Waveform adjusting method and system for consumable electrode pulse welding droplet transition
By acquiring and optimizing welding current parameters and voltage waveforms, and adjusting the droplet transition time, the problem of welding instability caused by the inability of welding power source expert data to adapt to changes was solved, thus improving the stability and quality of the welding process.
Patent Information
- Application Number
- CN202511234806.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-01
- Publication Date
- 2025-11-11
Smart Images
Figure CN120920862A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pulse welding technology, and in particular to a waveform adjustment method and system for droplet transfer in consumable electrode pulse welding. Background Technology
[0002] With the development of welding technology, gas metal arc welding (GMAW) is increasingly used in actual welding operations, and the technology is becoming more and more mature. Among related technologies, fully digital inverter welding power supplies are equipped with expert data before leaving the factory, based on the material of the workpiece to be welded, the diameter of the welding wire, and the type of shielding gas, thereby controlling the pulse current waveform for welding.
[0003] However, in related technologies, when the material, gas, wire diameter, or workpiece assembly form changes, the expert data provided may not be applicable, which may lead to problems such as large spatter, poor weld formation, unstable arc and serpentine welds during the welding process, affecting the stability of the welding process, reducing welding quality, and urgently needing improvement. Summary of the Invention
[0004] The purpose of this application is to overcome the shortcomings of the prior art and provide a waveform adjustment method and system for droplet transfer in consumable electrode pulse welding, so as to solve the problems in the related art, such as the welding process being unstable and affecting the welding effect because the expert data equipped with the welding power source cannot adapt to the changing welding conditions.
[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0006] In a first aspect, this application provides a waveform adjustment method for droplet transfer in consumable electrode pulse welding, comprising the following steps: obtaining pulse welding current parameters and generating a pulse welding current waveform based on the pulse welding current parameters, wherein the pulse welding current parameters include peak current, peak time, base current, and falling slope; determining a pulse welding voltage based on the pulse welding current parameters and loop resistance, and generating a pulse welding voltage waveform based on the pulse welding voltage, so as to determine a preset optimal droplet detachment area based on the pulse welding voltage waveform; predicting the droplet transfer time based on a preset droplet transfer model, comparing the droplet transfer time with the preset optimal droplet detachment area to obtain a timing comparison result, and adjusting the pulse welding current parameters based on the timing comparison result, so as to adjust the waveform of the pulse welding current based on the adjusted pulse welding current parameters.
[0007] Optionally, in one embodiment of this application, determining the preset optimal droplet detachment area based on the pulse welding voltage waveform includes: determining the pulse start point t0 and the preset detachment cutoff point t3 in the current cycle based on the pulse welding voltage waveform; setting the preset optimal droplet detachment area start point t1 at the end of the descent phase in the current cycle; setting the preset optimal droplet detachment area end point t2 at the beginning of the base phase in the current cycle; and determining the area between the preset optimal droplet detachment area start point t1 and the preset optimal droplet detachment area end point t2 as the preset optimal droplet detachment area.
[0008] Optionally, in one embodiment of this application, comparing the droplet transition time with the preset optimal droplet detachment area includes: when the droplet transition time is located within the preset optimal droplet detachment area of the current cycle, the timing comparison result is that the droplet transition is appropriate; when the droplet transition time is located between the preset detachment cutoff point t3 of the current cycle and the starting point t1 of the preset optimal droplet detachment area, the timing comparison result is that the droplet transition is earlier; when the droplet transition time is located between the ending point t2 of the preset optimal droplet detachment area of the current cycle and the preset detachment cutoff point t3 of the next cycle, the timing comparison result is that the droplet transition is later.
[0009] Optionally, in one embodiment of this application, adjusting the pulse welding current parameters according to the timing comparison result includes: when the timing comparison result indicates that droplet transition is earlier, adjusting the peak current, the peak time, and the descent slope to change the waveform of pulse welding droplet transition, wherein the waveform of pulse welding droplet transition includes: the pulse welding voltage waveform and the pulse welding current waveform; wherein the adjustment expressions for the peak current, the peak time, and the descent slope are:
[0010] ,
[0011] Among them, IPA adj This is the adjusted peak current; IPA std The standard peak current is preset in the expert data; Act_loc is the timing position of droplet detachment; KP1 is the adjustment coefficient of the peak current when the droplet transition is early; IPT adj This is the adjusted peak time; IPT std KP2 is the standard peak time preset in the expert data, which refers to the standard data preset for the welding power source according to different conditions; KP2 is the adjustment coefficient for the peak time when the droplet transfer is early; ISL_drop adj The adjusted descent slope, ILS_drop stdKP3 is the preset descent slope in the expert data, and KP3 is the adjustment coefficient for the descent slope.
[0012] Optionally, in one embodiment of this application, adjusting the pulse welding current parameters according to the timing comparison result further includes: when the timing comparison result indicates that the droplet transition is delayed, adjusting the peak current, the peak time, and the base current to change the waveform of the pulse welding droplet transition; wherein, the adjustment expressions for the peak current, the peak time, and the base current are:
[0013] ,
[0014] Wherein, KP4 is the adjustment coefficient for peak current when droplet transition is late; KP5 is the adjustment coefficient for peak time when droplet transition is late; IBA adj This is the adjusted base current; IBA std KP6 is the standard base current preset in the expert data; KP6 is the adjustment coefficient of the base current.
[0015] Optionally, in one embodiment of this application, after adjusting the pulse welding current parameters, the method further includes: calculating the average current in each cycle based on the adjusted pulse welding current parameters, and ensuring that the average current is consistent with the current preset on the welding equipment.
[0016] Secondly, this application provides a waveform adjustment system for droplet transfer in consumable electrode pulse welding, comprising: a parameter acquisition module for acquiring pulse welding current parameters and generating a pulse welding current waveform based on the pulse welding current parameters, wherein the pulse welding current parameters include peak current, peak time, base current, and falling slope; an optimal region determination module for determining a pulse welding voltage based on the pulse welding current parameters and loop resistance, and generating a pulse welding voltage waveform based on the pulse welding voltage, so as to determine a preset optimal droplet detachment region based on the pulse welding voltage waveform; and a waveform adjustment module for predicting the droplet transfer time based on a preset droplet transfer model, comparing the droplet transfer time with the preset optimal droplet detachment region to obtain a timing comparison result, and adjusting the pulse welding current parameters based on the timing comparison result, so as to adjust the waveform of the pulse welding current based on the adjusted pulse welding current parameters.
[0017] Thirdly, this application provides an electronic terminal, including a processor and a memory connected to the processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, it is used to implement the waveform adjustment method for droplet transfer in molten metal pulse welding as described above.
[0018] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is used to implement the waveform adjustment method for droplet transfer in molten metal pulse welding as described above.
[0019] Fifthly, this application provides a computer program product, including a computer program / instructions that, when executed by a processor, are used to implement the waveform adjustment method for droplet transfer in molten metal pulse welding as described above.
[0020] This application embodiment can obtain pulse welding current parameters and determine pulse welding voltage based on the pulse welding current parameters and loop resistance to generate pulse welding voltage waveform and pulse welding current waveform. Then, a preset optimal droplet detachment area can be determined based on the pulse welding voltage waveform, and the droplet transition time can be predicted based on the droplet transition model. This allows for comparison between the droplet transition time and the preset optimal droplet detachment area. The pulse welding current parameters can be adjusted based on the timing comparison results, so that the adjusted pulse welding current waveform effectively matches the current welding scenario, effectively ensuring that the droplet transition time is within the optimal area, which helps to improve welding stability and welding effect.
[0021] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0022] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:
[0023] Figure 1 This is a flowchart of a method for adjusting the waveform of droplet transfer in consumable electrode pulse welding according to an embodiment of this application;
[0024] Figure 2 This is a schematic diagram of the waveform of pulse welding voltage and current according to an embodiment of this application;
[0025] Figure 3 This is a schematic diagram of a welding control process according to an embodiment of this application;
[0026] Figure 4 This is a schematic diagram of the waveform adjustment system for droplet transfer in consumable electrode pulse welding according to an embodiment of this application. Detailed Implementation
[0027] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.
[0028] Example 1:
[0029] Figure 1 This is a schematic flowchart illustrating a method for adjusting the waveform of droplet transfer in consumable electrode pulse welding, as provided in an embodiment of this application.
[0030] like Figure 1 As shown, the waveform adjustment method for droplet transfer in consumable electrode pulse welding includes the following steps:
[0031] In step S101, pulse welding current parameters are obtained, and a pulse welding current waveform is generated based on the pulse welding current parameters. The pulse welding current parameters include peak current, peak time, base current, and descent slope.
[0032] In step S102, the pulse welding voltage is determined based on the pulse welding current parameters and the loop resistance, and a pulse welding voltage waveform diagram is generated based on the pulse welding voltage to determine the preset optimal droplet detachment area.
[0033] Optionally, in one embodiment of this application, determining the preset optimal droplet detachment area based on the pulse welding voltage waveform includes: determining the pulse start point t0 and the preset detachment cutoff point t3 in the current cycle based on the pulse welding voltage waveform; setting the preset optimal droplet detachment area start point t1 at the end of the descent phase in the current cycle; setting the preset optimal droplet detachment area end point t2 at the beginning of the base phase in the current cycle; and determining the area between the preset optimal droplet detachment area start point t1 and the preset optimal droplet detachment area end point t2 as the preset optimal droplet detachment area.
[0034] It is understood that, in the embodiments of this application, the point corresponding to the current of 150A in the current cycle can be determined as the preset optimal droplet detachment area starting point t1; the preset detachment cutoff point refers to the last position set in the next cycle for detachment if the droplet is not completely detached in the current cycle, so as not to affect the droplet formation in the next cycle.
[0035] Specifically, in combination Figure 2As shown, the red waveform at the top represents the voltage waveform, and the blue waveform at the bottom represents the current waveform. Based on the different stages of pulse generation, it can be divided into four phases: the rising phase (Pls_rise) generates a bright current that rapidly increases in value; the peak phase (Pls_peak) melts the welding wire to form a droplet, the size of which is determined by the peak phase; then it enters the falling phase (Pls_drop); in the falling phase, the droplet gradually separates from the welding wire until it necks and falls off; finally, it enters the base phase (Pls_base); the base phase continuously preheats the welding wire, providing heat for the generation of the next pulse droplet.
[0036] Furthermore, the main current parameters determining droplet size and detachment include peak current, peak time, base current, and descent slope. A good pulse welding state is one droplet generated per pulse, with the droplet detaching at a favorable location. During the rising and peak phases, the droplet gradually grows. During the descent phase, as gravity and electromagnetic force increase, the droplet gradually detaches from the welding wire. The pulse current should be kept as small as possible during detachment, generally below 150A. t1 can be considered at a current of around 150A. The base current is very small, serving to maintain the arc and heat the welding wire. Generally, the last position of t2 is considered to be at the beginning of the first 1 / 3 of the base current phase. If detachment is not complete in this cycle, to avoid affecting droplet formation in the next cycle, the last position of t3 is at the beginning of the second pulse cycle. In this embodiment, the region from t1 to t2 is defined as the preset optimal droplet detachment region.
[0037] This application embodiment obtains pulse welding current parameters and pulse welding voltage and corresponding waveform diagrams, which helps to provide an information basis for subsequent judgment of actual droplet detachment and can improve the efficiency and accuracy of waveform adjustment.
[0038] In step S103, the droplet transition time is predicted according to the preset droplet transition model, and the droplet transition time is compared with the preset optimal droplet detachment area to obtain the timing comparison result. The pulse welding current parameters are adjusted according to the timing comparison result, and the waveform of the pulse welding current is adjusted according to the adjusted pulse welding current parameters.
[0039] Understandably, the preset droplet transition model refers to a model used to predict the droplet transition time. It can be generated by collecting multiple sets of pulse welding current and voltage parameters, as well as the specific droplet transition time captured by a high-speed camera under these parameters, and then using a deep learning algorithm with a long short-term memory network.
[0040] Optionally, in one embodiment of this application, the droplet transition time is compared with a preset optimal droplet detachment area, including: when the droplet transition time is located within the preset optimal droplet detachment area of the current cycle, the timing comparison result is that the droplet transition is appropriate; when the droplet transition time is located between the preset detachment cutoff point t3 of the current cycle and the starting point t1 of the preset optimal droplet detachment area, the timing comparison result is that the droplet transition is earlier; when the droplet transition time is located between the ending point t2 of the preset optimal droplet detachment area of the current cycle and the preset detachment cutoff point t3 of the next cycle, the timing comparison result is that the droplet transition is later.
[0041] Optionally, in one embodiment of this application, adjusting the pulse welding current parameters based on the timing comparison result includes: when the timing comparison result indicates that droplet transition is earlier, adjusting the peak current, peak time, and descent slope to change the waveform of the pulse welding droplet transition, wherein the waveform of the pulse welding droplet transition includes: a pulse welding voltage waveform and a pulse welding current waveform; wherein the adjustment expressions for the peak current, peak time, and descent slope are:
[0042] ,
[0043] Among them, IPA adj This is the adjusted peak current; IPA std The standard peak current is preset in the expert data; Act_loc is the timing position of droplet detachment; KP1 is the adjustment coefficient of the peak current when the droplet transition is early; IPT adj This is the adjusted peak time; IPT std KP2 is the standard peak time preset in the expert data, which refers to the standard data preset for the welding power source according to different conditions; KP2 is the adjustment coefficient for the peak time when the droplet transfer is early; ISL_drop adj The adjusted descent slope, ILS_drop std KP3 is the preset descent slope in the expert data, and KP3 is the adjustment coefficient for the descent slope.
[0044] Optionally, in one embodiment of this application, adjusting the pulse welding current parameters based on the timing comparison result further includes: when the timing comparison result indicates that the droplet transition is delayed, adjusting the peak current, peak time, and base current to change the waveform of the pulse welding droplet transition; wherein, the adjustment expressions for the peak current, peak time, and base current are:
[0045] ,
[0046] Wherein, KP4 is the adjustment coefficient for peak current when droplet transition is late; KP5 is the adjustment coefficient for peak time when droplet transition is late; IBA adjThis is the adjusted base current; IBA std KP6 is the standard base current preset in the expert data; KP6 is the adjustment coefficient of the base current.
[0047] In actual implementation, combined with Figure 3 As shown, the specific steps for welding control in this embodiment of the application can be as follows:
[0048] Step S301: Set the pulse welding current. The pulse welding current refers to the current preset on the welding equipment.
[0049] Step S302: Determine the pulse welding current parameters based on the pulse welding current.
[0050] Step S303: Load the predicted voltage model. A pulse voltage is automatically generated based on the pulse current parameters and loop resistance. The generated multiple sets of pulse voltages are then trained to obtain the predicted voltage model; this model is used to predict the pulse voltage.
[0051] Step S304: Load the droplet transfer model. The droplet transfer model can be obtained by collecting multiple sets of pulse welding current and voltage parameters, as well as the specific droplet transfer moments captured by a high-speed camera under these parameters, and then training the model.
[0052] Step S305: The droplet transition time is predicted using the droplet transition model.
[0053] Step S306: Adjust the waveform parameters by determining whether the droplet transition time is appropriate.
[0054] Specifically, in the embodiments of this application, waveform parameters can be adjusted by determining whether the droplet transition time is appropriate.
[0055] If the detachment location is between t1 and t2, it is considered that the detachment is appropriate and the waveform parameters do not need to be adjusted. The detachment location can be understood as the droplet transition time.
[0056] If the droplet falls off between t3 and t1 in this cycle, it is considered to have fallen off earlier. At this time, the pulse energy is larger, and the resulting droplet is also larger. To adjust to a suitable range, a smaller pulse energy is needed. This can be achieved by reducing the peak current and peak time, and appropriately increasing the descent slope to allow the droplet to separate quickly from the welding wire. The waveform adjustment can be referenced by the following adjustment formula:
[0057] ,
[0058] Among them, IPA adj This is the adjusted peak current; IPA stdThe standard peak current is preset in the expert data; Act_loc is the timing position of droplet detachment; KP1 is the adjustment coefficient of the peak current when the droplet transition is early; IPT adj This is the adjusted peak time; IPT std KP2 is the standard peak time preset in the expert data, which refers to the standard data preset for the welding power source according to different conditions; KP2 is the adjustment coefficient for the peak time when the droplet transfer is early; ISL_drop adj The adjusted descent slope, ILS_drop std KP3 is the preset descent slope in the expert data, and KP3 is the adjustment coefficient for the descent slope.
[0059] If the droplet falls off between t2 of the current cycle and t3 of the next cycle, the droplet will fall off later, which usually results in insufficient pulse energy and a smaller droplet. This may lead to insufficient wire filler, an incomplete weld, or multiple pulses forming a single droplet. The adjustment should be made by increasing the peak current and peak time, and increasing the base current to improve the preheating energy of the wire. The waveform adjustment can be referenced by the following adjustment formula:
[0060] ,
[0061] Wherein, KP4 is the adjustment coefficient for peak current when droplet transition is late; KP5 is the adjustment coefficient for peak time when droplet transition is late; IBA adj This is the adjusted base current; IBA std KP6 is the standard base current preset in the expert data; KP6 is the adjustment coefficient of the base current.
[0062] It should be noted that after adjusting the waveform parameters using the above methods, the periodic average current should be kept consistent with the value of the current preset on the welding equipment.
[0063] The waveform adjustment method for droplet transfer in pulsed welding according to the embodiments of this application can acquire pulsed welding current parameters and determine the pulsed welding voltage based on the pulsed welding current parameters and loop resistance to generate pulsed welding voltage waveforms and pulsed welding current waveforms. Furthermore, a preset optimal droplet detachment area can be determined based on the pulsed welding voltage waveform, and the droplet transfer time can be predicted based on the droplet transfer model. This allows for comparison between the droplet transfer time and the preset optimal droplet detachment area, and adjustment of the pulsed welding current parameters based on the timing comparison results. The adjusted pulsed welding current waveform effectively matches the current welding scenario, ensuring that the droplet transfer time is within the optimal area, thus improving welding stability and welding effect. This solves the problem in related technologies where the expert data provided by the welding power source cannot adapt to changing welding conditions, potentially leading to welding instability and affecting welding results.
[0064] Example 2:
[0065] Next, referring to the accompanying drawings, a waveform adjustment system for droplet transfer in consumable electrode pulse welding according to an embodiment of this application is described.
[0066] Figure 4 This is a schematic diagram of the waveform adjustment system for droplet transfer in consumable electrode pulse welding according to an embodiment of this application.
[0067] like Figure 4 As shown, the waveform adjustment system 10 for droplet transfer in molten electrode pulse welding includes: a parameter acquisition module 100, an optimal region determination module 200, and a waveform adjustment module 300.
[0068] Specifically, the parameter acquisition module 100 is used to acquire pulse welding current parameters and generate a pulse welding current waveform based on the pulse welding current parameters. The pulse welding current parameters include peak current, peak time, base current and falling slope.
[0069] The optimal area determination module 200 is used to determine the pulse welding voltage based on the pulse welding current parameters and the loop resistance, and to generate a pulse welding voltage waveform based on the pulse welding voltage, so as to determine the preset optimal droplet detachment area based on the pulse welding voltage waveform.
[0070] The waveform adjustment module 300 is used to predict the droplet transition time according to the preset droplet transition model, compare the droplet transition time with the preset optimal droplet detachment area to obtain the timing comparison result, and adjust the pulse welding current parameters according to the timing comparison result, so as to adjust the waveform of the pulse welding current according to the adjusted pulse welding current parameters.
[0071] It should be noted that the explanation of the waveform adjustment method for droplet transition in consumable electrode pulse welding described above also applies to the waveform adjustment system for droplet transition in consumable electrode pulse welding in this embodiment, and will not be repeated here.
[0072] The waveform adjustment system for droplet transfer in pulsed welding according to the embodiments of this application can acquire pulsed welding current parameters and determine the pulsed welding voltage based on the pulsed welding current parameters and loop resistance to generate pulsed welding voltage waveforms and pulsed welding current waveforms. Furthermore, a preset optimal droplet detachment area can be determined based on the pulsed welding voltage waveform, and the droplet transfer time can be predicted based on the droplet transfer model. This allows for comparison between the droplet transfer time and the preset optimal droplet detachment area, and adjustment of the pulsed welding current parameters based on the timing comparison results. The adjusted pulsed welding current waveform effectively matches the current welding scenario, ensuring that the droplet transfer time is within the optimal area, thus improving welding stability and welding effect. This solves the problem in related technologies where the expert data provided by the welding power source cannot adapt to changing welding conditions, potentially leading to unstable welding processes and affecting welding results.
[0073] Example 3:
[0074] This invention also provides an electronic terminal, including a processor and a memory connected to the processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the waveform adjustment method for droplet transition in molten metal pulse welding as described in Embodiment 1 are executed.
[0075] Example 4:
[0076] This embodiment provides a computer-readable storage medium storing a computer program / instruction thereon. When the computer program / instruction is executed by a processor, it implements the steps of the waveform adjustment method for droplet transfer in molten metal pulse welding as described in any of the embodiments.
[0077] Example 5:
[0078] This embodiment provides a computer program product, including a computer program / instruction, characterized in that, when the computer program / instruction is executed by a processor, it implements the steps of the waveform adjustment method for droplet transfer in consumable electrode pulse welding as described in any one of Embodiment 1.
[0079] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0080] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0081] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0082] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0083] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A method for adjusting the waveform of droplet transfer in consumable electrode pulse welding, characterized in that, The method includes the following steps: The pulse welding current parameters are obtained, and a pulse welding current waveform is generated based on the pulse welding current parameters, wherein the pulse welding current parameters include peak current, peak time, base current and falling slope; The pulse welding voltage is determined based on the pulse welding current parameters and the loop resistance, and a pulse welding voltage waveform is generated based on the pulse welding voltage to determine the preset optimal droplet detachment area based on the pulse welding voltage waveform. The droplet transition time is predicted according to the preset droplet transition model. The droplet transition time is compared with the preset optimal droplet detachment area to obtain the timing comparison result. The pulse welding current parameters are adjusted according to the timing comparison result, and the waveform of the pulse welding current is adjusted according to the adjusted pulse welding current parameters.
2. The waveform adjustment method for droplet transfer in consumable electrode pulse welding according to claim 1, characterized in that, The step of determining the preset optimal droplet detachment area based on the pulse welding voltage waveform includes: The pulse start point t0 and the preset detachment cutoff point t3 in the current cycle are determined based on the pulse welding voltage waveform diagram. Set the preset optimal droplet shedding region starting point t1 at the latter 2 / 3 of the current cycle's descent phase; In the current cycle, a preset optimal droplet shedding region endpoint t2 is set at the first 1 / 3 of the base value stage, and the region between the preset optimal droplet shedding region starting point t1 and the preset optimal droplet shedding region endpoint t2 is determined as the preset optimal droplet shedding region.
3. The waveform adjustment method for droplet transfer in consumable electrode pulse welding according to claim 2, characterized in that, The comparison of the droplet transition time with the preset optimal droplet detachment area includes: When the droplet transition time is located in the preset optimal droplet detachment area of the current cycle, the timing comparison result is that the droplet transition is appropriate; When the droplet transition time is located between the preset droplet termination point t3 of the current cycle and the preset optimal droplet droplet detachment area start point t1, the timing comparison result is that the droplet transition is earlier. When the droplet transition time is between the preset optimal droplet shedding region endpoint t2 of the current cycle and the preset shedding cutoff point t3 of the next cycle, the timing comparison result is that the droplet transition is delayed.
4. The waveform adjustment method for droplet transfer in consumable electrode pulse welding according to claim 3, characterized in that, The step of adjusting the pulse welding current parameters based on the timing comparison results includes: When the timing comparison result indicates that the droplet transition is earlier, the peak current, the peak time, and the descent slope are adjusted to change the waveform of the pulse welding droplet transition. The waveform of the pulse welding droplet transition includes the pulse welding voltage waveform and the pulse welding current waveform. The adjustment expressions for the peak current, the peak time, and the descent slope are as follows: ， Among them, IPA adj This is the adjusted peak current; IPA std The standard peak current is preset in the expert data; Act_loc is the timing position of droplet detachment; KP1 is the adjustment coefficient of the peak current when the droplet transition is early; IPT adj This is the adjusted peak time; IPT std KP2 is the standard peak time preset in the expert data, which refers to the standard data preset for the welding power source according to different conditions; KP2 is the adjustment coefficient for the peak time when the droplet transfer is early; ISL_drop adj The adjusted descent slope, ILS_drop std KP3 is the preset descent slope in the expert data, and KP3 is the adjustment coefficient for the descent slope.
5. The waveform adjustment method for droplet transfer in consumable electrode pulse welding according to claim 3, characterized in that, The step of adjusting the pulse welding current parameters based on the timing comparison result further includes: When the timing comparison result indicates that the droplet transition is delayed, the peak current, the peak time, and the base current are adjusted to change the waveform of the pulse welding droplet transition. The adjustment expressions for the peak current, the peak time, and the base current are as follows: ， Wherein, KP4 is the adjustment coefficient for peak current when droplet transition is late; KP5 is the adjustment coefficient for peak time when droplet transition is late; IBA adj This is the adjusted base current; IBA std KP6 is the standard base current preset in the expert data; KP6 is the adjustment coefficient of the base current.
6. The waveform adjustment method for droplet transfer in consumable electrode pulse welding according to claim 1, characterized in that, After adjusting the pulse welding current parameters, the method further includes: calculating the average current in each cycle based on the adjusted pulse welding current parameters, and ensuring that the average current is consistent with the current preset on the welding equipment.
7. A waveform adjustment system for droplet transfer in consumable electrode pulse welding, characterized in that, The system includes: Parameter acquisition module: used to acquire pulse welding current parameters and generate pulse welding current waveform based on the pulse welding current parameters, wherein the pulse welding current parameters include peak current, peak time, base current and falling slope; Optimal area determination module: used to determine the pulse welding voltage based on the pulse welding current parameters and the loop resistance, and generate a pulse welding voltage waveform based on the pulse welding voltage, so as to determine the preset optimal droplet detachment area based on the pulse welding voltage waveform; Waveform adjustment module: used to predict the droplet transition time according to the preset droplet transition model, compare the droplet transition time with the preset optimal droplet detachment area to obtain the timing comparison result, and adjust the pulse welding current parameters according to the timing comparison result, so as to adjust the waveform of the pulse welding current according to the adjusted pulse welding current parameters.
8. An electronic terminal, characterized in that, The system includes a processor and a memory connected to the processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the steps of the waveform adjustment method for droplet transfer in molten metal pulse welding as described in any one of claims 1 to 6 are performed.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the waveform adjustment method for droplet transfer in molten electrode pulse welding as described in any one of claims 1 to 6.
10. A computer program product, comprising a computer program / instructions, characterized in that, When the computer program / instruction is executed by the processor, it implements the steps of the waveform adjustment method for droplet transfer in molten electrode pulse welding as described in any one of claims 1 to 6.