Welding control methods, devices, electronic terminals and computer-readable storage media

Abstract

This application provides a welding control method, apparatus, electronic terminal, and computer-readable storage medium. The welding control method includes: detecting welding information at the current moment during the welding process to obtain parameter information; determining the welding stage of the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; determining welding parameters according to the parameter information at the current moment and preset variation parameters corresponding to the welding stage at the current moment; the preset variation parameters include voltage change rate and current change rate; and performing welding based on the welding parameters. This application determines welding parameters by using the parameter information at the current moment and the preset variation parameters corresponding to the welding stage at the current moment, so as to control welding based on the corresponding preset variation parameters at different welding stages, thereby reducing spatter during welding.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a welding control method, apparatus, electronic terminal and computer-readable storage medium. Background Technology

[0002] Welding of thick steel plates is involved in fields such as large-scale engineering machinery, steel structures, boilers, and marine vessels. Since different steel materials have deep V or deep U grooves during the splicing process, multi-layer and multi-pass welding is often used for this type of weld. Due to the uneven welding skills of welders, it is difficult to control the welding efficiency and welding quality of the weld. Summary of the Invention

[0003] The main technical problem addressed by this application is to provide a welding control method, apparatus, electronic terminal, and computer-readable storage medium to solve the problem of poor welding quality in the prior art.

[0004] To solve the above-mentioned technical problems, the first technical solution adopted in this application is: to provide a welding control method, the welding control method comprising:

[0005] The welding information at the current moment during the welding process is detected to obtain parameter information, including arc voltage and current data.

[0006] Based on the parameter information at the current moment, determine the welding stage in the welding process at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage;

[0007] Welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include the voltage change rate and the current change rate.

[0008] Welding is performed based on welding parameters.

[0009] Among them, determining the welding stage in the welding process based on the parameter information at the current moment includes:

[0010] At the beginning of the welding cycle, in response to the current arc voltage being less than the preset voltage but greater than the first voltage and / or the current data being greater than the preset current but less than the first current, it is determined that the current moment is in the droplet formation stage.

[0011] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0012] In response to the current moment being in the droplet formation stage, the parameter information of the current moment is controlled to change according to the first preset change rate to obtain the welding parameters; the first preset change rate includes the first preset voltage change rate and / or the first preset current change rate; the first preset voltage change rate is negative; the first preset current change rate is positive.

[0013] The droplet formation stage includes a first stage and a second stage; the average rate of change of parameter information in the first stage is greater than the average rate of change of parameter information in the second stage.

[0014] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0015] In response to the fact that the current moment is in the first stage, the arc voltage at the current moment is controlled to drop to the second voltage based on the first preset slope to obtain the welding parameters of the first stage;

[0016] When the arc voltage reaches the second voltage, the welding cycle enters the second stage.

[0017] In response to the current moment being in the second stage, the arc voltage at the current moment is controlled to drop to the first voltage based on the second preset slope to obtain the welding parameters for the second stage.

[0018] Among them, determining the welding stage in the welding process based on the parameter information at the current moment includes:

[0019] During the droplet formation stage, in response to the current arc voltage being greater than the first voltage and less than the third voltage and / or the current data being less than the first current and greater than the third current, the jetting transition stage is determined to begin at the current moment.

[0020] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0021] In response to the current moment being in the spray transition phase, the parameter information at the current moment is changed according to the second preset change rate to obtain the welding parameters; the second preset change rate includes the second preset voltage change rate and / or the second preset current change rate; the second preset voltage change rate is a positive value; the second preset current change rate is a negative value.

[0022] The injection transition phase includes a third stage and a fourth stage; the average rate of change of parameter information in the third stage is greater than that in the fourth stage.

[0023] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0024] In response to the fact that the current moment is in the third stage, the arc voltage at the current moment is increased to the fourth voltage based on the third preset slope to obtain the welding parameters for the third stage.

[0025] When the arc voltage reaches the fourth voltage, the welding cycle is determined to enter the fourth stage.

[0026] In response to the current moment being in the fourth stage, the arc voltage at the current moment is increased to the third voltage based on the fourth preset slope to obtain the welding parameters for the fourth stage; the first voltage, the fourth voltage, and the third voltage are increased sequentially.

[0027] The welding cycle also includes a short-circuit transition phase; the short-circuit transition phase includes a short-circuit section and a transition section.

[0028] Based on the parameter information at the current moment, determine the welding stage in the welding process at the current moment, including:

[0029] Based on the welding stages at previous historical moments and the parameter information at the current moment, determine the welding stage in the welding process at the current moment.

[0030] Specifically, based on the welding stages at previous historical moments and the parameter information at the current moment, the welding stage at the current moment is determined, including:

[0031] If the current moment is in the droplet formation stage and the current arc voltage is equal to or less than the fifth and sixth voltages, then the current moment is determined to be in the short circuit segment; the sixth voltage, the fifth voltage, and the first voltage decrease sequentially.

[0032] If the current moment is in the short-circuit phase and the arc voltage reaches the sixth voltage, then the current moment is determined to enter the transition phase.

[0033] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0034] In response to the current moment being in the short circuit segment, the parameter information of the current moment is controlled to change according to the third preset change rate to obtain the welding parameters of the short circuit segment; the third preset change rate includes the third preset voltage change rate and / or the third preset current change rate; the third preset voltage change rate is zero; the third preset current change rate is positive.

[0035] When the current data reaches the sixth current, it is determined that the system is entering the transition phase.

[0036] In response to the current moment being in the transition phase, the current at the current moment is controlled to decrease to the first current according to the fourth preset rate of change to obtain the welding parameters for the transition phase.

[0037] The short-circuit segment includes a first short-circuit stage and a second short-circuit stage; the average rate of change of current data in the first short-circuit stage is not greater than the average rate of change of current data in the second short-circuit stage.

[0038] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0039] In response to the current moment being in the first short circuit stage, the current data at the current moment is increased to the seventh current based on the fifth preset slope to obtain the welding parameters for the first short circuit stage;

[0040] If the response current data reaches the seventh current, it is determined that the welding cycle has entered the second short-circuit stage;

[0041] In response to the current moment being in the second short-circuit stage, the current data at the current moment is increased to the sixth current based on the sixth preset slope to obtain the welding parameters for the second short-circuit stage; the seventh current and the sixth current are increased sequentially.

[0042] The transition segment includes a first transition stage and a second transition stage; the average rate of change of parameter information in the first transition stage is greater than the average rate of change of parameter information in the second transition stage.

[0043] Specifically, welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment, including:

[0044] In response to the fact that the current moment is in the first transition stage, the current data at the current moment is reduced to the eighth current based on the seventh preset slope to obtain the welding parameters for the first transition stage.

[0045] If the response current data reaches the eighth current, it is determined that the welding cycle has entered the second transition stage;

[0046] In response to the fact that the current moment is in the second transition phase, the current data at the current moment is reduced to the first current based on the eighth preset slope to obtain the welding parameters for the second transition phase; the sixth current, the eighth current and the first current decrease in sequence.

[0047] Determining the welding stage in the welding process based on the parameter information at the current moment also includes:

[0048] The welding stage at the current moment is determined based on at least one of the current arc voltage, voltage change rate, current data, and current change rate.

[0049] Determining the welding stage in the welding process based on the parameter information at the current moment also includes:

[0050] If the duration of the welding phase corresponding to the historical moment adjacent to the current moment does not reach the preset duration, then the welding phase of the historical moment is taken as the welding phase of the current moment.

[0051] And / or, in response to the welding stage corresponding to a historical moment adjacent to the current moment reaching a preset duration, the next welding stage adjacent to the welding stage corresponding to the historical moment is taken as the welding stage of the current moment.

[0052] To solve the above-mentioned technical problems, the second technical solution adopted in this application is: to provide a welding control device, the welding control device comprising:

[0053] The acquisition module is used to detect the welding information at the current moment during the welding process and obtain parameter information, including arc voltage and current data.

[0054] The analysis module is used to determine the welding stage in the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage;

[0055] The determination module is used to determine the welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include the voltage change rate and the current change rate.

[0056] The control module is used to perform welding based on welding parameters.

[0057] To solve the above-mentioned technical problems, the third technical solution adopted in this application is: to provide an electronic terminal, which includes a memory and a processor coupled to each other, the processor being used to execute program instructions stored in the memory, and the processor being used to execute program data to implement the steps in the above-mentioned welding control method.

[0058] To solve the above-mentioned technical problems, the fourth technical solution adopted in this application is: to provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps in the welding control method described above.

[0059] The beneficial effects of this application are as follows: Unlike existing technologies, this application provides a welding control method, apparatus, electronic terminal, and computer-readable storage medium. The welding control method includes: detecting welding information at the current moment during the welding process to obtain parameter information; the parameter information includes arc voltage and current data; determining the welding stage of the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; each welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage; determining welding parameters based on the parameter information at the current moment and preset variation parameters corresponding to the welding stage at the current moment; the preset variation parameters include voltage change rate and current change rate; and performing welding based on the welding parameters. This application determines welding parameters by using the parameter information at the current moment and the preset variation parameters corresponding to the welding stage at the current moment, thereby controlling welding based on the corresponding preset variation parameters at different welding stages, reducing spatter during welding, improving arc stability, accelerating the droplet transfer frequency, increasing the welder's welding speed, and improving welding efficiency. Attached Figure Description

[0060] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0061] Figure 1 This is a schematic flowchart of an embodiment of the welding control method provided in this application;

[0062] Figure 2 These are the arc voltage waveform and current data waveform corresponding to the first specific embodiment of the welding control method provided in this application;

[0063] Figure 3 These are the arc voltage waveform and current data waveform corresponding to the second specific embodiment of the welding control method provided in this application;

[0064] Figure 4 These are the arc voltage waveform and current data waveform corresponding to the third specific embodiment of the welding control method provided in this application;

[0065] Figure 5 These are the arc voltage waveform and current data waveform corresponding to the fourth specific embodiment of the welding control method provided in this application;

[0066] Figure 6 This is a schematic diagram of the frame of an embodiment of the welding control device provided in this application;

[0067] Figure 7 This is a schematic diagram of the framework of an embodiment of the electronic terminal provided in this application;

[0068] Figure 8 This is a schematic diagram of a framework of an embodiment of the computer-readable storage medium provided in this application. Detailed Implementation

[0069] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0070] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0071] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "more" in this article means two or more objects.

[0072] To enable those skilled in the art to better understand the technical solution of this application, a welding control method provided by this application will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0073] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0074] Before providing a further detailed description of the embodiments of this application, the nouns and terms involved in the embodiments of this application will be explained, and the nouns and terms involved in the embodiments of this application shall be interpreted as follows.

[0075] The main function of the arc section is heating and melting. The heat generated by the arc melts the tip of the welding wire to form molten droplets, and heats the base material to form a molten pool, storing material and energy for subsequent droplet transfer. The energy output is mainly arc heat, and the relatively stable heat input determines the temperature and size of the molten pool.

[0076] The main function of the short-circuit section is droplet transfer. During a short circuit, the large current causes the short-circuit bridge (the connection between the droplet and the molten pool) to be "exploded" or broken due to resistance heat and electromagnetic force. The droplet detaches from the welding wire and enters the molten pool, completing one transfer. The energy output is mainly due to the resistance heat of the short-circuit current, while electromagnetic force (Lorentz force) and surface tension drive the droplet transfer. The heat input is relatively low during this stage, which can prevent the thin plate from burning through.

[0077] The welding control method provided in this application can be implemented by a server or terminal alone, or by a server and terminal working together. In some embodiments, the terminal or server can implement the welding control method provided in this application by running a computer program. For example, the computer program can be a native program or software module in an operating system; it can be a native application (APP), i.e., a program that needs to be installed in the operating system to run, such as a client that supports virtual scenes, such as a game APP; it can also be a mini-program, i.e., a program that only needs to be downloaded to a browser environment to run; or it can be a mini-program that can be embedded in any APP. In short, the above-mentioned computer program can be any form of application, module, or plugin.

[0078] The following uses a server implementation as an example to illustrate the welding control method provided in the embodiments of this application.

[0079] Please see Figure 1 , Figure 1 This is a flowchart illustrating the welding control method provided in this application.

[0080] This embodiment provides a welding control method, which includes the following steps.

[0081] S1: Detect the welding information at the current moment during the welding process to obtain parameter information; the parameter information includes arc voltage and current data.

[0082] S2: Based on the parameter information at the current moment, determine the welding stage in the welding process at the current moment; the welding process includes multiple welding cycles; the welding cycle includes the droplet formation stage and the spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage.

[0083] S3: Determine the welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include the voltage change rate and the current change rate.

[0084] S4: Welding based on welding parameters.

[0085] In high-current welding, the entire welding process is in a complete spray state under mixed gas, but in an incomplete spray state under carbon dioxide gas, that is, there are some instantaneous short circuits during the spray. However, the welding process can be controlled in the same way as laboratory tests and field verification, and only the process parameters of each stage need to be finely adjusted.

[0086] Please see Figures 2 to 5 , Figure 2These are the arc voltage waveform and current data waveform corresponding to the first specific embodiment of the welding control method provided in this application; Figure 3 These are the arc voltage waveform and current data waveform corresponding to the second specific embodiment of the welding control method provided in this application; Figure 4 These are the arc voltage waveform and current data waveform corresponding to the third specific embodiment of the welding control method provided in this application; Figure 5 These are the arc voltage waveform and current data waveform corresponding to the fourth specific embodiment of the welding control method provided in this application.

[0087] Specifically, the specific implementation method for determining the welding stage in the welding process based on the parameter information at the current moment in step S2 is as follows.

[0088] Specifically, the welding stage at the current moment is determined based on at least one of the arc voltage, voltage change rate, current data, and current change rate at the current moment.

[0089] In one embodiment, at the beginning of the welding cycle, in response to the current arc voltage being less than a preset voltage but greater than a first voltage V1 and / or the current data being greater than a preset current but less than a first current I1, it is determined that the current moment is in the droplet formation stage. The droplet formation stage includes a first stage and a second stage.

[0090] In one embodiment, the average rate of change of parameter information in the first stage is greater than the average rate of change of parameter information in the second stage.

[0091] In one embodiment, the voltage change rate corresponding to the first stage is greater than the voltage change rate corresponding to the second stage; the current change rate corresponding to the first stage is greater than the current change rate corresponding to the second stage.

[0092] In one embodiment, in response to the fact that the duration of the welding stage corresponding to the historical moment adjacent to the current moment does not reach the preset duration, the welding stage of the historical moment is taken as the welding stage of the current moment.

[0093] In one embodiment, in response to the welding stage corresponding to a historical moment adjacent to the current moment reaching a preset duration, the next welding stage adjacent to the welding stage corresponding to the historical moment is taken as the welding stage of the current moment.

[0094] In one specific embodiment, at the beginning of the welding cycle, in response to the current arc voltage being less than a preset voltage and greater than a second voltage V2 and / or the current data being greater than a preset current and less than a second current I2, it is determined that the current moment is in the first stage.

[0095] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the first stage, and the duration of the first stage not reaching the first duration, it is determined that the current time is in the first stage.

[0096] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the first stage, and the duration of the first stage reaching a first duration, it is determined that the current time is in the second stage.

[0097] In one specific embodiment, at the beginning of the welding cycle, in response to the current arc voltage being less than the second voltage V2 and greater than the first voltage V1 and / or the current data being greater than the second current I2 and less than the first current I1, it is determined that the current moment is in the second stage; the preset voltage, the second voltage V2 and the first voltage V1 decrease sequentially; the preset current, the second current I2 and the first current I1 increase sequentially.

[0098] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second stage, and the duration of the second stage not reaching the second duration, it is determined that the current time is in the second stage.

[0099] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second stage, and the duration of the second stage reaching the second duration, it is determined that the current time is in the spraying transition stage.

[0100] In one embodiment, during the droplet formation stage, in response to the current arc voltage being greater than a first voltage V1 and less than a third voltage V3 and / or the current data being less than a first current I1 and greater than a third current I3, it is determined that the current moment is in the jetting transition stage. The jetting transition stage includes a third stage and a fourth stage.

[0101] In one embodiment, the average rate of change of parameter information in the third stage is greater than the average rate of change of parameter information in the fourth stage.

[0102] In one embodiment, the voltage change rate corresponding to the third stage is greater than the voltage change rate corresponding to the fourth stage; the current change rate corresponding to the third stage is greater than the current change rate corresponding to the fourth stage.

[0103] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second stage, and the duration of the second stage reaching the second duration, it is determined that the current time is in the third stage.

[0104] In one specific embodiment, the welding stage corresponding to the spray transition stage or the historical moment adjacent to the current moment is the second stage. In response to the arc voltage at the current moment being greater than the first voltage V1 and less than the fourth voltage V4 and / or the current data at the current moment being less than the first current I1 and greater than the fourth current I4, it is determined that the current moment is in the third stage.

[0105] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the third stage, and the duration of the third stage not reaching the third duration, it is determined that the current time is in the third stage.

[0106] In one specific embodiment, in response to the welding stage corresponding to the historical moment adjacent to the current moment being the third stage, and the duration of the third stage reaching the third duration, it is determined that the current moment is in the fourth stage.

[0107] In one specific embodiment, the welding stage corresponding to the spray transition stage or the historical moment adjacent to the current moment is the third stage. In response to the current moment's arc voltage being less than the third voltage V3 and greater than the fourth voltage V4 and / or the current data being less than the fourth current I4 and greater than the third current I3, it is determined that the current moment is in the fourth stage. The first voltage V1, the fourth voltage V4 and the third voltage V3 increase sequentially; the first current I1, the fourth current I4 and the third current I3 decrease sequentially.

[0108] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the fourth stage, and the duration of the fourth stage not reaching the fourth duration, it is determined that the current time is in the fourth stage.

[0109] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the fourth stage, and the duration of the fourth stage reaching the fourth duration, it is determined that the current time is in the first stage.

[0110] Specifically, the welding stage at the current moment can be determined based on the voltage change rate and / or current change rate at the current moment.

[0111] Specifically, based on the parameter information at the current moment and the parameter information at historical moments before the current moment, the parameter change rate corresponding to the current moment is determined; based on the parameter change rate at the current moment, the welding stage in the welding process is determined.

[0112] In one specific embodiment, if the rate of change of parameters at the current moment meets the first preset rate of change, then it is determined that the current moment is in the droplet formation stage.

[0113] In one specific embodiment, if the rate of change of parameters at the current moment meets the second preset rate of change, then it is determined that the current moment is in the injection transition phase.

[0114] In one embodiment, the welding cycle further includes a short-circuit transition phase, which is located between the droplet formation phase and the spray transition phase. The short-circuit transition phase includes a short-circuit segment and a transition segment, with the short-circuit segment following the transition segment.

[0115] If, in response to the historical moment preceding the current moment being in the droplet formation stage, and the current arc voltage being less than the fifth voltage V5 and the sixth voltage V6, or the current data being greater than the fifth current I5 and less than the sixth current I6, then the current moment is determined to be in a short-circuit segment; the sixth voltage V6, the fifth voltage V5, and the first voltage V1 decrease sequentially, and the fifth current I5 is less than the first current I1. The short-circuit segment includes a first short-circuit stage and a second short-circuit stage.

[0116] In one embodiment, the average rate of change of current data during the first short-circuit phase is not greater than the average rate of change of current data during the second short-circuit phase.

[0117] In one specific embodiment, in response to the fact that the historical time before the current time was in the droplet formation stage and the current data at the current time is greater than the fifth current I5 and less than the seventh current I7, it is determined that the current time is in the first short circuit stage.

[0118] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second stage, and the duration of the second stage reaching the second duration, it is determined that the current time is in the first short circuit stage.

[0119] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the first short circuit stage, and the duration of the first short circuit stage not reaching the fifth duration, it is determined that the current time is in the first short circuit stage.

[0120] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the first short circuit stage, and the duration of the first short circuit stage reaching the fifth duration, it is determined that the current time is in the second short circuit stage.

[0121] In one specific embodiment, in response to the fact that the historical time before the current time was in the droplet formation stage and the current data at the current time is greater than the seventh current I7 and less than the sixth current I6, it is determined that the current time is in the second short circuit stage.

[0122] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second short circuit stage, and the duration of the second short circuit stage not reaching the sixth duration, it is determined that the current time is in the second short circuit stage.

[0123] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second short-circuit stage, and the duration of the second short-circuit stage reaching the sixth duration, it is determined that the current time is in the transition phase.

[0124] The arc voltage corresponding to the first short circuit stage and the second short circuit stage is zero.

[0125] In one embodiment, in response to a historical moment prior to the current moment being in a short-circuit segment and the arc voltage reaching the sixth voltage, it is determined that the current moment enters the transition segment.

[0126] In one specific embodiment, in response to the historical time preceding the current time being in the short-circuit segment, and the current arc voltage being less than the sixth voltage V6 and greater than the first voltage V1, and / or the current data being less than the sixth current I6 and greater than the first current I1, it is determined that the current time is in the transition segment; the transition segment is included in the arcing segment. The transition segment includes a first transition stage and a second transition stage.

[0127] In one embodiment, the average rate of change of parameter information in the first transition phase is greater than the average rate of change of parameter information in the second transition phase.

[0128] In one embodiment, the voltage change rate corresponding to the first transition stage is greater than the voltage change rate corresponding to the second transition stage; the current change rate corresponding to the first transition stage is greater than the current change rate corresponding to the second transition stage.

[0129] In one specific embodiment, in response to the historical period before the current time being in a short-circuit segment and the current data at the current time being less than the sixth current I6 and greater than the eighth current I8, it is determined that the current time is in the first transition phase.

[0130] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second short-circuit stage, and the duration of the second short-circuit stage reaching the sixth duration, it is determined that the current time is in the first transition stage.

[0131] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the first transition stage, and the duration of the first transition stage not reaching the seventh duration, it is determined that the current time is in the first transition stage.

[0132] In one specific embodiment, in response to the fact that the historical period before the current time was in a short circuit segment and the current data at the current time is greater than the first current I1 and less than the eighth current I8, it is determined that the current time is in the second transition stage.

[0133] In one specific embodiment, in response to the welding stage corresponding to the historical time adjacent to the current time being the second transition stage, and the duration of the second transition stage reaching the eighth duration, it is determined that the current time is in the third stage.

[0134] In this embodiment, the voltage change rate is the average change rate of the arc voltage over a preset time period, and the current change rate is the average change rate of the current data over a preset time period.

[0135] Specifically, the specific implementation method for determining the welding parameters in step S3 based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment is as follows.

[0136] In one embodiment, in response to the current moment being in the droplet formation stage, the parameter information at the current moment is controlled to change according to a first preset change rate to obtain welding parameters; the first preset change rate includes a first preset voltage change rate and / or a first preset current change rate; the first preset voltage change rate is a negative value; the first preset current change rate is a positive value.

[0137] In one specific embodiment, in response to being in the first stage A at the current moment, the arc voltage at the current moment is controlled to drop to a second voltage based on a first preset slope to obtain the welding parameters for the first stage; the first preset slope includes a first voltage change rate and / or a first current change rate; the value range of the first current change rate can be [25A / ms, 150A / ms]. For example, the value range of the first current change rate can be [25A / ms, 75A / ms].

[0138] When the arc voltage reaches the second voltage, the welding cycle enters the second stage.

[0139] In one specific embodiment, in response to being in the second stage B at the current moment, the arc voltage at the current moment is controlled to drop to the first voltage based on the second preset slope to obtain the welding parameters of the second stage; the second preset slope includes the second voltage change rate and / or the second current change rate; the absolute value of the second voltage change rate is less than the absolute value of the first voltage change rate; the absolute value of the second current change rate is not greater than the absolute value of the first current change rate.

[0140] In one embodiment, in response to being in the spray transition phase at the current moment, the parameter information at the current moment is changed according to a second preset change rate to obtain welding parameters; the second preset change rate includes a second preset voltage change rate and / or a second preset current change rate; the second preset voltage change rate is a positive value; the second preset current change rate is a negative value.

[0141] In one specific embodiment, in response to the current moment being in the third stage C, the arc voltage at the current moment is increased to a fourth voltage based on a third preset slope to obtain the welding parameters for the third stage; the third preset slope includes a third voltage change rate and / or a third current change rate. The absolute value of the third current change rate can range from [50 A / ms, 250 A / ms]. For example, the absolute value of the third current change rate can range from [100 A / ms, 200 A / ms].

[0142] When the arc voltage reaches the fourth voltage, the welding cycle enters the fourth stage.

[0143] In one specific embodiment, in response to the current moment being in the fourth stage D, the arc voltage at the current moment is increased to the third voltage based on the fourth preset slope to obtain the welding parameters of the fourth stage; the first voltage, the fourth voltage, and the third voltage increase sequentially; the fourth preset slope includes the fourth voltage change rate and / or the fourth current change rate; the absolute value of the fourth voltage change rate is less than the absolute value of the third voltage change rate; the absolute value of the fourth current change rate is not greater than the absolute value of the third current change rate; the absolute value of the fourth current change rate is less than 50A / ms.

[0144] In one embodiment, in response to the current moment being in a short-circuit segment, the parameter information at the current moment is controlled to change according to a third preset change rate to obtain the welding parameters for the short-circuit segment; the third preset change rate includes a third preset voltage change rate and / or a third preset current change rate; the third preset voltage change rate is zero; the third preset current change rate is positive; the absolute value of the third current change rate ranges from [10A / ms, 50A / ms].

[0145] In one specific embodiment, in response to the current moment being in the first short-circuit stage E, the current data at the current moment is increased to the seventh current based on the fifth preset slope to obtain the welding parameters for the first short-circuit stage; the fifth preset slope includes the fifth voltage change rate and / or the fifth current change rate.

[0146] If the response current data reaches the seventh current, it is determined that the welding cycle has entered the second short-circuit stage.

[0147] In one specific embodiment, in response to the current moment being in the second short-circuit stage H, the current data at the current moment is increased to the sixth current based on the sixth preset slope to obtain the welding parameters for the second short-circuit stage; the seventh current and the sixth current increase sequentially. The sixth rate of change includes the sixth voltage rate of change and / or the sixth current rate of change; the absolute value of the sixth voltage rate of change is less than the absolute value of the third voltage rate of change; the absolute value of the sixth current rate of change is not greater than the absolute value of the fifth current rate of change.

[0148] When the current data reaches the sixth current, it is determined that the transition phase has begun.

[0149] In one embodiment, in response to being in the transition phase at the current moment, the current at the current moment is controlled to decrease to the first current according to a fourth preset rate of change to obtain the welding parameters for the transition phase. The fourth preset rate of change includes a fourth preset voltage rate of change and / or a fourth preset current rate of change; the fourth preset voltage rate of change is negative; the fourth preset current rate of change is negative.

[0150] In one specific embodiment, in response to the current moment being in the first transition stage F, the current data at the current moment is controlled to decrease to the eighth current based on the seventh preset slope to obtain the welding parameters of the first transition stage; the seventh preset slope includes the seventh voltage change rate and / or the seventh current change rate.

[0151] If the response current data reaches the eighth current, it is determined that the welding cycle has entered the second transition stage.

[0152] In one specific embodiment, in response to the current moment being in the second transition stage G, the current data at the current moment is controlled to decrease to the first current based on the eighth preset slope to obtain the welding parameters for the second transition stage; the sixth current, the eighth current, and the first current decrease sequentially. The eighth preset slope includes the eighth voltage change rate and / or the eighth current change rate; the absolute value of the eighth voltage change rate is less than the absolute value of the seventh voltage change rate; the absolute value of the eighth current change rate is less than the absolute value of the seventh current change rate; the absolute value of the eighth current change rate is less than 1A / ms.

[0153] Specifically, the specific implementation method of welding based on welding parameters in step S4 is as follows.

[0154] By precisely controlling the dynamic characteristics of arc voltage and current, combined with signal processing and feedback control technology, a stable and high-quality welding process is achieved. Specifically, welding control is achieved by controlling the arc voltage and its rate of change, which in turn affect the current, and by performing multi-stage filtering and loop control on the arc voltage and its rate of change, as well as the current and its rate of change.

[0155] In one embodiment, the arc voltage and voltage change rate are independently controlled at each welding stage, and precise arc behavior regulation is achieved by dynamically adjusting controller parameters. Specifically, the arc voltage and voltage change rate are filtered separately. For example, the arc voltage is first low-pass filtered to obtain a smooth, accurate arc voltage, and then the voltage change rate is obtained by differentiating (or differentiating) the filtered arc voltage, reducing noise in the voltage signal. Filtering can be performed using an RC filter, a simple yet important passive circuit composed of resistors and capacitors, widely used in electronic systems to filter out signals of specific frequencies, achieving signal smoothing, noise reduction, and interference suppression. Other filters can also be used for filtering, and this is not limited to these specific methods.

[0156] By setting the voltage value and voltage change rate corresponding to different welding stages, and controlling the voltage change rate of each welding stage through different voltage loop parameters, welding can be carried out based on the voltage change rate and arc voltage corresponding to the welding stage.

[0157] Welding power supply is controlled based on welding parameters to reduce spatter during welding and accelerate the droplet transfer frequency to 40Hz~65Hz, thereby increasing the welder's welding speed and improving welding efficiency.

[0158] In this embodiment, by controlling the arc voltage and current data during the welding cycle, welding spatter is effectively reduced.

[0159] During welding, the arc length can be stabilized by maintaining a stable average arc voltage at each welding stage. In welding, the average arc voltage refers to the average instantaneous voltage across the arc (usually between the electrode and the workpiece) over a certain time period. It is a core parameter reflecting the stable state of arc energy and a key indicator for indirectly controlling arc length and ensuring welding quality.

[0160] Specifically, there is a positive correlation between arc voltage and arc length; the longer the arc length, the greater the arc resistance, and the higher the arc voltage. Therefore, by controlling the stability of the average arc voltage, the stability of the arc length can be indirectly controlled. When the average arc voltage changes, it means that the arc length has changed, and adjustments are needed to maintain the stability of the arc length.

[0161] In a first specific embodiment, the welding cycle only includes the arc-burning phase, i.e., only the spray transition exists, and short-circuit transition is almost non-existent. Specifically, in this embodiment, the welding cycle includes a first stage, a second stage, a third stage, and a fourth stage arranged sequentially. The first stage is denoted as A, the second stage as B, the third stage as C, and the fourth stage as D, and so on. Figure 2As shown. The first and second stages are the droplet growth stages, while the third and fourth stages are the processes of droplets detaching and transitioning into the molten pool under the influence of gravity and electromagnetic forces. The welding cycle is approximately 30Hz-70Hz.

[0162] The first stage is the stable arc ignition stage during droplet transition. Arc voltage control in this stage aims to reduce oscillations during the droplet-to-molten pool transition process. The arc voltage in the first stage decreases over time, while the current data in the first stage increases over time.

[0163] After the first stage lasts for a preset duration, the second stage begins. This second stage is the droplet growth stage, and arc voltage control during this stage aims to suppress short circuits and reduce spatter. As the distance between the droplet and the molten pool gradually decreases, the arc voltage in the second stage decreases over time. Conversely, as the droplet grows larger and its gravity increases, the current in the second stage increases over time. The average rate of change of arc voltage in the first stage differs from that in the second stage, and the average rate of change of current data in both stages also differs. Specifically, the average rate of change of arc voltage in the second stage is less than that in the first stage, and the average rate of change of current data in the second stage is less than that in the first stage. The average rate of change of arc voltage in the first stage is determined based on the rate of change of arc voltage at each moment within the first stage. The average rate of change of current data in the first stage is determined based on the rate of change of current data at each moment within the first stage. The average rate of change of arc voltage in the second stage is determined based on the rate of change of arc voltage at each moment within the second stage. The average rate of change of the current data in the second stage is determined based on the rate of change of the current data at each time point within the second stage.

[0164] As the electromagnetic contraction force and the plasma force along the arc column direction also increase, the molten droplet is continuously subjected to the compressive force of the gas reaction expansion, which gradually causes the molten droplet to transition into the molten pool. Therefore, it is necessary to control the arc voltage in the second stage to improve the directivity and melting depth of the entire arc.

[0165] Once the third stage begins, which is the pre-droplet shedding stage, arc voltage control is used to reduce arc interruption and stabilize the arc voltage. The arc voltage in the third stage increases over time, while the current decreases. Slight electrical explosions can occur in the early stages of the third stage, which can easily lead to arc instability and fluctuations. Controlling this stage effectively reduces arc fluctuations and enhances arc stability.

[0166] Upon entering the fourth stage, the droplet-breaking stage, arc voltage control forces the molten droplet arc to completely detach, preventing excessive droplet expansion during detachment and ensuring its directional accuracy. The arc voltage in the fourth stage increases over time, while the current decreases. The average rate of change of arc voltage in the third stage differs from that in the fourth stage, as does the average rate of change of current data. Specifically, the average rate of change of arc voltage in the fourth stage is less than that in the third stage, and the average rate of change of current data in the fourth stage is less than that in the third stage. The average rate of change of arc voltage in the third stage is determined based on the rate of change of arc voltage at each moment within the third stage. The average rate of change of current data in the fourth stage is also determined based on the rate of change of current data at each moment within the third stage. The average rate of change of the current data in the fourth stage is determined based on the rate of change of the current data at each time point within the fourth stage.

[0167] In this embodiment, within the same welding stage of a welding cycle, the rate of change of the arc voltage at different times may be consistent or inconsistent; the rate of change of the current data at different times may also be inconsistent. A welding stage within a welding cycle corresponds to an average rate of change of the arc voltage and an average rate of change of the current data.

[0168] Excessive arc voltage in the fourth stage can lead to an increased arc length, and in extreme cases, it can even break the arc's center of gravity. Therefore, controlling the stability of the arc voltage in the fourth stage can effectively control the stability of the arc length throughout the entire process. When the arc voltage is less than the third voltage or the current is greater than the third current, the system transitions to the first stage.

[0169] The rate of change of arc voltage corresponding to the first, second, third, and fourth stages can be linear or nonlinear; the rate of change of voltage data corresponding to the first, second, third, and fourth stages can be linear or nonlinear.

[0170] In one specific embodiment, the welding cycle includes only the arc-burning segment.

[0171] In the second specific embodiment, the welding cycle only includes the arc-burning phase. Specifically, the welding cycle includes a first stage, a second stage, a third stage, and a fourth stage arranged sequentially. The first stage is denoted as A, the second stage as B, the third stage as C, and the fourth stage as D, and so on. Figure 3As shown. The first and second stages are the droplet growth stages, while the third and fourth stages are the processes of droplets detaching and transitioning into the molten pool under the influence of gravity and electromagnetic forces. The welding cycle is approximately 30Hz-70Hz.

[0172] The first stage is the stable arc ignition stage during droplet transition. Arc voltage control in this stage aims to reduce oscillations during the droplet-to-molten pool transition process. The arc voltage in the first stage decreases over time, while the current data in the first stage increases over time.

[0173] After the first stage lasts for a preset duration, the second stage begins. This second stage is the droplet growth stage, and arc voltage control during this stage aims to suppress short circuits and reduce spatter. As the distance between the droplet and the molten pool gradually decreases, the arc voltage in the second stage decreases over time. Conversely, as the droplet grows larger and its gravity increases, the current in the second stage increases over time. The average rate of change of the arc voltage in the first stage differs from that in the second stage, while the average rate of change of the current in the first stage is the same as that in the second stage. Specifically, the average rate of change of the arc voltage in the second stage is less than that in the first stage, while the rate of change of the current in the second stage is equal to that in the first stage. As the electromagnetic contraction force and the plasma force along the arc column increase, the droplet is continuously subjected to the compressive force of gas reaction expansion, gradually causing it to transition into the molten pool. Therefore, it is necessary to control the arc voltage in the second stage to improve the overall arc directionality and melting depth. The average rate of change of the current in the first and second stages ranges from [25 A / ms to 75 A / ms]. The entire molten pool returned to calm, and the welding wire burned steadily.

[0174] Entering the third stage, the pre-droplet detachment stage, involves controlling the arc voltage to reduce arc interruption and stabilize the arc voltage. The arc voltage in the third stage increases over time, while the current decreases. A slight electrical explosion can occur in the early part of the third stage, easily leading to arc instability and fluctuations. Controlling this stage reduces these fluctuations and enhances arc stability. To accommodate the varying arc response speeds under different welding gases, the rate of change of the current in the third stage can be adjusted. Typically, MAG welding produces smaller droplet diameters than CO2 welding, making this stage more suitable for MAG welding. MAG welding is a mixed-gas shielded welding process where a small amount of an oxidizing gas (oxygen, carbon dioxide, or a mixture thereof) is added to argon. This welding technique is characterized by the addition of a certain amount of active gas as a shielding gas to an inert gas, protecting the molten pool and welding area from oxidation and nitriding during the welding process. MAG welding offers advantages such as high welding speed, deep penetration, and high weld quality, and is widely used in steel, aerospace, automotive, and construction industries. CO2 welding, or carbon dioxide gas shielded welding, is a widely used welding method.

[0175] Upon entering the fourth stage, the droplet-breaking stage, arc voltage control forces the molten droplet arc to completely detach, preventing excessive droplet expansion during detachment and ensuring its directional accuracy. The arc voltage in the fourth stage increases over time, while the current decreases. The average rate of change of the arc voltage in the third and fourth stages differs, while the average rate of change of the current in the third and fourth stages is the same. Specifically, the average rate of change of the arc voltage in the fourth stage is less than that in the third stage, while the average rate of change of the current in the fourth stage is equal to that in the third stage. Excessive arc voltage in the fourth stage can lead to a longer arc length, potentially even breaking the arc's center of gravity. Therefore, controlling the stability of the arc voltage in the fourth stage effectively controls the stability of the arc length throughout the entire process. When the arc voltage or current is less than the third voltage or current, the system transitions to the first stage. The change rate of the current data for the third and fourth stages ranges from 75 A / ms to 250 A / ms. The change rate of the current data for the fourth stage can also be fine-tuned depending on the welding material. Generally, the change rate of the current data for MAG welding is smaller than that for CO2 welding.

[0176] In this embodiment, the rate of change of the arc voltage corresponding to the first stage, the second stage, the third stage, and the fourth stage can be linear or nonlinear.

[0177] In this embodiment, within the same welding stage of a welding cycle, the rate of change of the arc voltage at each moment may or may not be consistent; the rate of change of the current data at each moment is consistent. A welding stage in a welding cycle corresponds to an average rate of change of the arc voltage and an average rate of change of the current data.

[0178] In the third embodiment, based on the first embodiment, the welding cycle also includes a short-circuit segment. That is, in addition to the spray transition described in the first and second embodiments, a short-circuit transition also exists in the welding cycle. Taking a welding cycle with one short-circuit transition and one spray transition as an example, in this embodiment, the welding cycle includes a first stage, a second stage, a short-circuit segment, a first transition stage, a second transition stage, a third stage, and a fourth stage arranged sequentially. The first stage is denoted as A, the second stage as B, the short-circuit segment as E, the first transition stage as F, the second transition stage as G, the third stage as C, and the fourth stage as D, etc. Figure 4 As shown. The welding cycle is approximately 30Hz-70Hz. The change rates corresponding to the first, second, third, and fourth stages can be set according to the settings in the first specific embodiment. The specific change rates are set according to the different gas, welding materials, and welding wire diameters, and will not be elaborated further here.

[0179] The short-circuit section is the arc short-circuit stage, indicating a short circuit between the molten droplet and the molten pool. Upon entering the short-circuit section, the molten droplet explodes, generating spatter that transitions into the molten pool. The current data controls the wettability of the molten pool; too low a current data can lead to insufficient setter transition, while too high a current data can result in a relatively dry molten pool and uneven molding. The arc voltage corresponding to the short-circuit section can be zero, and the current data corresponding to the short-circuit section increases over time.

[0180] The first transition stage is the necking stage. After entering the first transition stage, the arc voltage corresponding to the first transition stage does not increase with time, and the current data corresponding to the first transition stage decreases with time. The average rate of change of the current data corresponding to the first transition stage ranges from [25A / ms to 150A / ms].

[0181] After the first transition phase lasts for 1 to 5 ms, the second transition phase begins. The second transition phase, F, is the full arc ignition phase. The arc voltage in the second transition phase does not increase over time, while the current in the second transition phase decreases over time. The average rate of change of the current in the second transition phase is less than that in the first transition phase, and is less than 25 A / ms. The current drop slope in both the first and second transition phases effectively controls the energy of the arc ignition phase after the short circuit. Firstly, it controls the size of the molten ball; secondly, it controls the time it takes for the molten ball to grow, thus controlling the transition period and the hardness of the arc.

[0182] Specifically, the necking stage is determined by the rate of decrease of the current data based on the rate of decrease of the arc voltage. When the arc voltage is detected and the rate of change of the voltage meets the judgment value, the necking is completed and the stage of full arc ignition begins.

[0183] The rate of change of current data for the first transition stage, the second transition stage, the third stage, and the fourth stage can be adjusted according to different gases, welding materials, and welding wire diameters.

[0184] In the fourth embodiment, based on the third embodiment, the short-circuit segment includes a first short-circuit stage and a second short-circuit stage. That is, the welding cycle includes a first stage, a second stage, a first short-circuit stage, a second short-circuit stage, a first transition stage, a second transition stage, a third stage, and a fourth stage arranged sequentially. The first stage is denoted as A, the second stage as B, the first short-circuit stage as E, the second short-circuit stage as H, the first transition stage as F, the second transition stage as G, the third stage as C, and the fourth stage as D. Figure 5 As shown. The welding cycle is approximately 30Hz-70Hz. The change rates corresponding to the first stage, second stage, first transition stage, second transition stage, third stage, and fourth stage can be set according to the third specific embodiment. The specific change rates are set according to the different gas, welding materials, and welding wire diameters, and will not be elaborated further here. The first short-circuit stage represents the early stage of the short circuit between the molten droplet and the molten pool, and the second short-circuit stage represents the later stage of the short circuit between the molten droplet and the molten pool.

[0185] Upon entering the first short-circuit stage, the arc voltage corresponding to this stage can be zero, and the current data for this stage increases over time. Upon entering the second short-circuit stage, the arc voltage corresponding to this stage can also be zero, and the current data for this stage increases over time. The average rate of change of the current data in the second short-circuit stage is less than the average rate of change of the current data in the first short-circuit stage.

[0186] In the above embodiments, the first voltage V1, the second voltage V2, the third voltage V3, the fourth voltage V4, the fifth voltage V5, and the sixth voltage V6 can be numerical values ​​or numerical ranges, and can be set according to the actual situation. The first current I1, the second current I2, the third current I3, the fourth current I4, the fifth current I5, the sixth current I6, the seventh current I7, and the eighth current I8 can be numerical values ​​or numerical ranges, and can be set according to the actual situation.

[0187] The welding control method provided in this embodiment determines the welding parameters by using the parameter information at the current moment and the preset changing parameters corresponding to the welding stage at the current moment. This allows for welding control based on the corresponding preset changing parameters at different welding stages, thereby reducing welding spatter, improving arc stability, accelerating the droplet transfer frequency, increasing the welder's welding speed, and improving welding efficiency.

[0188] Please see Figure 6 , Figure 6 This is a schematic diagram of a framework of an embodiment of the welding control device provided in this application. This embodiment provides a welding control device 60, which includes a data acquisition module 61, an analysis module 62, a determination module 63, and a control module 64.

[0189] The acquisition module 61 is used to detect the welding information at the current moment during the welding process and obtain parameter information, including arc voltage and current data.

[0190] The analysis module 62 is used to determine the welding stage in the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage.

[0191] The determination module 63 is used to determine the welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include the voltage change rate and the current change rate.

[0192] The control module 64 is used for welding based on welding parameters.

[0193] The welding control device 60 provided in this embodiment determines the welding parameters by using the parameter information at the current moment and the preset changing parameters corresponding to the welding stage at the current moment. This allows for control of welding based on the corresponding preset changing parameters at different welding stages, thereby reducing spatter during welding, improving arc stability, accelerating the droplet transfer frequency, increasing the welder's welding speed, and improving welding efficiency.

[0194] Please see Figure 7 , Figure 7 This is a schematic diagram of a framework of an embodiment of the electronic terminal provided in this application. The electronic terminal 80 includes a memory 81 and a processor 82 coupled to each other. The processor 82 is used to execute program instructions stored in the memory 81 to implement the steps of any of the above-described welding control method embodiments. In a specific implementation scenario, the electronic terminal 80 may include, but is not limited to, a microcomputer or a server. In addition, the electronic terminal 80 may also include mobile devices such as laptops and tablets, which are not limited here.

[0195] Specifically, processor 82 controls itself and memory 81 to implement the steps of any of the above-described welding control method embodiments. Processor 82 can also be referred to as a CPU (Central Processing Unit). Processor 82 may be an integrated circuit chip with signal processing capabilities. Processor 82 can also be a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. A general-purpose processor can be a microprocessor or any conventional processor. Furthermore, processor 82 can be implemented using integrated circuit chips.

[0196] The above scheme includes the following welding control method: detecting welding information at the current moment during the welding process to obtain parameter information; the parameter information includes arc voltage and current data; determining the welding stage in the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; each welding cycle includes at least an arc-burning segment; the arc-burning segment includes multiple welding stages; determining welding parameters according to the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include voltage change rate and current change rate; and performing welding based on the welding parameters.

[0197] Please see Figure 8 , Figure 8 This is a schematic diagram of a framework of an embodiment of the computer-readable storage medium provided in this application. The computer-readable storage medium 90 stores program instructions 901 that can be executed by a processor. The program instructions 901 are used to implement the steps of any of the above-described welding control method embodiments.

[0198] The above scheme includes the following welding control method: detecting welding information at the current moment during the welding process to obtain parameter information; the parameter information includes arc voltage and current data; determining the welding stage in the welding process based on the parameter information at the current moment; the welding process includes multiple welding cycles; each welding cycle includes at least an arc-burning segment; the arc-burning segment includes multiple welding stages; determining welding parameters according to the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include voltage change rate and current change rate; and performing welding based on the welding parameters.

[0199] In some embodiments, the functions or modules of the apparatus provided in this disclosure can be used to perform the methods described in the above method embodiments. The specific implementation can be referred to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0200] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0201] In the several embodiments provided in this application, it should be understood that the disclosed methods and apparatus can be implemented in other ways. For example, the apparatus implementations described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms.

[0202] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0203] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0204] The above are merely embodiments of this application and do not limit the scope of patent protection of this application. Any equivalent structural or procedural changes made using the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A welding control method characterized by, The welding control method includes: The welding information at the current moment during the welding process is detected to obtain parameter information, which includes arc voltage and current data. Based on the parameter information at the current moment, it is determined that the current moment is in the welding stage of the welding process; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage; Welding parameters are determined based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include the voltage change rate and the current change rate. Welding is performed based on the aforementioned welding parameters; The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the spray transition phase, the parameter information at the current moment is changed according to the second preset change rate to obtain the welding parameters; the second preset change rate includes the second preset voltage change rate and / or the second preset current change rate; the second preset voltage change rate is positive; the second preset current change rate is negative.

2. The welding control method according to claim 1, characterized in that, Determining that the current moment is in the welding stage of the welding process based on the parameter information at the current moment includes: At the beginning of the welding cycle, in response to the current arc voltage being less than a preset voltage but greater than a first voltage and / or the current data being greater than a preset current but less than a first current, it is determined that the current moment is in the droplet formation stage.

3. The welding control method according to claim 2, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the droplet formation stage, the parameter information at the current moment is controlled to change according to a first preset change rate to obtain the welding parameters; the first preset change rate includes a first preset voltage change rate and / or a first preset current change rate; the first preset voltage change rate is a negative value; the first preset current change rate is a positive value.

4. The welding control method of claim 2, wherein, The droplet formation stage includes a first stage and a second stage; the average rate of change of the parameter information in the first stage is greater than the average rate of change of the parameter information in the second stage.

5. The welding control method according to claim 4, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the first stage, the arc voltage at the current moment is controlled to drop to a second voltage based on a first preset slope to obtain the welding parameters of the first stage; When the arc voltage reaches the second voltage, it is determined that the welding cycle has entered the second stage; In response to the current moment being in the second stage, the arc voltage at the current moment is controlled to drop to the first voltage based on the second preset slope to obtain the welding parameters for the second stage.

6. The welding control method according to claim 1, characterized in that, Determining that the current moment is in the welding stage of the welding process based on the parameter information at the current moment includes: During the droplet formation stage, in response to the current arc voltage being greater than a first voltage and less than a third voltage and / or the current data being less than a first current and greater than a third current, the jetting transition stage is determined to begin at the current moment.

7. The welding control method of claim 6, wherein, The injection transition phase includes a third phase and a fourth phase; the average rate of change of the parameter information in the third phase is greater than the average rate of change of the parameter information in the fourth phase.

8. The welding control method according to claim 7, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the third stage, the arc voltage at the current moment is increased to a fourth voltage based on a third preset slope to obtain the welding parameters for the third stage; When the arc voltage reaches the fourth voltage, the welding cycle is determined to enter the fourth stage. In response to the current moment being in the fourth stage, the arc voltage at the current moment is increased to the third voltage based on the fourth preset slope to obtain the welding parameters of the fourth stage; the first voltage, the fourth voltage and the third voltage are increased sequentially.

9. The welding control method of any one of claims 1-8, wherein, The welding cycle also includes a short-circuit transition phase; the short-circuit transition phase includes a short-circuit section and a transition section. Determining that the current moment is in the welding stage of the welding process based on the parameter information at the current moment includes: Based on the welding stage at historical moments prior to the current moment and the parameter information at the current moment, it is determined that the current moment is at the welding stage of the welding process.

10. The welding control method according to claim 9, characterized in that, Determining the welding stage in the welding process based on the welding stages of historical times prior to the current time and the parameter information of the current time includes: If the historical time preceding the current time is in the droplet formation stage and the arc voltage at the current time is equal to a preset voltage or less than the fifth and sixth voltages, then the current time is determined to be in the short-circuit segment; the sixth voltage, the fifth voltage, and the first voltage decrease sequentially. If the historical time preceding the current time was in the short-circuit segment and the arc voltage reached the sixth voltage, then the current time is determined to enter the transition segment.

11. The welding control method according to claim 10, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the short-circuit segment, the parameter information of the current moment is controlled to change according to a third preset change rate to obtain the welding parameters of the short-circuit segment; the third preset change rate includes a third preset voltage change rate and / or a third preset current change rate; the third preset voltage change rate is zero; the third preset current change rate is a positive value; In response to the current data reaching the sixth current, it is determined that the transition phase will be entered; In response to the current moment being in the transition segment, the current at the current moment is controlled to decrease to the first current according to the fourth preset rate of change to obtain the welding parameters of the transition segment.

12. The welding control method of claim 9, wherein, The short-circuit segment includes a first short-circuit stage and a second short-circuit stage; the average rate of change of the current data in the first short-circuit stage is not greater than the average rate of change of the current data in the second short-circuit stage.

13. The welding control method according to claim 12, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the first short circuit stage, the current data at the current moment is increased to the seventh current based on the fifth preset slope to obtain the welding parameters for the first short circuit stage. If the current data reaches the seventh current, then the welding cycle is determined to have entered the second short-circuit stage; In response to the current moment being in the second short-circuit stage, the current data at the current moment is increased to the sixth current based on the sixth preset slope to obtain the welding parameters for the second short-circuit stage; the seventh current and the sixth current are increased sequentially.

14. The welding control method of claim 9, wherein, The transition segment includes a first transition stage and a second transition stage; the average rate of change of the parameter information in the first transition stage is greater than the average rate of change of the parameter information in the second transition stage.

15. The welding control method according to claim 14, characterized in that, The step of determining welding parameters based on the parameter information at the current moment and the preset change parameters corresponding to the welding stage at the current moment includes: In response to the current moment being in the first transition phase, the current data at the current moment is controlled to decrease to the eighth current based on the seventh preset slope to obtain the welding parameters for the first transition phase. If the current data reaches the eighth current, then the welding cycle is determined to enter the second transition phase. In response to the current moment being in the second transition phase, the current data at the current moment is controlled to decrease to the first current based on the eighth preset slope to obtain the welding parameters for the second transition phase; the sixth current, the eighth current, and the first current decrease sequentially.

16. The welding control method according to claim 1, characterized in that, The step of determining that the current moment is in the welding stage of the welding process based on the parameter information of the current moment further includes: The welding stage at the current moment is determined based on at least one of the arc voltage, the voltage change rate, the current data, and the current change rate at the current moment.

17. The welding control method according to claim 1, characterized in that, The step of determining that the current moment is in the welding stage of the welding process based on the parameter information of the current moment further includes: If the duration of the welding stage corresponding to a historical moment adjacent to the current moment does not reach a preset duration, then the welding stage of the historical moment is taken as the welding stage of the current moment. And / or, in response to the duration of the welding stage corresponding to a historical time adjacent to the current time reaching the preset duration, the next welding stage adjacent to the welding stage corresponding to the historical time is taken as the welding stage of the current time.

18. A welding control device, characterized in that, The welding control device is applicable to the welding control method according to any one of claims 1 to 17, and the welding control device comprises: The acquisition module is used to detect the welding information at the current moment during the welding process and obtain parameter information; the parameter information includes arc voltage and current data. An analysis module is used to determine, based on parameter information at the current moment, the welding stage of the welding process; the welding process includes multiple welding cycles; the welding cycle includes a droplet formation stage and a spray transition stage; in a single welding cycle, the spray transition stage follows the droplet formation stage; The determining module is configured to determine welding parameters based on the parameter information at the current moment and preset change parameters corresponding to the welding stage at the current moment; the preset change parameters include voltage change rate and current change rate; and is further configured to, in response to the current moment being in the spray transition stage, change the parameter information at the current moment according to a second preset change rate to obtain the welding parameters; the second preset change rate includes a second preset voltage change rate and / or a second preset current change rate; the second preset voltage change rate is positive; the second preset current change rate is negative. A control module is used to perform welding based on the welding parameters.

19. An electronic terminal, characterized in that, The electronic terminal includes a memory and a processor coupled to each other. The processor is used to execute program instructions stored in the memory and to execute program data to implement the steps in the welding control method as described in any one of claims 1 to 17.

20. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the welding control method as described in any one of claims 1 to 17.

Images