Welding control method and apparatus

Abstract

The invention discloses a welding control method and equipment. The method comprises the steps that in the process of tailor-welding a first welding plate and a second welding plate, target weld joint parameters are detected, the target weld joint parameters comprise the weld joint surplus height of the previous tailor-welding position and / or the weld joint gap of the next tailor-welding position, and the weld joint surplus height of the first welding plate and the weld joint gap of the next tailor-welding position are detected in the length direction of weld joints of the first welding plate and the second welding plate; the front tailor-welding position and the rear tailor-welding position are adjacent to each other; according to a preset corresponding relation, target welding parameters corresponding to the target welding seam parameters are determined, and the target welding parameters comprise the target welding speed and / or the target wire feeding speed; and according to the target welding parameters, the welding execution structure is controlled to conduct tailor-welding at the next tailor-welding position. The welding seam uniformity can be improved, the welding seam quality is guaranteed, and the product yield is improved.

Description

Technical Field

[0001] This application belongs to the field of welding technology, and particularly relates to a welding control method and device. Background Art

[0002] Tailor-welded blanks can weld sheets with different thicknesses and strengths together and form product parts through hot stamping, so they are widely used in various fields, such as the automotive field.

[0003] During tailor-welded butt welding, it is difficult to make the edges of the butt surfaces of the two sheets completely straight or smooth, so it is difficult to ensure the consistency of the weld quality, which may lead to poor quality of the tailor-welded blank. Summary of the Invention

[0004] Embodiments of the present application provide a welding control method and device, which can at least improve the weld uniformity to a certain extent, ensure the weld quality, and improve the product yield rate.

[0005] Other features and advantages of the present application will become apparent through the following detailed description, or be learned partially through the practice of the present application.

[0006] According to the first aspect of the embodiments of the present application, a welding control method is provided, and the method includes:

[0007] During the process of butt welding a first welding plate and a second welding plate, detect target weld parameters, where the target weld parameters include: the weld reinforcement at the previous butt-welding position and / or the weld gap at the next butt-welding position. In the length direction of the weld of the first welding plate and the second welding plate, the previous butt-welding position and the next butt-welding position are adjacent positions to each other;

[0008] Determine target welding parameters corresponding to the target weld parameters according to a preset corresponding relationship, where the target welding parameters include: target welding speed and / or target wire feeding speed;

[0009] Control a welding execution structure to perform butt welding at the next butt-welding position according to the target welding parameters.

[0010] Optionally, the corresponding relationship includes a first corresponding relationship. The step of determining target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes:

[0011] Determine the welding speed and / or wire feeding speed corresponding to the weld reinforcement according to the first corresponding relationship, where there is a positive correlation between the weld reinforcement and the target welding speed, and a negative correlation between the weld reinforcement and the target wire feeding speed.

[0012] Optionally, determine the first corresponding relationship based on formula (1) and / or formula (2) as follows:

[0013]

[0014] wherein, v1 represents the target welding speed, n1 represents the first correction coefficient, v0 represents the preset initial welding speed, h represents the weld reinforcement detected at the previous welding position, and h0 represents the preset target weld reinforcement; and / or

[0015]

[0016] wherein, ω1 represents the target wire feeding speed, n2 represents the second correction coefficient, and ω0 represents the preset initial wire feeding speed.

[0017] Optionally, the corresponding relationship includes a second corresponding relationship. Determining the target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes:

[0018] Determine the welding speed and / or wire feeding speed corresponding to the weld gap according to the second corresponding relationship, wherein there is a negative correlation between the weld gap and the target welding speed, and a positive correlation between the weld gap and the target wire feeding speed.

[0019] Optionally, determine the second corresponding relationship based on formula (3) and / or formula (4) as follows:

[0020]

[0021] wherein, v1 represents the target welding speed, n3 represents the third correction coefficient, v0 represents the preset initial welding speed, J0 represents the preset target weld gap, and J represents the weld gap detected at the subsequent welding position; and / or

[0022]

[0023] wherein, ω1 represents the target wire feeding speed, n4 represents the fourth correction coefficient, and ω0 represents the preset initial wire feeding speed.

[0024] Optionally, after controlling the welding execution structure to perform welding at the subsequent welding position according to the target welding parameters, the method further includes:

[0025] When the welded blank is placed in the hot stamping die, process the welded blank based on the hot stamping process;

[0026] Wherein, the tailor-welded blank is the first welded plate and the second welded plate after welding, and the hot stamping die is provided with a plurality of cooling water channels for cooling the tailor-welded blank after hot stamping.

[0027] Optionally, there is a negative correlation between the cooling rate of the cooling water channel for the tailor-welded blank and the target parameter of the cooling water channel, and the target parameter is the target minimum distance between the outer edge of the cooling water channel and the surface of the hot stamping die;

[0028] The target minimum distance is determined based on the following steps:

[0029] Acquisition step: Conduct a hot stamping simulation test on the hot stamping die. After the test is completed, obtain the temperature of each die surface area corresponding to each cooling water channel, as well as the temperature difference and temperature ratio between each die surface area temperature and the average die surface temperature;

[0030] Adjustment step: For each cooling water channel, within the preset minimum distance range, on the basis of the initial minimum distance, adjust the minimum distance according to the temperature ratio, and then execute the acquisition step again after the minimum distance of each cooling water channel is adjusted;

[0031] Determination step: Repeat the acquisition step and the adjustment step until the average die surface temperature is less than or equal to the preset temperature, and the maximum temperature difference between each die surface area temperature is less than or equal to the preset temperature difference. Take the minimum distance of each cooling water channel at that time as their respective target minimum distances.

[0032] Optionally, the adjustment of the minimum distance according to the temperature ratio includes:

[0033] Adjust the minimum distance according to the temperature ratio based on the following formula (5):

[0034] h2 = h1×(1 - B); (5)

[0035] Wherein, h2 represents the adjusted minimum distance, h1 represents the minimum distance before adjustment, and B represents the temperature ratio.

[0036] Optionally, the preset minimum distance range is: 2mm - 15mm, the value of the preset temperature is 200 degrees Celsius, and the value of the preset temperature difference is 30 degrees Celsius.

[0037] According to a second aspect of the embodiments of the present application, an electronic device is provided, including one or more processors and one or more memories. At least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the method according to any one of the first aspects.

[0038] According to a third aspect of the embodiments of the present application, a computer-readable storage medium is provided. At least one computer program instruction is stored in the computer-readable storage medium, and the at least one computer program instruction is loaded and executed by a processor to implement the operations performed by the method according to any one of the first aspects.

[0039] One or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:

[0040] In the welding control method of the present application, during the butt welding of the first welding plate and the second welding plate, the target weld parameters are detected. The target weld parameters include: the weld reinforcement at the previous butt welding position and / or the weld gap at the next butt welding position. In the length direction of the weld of the first welding plate and the second welding plate, the previous butt welding position and the next butt welding position are adjacent positions to each other. According to the preset corresponding relationship, the target welding parameters corresponding to the target weld parameters are determined. The target welding parameters include: the target welding speed and / or the target wire feeding speed. According to the target welding parameters, the welding execution structure is controlled to perform butt welding at the next butt welding position. Thus, during the butt welding of two welding plates in the embodiments of the present application, the target welding parameters at the next butt welding position are adjusted in real time according to the target weld parameters, improving the weld uniformity, ensuring the weld quality, and increasing the product yield.

[0041] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0043] Figure 1 The flowchart of the welding control method according to the embodiments of the present application is shown;

[0044] Figure 2 The partial cross-sectional structural schematic diagram of the hot stamping die according to the embodiments of the present application is shown;

[0045] Figure 3 The figure shows a schematic structural diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0047] In addition, the described features, structures or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, many specific details are provided to give a full understanding of the embodiments of the present application. However, those skilled in the art will realize that the technical solutions of the present application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations or operations are not shown or described in detail to avoid obscuring various aspects of the present application.

[0048] The block diagrams shown in the drawings are only functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different models and / or processor devices and / or microcontroller devices.

[0049] The flowcharts shown in the drawings are only exemplary descriptions and do not necessarily include all the contents and operations / steps, nor do they necessarily have to be executed in the described order. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined. Therefore, the actual execution order may be changed according to the actual situation.

[0050] It should also be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the objects so used can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described.

[0051] Tailor-welded blanks can weld sheet materials with different thicknesses and strengths together and form product parts through hot stamping. The parts have excellent lightweight and crashworthiness effects and are thus widely used in various fields, such as the automotive field.

[0052] In the traditional laser wire filling welding process, the stability of welding quality plays an important role. How to improve the welding quality and ensure the consistency of the performance of the welded joint is of great significance for improving the product yield.

[0053] Generally, before welding, blanking needs to be carried out first, and then the sheet metal is installed on the fixture. The existing blanking processes include mechanical blanking and laser blanking. After blanking, there are easily shear defects on the sheared edge, such as the sheared edge is not smooth enough or not fair, which will cause the reinforcement height of the weld seam to change during welding, and further make it difficult to ensure the consistency of the quality of the welded joint. Therefore, in some process flows, before welding two sheet metals together, the splicing edge of the sheet metal will be sheared again to improve the fairness of the splicing edge. In addition, due to the unevenness of the splicing edge during blanking, it is difficult to ensure the consistency of the weld reinforcement height and the performance of the welded joint even if the welding parameters are constant.

[0054] In view of this, the embodiments of the present application provide a welding control method, which can improve the weld seam uniformity to a certain extent, ensure the weld seam quality, and improve the product yield.

[0055] See Figure 1 , which shows the flow chart of the welding control method of the embodiments of the present application.

[0056] As Figure 1 shown, according to the first aspect of the embodiments of the present application, a welding control method is provided. The method can be executed on a controller of a welding process, such as an industrial computer arranged at the welding process site. The method includes but is not limited to being implemented by steps S1 - step S3:

[0057] Step S1. During the process of welding the first welding plate and the second welding plate together, detect the target weld seam parameters, where the target weld seam parameters include: the reinforcement height of the previous welding position and / or the weld gap of the next welding position. In the length direction of the weld seam of the first welding plate and the second welding plate, the previous welding position and the next welding position are adjacent positions to each other;

[0058] It can be understood that before welding the first welding plate and the second welding plate together, blanking needs to be carried out first, such as using mechanical blanking or laser blanking, and then the two welding plates are installed on the fixture, and the splicing edges of the two welding plates are made as smooth as possible to ensure the subsequent welding quality.

[0059] It should be noted that, taking the laser wire filling welding process as an example, during the butt welding process of two welding plates, the welding actuator (such as a laser welding machine) irradiates the welding material filled in the weld along the length direction of the weld. The welding material forms a molten pool, and after the molten pool solidifies, a welded joint is formed. Based on this, the previous butt welding position in the embodiment of the present application may refer to the position where the molten pool solidifies latest (i.e., the position that just solidifies during detection).

[0060] It can be understood that by detecting the weld reinforcement of the previous butt welding position and adjusting the welding speed and / or wire feeding speed of the next butt welding position, it is possible to avoid the weld reinforcement of the next butt welding position being too large or too small, so as to ensure the consistency of the welded joint.

[0061] In addition, by detecting the weld gap of the next butt welding position, for example, detecting the gap value of the butt welding plates before the welding molten pool through detection devices such as optical devices or radars, and then adjusting the splicing speed and / or wire feeding speed of the next butt welding position, it is also possible to avoid the weld reinforcement of the next butt welding position being too large or too small, so as to ensure the consistency of the welded joint.

[0062] Step S2. Determine the target welding parameters corresponding to the target weld parameters according to a preset corresponding relationship, where the target welding parameters include: target welding speed and / or target wire feeding speed;

[0063] In some embodiments, the corresponding relationship includes a first corresponding relationship. The step of determining the target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes:

[0064] According to the first corresponding relationship, determine the welding speed and / or wire feeding speed corresponding to the weld reinforcement, where there is a positive correlation between the weld reinforcement and the target welding speed, and a negative correlation between the weld reinforcement and the target wire feeding speed.

[0065] For example: when the weld reinforcement at the previous butt welding position exceeds the preset weld reinforcement range (which may vary according to different sheet materials, for example, it may be less than or equal to 3 mm), the greater the weld reinforcement, the greater the target welding speed. As the welding speed increases, the amount of welding material entering the weld per unit time decreases, thereby reducing the weld reinforcement at the next position to ensure the consistency of the welded joint. Conversely, when the weld reinforcement at the previous butt welding position is lower than the preset weld reinforcement range, the smaller the weld reinforcement, the smaller the target welding speed. As the welding speed decreases, the amount of welding material entering the weld per unit time increases, thereby increasing the weld reinforcement at the next position to ensure the consistency of the welded joint.

[0066] For example, when the weld reinforcement at the previous welding position exceeds the preset reinforcement range, the greater the weld reinforcement, the smaller the target wire feeding speed. As the wire feeding speed decreases, the amount of welding material entering the weld per unit time decreases, thereby reducing the weld reinforcement at the subsequent position to ensure the consistency of the welded joint. Conversely, when the weld reinforcement at the previous welding position is lower than the preset reinforcement range, the smaller the weld reinforcement, the greater the target wire feeding speed. As the wire feeding speed increases, the amount of welding material entering the weld per unit time increases, thereby increasing the weld reinforcement at the subsequent position to ensure the consistency of the welded joint.

[0067] In some embodiments, the first corresponding relationship is determined based on the following formula (1) and / or formula (2):

[0068]

[0069] wherein, v1 represents the target welding speed, n1 represents the first correction coefficient, v0 represents the preset initial welding speed, h represents the weld reinforcement detected at the previous welding position, and h0 represents the preset target weld reinforcement; and / or

[0070]

[0071] wherein, ω1 represents the target wire feeding speed, n2 represents the second correction coefficient, and ω0 represents the preset initial wire feeding speed.

[0072] For example: During the welding process, it is detected that the height of the weld reinforcement h after the solidification of the welding molten pool is 20%, and the actual required height of the weld reinforcement h0 is 14%. At this time, the initial welding speed v0 is 3 m / min, and the first correction coefficient is set to 1. After calculation by formula (1), the target welding speed v1 is 4.3 m / min. Then, the welding speed at the subsequent welding position operates at 4.3 m / min. It can be understood that as the welding speed increases, the weld reinforcement will decrease, and subsequent adjustment of the welding speed may be required.

[0073] For example: During the welding process, it is detected that the height of the weld reinforcement h after the solidification of the welding molten pool is 20%, and the actual required height of the weld reinforcement h0 is 14%. At this time, the initial wire feeding speed ω0 is 2 m / min, and the second correction coefficient is set to 1. After calculation by formula (2), the target wire feeding speed ω1 is 1.4 m / min. Then, the wire feeding speed at the subsequent welding position is 1.4 m / min. It can be understood that as the wire feeding speed decreases, the weld reinforcement will decrease, and subsequent adjustment of the wire feeding speed may be required.

[0074] Step S3. Control the welding execution structure to perform butt welding at the subsequent welding position according to the target welding parameters.

[0075] In some embodiments, the corresponding relationship includes a second corresponding relationship. Determining the target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes:

[0076] Determining the welding speed and / or wire feeding speed corresponding to the weld gap according to the second corresponding relationship, wherein there is a negative correlation between the weld gap and the target welding speed, and a positive correlation between the weld gap and the target wire feeding speed.

[0077] For example: the larger the weld gap at the subsequent butt welding position, the smaller the target welding speed. As the welding speed decreases, the amount of welding material entering the weld per unit time decreases, thereby reducing the weld reinforcement at the subsequent position to ensure the consistency of the welded joint. Conversely, the smaller the weld gap at the subsequent butt welding position, the larger the target welding speed. As the welding speed increases, the amount of welding material entering the weld per unit time increases, thereby increasing the weld reinforcement at the subsequent butt welding position.

[0078] For example: the larger the weld gap at the subsequent butt welding position, the larger the target wire feeding speed. As the wire feeding speed increases, the amount of welding material entering the weld per unit time increases, thereby increasing the weld reinforcement at the subsequent position to ensure the consistency of the welded joint. Conversely, the smaller the weld gap at the subsequent butt welding position, the smaller the target wire feeding speed. As the wire feeding speed decreases, the amount of welding material entering the weld per unit time decreases, thereby reducing the weld reinforcement at the subsequent butt welding position.

[0079] In some embodiments, the second corresponding relationship is determined based on the following formula (3) and / or formula (4):

[0080]

[0081] wherein, v1 represents the target welding speed, n3 represents the third correction coefficient, v0 represents the preset initial welding speed, J0 represents the preset target weld gap, and J represents the weld gap detected at the subsequent butt welding position; and / or

[0082]

[0083] wherein, ω1 represents the target wire feeding speed, n4 represents the fourth correction coefficient, and ω0 represents the preset initial wire feeding speed.

[0084] For example, during the welding process, it is detected that the gap value between the two welding plates to be welded in front of the welding molten pool is 0.21 mm, and the actually set gap value between the two patchwork welding plates is 0.2 mm. At this time, the initial welding speed v0 is 3 m / min, the third correction coefficient is set to 1, and after calculation by formula (3), the target welding speed v1 is 2.86 m / min. Subsequently, it is set that when welding reaches the 0.21 mm gap position, the welding speed is 2.86 m / min. As the welding speed decreases, more wire will be filled into the gap, thereby avoiding too low reinforcement height and ensuring the uniformity of the reinforcement height and weld quality.

[0085] For example, during the welding process, it is detected that the gap value between the two welding plates to be welded in front of the welding molten pool is 0.21 mm, and the actually set gap value between the two welding plates is 0.2 mm. At this time, the wire feeding speed ω0 is 2 m / min, the fourth correction coefficient is set to 1, and after calculation by formula (4), the target wire feeding speed ω1 is 2.1 m / min. Subsequently, it is set that when welding reaches the 0.21 mm gap position, the wire feeding speed is 2.1 m / min. As the wire feeding speed increases, more wire will be filled into the gap, thereby avoiding too low reinforcement height and ensuring the uniformity of the reinforcement height and weld quality.

[0086] See Figure 2 , which shows a partial cross-sectional structural schematic diagram of the hot stamping die according to the embodiment of the present application.

[0087] In some embodiments, after controlling the welding execution structure to perform patchwork welding at the subsequent patchwork position according to the target welding parameters, the method further includes:

[0088] In the case where the patchwork plate is placed in the hot stamping die 1, the patchwork plate is processed based on the hot stamping process; wherein, the patchwork plate is the first welding plate and the second welding plate that have been patchwork welded, and the hot stamping die 1 is provided with a plurality of cooling water channels 2, and the cooling water channels 2 are used to cool the patchwork plate after hot stamping.

[0089] During the hot forming process, the hot stamping die 1 undertakes the task of cooling and quenching the high-temperature sheet metal. Arranging the cooling water channels 2 inside the hot stamping die 1 is an effective means to achieve this function. The hot stamping die 1 is usually designed with an insert structure, and the cooling water channels 2 are arranged inside the inserts. The inserts are fixed on the water distribution plate in the structural order, and water is supplied to each insert separately by the water distribution plate, and each insert forms an independent cooling circulation system. The cooling water channels 2 inside the inserts can adopt conformal water channels.

[0090] In some embodiments, there is a negative correlation between the cooling rate of the cooling water channel 2 for the tailor-welded blank and the target parameter of the cooling water channel 2, and the target parameter is the target minimum distance H between the outer edge of the cooling water channel 2 and the surface of the hot stamping die 1.

[0091] It can be understood that each cooling water channel 2 is arranged inside the hot stamping die 1, and the specific position of the cooling water channel 2 directly affects the cooling capacity of the die, and further affects the cooling capacity of the hot stamping parts in the die. The cooling water channel in the embodiment of the present application can be a conformal water channel, for example, arranged along the length direction of the die. The minimum distance between the outer diameter edge (outer edge) of the cooling water channel and the hot stamping die 1 is H. The smaller H is, the higher the cooling rate is, and the larger H is, the lower the cooling rate is.

[0092] In some embodiments, the target minimum distance is determined based on the following steps:

[0093] Acquisition step: Perform a hot stamping simulation test on the hot stamping die. After the test is completed, obtain the temperature of each die surface area corresponding to each cooling water channel, as well as the temperature difference and temperature ratio between each die surface area temperature and the average die surface temperature;

[0094] Adjustment step: For each cooling water channel, within the preset minimum distance range, on the basis of the initial minimum distance, adjust the minimum distance according to the temperature ratio, and perform the acquisition step again after the minimum distance of each cooling water channel is adjusted;

[0095] Determination step: Repeat the acquisition step and the adjustment step until the average die surface temperature is less than or equal to the preset temperature, and the maximum temperature difference between each die surface area temperature is less than or equal to the preset temperature difference. Take the minimum distance of each cooling water channel at that time as their respective target minimum distances.

[0096] In some embodiments, the adjustment of the minimum distance according to the temperature ratio includes:

[0097] Adjust the minimum distance according to the temperature ratio based on the following formula (5):

[0098] h2 = h1×(1 - B); (5)

[0099] Where h2 represents the adjusted minimum distance, h1 represents the minimum distance before adjustment, and B represents the temperature ratio.

[0100] In some embodiments, the preset minimum distance range is: 2 mm - 15 mm, the value of the preset temperature is 200 degrees Celsius, and the value of the preset temperature difference is 30 degrees Celsius.

[0101] For example, after the hot stamping die design is completed, hot stamping simulation tests need to be carried out, such as simulation analysis. The simulation analysis includes die formability analysis and cooling analysis of the part (the sheet metal to be processed placed in the die, such as the tailor-welded blank mentioned above). After the simulation, the surface temperatures of the part and the die (die surface temperature) can be obtained, so that the parameters of the cooling channels can be optimized according to the temperature analysis results, such as the optimization of the minimum distance mentioned above, thereby improving the temperature uniformity of the hot stamping part. The more uniform the part temperature is, the more uniform the performance of the part and die after quenching is, and the better the part quality is.

[0102] Exemplarily, after the hot stamping simulation is completed, the temperature T of the die surface area corresponding to the cooling channel in the simulation model is measured. The cooling channels in the cross-section of the insert are sequentially numbered as 1, 2, 3, ……, n. The shortest distances from the outer edge of each cooling channel to the die surface are H1, H2, H3, ……, Hn respectively. The die surface area temperatures corresponding to each cooling channel when the hot stamping simulation is completed are T1, T2, T3, ……, Tn respectively.

[0103] After the hot stamping simulation is completed, first calculate the average die surface temperature Tm of the die surface area temperature T corresponding to different cooling channels. Tm = (T1 + T2 + …… + Tn) / n. Then calculate the temperature difference and temperature ratio between each die surface area temperature T and the average die surface temperature Tm. Taking the cooling channel H1 as an example, the temperature difference Tc = T1 - Tm, and the temperature ratio B = Tc / Tm.

[0104] Subsequently, optimize the shortest distance H between the outer edge of the cooling channel and the die surface. For each cooling channel, within the preset minimum distance range, such as: 2mm ≤ H ≤ 15mm, or 3mm ≤ H ≤ 14mm, based on the initial minimum distance, such as on the basis of 8mm, adjust the minimum distance according to the temperature ratio B, such as: h2 = h1×(1 - B), and so on to adjust the minimum distance of each cooling channel, and execute the acquisition step again after the minimum distance of each cooling channel is adjusted, until the average die surface temperature Tm is less than or equal to the preset temperature, such as 200 degrees Celsius, and the maximum temperature difference between the die surface area temperatures is less than or equal to the preset temperature difference, such as 30 degrees Celsius. Take the minimum distances of each water channel at that time as their respective target minimum distances.

[0105] For example: The initial minimum distance of the first water channel H1 numbered 1 is 8 mm. After the hot stamping simulation of the mold, the temperature distribution of the mold surface is detected. It is detected that the average mold surface temperature Tm is 205 °C, the temperature T1 of the mold surface area corresponding to the first water channel is 220 °C, and the maximum temperature difference is 36 °C. At this time, the temperature ratio B = (220 - 205) / 205 = 7.3%. According to this ratio, optimization is carried out to obtain h11 (the minimum distance after the first adjustment of the first water channel) = 8×(1 - 7.3%) = 7.416 mm. By analogy, the optimization design of all water channels is carried out. After the optimization design, the simulation analysis is carried out again. At this time, the average mold surface temperature Tm is reduced to 186 °C, the maximum temperature difference is 26 °C, and the mold surface temperature T11 corresponding to the optimized first water channel = 190 °C. After optimization, the uniformity of the mold surface temperature is improved, and the cooling capacity of the mold is improved.

[0106] According to the second aspect of the embodiments of the present application, an electronic device is provided, including one or more processors and one or more memories. At least one program code is stored in one or more memories, and the at least one program code is loaded and executed by one or more processors to implement the operations performed by the method according to any one of the first aspect.

[0107] See Figure 3 , which is a schematic structural diagram of a computer system suitable for implementing the electronic device of the embodiments of the present application.

[0108] As Figure 3 shown, the electronic device 400 is presented in the form of a general-purpose computing device. The components of the electronic device 400 may include but are not limited to: the at least one processing unit 410 described above, the at least one storage unit 420 described above, and a bus 430 connecting different system components (including the storage unit 420 and the processing unit 410).

[0109] Among them, the storage unit stores program code, and the program code can be executed by the processing unit 410, so that the processing unit 410 executes the steps according to various exemplary embodiments of the present application described in the "Embodiment Method" section of this specification.

[0110] The storage unit 420 may include a readable medium in the form of a volatile storage unit, such as a random access storage unit (RAM) 421 and / or a cache 422, and may further include a read-only storage unit (ROM) 423.

[0111] The storage unit 420 may further include a program / utility 424 having a set (at least one) of program modules 425. Such program modules 425 include but are not limited to: an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment.

[0112] The bus 430 can represent one or more of several types of bus structures, including a memory unit bus or a memory unit controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0113] The electronic device 400 can also communicate with one or more external devices 500 (such as a keyboard, a pointing device, a Bluetooth device, etc.), and can also communicate with one or more devices that enable a user to interact with the electronic device 400, and / or communicate with any device that enables the electronic device 400 to communicate with one or more other computing devices (such as a router, a modem, etc.). Such communication can be carried out through the I / O (input / output) interface 450. Among them, the I / O interface 450 can also be connected to the display unit 440 to display the communication content through the display unit 440. Moreover, the electronic device 400 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through the network adapter 460. As shown in the figure, the network adapter 460 communicates with other modules of the electronic device 400 through the bus 430. It should be understood that although not shown in the figure, other hardware and / or software modules can be used in combination with the electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0114] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. In addition, each functional unit can be integrated in a processing unit, or can exist physically separately for each unit, or two or more units can be integrated in one unit.

[0115] In several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are merely illustrative. For example, the division of units can be a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed among each other can be through some interfaces. The indirect couplings or communication connections of units or modules can be in electrical or other forms.

[0116] The units described as separate components may or may not be physically separated. The components serving as control devices may or may not be physical units, that is, they can be located in one place or distributed to multiple units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0117] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of this 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 for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, read-only memories (ROMs), random access memories (RAMs), mobile hard disks, magnetic disks, or optical discs and other various media that can store program codes.

[0118] According to a third aspect of the embodiments of this application, a computer-readable storage medium is provided. At least one computer program instruction is stored in the computer-readable storage medium, and the at least one computer program instruction is loaded and executed by a processor to implement the operations performed by the method described in any one of the first aspects.

[0119] The computer-readable storage medium can adopt a portable compact disc read-only memory (CD-ROM) and include program codes, and can run on a terminal device, such as a personal computer. However, the computer-readable storage medium of this application is not limited to this. In this application, the readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or component.

[0120] A readable storage medium may, for example, but is not limited to, a system, apparatus, or device of electricity, magnetism, optics, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0121] Program code for performing the operations of the present application may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, etc., and also including conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's device, executed as a stand-alone software package, partially on the user's computing device and partially on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user's computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., by connecting through the Internet using an Internet service provider).

[0122] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A welding control method, characterized in that, The method includes: During the butt welding of the first welding plate and the second welding plate, detecting target weld parameters, where the target weld parameters include: the weld reinforcement at the previous butt welding position and / or the weld gap at the next butt welding position. In the length direction of the weld of the first welding plate and the second welding plate, the previous butt welding position and the next butt welding position are adjacent to each other; Determining target welding parameters corresponding to the target weld parameters according to a preset corresponding relationship, where the target welding parameters include: target welding speed and / or target wire feeding speed; Controlling a welding execution structure to perform butt welding at the next butt welding position according to the target welding parameters.

2. The method according to claim 1, wherein The corresponding relationship includes a first corresponding relationship. Determining the target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes: Determining the welding speed and / or wire feeding speed corresponding to the weld reinforcement according to the first corresponding relationship, where there is a positive correlation between the weld reinforcement and the target welding speed, and a negative correlation between the weld reinforcement and the target wire feeding speed.

3. The method according to claim 2, wherein Determining the first corresponding relationship based on the following formula (1) and / or formula (2): Where, v1 represents the target welding speed, n1 represents a first correction coefficient, v0 represents a preset initial welding speed, h represents the weld reinforcement detected at the previous butt welding position, and h0 represents a preset target weld reinforcement; and / or Where, ω1 represents the target wire feeding speed, n2 represents a second correction coefficient, and ω0 represents a preset initial wire feeding speed.

4. The method according to claim 1, wherein The corresponding relationship includes a second corresponding relationship. Determining the target welding parameters corresponding to the target weld parameters according to the preset corresponding relationship includes: Determining the welding speed and / or wire feeding speed corresponding to the weld gap according to the second corresponding relationship, where there is a negative correlation between the weld gap and the target welding speed, and a positive correlation between the weld gap and the target wire feeding speed.

5. The method according to claim 4, characterized in that Determining the second corresponding relationship based on the following formula (3) and / or formula (4): Where, v1 represents the target welding speed, n3 represents a third correction coefficient, v0 represents a preset initial welding speed, J0 represents a preset target weld gap, and J represents the weld gap detected at the next butt welding position; and / or Where, ω1 represents the target wire feeding speed, n4 represents a fourth correction coefficient, and ω0 represents a preset initial wire feeding speed.

6. The method according to claim 1, wherein After controlling the welding execution structure to perform butt welding at the next butt welding position according to the target welding parameters, the method further includes: Processing the butt-welded plate based on a hot stamping process when the butt-welded plate is placed in a hot stamping die; Where, the butt-welded plate is the butt-welded first welding plate and the second welding plate, and the hot stamping die is provided with a plurality of cooling water channels for cooling the butt-welded plate after hot stamping.

7. The method according to claim 6, wherein The cooling rate of the cooling water channel to the tailor-welded blank is negatively correlated with the target parameter of the cooling water channel, and the target parameter is the target minimum distance between the outer edge of the cooling water channel and the surface of the hot stamping die; The determination of the target minimum distance is based on the following steps: Obtaining step: Conduct a hot stamping simulation test on the hot stamping die. After the test is completed, obtain the temperature of each die surface area corresponding to each cooling water channel, as well as the temperature difference and temperature ratio between each die surface area temperature and the average die surface temperature; Adjusting step: For each cooling water channel, within the preset minimum distance range, based on the initial minimum distance, adjust the minimum distance according to the temperature ratio, and then execute the obtaining step again after the minimum distance of each cooling water channel is adjusted; Determination step: Repeat the obtaining step and the adjusting step until the average die surface temperature is less than or equal to the preset temperature, and the maximum temperature difference between each die surface area temperature is less than or equal to the preset temperature difference. Take the minimum distance of each cooling water channel at that time as their respective target minimum distances.

8. The method according to claim 7, wherein The adjustment of the minimum distance according to the temperature ratio includes: Adjust the minimum distance according to the temperature ratio based on the following formula (5): h2 = h1×(1 - B); (5) Where, h2 represents the adjusted minimum distance, h1 represents the minimum distance before adjustment, and B represents the temperature ratio.

9. The method according to claim 7, wherein The preset minimum distance range is: 2mm - 15mm, the value of the preset temperature is 200 degrees Celsius, and the value of the preset temperature difference is 30 degrees Celsius.

10. An electronic device includes one or more processors and one or more memories. At least one program code is stored in the one or more memories, and the at least one program code is loaded and executed by the one or more processors to implement the operations performed by the method according to any one of 1 - 9.

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