Low heat crack sensitive welding method, apparatus, device, and medium for regulating fusion ratio

Abstract

The application relates to the technical field of welding, in particular to a low-heat-cracking-sensitivity welding method and device for regulating and controlling a fusion ratio, equipment and a medium, wherein the method comprises the following steps: obtaining a solidification curve between a solid phase fraction and a temperature of a weld seam with different fusion ratios; extracting a heat-cracking-sensitivity index in the solidification curve of the weld seam with different fusion ratios; selecting a target fusion ratio according to the heat-cracking-sensitivity index, and controlling a welding machine to perform a welding action according to the target fusion ratio, wherein the heat-cracking-sensitivity index corresponding to the target fusion ratio is smaller than the heat-cracking-sensitivity index corresponding to other fusion ratios in the different fusion ratios. Therefore, the problems of high cost and low universality in the related art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a low heat cracking sensitivity welding method and device for regulating fusion ratio, equipment and medium. BACKGROUND

[0002] Welding heat cracking sensitivity is an important problem in the field of welding engineering, especially in the manufacture of structural parts involving high-strength steel, aluminum alloy and other high-performance alloys. Heat cracks are cracks formed in the weld or heat-affected zone during the welding process due to the thermal effect of the material. Such cracks not only affect the quality of the welded joint, but also can lead to early failure of the structure, posing a serious threat to safety and economy. Therefore, it is of great practical significance to research and develop effective methods to reduce welding heat cracking sensitivity.

[0003] Currently, the welding heat cracking sensitivity is mainly reduced by preheating the welding plate, improving the composition of the welding wire, and adding nano composite particles to the welding wire. However, these techniques have high costs and are generally only applicable to certain specific materials or processes, with low universality. These shortcomings make the existing technology not suitable for large-scale promotion and use in industrial production. SUMMARY

[0004] The present application provides a low heat cracking sensitivity welding method and device for regulating fusion ratio to solve the problems of high cost and low universality of related technology heat cracking sensitivity welding.

[0005] The first aspect embodiment of the present application provides a low heat cracking sensitivity welding method for regulating fusion ratio, comprising the following steps: obtaining the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios; extracting the heat cracking sensitivity index in the solidification curve of the weld with different fusion ratios; selecting a target fusion ratio according to the heat cracking sensitivity index, and controlling the welding machine to perform welding actions according to the target fusion ratio, wherein the heat cracking sensitivity index corresponding to the target fusion ratio is smaller than the heat cracking sensitivity index corresponding to other fusion ratios in the different fusion ratios.

[0006] Optionally, obtaining the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios comprises: obtaining weld data with different fusion ratios; identifying the composition of the weld with different fusion ratios in the weld data with different fusion ratios; and calculating the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios according to the composition of the weld with different fusion ratios.

[0007] Optionally, calculating the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios according to the composition of the weld with different fusion ratios comprises: inputting the composition of the weld with different fusion ratios into a thermodynamic software, and outputting the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios by the thermodynamic software.

[0008] Optionally, the calculation condition of the thermodynamic software is set as limited diffusion in the solid phase and infinite fast diffusion in the liquid phase.

[0009] Optionally, the method for extracting the hot crack sensitivity index in the solidification curve of the weld with different fusion ratios comprises: inputting the solidification curve of the weld with different fusion ratios into a mathematical software, and outputting the hot crack sensitivity index by the mathematical software.

[0010] Optionally, the processing flow of the mathematical software comprises: extracting the solid phase fraction of the abscissa of the solidification curve, and taking the square root of the solid phase fraction of the abscissa; taking the derivative of the solid phase fraction after the square root with respect to the Celsius temperature, and taking the absolute value of the derivative; selecting the maximum value of the absolute value of the derivative when the solid phase fraction is less than a preset range according to a preset step length, and determining the hot crack sensitivity index according to the maximum value.

[0011] The second aspect embodiment of the present application provides a low hot crack sensitivity welding device for regulating the fusion ratio, comprising: an acquisition module configured to acquire a solidification curve between the solid phase fraction and the temperature of a weld with different fusion ratios; an extraction module configured to extract a hot crack sensitivity index in the solidification curve of the weld with different fusion ratios; and a control module configured to select a target fusion ratio according to the hot crack sensitivity index, and control a welding machine to perform a welding action according to the target fusion ratio, wherein the hot crack sensitivity index corresponding to the target fusion ratio is less than the hot crack sensitivity index corresponding to other fusion ratios in the different fusion ratios.

[0012] The third aspect embodiment of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the low hot crack sensitivity welding method for regulating the fusion ratio according to the first aspect.

[0013] The fourth aspect embodiment of the present application provides a computer readable storage medium having a computer program or instructions stored thereon, wherein the computer program or instructions are executed to implement the low hot crack sensitivity welding method for regulating the fusion ratio according to the first aspect.

[0014] The fifth aspect embodiment of the present application provides a computer program product comprising a computer program or instructions, wherein the computer program or instructions are executed to implement the low hot crack sensitivity welding method for regulating the fusion ratio according to the first aspect.

[0015] Therefore, the present application has the following beneficial effects:

[0016] The embodiment of the present application obtains the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios, extracts the hot cracking sensitivity index therefrom, selects the target fusion ratio according to the hot cracking sensitivity index, controls the welding machine to perform the welding action, has low cost, is simple to operate, can quickly obtain the low hot cracking sensitivity welding joint, has universality for various alloys and various fusion welding methods, and is suitable for popularization and use in industrial production. Therefore, the problems of high cost and low universality of the related art hot cracking sensitivity welding are solved.

[0017] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A flowchart of a low hot cracking sensitivity welding method for regulating a fusion ratio according to an embodiment of the present application is shown in FIG. 1.

[0020] Figure 2 A flowchart of a low hot cracking sensitivity welding technology implementation according to an embodiment of the present application is shown in FIG. 2.

[0021] Figure 3 A flowchart of a calculation for quickly obtaining the hot cracking sensitivity index of the weld with different fusion ratios according to an embodiment of the present application is shown in FIG. 3.

[0022] Figure 4 A line graph of the hot cracking sensitivity index value of the weld with different fusion ratios of the 2325 welding wire welding 2195 aluminum lithium alloy according to an embodiment of the present application is shown in FIG. 4.

[0023] Figure 5 A comparison graph of the weld before and after the preferred fusion ratio of the 2325 welding wire welding 2195 aluminum lithium alloy according to an embodiment of the present application is shown in FIG. 5.

[0024] Figure 6 An example diagram of a low hot cracking sensitivity welding device for regulating a fusion ratio according to an embodiment of the present application is shown in FIG. 6.

[0025] Figure 7 A structural schematic diagram of an electronic device according to an embodiment of the present application is shown in FIG. 7. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described below in detail, examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0027] The low heat cracking sensitivity welding method, device, equipment and medium for regulating the fusion ratio of the embodiments of the present application are described below with reference to the drawings. In view of the problems of high cost and low universality of the related art heat cracking sensitivity welding mentioned in the background art, the present application provides a low heat cracking sensitivity welding method for regulating the fusion ratio. In the method, the solidification curve between the solid fraction and the temperature of the weld with different fusion ratios is obtained, and the heat cracking sensitivity index is extracted therefrom, and then the target fusion ratio is selected according to the heat cracking sensitivity index, and the welding machine is controlled to perform the welding action. The method has low cost, simple operation, and can quickly obtain a low heat cracking sensitivity welded joint, and has universality for various alloys and various welding methods, and is suitable for popularization and use in industrial production. Thus, the problems of high cost and low universality of the related art heat cracking sensitivity welding are solved.

[0028] Specifically, Figure 1 A flowchart of a low heat cracking sensitivity welding method for regulating the fusion ratio provided by the embodiments of the present application is shown.

[0029] As Figure 1 shown, the low heat cracking sensitivity welding method for regulating the fusion ratio includes the following steps:

[0030] In step S101, the solidification curve between the solid fraction and the temperature of the weld with different fusion ratios is obtained.

[0031] The fusion ratio refers to the proportion of the metal from the base material to the metal from the filler material (welding wire) in the weld metal; the solid fraction refers to the proportion of the solid part that has solidified in the total liquid and solid mixture during the solidification process; and the solidification curve is a curve describing the change of the solid fraction with temperature during the solidification process of the material.

[0032] It can be understood that the embodiments of the present application can calculate and obtain the solidification curve between the solid fraction and the temperature of the weld with different fusion ratios, and the specific calculation method will be described in detail below, which will not be described here.

[0033] In the embodiments of the present application, the solidification curve between the solid fraction and the temperature of the weld with different fusion ratios is obtained, including: obtaining different fusion ratio weld data; identifying different fusion ratio weld components in the different fusion ratio weld data; and calculating the solidification curve between the solid fraction and the temperature of the weld with different fusion ratios according to the different fusion ratio weld components.

[0034] The different fusion ratio weld data can be obtained by changing welding parameters to perform welding experiments to obtain weld samples with different fusion ratios, and the temperature changes during welding are recorded; and the different fusion ratio weld components in the different fusion ratio weld data can be identified by performing microscope observation and energy spectrum analysis on the weld samples.

[0035] It can be understood that the embodiments of the present application can change welding parameters to perform welding experiments to obtain weld samples with different fusion ratios, record the temperature changes during welding to obtain different fusion ratio weld data, identify different fusion ratio weld components in the different fusion ratio weld data by performing microscope observation and energy spectrum analysis on the weld samples, and calculate the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds according to the different fusion ratio weld components. The way of calculating the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds will be described in detail below, and will not be described here.

[0036] In the embodiments of the present application, calculating the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds according to the different fusion ratio weld components comprises: inputting the different fusion ratio weld components into a thermodynamic software, and the thermodynamic software outputs the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds.

[0037] The thermodynamic software can be Thermo-Calc, JMatPro, Pandat, etc.

[0038] It can be understood that the embodiments of the present application can use the thermodynamic software, first input the different fusion ratio weld components into the system definition module of the thermodynamic software, then call the non-equilibrium solidification module for calculation, and output the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds.

[0039] In the embodiments of the present application, the calculation conditions of the thermodynamic software are set as limited diffusion in the solid phase and infinite fast diffusion in the liquid phase.

[0040] The limited diffusion in the solid phase means that the migration rate of atoms or molecules is limited in the solid phase, and cannot reach the equilibrium state instantaneously; and the infinite fast diffusion in the liquid phase means that the migration rate of atoms or molecules is very fast in the liquid phase, and can reach the equilibrium state instantaneously.

[0041] It can be understood that the embodiments of the present application use the thermodynamic software to calculate and output the solidification curves between the solid phase fractions and the temperatures of the different fusion ratio welds, and the calculation conditions need to be set, which are limited diffusion in the solid phase and infinite fast diffusion in the liquid phase.

[0042] In step S102, the hot cracking sensitivity index in the solidification curve of the different fusion ratio weld is extracted.

[0043] The hot cracking sensitivity index includes liquidus temperature, solidus temperature, solidification interval, and maximum liquid fraction, etc.

[0044] It can be understood that the embodiment of the present application can extract the hot cracking sensitivity index in the solidification curve of the weld with different fusion ratios, and the extraction method will be described in detail below, which will not be repeated here.

[0045] In the embodiment of the present application, the hot cracking sensitivity index in the solidification curve of the weld with different fusion ratios is extracted, including: inputting the solidification curve of the weld with different fusion ratios into a mathematical software, and the mathematical software outputs the hot cracking sensitivity index.

[0046] The mathematical software can be MATLAB, Python, etc.

[0047] It can be understood that after the solidification curve of the weld with different fusion ratios is calculated, the solidification curve data is input into a mathematical software, such as MATLAB, Python, etc., and the mathematical software will automatically calculate and output the hot cracking sensitivity index.

[0048] In the embodiment of the present application, the processing flow of the mathematical software includes: extracting the solid phase fraction of the abscissa of the solidification curve, and taking the square root of the solid phase fraction of the abscissa; taking the derivative of the solid phase fraction after the square root with respect to the Celsius temperature, and taking the absolute value of the derivative; selecting the maximum value of the absolute value of the derivative within the preset range according to the preset step size, and determining the hot cracking sensitivity index according to the maximum value.

[0049] The preset range is specifically set according to actual needs, which is not limited here.

[0050] It can be understood that the mathematical software of the embodiment of the present application extracts the solid phase fraction corresponding to each temperature point from the solidification curve, and performs square root operation on the extracted solid phase fraction, then calculates the derivative of the solid phase fraction after the square root with respect to the temperature, and takes the absolute value of the derivative, selects the maximum value of the absolute value of the derivative within the preset range according to the preset temperature step, and finally selects the maximum value as the hot cracking sensitivity index, which is used to evaluate the hot cracking tendency of the weld.

[0051] In step S103, a target fusion ratio is selected according to the hot cracking sensitivity index, and a welding machine is controlled to perform a welding action according to the target fusion ratio, wherein the hot cracking sensitivity index corresponding to the target fusion ratio is smaller than the hot cracking sensitivity index corresponding to other fusion ratios in the different fusion ratios.

[0052] The welding action can be realized by laser welding, electron beam welding, etc.

[0053] It can be understood that the embodiments of the present application select the target fusion ratio according to the size of the hot cracking sensitivity index, select the minimum one of the hot cracking sensitivity indexes corresponding to different fusion ratios as the target fusion ratio, control the welding machine according to the target fusion ratio, and implement the welding action by means of laser welding, electron beam welding and the like.

[0054] According to the low hot cracking sensitivity welding method for regulating the fusion ratio provided by the embodiments of the present application, the solidification curve between the solid phase fraction and the temperature of the weld seams with different fusion ratios is obtained, the hot cracking sensitivity index is extracted therefrom, the target fusion ratio is selected according to the hot cracking sensitivity index, the welding machine is controlled to implement the welding action, the cost is low, the operation is simple, the low hot cracking sensitivity welded joint can be quickly obtained, and the method has universality for various alloys and various fusion welding methods, and is suitable for popularization and use in industrial production.

[0055] The low hot cracking sensitivity welding method for regulating the fusion ratio is further described below through a specific embodiment.

[0056] As Figure 2 The technical implementation flowchart of the embodiment is shown in the figure, and the specific process is as follows.

[0057] Step S201, the composition of the weld seam with different fusion ratios is calculated.

[0058] Step S202, the solidification curve between the solid phase fraction (fs) and the temperature (T) of the weld seam with different fusion ratios is calculated by using the thermodynamic software Thermo-Calc.

[0059] The calculation condition is that the diffusion in the solid phase is limited, and the diffusion in the liquid phase is infinitely fast.

[0060] Step S203, the hot cracking sensitivity index |dT / d(fs)1 / 2|max is quickly extracted by using the software MATLAB.

[0061] The mathematical software MATLAB is used to batch process the curve, and the hot cracking sensitivity index is quickly obtained. The specific process is that the square root of the horizontal coordinate solid phase fraction is taken, and the derivative of the square root of the solid phase fraction with respect to the Celsius temperature is taken, and then the absolute value of the derivative is taken. According to the preset step size, the maximum value of the absolute value of the derivative in the range of solid phase fraction less than 0.98 is obtained, that is, the hot cracking sensitivity index |dT / d(fs)1 / 2|max of the solidification crack.

[0062] Step S204, the fusion ratio is optimized by the hot cracking sensitivity index, and the low hot cracking sensitivity joint is obtained by using the TIG welding machine to perform welding.

[0063] Figure 3 The calculation flowchart for quickly obtaining the hot cracking sensitivity index of the weld seam composition with different fusion ratios is shown in the figure. Figure 3

[0064] ​Step S301, input alloy composition.

[0065] Step S302, Thermo-Calc calculates the solidification curve.

[0066] Step S303, output excel result file.

[0067] Step S304, MATLAB calculates | dT / d(f s ) 1 / 2 |(f s <0.98).

[0068] Step S305, MATLAB screening gets hot crack sensitivity index | dT / d(f s ) 1 / 2 | max .

[0069] Figure 4 is the calculated commercial 2325 and 4043 welding wire welding 2195 aluminum lithium alloy, different fusion ratio of weld hot crack sensitivity index value, Figure 5 is the use of commercial 2325 welding wire welding 2195 aluminum lithium alloy, preferably before and after the weld fusion ratio comparison, weld hot crack is significantly reduced, low cost, simple operation, can quickly obtain low hot crack sensitivity welded joint.

[0070] Second, with reference to the drawings described according to the embodiment of the present application is proposed to control the low hot crack sensitivity of the fusion ratio of the welding device.

[0071] Figure 6 is the block diagram of the low hot crack sensitivity welding device of the fusion ratio control of the embodiment of the present application.

[0072] As Figure 6 shown, the low hot crack sensitivity welding device 10 of the fusion ratio control includes: acquisition module 401, extraction module 402 and control module 403.

[0073] Among them, the acquisition module 401 is used for acquiring the solidification curve between the solid phase fraction and the temperature of the different fusion ratio of the weld; the extraction module 402 is used for extracting the hot crack sensitivity index in the solidification curve of the different fusion ratio of the weld; the control module 403 is used for selecting the target fusion ratio according to the hot crack sensitivity index, and controlling the welding machine to implement the welding action according to the target fusion ratio, wherein the hot crack sensitivity index corresponding to the target fusion ratio is less than the hot crack sensitivity index corresponding to other fusion ratios in the different fusion ratios.

[0074] In the embodiment of the present application, the acquisition module 401 is further configured to acquire the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios, including: acquiring weld data with different fusion ratios; identifying different weld compositions with different fusion ratios; and calculating the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios according to the different weld compositions with different fusion ratios.

[0075] In the embodiment of the present application, the calculation of the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios according to the different weld compositions with different fusion ratios includes: inputting the different weld compositions with different fusion ratios into thermodynamic software, and the thermodynamic software outputs the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios.

[0076] In the embodiment of the present application, the calculation condition of the thermodynamic software is set as limited diffusion in the solid phase and unlimited diffusion in the liquid phase.

[0077] In the embodiment of the present application, the extraction module 402 is further configured to extract the hot cracking sensitivity index in the solidification curve of the weld with different fusion ratios, including: inputting the solidification curve of the weld with different fusion ratios into mathematical software, and the mathematical software outputs the hot cracking sensitivity index.

[0078] In the embodiment of the present application, the processing flow of the mathematical software includes: extracting the solid phase fraction of the abscissa of the solidification curve, taking the square root of the solid phase fraction of the abscissa; taking the derivative of the square-rooted solid phase fraction with respect to the Celsius temperature, and taking the absolute value of the derivative; selecting the maximum value of the absolute value of the derivative within the preset range according to the preset step size, and determining the hot cracking sensitivity index according to the maximum value.

[0079] It should be noted that the foregoing explanation and description of the embodiment of the low hot cracking sensitivity welding method for regulating the fusion ratio also applies to the embodiment of the low hot cracking sensitivity welding device for regulating the fusion ratio, which will not be described herein again.

[0080] According to the low hot cracking sensitivity welding device for regulating the fusion ratio provided in the embodiment of the present application, the acquisition module, the extraction module and the control module can work together to acquire the solidification curve between the solid phase fraction and the temperature of the weld with different fusion ratios, extract the hot cracking sensitivity index therefrom, select the target fusion ratio according to the hot cracking sensitivity index, and control the welding machine to perform the welding action, which is low in cost, simple in operation, can quickly obtain a low hot cracking sensitivity welded joint, and is universal for various alloys and various welding methods, and is suitable for popularization and use in industrial production.

[0081] Figure 7 The electronic device provided in the embodiment of the present application is shown in a structural schematic diagram. The electronic device can include:

[0082] The memory 501, the processor 502, and the computer program stored in the memory 501 and executable on the processor 502.

[0083] The processor 502 implements the low-heat-cracking-sensitivity welding method for regulating the fusion ratio provided in the above embodiments when executing a program.

[0084] Further, the electronic device further comprises:

[0085] The communication interface 503 is configured to communicate between the memory 501 and the processor 502.

[0086] The memory 501 is configured to store a computer program executable on the processor 502.

[0087] The memory 501 can include a high-speed RAM (Random Access Memory) memory, and can further include a non-volatile memory, for example, at least one disk memory.

[0088] If the memory 501, the processor 502 and the communication interface 503 are independently implemented, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and complete communication between each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 7 Only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus.

[0089] Optionally, in a specific implementation, if the memory 501, the processor 502 and the communication interface 503 are integrated on a chip, the memory 501, the processor 502 and the communication interface 503 can complete communication between each other through an internal interface.

[0090] The processor 502 can be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0091] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program or instructions, and the computer program or instructions are executed to implement the low-heat-cracking-sensitivity welding method for regulating the fusion ratio.

[0092] The embodiments of the present application also provide a computer program product comprising computer programs or instructions, which, when executed, implement the above-mentioned welding method for regulating the low-heat-cracking-sensitivity of a fusion ratio.

[0093] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

[0094] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless otherwise explicitly specified.

[0095] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for implementing specific logic functions (or steps) in the process, and that the various embodiments of the preferred implementation include the use of hardware and software in a manner that should be understood by those having skill in the art. The various embodiments of the preferred implementation can be further understood in terms of the following clauses:

[0096] It should be understood that portions of the present application can be realized with hardware, software, firmware or a combination thereof. In the above-described embodiments, the steps or methods can be realized with software or firmware stored in a memory and executed by a suitable instruction execution system. As if realized with hardware and in another embodiment, any one or their combination of the following technologies known in the art can be used: discrete logic circuit with logic gate circuit for implementing logic functions on data signals, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array, field programmable gate array, etc.

[0097] Those skilled in the art can understand that all or part of the steps of the method for implementing the above-mentioned embodiments can be instructed by a program to complete the relevant hardware, and the above-mentioned program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0098] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A low-thermal-cracking-susceptibility welding method for controlling the fusion ratio, characterized in that, Includes the following steps: Obtain solidification curves of solid fraction versus temperature for welds with different fusion ratios; The hot cracking sensitivity index is extracted from the solidification curves of welds with different fusion ratios. The solidification curves of welds with different fusion ratios are input into mathematical software, which outputs the hot cracking sensitivity index. The processing flow of the mathematical software includes: extracting the solid fraction of the abscissa of the solidification curve and taking the square root of the solid fraction; taking the derivative of the square rooted solid fraction with respect to temperature in degrees Celsius and taking the absolute value of the derivative; selecting the maximum value of the absolute value of the derivative within a preset range where the solid fraction is less than the preset step size, and determining the hot cracking sensitivity index based on the maximum value. A target fusion ratio is selected based on the hot cracking sensitivity index, and the welding machine is controlled to perform welding actions based on the target fusion ratio. The hot cracking sensitivity index corresponding to the target fusion ratio is less than the hot cracking sensitivity index corresponding to other fusion ratios among the different fusion ratios.

2. The low-thermal-cracking-sensitivity welding method for controlling the fusion ratio according to claim 1, characterized in that, The process of obtaining solidification curves for the solid fraction versus temperature of welds with different fusion ratios includes: Obtain weld data with different fusion ratios; Identify the weld composition with different fusion ratios in the weld data with different fusion ratios; Based on the weld composition with different fusion ratios, solidification curves between solid fraction and temperature for welds with different fusion ratios were calculated.

3. The low-thermal-cracking-sensitivity welding method for controlling the fusion ratio according to claim 2, characterized in that, The calculation of solidification curves between solid fraction and temperature for welds with different fusion ratios based on the weld composition with different fusion ratios includes: The weld composition with different fusion ratios is input into thermodynamic software, which outputs solidification curves of the solid fraction of welds with different fusion ratios versus temperature.

4. The low-thermal-cracking-sensitivity welding method for controlling the fusion ratio according to claim 3, characterized in that, The calculation conditions of the thermodynamic software are set to finite diffusion in the solid phase and infinitely fast diffusion in the liquid phase.

5. A low-thermal-cracking-sensitivity welding apparatus for controlling the fusion ratio, characterized in that, include: The acquisition module is used to acquire the solidification curves of welds with different fusion ratios as a function of solidification fraction and temperature. An extraction module is used to extract hot cracking sensitivity indicators from the solidification curves of welds with different fusion ratios. The control module is used to select a target fusion ratio based on the hot cracking sensitivity index, and control the welding machine to perform welding actions based on the target fusion ratio, wherein the hot cracking sensitivity index corresponding to the target fusion ratio is less than the hot cracking sensitivity index corresponding to other fusion ratios among the different fusion ratios.

6. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the low hot cracking sensitivity welding method for controlling the fusion ratio as described in any one of claims 1-4.

7. A computer-readable storage medium having a computer program or instructions stored thereon, characterized in that, When the computer program or instructions are executed, they implement the low hot cracking sensitivity welding method for controlling the fusion ratio as described in any one of claims 1-4.

8. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed, they implement the low hot cracking sensitivity welding method for controlling the fusion ratio as described in any one of claims 1-4.

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