generates a first temperature change curve. The parameter input module is configured to manually input welding parameters according to the first temperature change curve. The welding parameters include at least one of welding temperature, welding power, welding time, and cooling water flow rate. The control system 300 controls the welding device 10 to execute the control instruction according to the welding parameters in the first operation mode. Among them, at least one of the actual welding temperature and the actual welding power can be obtained in real time according to the first temperature change curve. Based on the comparison between the actual welding temperature and the preset welding temperature, and / or based on the comparison between the actual welding power and the preset welding power, the parameter input module is configured to manually change the welding parameters, and the control system 300 controls the welding device 10 to execute the control instruction according to the changed welding parameters.

[0054] Specifically, in this embodiment, when welding a new type of workpiece to be welded 600, the control system 300 controls the welding device 10 to execute the first operation mode. In the first operation mode, the control system 300 first automatically generates a first temperature change curve according to the model, size, etc. of the workpiece to be welded 600. Based on the first temperature change curve, the operator can change the welding parameters through the parameter input module to achieve fine-tuning of the welding parameters. During the welding of the workpiece to be welded 600, according to the deviation between the actual welding temperature and the preset welding temperature, or according to the deviation between the actual welding power and the preset welding power, the operator can change the welding parameters in real time to ensure that the workpiece to be welded 600 is in a suitable welding environment.

[0055] Through the combination of man and machine, on the one hand, according to the automatically generated first temperature change curve, the adjustment process of welding parameters can be simplified, fine-tuning of welding parameters can be achieved, the adjustment difficulty of welding parameters can be reduced, and the time cost of adjusting welding parameters can be saved. On the other hand, based on the first temperature change curve, the welding parameters are adjusted in real time, which can not only prevent the welding temperature of the welding device 10 from being too low, resulting in low welding efficiency or poor welding strength, but also prevent the welding temperature of the welding device 10 from being too high, resulting in the welding device 10 burning the workpiece to be welded 600.

[0056] In some embodiments, if the actual welding temperature is lower than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to increase the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to reduce the cooling water flow rate.

[0057] If the actual welding temperature is higher than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to lower the welding temperature, and / or the parameter input module is configured to manually change the welding power to reduce the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

[0058] Similarly, if the actual welding power is lower than the preset welding power, the parameter input module is configured to manually change the welding temperature to raise the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to decrease the cooling water flow rate.

[0059] If the actual welding power is higher than the preset welding power, the parameter input module is configured to manually change the welding temperature to lower the welding temperature, and / or the parameter input module is configured to manually change the welding power to reduce the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

[0060] Specifically, in this embodiment, when the actual welding temperature is lower than the preset welding temperature, or the actual welding power is lower than the preset welding power, that is, when the actual welding temperature or the actual welding power does not meet the welding conditions of the workpiece to be welded 600, the above-mentioned adjustment method of increasing the welding energy is beneficial to ensuring the welding effect of the welding device 10 on the workpiece to be welded 600, improving the welding quality of the welding device 10 on the workpiece to be welded 600, and preventing the welding efficiency of the workpiece to be welded 600 from being low due to insufficient welding energy and not meeting the welding strength requirements. When the actual welding temperature is higher than the preset welding temperature, or the actual welding power is higher than the preset welding power, that is, when the actual welding temperature or the actual welding power exceeds the welding conditions of the workpiece to be welded 600, the above-mentioned adjustment method of reducing the welding energy is beneficial to protecting the structural stability and safety of the workpiece to be welded 600 and preventing the workpiece to be welded 600 from being burned due to excessive welding energy.

[0061] In some embodiments, based on the welding parameters manually input by the parameter input module according to the first temperature change curve multiple times, the control system 300 automatically generates a temperature change trend curve. If the actual welding temperature reaches within the change threshold of the preset welding temperature, the actual welding power reaches within the change threshold of the preset welding power, and the temperature change trend curve stabilizes within the temperature change threshold of the preset duration, the parameter input module closes the function of manually inputting welding parameters.

[0062] Specifically, in this embodiment, when the control system 300 monitors that the actual welding temperature is within the change threshold of the preset welding temperature, the actual welding power is also within the change threshold of the preset welding power, and the temperature change trend curve remains stable within the preset temperature change threshold within a preset duration, the parameter input module will automatically turn off the function of manually inputting welding parameters. In other words, at this time, the control system 300 has been optimized according to the dynamic conditions of the actual welding process and reached a stable operation state, thereby improving the automation and stability of the welding process. By turning off the function of manually inputting welding parameters, it is possible to prevent the operator from accidentally touching the parameter input module to ensure that the welding device 10 welds the workpiece to be welded 600 normally and continuously.

[0063] After the operator manually inputs the welding parameters for the first time, the control system 300 generates a temperature change trend curve to monitor the changes in the welding process. By comparing the actual welding parameters with the preset stable threshold, the control system 300 can determine whether the welding process has entered a stable automation stage. When all conditions are met, the parameter input module will automatically switch to the automatic control mode, no longer requiring manual intervention, while continuously monitoring to ensure the stability of the welding process and achieving batch welding of the workpiece to be welded 600.

[0064] In some embodiments, based on the temperature change trend curve, the control system 300 generates a target welding plan, and the target welding plan is stored in the control system 300. When the control system 300 identifies the same type of workpiece to be welded 600, the control system 300 can directly match and call the corresponding welding plan, so that the operator does not need to adjust the welding parameters one by one, thereby optimizing the welding process, simplifying the welding process, and ensuring the welding quality and welding stability of the welding device 10 for the same type of workpiece to be welded 600, which is conducive to realizing batch welding of the workpiece to be welded 600.

[0065] In some embodiments, in response to the unlocking instruction, the parameter input module activates the function of manually inputting welding parameters, so that the control system 300 controls the welding device 10 to execute the control command according to the re-set welding parameters.

[0066] Specifically, in this embodiment, the temperature change trend curve can reflect the welding condition of the welding device 10 for the workpiece to be welded 600 in real time. When the welding temperature of the welding device 10 fed back by the temperature change trend curve is abnormal, the operator can apply an unlocking instruction to the parameter input module (for example, the operator can apply an unlocking instruction to the parameter input module through the control panel). After the parameter input module receives the unlocking instruction, the parameter input module is activated, allowing the operator to manually input new welding parameters, so that the control system 300 can generate corresponding control commands according to the reset welding parameters, and then control the welding device 10 to perform the welding task according to the new welding parameters, thereby realizing the flexible adjustment and adaptive control of the welding parameters, enhancing the controllability and precision of the welding process, and improving the welding quality and production efficiency.

[0067] The specific process for the control system 300 to control the welding device 10 to re-perform the welding operation is as follows: First, trigger the parameter input mode through the unlocking instruction, and then the operator manually inputs the required welding parameters; Next, the parameter input module transmits the received new welding parameters to the control system 300; Subsequently, the control system 300 generates specific control commands based on the new welding parameters; Finally, the control commands are sent to the welding device 10 to make it perform the welding operation according to the new welding parameters.

[0068] In some embodiments, if the control system 300 matches the information of the workpiece to be welded 600, it controls the welding device 10 to execute the second operation mode. In the second operation mode, a preset parameter set in the parameter input module is selected. The parameter set includes at least one of welding temperature, welding power, welding time, and cooling water flow rate. The control system 300 controls the welding device 10 to execute the control instruction according to the parameter set in the second operation mode. Among them, the control system 300 generates a second temperature change curve according to the welding information of the welding device 10 in the second operation mode.

[0069] Specifically, in this embodiment, for different types of workpieces to be welded 600, corresponding welding schemes are stored in the control system 300. When the control system 300 matches the welding scheme for the workpiece to be welded 600, it will automatically control the welding device 10 to enter the welding mode (i.e., the second operation mode), so that the welding device 10 welds the workpiece to be welded 600 according to the preset welding scheme. In this operation mode, the control system 300 will select appropriate welding temperature, welding power, welding time, cooling water flow rate, etc. from the pre-set parameter set, and then control the welding device 10 to perform the welding operation according to the selected parameter set. At the same time, the control system 300 will generate a second temperature change curve based on the actual welding effect of the welding device 10 in the second operation mode. The second temperature change curve can reflect the welding temperature of the welding device 10 in real time, which is beneficial for the operator to monitor or trace the welding situation of the welding device 10 in real time to ensure the welding quality of the welding device 10 for the workpiece to be welded 600.

[0070] Referring to Figures 1 to 7 , a specific structure of the welding device 10 is provided. The welding device 10 includes a clamping portion 100, an induction heating coil 200, and a control system 300 (specifically, it can be a PLC control system 300). The clamping portion 100 is provided with a clamping groove 110 for clamping the workpiece to be welded 600. A liquid cooling channel 120 is provided inside the clamping portion 100. The liquid cooling channel 120 is adapted to be connected to a liquid cooling device, and the liquid cooling device is configured to fill the liquid cooling channel 120 with cooling water. The induction heating coil 200 is used to heat and weld the workpiece to be welded 600. The control system 300 is used to control the welding device 10 to execute control instructions. For example, the control instructions may include using the control system 300 to control the induction heating coil 200 to perform the operation of heating and welding the workpiece to be welded 600, or using the control system 300 to control the liquid cooling device to perform the operation of introducing cooling water into the liquid cooling channel 120, etc.

[0071] Based on the above specific structure of the welding device 10, its welding method includes:

[0072] Clamp the workpiece to be welded 600 in the clamping portion 100. Specifically, the workpiece to be welded 600 is clamped in the clamping groove 110 of the clamping portion 100. The structural shape of the clamping groove 110 adapts to the structural shape of the workpiece to be welded 600 to ensure the clamping reliability of the clamping portion 100 for the workpiece to be welded 600. For example, if the workpiece to be welded 600 is a tubular structure, the clamping groove 110 can be a circular structure so that the workpiece to be welded 600 fits the clamping groove 110.

[0073] Specifically, in this step, before welding the workpiece to be welded 600, it is necessary to clamp and position the workpiece to be welded 600 by using the clamping part 100 to ensure that the workpiece to be welded 600 does not shake during the welding process, thereby facilitating the improvement of the welding accuracy and welding quality of the workpiece to be welded 600.

[0074] In some embodiments, before clamping the workpiece to be welded 600 to the clamping part 100, the surface of the workpiece to be welded 600 can be scrubbed by using white silk cloth, dust-free paper and anhydrous alcohol to keep the workpiece to be welded 600 clean before welding and avoid the stains on the surface of the workpiece to be welded 600 from affecting the welding quality of the workpiece to be welded 600.

[0075] Move the induction heating coil 200 to the welding position of the workpiece to be welded 600. For example, the induction heating coil 200 can be driven by a driving motor or a driving cylinder, so that the induction heating coil 200 can move in a direction close to or away from the workpiece to be welded 600, enabling the induction heating coil 200 to accurately move to the welding position of the workpiece to be welded 600 and improving the welding quality and welding accuracy of the induction heating coil 200 for the workpiece to be welded 600.

[0076] Specifically, in this step, after the workpiece to be welded 600 is clamped and positioned by the clamping part 100, it is necessary to align the induction heating coil 200 with the welding position of the workpiece to be welded 600. The induction heating coil 200 can include a first enclosing part and a second enclosing part, and the first enclosing part and the second enclosing part can be hinged together so that there are a locked state and an unlocked state between the first enclosing part and the second enclosing part. In the locked state, the first enclosing part and the second enclosing part are combined together by a locking member (for example, the locking member can be a locking bolt). At this time, the workpiece to be welded 600 is located between the first enclosing part and the second enclosing part, and the eddy current loop formed between the first enclosing part and the second enclosing part can heat and weld the workpiece to be welded 600. In the unlocked state, the first enclosing part can move away from the second enclosing part to open the first enclosing part and the second enclosing part, so as to facilitate the movement of the workpiece to be welded 600 into or out of the space between the first enclosing part and the second enclosing part.

[0077] The control system 300 controls the induction heating coil 200 to heat and weld the workpiece to be welded 600, and controls the liquid cooling device to introduce cooling water into the liquid cooling channel 120 during the welding process of the workpiece to be welded 600.

[0078] Specifically, in this step, after the induction heating coil 200 and the welding position of the workpiece to be welded 600 are aligned, the control system 300 starts to control the induction heating coil 200 to start, so that the induction heating coil 200 starts to heat and weld the welding position of the workpiece to be welded 600. As the welding duration increases, after heat transfer, the temperature of the clamping part 100 gradually rises. At this time, the control system 300 can control the liquid cooling device to introduce cooling water into the liquid cooling channel 120. During the process of the cooling water circulating in the liquid cooling channel 120, a large amount of heat can be absorbed, so as to achieve the purpose of reducing the temperature of the clamping part 100 and preventing the surface of the workpiece to be welded 600 from being damaged due to the too high temperature of the clamping part 100. For example, a preset welding time can be set in the control system 300 in advance. When the welding duration of the induction heating coil 200 for the workpiece to be welded 600 reaches the preset welding time, the control system 300 will control the liquid cooling device to introduce cooling water into the liquid cooling channel 120.

[0079] In this embodiment, when using the welding device 10 to weld the workpiece to be welded 600, first, the workpiece to be welded 600 is clamped in the clamping groove 110 of the clamping part 100, and the workpiece to be welded 600 is clamped and positioned by the clamping part 100. Then, the induction heating coil 200 is aligned with the welding position of the workpiece to be welded 600, so that the induction heating coil 200 provides the required welding temperature for the workpiece to be welded 600. As the welding time increases, the temperature of the clamping part 100 gradually rises under the action of heat transfer. At this time, the control system 300 can control the liquid cooling device to start and control the liquid cooling device to fill the liquid cooling channel 120 with cooling water. The cooling water circulates in the liquid cooling channel 120, so that the cooling water can absorb the heat of the clamping part 100, thus achieving the purpose of reducing the surface temperature of the clamping part 100.

[0080] In the welding method provided by this embodiment, the control system 300 can control the induction heating coil 200 to heat and weld the workpiece to be welded 600, which is beneficial to improving the welding accuracy and welding automation level of the workpiece to be welded 600. Moreover, the control system 300 can control the liquid cooling device to introduce cooling water into the liquid cooling channel 120, which is beneficial to quickly reducing the temperature of the clamping part 100, preventing the surface of the workpiece to be welded 600 clamped by the clamping part 100 from being damaged, and improving the welding quality of the workpiece to be welded 600. In addition, the clamping part 100 can stably clamp the workpiece to be welded 600, ensuring that the workpiece to be welded 600 does not shake during welding, which is beneficial to improving the welding stability of the workpiece to be welded 600.

[0081] In some embodiments, referring to Figures 2 to 5 , the welding device 10 includes a temperature detection component 400 and a protective cover 500. A welding cavity is provided in the protective cover 500. The induction heating coil 200 can weld the workpiece to be welded 600 in the welding cavity. The temperature detection component 400 is communicatively connected with the control system 300 and is used to monitor the temperature in the welding cavity.

[0082] Based on the specific structure of the above-mentioned welding device 10, its welding method includes: the temperature detection component 400 detects the temperature in the welding cavity during the welding process of the workpiece to be welded 600. When the detected value of the temperature detection component 400 is greater than the preset temperature value, the control system 300 controls the induction heating coil 200 to stop welding the workpiece to be welded 600.

[0083] Specifically, in this embodiment, the control system 300 can obtain the feedback result of the temperature detection component 400 in real time to ensure that the control system 300 can make adaptive adjustments to the heating state of the induction heating coil 200 according to the feedback result. For example, when the detected value of the temperature detection component 400 is greater than the preset temperature value, the control system 300 controls the induction heating coil 200 to stop welding the workpiece to be welded 600, or the control system 300 can also control the induction heating coil 200 to reduce the welding temperature to ensure that the workpiece to be welded 600 is always within the normal welding temperature range and prevent the workpiece to be welded 600 from being burned by high temperature. Or, when the detected value of the temperature detection component 400 is less than the preset temperature value, the control system 300 controls the induction heating coil 200 to increase the temperature and at the same time controls the induction heating coil 200 to increase the heating power to ensure that the welding temperature of the induction heating coil 200 can quickly reach the preset temperature value, which is beneficial to improving the welding efficiency of the induction heating coil 200 for the workpiece to be welded 600 and saving the welding time cost of the induction heating coil 200 for the workpiece to be welded 600.

[0084] Or, in some other embodiments, the control system 300 controls the liquid cooling device to increase the flow rate of the cooling water introduced into the liquid cooling channel 120.

[0085] Specifically, in this embodiment, when the flow rate of the cooling water in the liquid cooling channel 120 increases, the heat absorption efficiency of the cooling water can be improved, and the temperature of the clamping part 100 will quickly decrease, which is beneficial to balancing the high temperature in the welding cavity and ensuring the welding quality of the workpiece to be welded 600.

[0086] Or, in some other embodiments, the control system 300 controls the liquid cooling device to reduce the temperature of the cooling water introduced into the liquid cooling channel 120.

[0087] Specifically, in this embodiment, similar to the control method in the above embodiment, when the temperature of the cooling water in the liquid cooling channel 120 decreases, the heat absorption efficiency of the cooling water can be improved, and the temperature of the clamping part 100 will quickly decrease, which is beneficial to balancing the high temperature in the welding cavity and ensuring the welding quality of the workpiece to be welded 600.

[0088] In some embodiments, the welding method includes: when the detected value of the temperature detection component 400 is greater than the preset temperature value, the control system 300 controls the induction heating coil 200 to stop welding the workpiece to be welded 600, and at the same time, the control system 300 controls the liquid cooling device to increase the flow rate of the cooling water flowing into the liquid cooling channel 120 or decrease the temperature of the cooling water flowing into the liquid cooling channel 120. When the detected value of the temperature detection component 400 decreases to the preset temperature value, the control system 300 controls the induction heating coil 200 to resume welding the workpiece to be welded 600.

[0089] Specifically, in this embodiment, when the detected value of the temperature detection component 400 is greater than the preset temperature value, on the one hand, by controlling the induction heating coil 200 to stop heating and welding through the control system 300, active cooling in the welding chamber can be achieved. On the other hand, by controlling the liquid cooling device to increase the flow rate of the cooling water flowing into the liquid cooling channel 120 or decrease the temperature of the cooling water flowing into the liquid cooling channel 120 through the control system 300, passive cooling in the welding chamber can be achieved. Adopting the combination of active cooling and passive cooling is beneficial to further quickly reduce the welding temperature in the welding chamber and ensure the welding stability and welding safety of the workpiece to be welded 600.

[0090] Similarly, when the detected value of the temperature detection component 400 decreases to the preset temperature value, on the one hand, by controlling the induction heating coil 200 to resume welding the workpiece to be welded 600 through the control system 300, active heating in the welding chamber can be achieved. On the other hand, by controlling the liquid cooling device to decrease the flow rate of the cooling water flowing into the liquid cooling channel 120 or increase the temperature of the cooling water flowing into the liquid cooling channel 120 through the control system 300, passive heating in the welding chamber can be achieved. Adopting the combination of active heating and passive heating is beneficial to further quickly increase the welding temperature in the welding chamber and ensure the welding efficiency of the workpiece to be welded 600.

[0091] In some embodiments, the protective cover 500 has air blowing holes communicating with the welding chamber, and the air blowing holes are adapted to be connected to a protective gas device for blowing an inert protective gas into the welding chamber.

[0092] Based on the specific structure of the above welding equipment 10, its welding method includes: during the process of the induction heating coil 200 welding the workpiece to be welded 600, the protective gas device blows an inert protective gas (for example, the inert protective gas can be argon, etc.) into the welding chamber. When the detected value of the temperature detection component 400 is greater than the preset temperature value, the control system 300 controls the protective gas device to lower the temperature of the inert protective gas.

[0093] Specifically, in this embodiment, the protective gas device blows inert protective gas into the welding chamber during the process of the induction heating coil 200 welding the workpiece to be welded 600. On the one hand, the inert protective gas can isolate the workpiece to be welded 600 from the air in the welding chamber (especially oxygen in the air), effectively preventing the surface of the workpiece to be welded 600 from being oxidized and improving the welding effect and appearance quality of the workpiece to be welded 600. On the other hand, the inert protective gas can disperse welding impurities, making the welding impurities away from the workpiece to be welded 600, effectively preventing the welding impurities from damaging the surface of the workpiece to be welded 600 and ensuring the welding quality of the workpiece to be welded 600. On the other hand, the inert protective gas can assist in heat dissipation, effectively reducing the temperature in the welding chamber and preventing the surface of the workpiece to be welded 600 from being damaged due to high temperature.

[0094] When the detected value of the temperature detection component 400 is greater than the preset temperature value, the control system 300 controls the protective gas device to reduce the temperature of the inert protective gas, and the inert protective gas can be used to assist in cooling the welding chamber, improving the cooling rate in the welding chamber.

[0095] In some embodiments, referring to Figures 2 to 5 , the protective cover 500 includes a first cover body 510 and a second cover body 520. When the first cover body 510 and the second cover body 520 are in a buckled state, they form a welding chamber, and when the first cover body 510 and the second cover body 520 are in a separated state, the workpiece to be welded 600 is exposed. During the process of the welding device 10 welding the workpiece to be welded 600, the workpiece to be welded 600 is placed in the welding chamber of the protective cover 500. After the workpiece to be welded 600 is in the welding position, the protective cover 500 is switched from the separated state to the buckled state to enclose the workpiece to be welded 600 in the welding chamber. After the workpiece to be welded 600 is welded or when it is detected that the actual welding temperature is higher than the preset welding temperature, the protective cover 500 is switched from the buckled state to the separated state to expose the workpiece to be welded 600 outside the protective cover 500.

[0096] Based on the specific structure of the above welding device 10, its welding method includes: after the induction heating coil 200 moves to the welding position of the workpiece to be welded 600, the first cover body 510 and the second cover body 520 are switched from the separated state to the buckled state. When the detected value of the temperature detection component 400 is greater than the preset temperature value, the first cover body 510 and the second cover body 520 are switched from the buckled state to the separated state, and the control system 300 controls the induction heating coil 200 to stop welding the workpiece to be welded 600, and the workpiece to be welded 600 remains in the state of being clamped by the clamping portion 100.

[0097] Specifically, in this embodiment, during actual welding, the induction heating coil 200 welds the workpiece to be welded 600 in a closed working environment. On the one hand, the closed welding chamber has a good heat preservation effect, which can reduce the welding power of the induction heating coil 200 when welding the workpiece to be welded 600 and lower the requirements for the equipment. On the other hand, the closed welding chamber can collect welding fumes and prevent the welding fumes from escaping everywhere, thus improving the working environment.

[0098] When the detected value of the temperature detection component 400 is greater than the preset temperature value, the first cover 510 and the second cover 520 are switched from the buckled state to the separated state, so that the workpiece to be welded 600 is exposed to the air, which is beneficial to realizing the rapid heat dissipation of the workpiece to be welded 600. At the same time, the control system 300 controls the induction heating coil 200 to stop heating and welding the workpiece to be welded 600, thus effectively preventing the workpiece to be welded 600 from being burned and ensuring the welding quality of the workpiece to be welded 600.

[0099] In some embodiments, the control system 300 includes a parameter input module, and the parameter input module is used to input welding parameters. For example, the parameter input module may include a touch screen, and corresponding welding parameter settings can be selected through the touch screen.

[0100] Based on the specific structure of the above welding device 10, its welding method includes: before the induction heating coil 200 welds the workpiece to be welded 600, a mode selection step is executed. The mode selection step includes: if the first operation mode is selected, in the first operation mode, the parameter input module is configured to manually input welding parameters, and the welding parameters include at least one of welding temperature, welding power, welding time, and cooling water flow rate. The control system 300 controls the welding device 10 to execute control instructions according to the welding parameters in the first operation mode. If the second operation mode is selected, in the second operation mode, a preset parameter set in the parameter input module is selected, and the parameter set includes at least one of welding temperature, welding power, welding time, and cooling water flow rate. The control system 300 controls the welding device 10 to execute control instructions according to the parameter set in the second operation mode.

[0101] Specifically, in this embodiment, before starting the welding device 10, the operator can select different operation modes according to different welding situations. For example, the first operation mode is suitable for the new process verification stage. In the first operation mode, each welding parameter can be selected and set individually, or manual input can be performed for a single welding parameter. A welding recipe database can be stored in the control system 300, and specific welding parameters can be associated through the addition method of the welding filler metal, the type and variety of the welding filler metal, etc., and based on the existing welding parameters, manual fine-tuning can be continuously performed according to the actual welding situation to gradually correct the welding parameters, ensuring that the workpiece to be welded 600 has the best welding effect and improving the welding accuracy and quality of the workpiece to be welded 600. Taking the welding condition where the addition method is wire winding, the added brand is DHAg-60ANi / diameter 1.0 mm welding filler metal, and the flux is QJ122 as an example, at this time, the control system 300 can call out relevant welding parameters. For example, in the above welding condition, the welding temperature of the welding device 10 can be between 750 °C and 800 °C (including the end values), the welding time can be between 8 s and 15 s (including the end values), the welding power can be between 13 kW and 16 kW (including the end values), and the flow rate of the inert protective gas blown into the welding chamber can be between 5 L / min and 10 L / min (including the end values). During the welding process in the first operation mode, the operator can manually observe the welding effect of the workpiece to be welded 600 in real time and can continuously fine-tune the welding parameters through the parameter input module to keep the welding parameters within the optimal range. For example, the operator can appropriately increase / decrease the welding temperature, increase / shorten the welding time, increase / decrease the welding power, increase / decrease the flow rate of the inert protective gas introduced, etc. according to the actual welding situation.

[0102] The second operation mode is suitable for the mass production stage of the mature process. In the second operation mode, each welding parameter is already within the optimal welding range. Therefore, in the second operation mode, the welding parameters are locked and cannot be changed or adjusted, which is conducive to realizing the automatic welding of the workpiece to be welded 600 and improving the welding efficiency of mass-producing the workpiece to be welded 600. During the welding process in the second operation mode, after the control system 300 controls the welding device 10 to start, the welding device 10 will directly perform welding operations on the workpiece to be welded 600 until the welding is completed. During the above welding process, the parameter input module is in a locked state to prevent the operator from accidentally touching it.

[0103] After the workpiece to be welded 600 is welded, or before the workpiece to be welded 600 is welded, the information of the workpiece to be welded 600 is re-identified, and the preset operation mode in the control system 300 is re-matched according to the information of the workpiece to be welded 600. For example, it is confirmed whether to execute the first operation mode or the second operation mode according to the information of the workpiece to be welded 600, ensuring that the control system 300 can generate a new welding plan according to the workpiece to be welded 600.

[0104] In some embodiments, referring to Figures 2 to 5 , the welding device 10 further includes a temperature detection component 400 for detecting the welding temperature of the workpiece to be welded 600. The parameter input module is configured to record the temperature change curve according to the temperature information detected by the temperature detection component 400. For example, the parameter input module may include a display screen, and the temperature change curve may be displayed on the display screen so that the operator can intuitively observe the change trend of the temperature change curve. When the temperature change power of the temperature change curve reaches the preset temperature change power and the welding temperature of the temperature change curve reaches the preset welding temperature, the control system 300 controls the welding device 10 to stop executing the corresponding control instruction, and manually controls the welding device 10 to execute the corresponding control instruction through the parameter input module. For example, when the temperature change power of the temperature change curve reaches the preset temperature change power and the welding temperature of the temperature change curve reaches the preset welding temperature, the control system 300 controls the induction heating coil 200 to stop heating and welding the workpiece to be welded 600, and manually adjusts the welding parameters through the parameter input module.

[0105] Specifically, in this embodiment, the control system 300 can obtain the temperature change curve generated by the parameter input module, and the control system 300 is further connected to an alarm device. The temperature change curve can intuitively reflect the welding condition of the workpiece to be welded 600. When the actual temperature change power reaches the preset temperature change power and the actual welding temperature reaches the preset welding temperature, the alarm device will be triggered to remind the operator to finely adjust the welding parameters to obtain the optimal welding temperature during the welding of the mature product.

[0106] In other embodiments, the welding device 10 further includes a temperature recorder, which can obtain and store the temperature change curve generated by the parameter input module. When the welded workpiece 600 after welding has a welding quality problem, the temperature change curve can be checked to determine whether there is an abnormality in the production process, so as to facilitate the traceability and analysis of the production process.

[0107] In some embodiments, the welding method includes: after the clamping portion 100 clamps the workpiece to be welded 600, the induction heating coil 200 can move towards the welding position of the workpiece to be welded 600, the first cover 510 moves towards the workpiece to be welded 600 and the induction heating coil 200, and the second cover 520 moves towards the workpiece to be welded 600 and the induction heating coil 200 to enclose the workpiece to be welded 600 and the induction heating coil 200 in the welding cavity. After the workpiece to be welded 600 is welded or when the detected value of the temperature detection component 400 is greater than the preset temperature value, the first cover 510 moves away from the workpiece to be welded 600 and the induction heating coil 200, and the second cover 520 moves away from the workpiece to be welded 600 and the induction heating coil 200, and the induction heating coil 200 can move away from the workpiece to be welded 600 to expose the workpiece to be welded 600. For example, the induction heating coil 200, the first cover 510, and the second cover 520 can be driven by a driving motor or a driving cylinder.

[0108] Specifically, in this embodiment, in the initial state, that is, when the clamping portion 100 clamps the workpiece to be welded 600, the first cover 510 and the second cover 520 are in a separated state. In this state, the operating space around the clamping portion 100 is relatively large, which facilitates clamping the workpiece to be welded 600 to the clamping portion 100. After the workpiece to be welded 600 is clamped and positioned, first, the induction heating coil 200 can move to the welding position of the workpiece to be welded 600, and then the first cover 510 can move towards the workpiece to be welded 600 and the induction heating coil 200. At the same time, the second cover 520 can move towards the workpiece to be welded 600 and the induction heating coil 200. The first cover 510 and the second cover 520 are in a buckled state, and a welding cavity is formed between the first cover 510 and the second cover 520. In this state, the workpiece to be welded 600 and the induction heating coil 200 are surrounded by the first cover 510 and the second cover 520 in the welding cavity, so that the workpiece to be welded 600 is in a relatively sealed welding environment, effectively preventing welding fumes from leaking out to the workshop. After the workpiece to be welded 600 is welded or when the detected value of the temperature detection component 400 is greater than the preset temperature value, first, the first cover 510 can move away from the workpiece to be welded 600 and the induction heating coil 200. At the same time, the second cover 520 can move away from the workpiece to be welded 600 and the induction heating coil 200. The first cover 510 and the second cover 520 are again in a separated state. Then the induction heating coil 200 can move away from the workpiece to be welded 600. In this state, the workpiece to be welded 600 can be naturally cooled to facilitate unloading the workpiece to be welded 600 from the clamping portion 100.

[0109] In some other embodiments, the welding device 10 includes a cold air blowing device. After the welding of the workpiece to be welded 600 is completed, or when the detected value of the temperature detection component 400 is greater than the preset temperature value, the cold air blowing device can blow cold air towards the workpiece to be welded 600, enabling the workpiece to be welded 600 to cool down rapidly.

[0110] In some embodiments, the welding chamber is communicated with the negative pressure dust removal component through a pipeline. The control system 300 can control the opening or closing of the negative pressure dust removal component.

[0111] Based on the specific structure of the above-mentioned welding device 10, its welding method includes: when the first cover body 510 and the second cover body 520 are in the buckled state, the negative pressure dust removal component provides negative pressure suction to the welding chamber; when the first cover body 510 and the second cover body 520 are in the separated state, the negative pressure dust removal component stops providing negative pressure suction to the welding chamber.

[0112] Specifically, in this embodiment, when welding the workpiece to be welded 600 (i.e., when the first cover body 510 and the second cover body 520 are in the buckled state), the control system 300 can control the negative pressure dust removal component to start, and a negative pressure suction can be formed in the welding chamber through the negative pressure dust removal component. Under the action of the negative pressure suction, the welding fumes generated in the welding chamber can be discharged from the smoke exhaust port along the smoke exhaust pipeline and collected in the negative pressure dust removal component. With the above design, the welding fumes can be centrally discharged and collected, preventing the welding fumes from polluting the working area, which is beneficial to improving the working environment of the operators. In addition, the welding fumes may be mixed with welding impurities. Timely discharging the welding fumes in the welding chamber can prevent the welding impurities from scratching the surface of the workpiece to be welded 600 and ensure the welding quality of the workpiece to be welded 600. After the welding of the workpiece to be welded 600 is completed (i.e., when the first cover body 510 and the second cover body 520 are in the separated state), the control system 300 can control the negative pressure dust removal component to close to save processing costs and avoid waste of processing resources.

[0113] It should be noted that other contents of the welding method disclosed in the present invention can be referred to the prior art and will not be elaborated here.

[0114] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A welding method, characterized in that, For a welding device to weld a workpiece to be welded, the welding method includes: Identifying information of the workpiece to be welded; Matching a preset operation mode in a control system according to the information of the workpiece to be welded; If the control system fails to match the information of the workpiece to be welded, the control system controls the welding device to execute a first operation mode. In the first operation mode, the control system automatically generates a first temperature change curve, and a parameter input module is configured to manually input welding parameters according to the first temperature change curve. The welding parameters include at least one of welding temperature, welding power, welding time, and cooling water flow rate; the control system controls the welding device to execute a control instruction according to the welding parameters in the first operation mode; Wherein, at least one of the actual welding temperature and the actual welding power can be obtained in real time according to the first temperature change curve. Based on the comparison between the actual welding temperature and the preset welding temperature, and / or based on the comparison between the actual welding power and the preset welding power, the parameter input module is configured to manually change the welding parameters, and the control system controls the welding device to execute a control instruction according to the changed welding parameters.

2. The welding method according to claim 1, wherein, If the actual welding temperature is lower than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to increase the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to reduce the cooling water flow rate; If the actual welding temperature is higher than the preset welding temperature, the parameter input module is configured to manually change the welding temperature to lower the welding temperature, and / or the parameter input module is configured to manually change the welding power to decrease the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

3. The welding method according to claim 1, wherein If the actual welding power is lower than the preset welding power, the parameter input module is configured to manually change the welding temperature to increase the welding temperature, and / or the parameter input module is configured to manually change the welding power to increase the welding power, and / or the parameter input module is configured to manually change the welding time to extend the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to reduce the cooling water flow rate; If the actual welding power is higher than the preset welding power, the parameter input module is configured to manually change the welding temperature to reduce the welding temperature, and / or the parameter input module is configured to manually change the welding power to reduce the welding power, and / or the parameter input module is configured to manually change the welding time to shorten the welding time, and / or the parameter input module is configured to manually change the cooling water flow rate to increase the cooling water flow rate.

4. The welding method according to claim 1, characterized in that, Based on the welding parameters manually input by the parameter input module multiple times according to the first temperature change curve, the control system automatically generates a temperature change trend curve; If the actual welding temperature is within the change threshold of the preset welding temperature, the actual welding power is within the change threshold of the preset welding power, and the temperature change trend curve is stable within the temperature change threshold for a preset duration, the parameter input module turns off the function of manually inputting the welding parameters.

5. The welding method according to claim 4, wherein, Based on the temperature change trend curve, the control system generates a target welding plan, and the target welding plan is stored in the control system.

6. The welding method according to claim 4, characterized in that, In response to an unlocking instruction, the parameter input module activates the function of manually inputting the welding parameters, so that the control system controls the welding equipment to execute a control command according to the re-set welding parameters.

7. The welding method according to claim 1, wherein If the control system matches the information of the workpiece to be welded, it controls the welding equipment to execute the second operation mode. In the second operation mode, a preset parameter set in the parameter input module is selected. The parameter set includes at least one of welding temperature, welding power, welding time, and cooling water flow rate; the control system controls the welding equipment to execute a control instruction according to the parameter set in the second operation mode; Wherein, the control system generates a second temperature change curve according to the welding information of the welding equipment in the second operation mode.

8. The welding method according to claim 1, characterized in that During the process of the welding equipment welding the workpiece to be welded, the workpiece to be welded is placed in the welding cavity of the protective cover. The protective cover has a separated state and a closed state; Wherein, in the separated state, the workpiece to be welded is exposed outside the protective cover; in the closed state, the protective cover forms the welding cavity.

9. The welding method according to claim 8, wherein, After the workpiece to be welded is in the welding position, the protective cover is switched from the separated state to the closed state to enclose the workpiece to be welded in the welding cavity; After the workpiece to be welded is welded or when it is detected that the actual welding temperature is higher than the preset welding temperature, the protective cover is switched from the closed state to the separated state to expose the workpiece to be welded outside the protective cover.

10. The welding method according to claim 1, characterized in that, After the workpiece to be welded is welded, or before the workpiece to be welded is welded, the information of the workpiece to be welded is re-identified, and the operation mode preset in the control system is re-matched according to the information of the workpiece to be welded.

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