Low-hot-crack sensitivity welding method, device and equipment capable of regulating and controlling fusion ratio and medium

Abstract

The invention relates to the technical field of welding, in particular to a low-heat-crack-sensitivity welding method, device, equipment and medium capable of regulating and controlling the fusion ratio, and the method comprises the steps that a solidification curve between the solid-phase fraction and the temperature of weld joints with different fusion ratios is obtained; extracting hot crack sensitivity indexes in the solidification curves of the welding seams with different fusion ratios; a target fusion ratio is selected according to the hot crack sensitivity indexes, a welding machine is controlled to carry out the welding action according to the target fusion ratio, and the hot crack sensitivity index corresponding to the target fusion ratio is smaller than the hot crack sensitivity indexes corresponding to other fusion ratios in different fusion ratios. Therefore, the problems of relatively high cost and low universality in related technologies are solved.

Description

Technical Field

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

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

[0003] At present, the main methods to reduce the sensitivity of welding hot cracking are preheating the welding plate, improving the composition of the welding wire, adding nano-composite particles to the welding wire, etc., but these technologies are costly and generally only target a certain material or process, and have low universality. These shortcomings make the existing technology unfavorable for large-scale promotion and use in industrial production. Summary of the invention

[0004] The present application provides a low thermal crack sensitivity welding method, device, equipment and medium for regulating fusion ratio, so as to solve the problems of high cost and low universality of thermal crack sensitivity welding in related technologies.

[0005] The first aspect of the present application provides a low thermal crack sensitivity welding method for regulating the fusion ratio, comprising the following steps: obtaining solidification curves between the solid phase fraction and temperature of welds with different fusion ratios; extracting thermal crack sensitivity indicators in the solidification curves of welds with different fusion ratios; selecting a target fusion ratio according to the thermal crack sensitivity indicator, and controlling a welding machine to perform welding according to the target fusion ratio, wherein the thermal crack sensitivity indicator corresponding to the target fusion ratio is smaller than the thermal crack sensitivity indicators corresponding to other fusion ratios among different fusion ratios.

[0006] Optionally, obtaining solidification curves between solid phase fractions and temperatures of welds with different fusion ratios includes: obtaining weld data with different fusion ratios; identifying weld components with different fusion ratios in the weld data with different fusion ratios; and calculating solidification curves between solid phase fractions and temperatures of welds with different fusion ratios according to the weld components with different fusion ratios.

[0007] Optionally, the solidification curves between the solid phase fractions and the temperatures of the welds with different fusion ratios are calculated according to the weld components with different fusion ratios, including: inputting the weld components with different fusion ratios into thermodynamic software, and the thermodynamic software outputting the solidification curves between the solid phase fractions and the temperatures of the welds with different fusion ratios.

[0008] Optionally, the calculation conditions of the thermodynamic software are set to finite diffusion in the solid phase and infinite diffusion in the liquid phase.

[0009] Optionally, extracting the hot crack sensitivity index from the solidification curves of welds with different fusion ratios includes: inputting the solidification curves of welds with different fusion ratios into mathematical software, and the mathematical software outputting the hot crack sensitivity index.

[0010] Optionally, the processing flow of the mathematical software includes: extracting the solid phase fraction of the horizontal axis of the solidification curve, and taking the square root of the solid phase fraction of the horizontal axis; taking the derivative of the solid phase fraction after the square root with respect to the 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 whose solid phase fraction is less than the absolute value of the derivative within a preset range according to a preset step size, and determining the thermal cracking sensitivity index based on the maximum value.

[0011] The second aspect of the present application provides a low thermal crack sensitivity welding device for regulating fusion ratio, including: an acquisition module, used to obtain the solidification curve between the solid phase fraction and temperature of welds with different fusion ratios; an extraction module, used to extract the thermal crack sensitivity index in the solidification curve of welds with different fusion ratios; a control module, used to select a target fusion ratio according to the thermal crack sensitivity index, and control a welding machine to perform welding according to the target fusion ratio, wherein the thermal crack sensitivity index corresponding to the target fusion ratio is smaller than the thermal crack sensitivity index corresponding to other fusion ratios among different fusion ratios.

[0012] The third aspect of the present application provides an electronic device, including: 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 thermal crack sensitivity welding method for regulating the fusion ratio of the first aspect.

[0013] The fourth aspect of the present application provides a computer-readable storage medium having a computer program or instruction stored thereon. When the computer program or instruction is executed, the low thermal crack sensitivity welding method for regulating the fusion ratio of the first aspect is implemented.

[0014] The fifth aspect of the present application provides a computer program product, including a computer program or instructions. When the computer program or instructions are executed, the low thermal crack sensitivity welding method for regulating the fusion ratio of the first aspect is implemented.

[0015] Therefore, this application includes the following beneficial effects:

[0016] The embodiment of the present application obtains the solidification curves between the solid phase fraction and temperature of welds with different fusion ratios, extracts the thermal cracking sensitivity index therefrom, selects the target fusion ratio according to the thermal cracking sensitivity index, and controls the welding machine to perform the welding action. The method is low in cost and easy to operate, and can quickly obtain a low thermal cracking sensitivity welded joint. The method is universal for various alloys and various fusion welding methods, and is suitable for promotion and use in industrial production. Thus, the problems of high cost and low universality of thermal cracking sensitivity welding in related technologies are solved.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 A flowchart of a low thermal cracking sensitivity welding method for adjusting fusion ratio provided in accordance with an embodiment of the present application;

[0020] Figure 2 A flowchart for implementing a low thermal crack sensitivity welding technology according to an embodiment of the present application;

[0021] Figure 3 A calculation flow chart for quickly obtaining hot cracking sensitivity indexes of weld components with different fusion ratios according to an embodiment of the present application;

[0022] Figure 4 A line graph showing the thermal cracking sensitivity index values ​​of 2195 aluminum-lithium alloy welded with 2325 and 4043 welding wires at different fusion ratios according to one embodiment of the present application;

[0023] Figure 5 A comparison diagram of welds before and after the preferred fusion ratio when welding 2195 aluminum-lithium alloy using commercial 2325 welding wire according to an embodiment of the present application;

[0024] Figure 6 This is an exemplary diagram of a low thermal cracking sensitivity welding device for adjusting fusion ratio according to an embodiment of the present application;

[0025] Figure 7 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0027] The following describes the low thermal crack sensitivity welding method, device, equipment and medium for regulating the fusion ratio of the embodiment of the present application with reference to the accompanying drawings. In view of the high cost and low universality of the thermal crack sensitivity welding of the related art mentioned in the above background technology, the present application provides a low thermal crack sensitivity welding method for regulating the fusion ratio. In this method, by obtaining the solidification curve between the solid phase fraction and temperature of the welds with different fusion ratios, and extracting the thermal crack sensitivity index therefrom, and then selecting the target fusion ratio according to the thermal crack sensitivity index, the welding machine is controlled to perform the welding action, which has low cost and simple operation, can quickly obtain low thermal crack sensitivity welded joints, and has universal applicability to various alloys and various fusion welding methods, and is suitable for promotion and use in industrial production. Thus, the problem of high cost and low universality of the related technology is solved. Thus, the problem of high cost and low universality of the thermal crack sensitivity welding of the related technology is solved.

[0028] Specifically, Figure 1 A schematic flow chart of a low thermal cracking sensitivity welding method for regulating fusion ratio provided in an embodiment of the present application.

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

[0030] In step S101, solidification curves between solid phase fraction and temperature of welds with different fusion ratios are obtained.

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

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

[0033] In an embodiment of the present application, obtaining solidification curves between solid phase fractions and temperatures of welds with different fusion ratios includes: obtaining weld data with different fusion ratios; identifying weld components with different fusion ratios in the weld data with different fusion ratios; and calculating solidification curves between solid phase fractions and temperatures of welds with different fusion ratios according to the weld components with different fusion ratios.

[0034] Among them, the data of welds with different fusion ratios can be obtained by changing the welding parameters to conduct welding experiments, obtaining weld samples with different fusion ratios, and recording the temperature changes during the welding process; identifying the components of welds with different fusion ratios in the data of welds with different fusion ratios can be achieved by microscopic observation and energy spectrum analysis of the weld samples.

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

[0036] In an embodiment of the present application, solidification curves between solid phase fractions and temperatures of welds with different fusion ratios are calculated according to weld components with different fusion ratios, including: inputting weld components with different fusion ratios into thermodynamic software, and the thermodynamic software outputting solidification curves between solid phase fractions and temperatures of welds with different fusion ratios.

[0037] Among them, the thermodynamic software can be Thermo-Calc, JMatPro, Pandat, etc.

[0038] It can be understood that the embodiment of the present application can use thermodynamic software. First, the components of welds with different fusion ratios are input into the system definition module of the thermodynamic software, and then the non-equilibrium solidification module is called for calculation, and the solidification curves between the solid phase fraction and temperature of welds with different fusion ratios are output.

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

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

[0041] It can be understood that the embodiment of the present application uses thermodynamic software to calculate and output the solidification curve between the solid phase fraction and temperature of different fusion ratio welds, which requires setting calculation conditions, and the calculation conditions are limited diffusion in the solid phase and infinite diffusion in the liquid phase.

[0042] In step S102, hot cracking sensitivity indicators are extracted from solidification curves of welds with different fusion ratios.

[0043] Among them, thermal cracking sensitivity indicators include liquidus temperature, solidus temperature, solidification range and maximum liquid fraction, etc.

[0044] It can be understood that the embodiment of the present application can extract the thermal cracking sensitivity index in the solidification curves of welds with different fusion ratios. The extraction method will be described in detail below and will not be repeated here.

[0045] In an embodiment of the present application, extracting a hot crack sensitivity index from solidification curves of welds with different fusion ratios includes: inputting the solidification curves of welds with different fusion ratios into mathematical software, and the mathematical software outputting the hot crack sensitivity index.

[0046] Among them, the mathematical software can be MATLAB, Python, etc.

[0047] It is understandable that after the solidification curves of welds with different fusion ratios are calculated in the embodiment of the present application, these solidification curve data are input into mathematical software, such as MATLAB, Python, etc., and the mathematical software will automatically calculate and output the hot crack sensitivity index.

[0048] In an embodiment of the present application, the processing flow of the mathematical software includes: extracting the solid phase fraction of the horizontal axis of the solidification curve, and taking the square root of the solid phase fraction of the horizontal axis; taking the derivative of the solid phase fraction after the square root with respect to the 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 whose solid phase fraction is less than the preset step size according to the preset step size, and determining the thermal cracking sensitivity index based on the maximum value.

[0049] The preset range is set according to actual needs and is not specifically 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, performs a square root operation on the extracted solid phase fraction, 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. According to the preset temperature step, the maximum value of the absolute value of the derivative whose solid phase fraction is less than the preset range is selected, and finally the selected maximum value is used as the thermal cracking sensitivity index to evaluate the thermal cracking tendency of the weld.

[0051] In step S103, a target fusion ratio is selected according to the thermal crack sensitivity index, and the welding machine is controlled to perform welding according to the target fusion ratio, wherein the thermal crack sensitivity index corresponding to the target fusion ratio is smaller than the thermal crack sensitivity indexes corresponding to other fusion ratios among different fusion ratios.

[0052] Among them, the welding action can be achieved by laser welding, electron beam welding and the like.

[0053] It can be understood that the embodiment of the present application selects the target fusion ratio according to the size of the thermal crack sensitivity index, selects the smallest one of the thermal crack sensitivity indicators corresponding to different fusion ratios as the target fusion ratio, controls the welding machine according to the target fusion ratio, and implements the welding action by laser welding, electron beam welding, etc.

[0054] According to the low thermal crack sensitivity welding method for regulating the fusion ratio proposed in the embodiment of the present application, the solidification curves between the solid phase fraction and temperature of welds with different fusion ratios are obtained, and the thermal crack sensitivity index is extracted therefrom. Then, the target fusion ratio is selected according to the thermal crack sensitivity index, and the welding machine is controlled to perform the welding action. The method has low cost and is easy to operate. A low thermal crack sensitivity weld joint can be quickly obtained. The method is universal for various alloys and various fusion welding methods and is suitable for promotion and use in industrial production.

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

[0056] like Figure 2 The technical implementation flow chart of this embodiment is shown as follows:

[0057] Step S201, calculating the composition of welds with different fusion ratios.

[0058] Step S202: using thermodynamic software Thermo-Calc to calculate the solidification curves between the solid fraction (fs) and the temperature (T) of welds with different fusion ratios.

[0059] The calculation conditions are finite diffusion in the solid phase and infinite diffusion in the liquid phase.

[0060] Step S203: Use the software MATLAB to quickly extract the hot cracking sensitivity index |dT / d(fs)1 / 2|max.

[0061] The mathematical software MATLAB is used to batch process the curves to quickly obtain the hot crack sensitivity index. The specific process is to square the solid fraction of the horizontal axis, and then take the derivative of the solid fraction after the square root with respect to the temperature in degrees Celsius, and then take the absolute value of the derivative. According to the preset step size, the maximum absolute value of the derivative within the range of solid fraction less than 0.98 is obtained, which is the hot crack sensitivity index of solidification cracks |dT / d(fs)1 / 2|max.

[0062] Step S204: Optimize the fusion ratio by the thermal crack sensitivity index, and use a TIG welder to weld to obtain a low thermal crack sensitivity joint.

[0063] Figure 3 It is a calculation flow chart for quickly obtaining the thermal cracking sensitivity index of weld components with different fusion ratios, such as Figure 3 As shown:

[0064] Step S301, input alloy composition.

[0065] Step S302: Thermo-Calc calculates and obtains a solidification curve.

[0066] Step S303, outputting the excel result file.

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

[0068] Step S305: MATLAB screens and obtains the thermal cracking sensitivity index |dT / d(f s ) 1 / 2 | max .

[0069] Figure 4 It is the calculated thermal cracking sensitivity index value of the welds with different fusion ratios of commercial 2325 and 4043 welding wires welding 2195 aluminum-lithium alloy. Figure 5 The commercial 2325 welding wire is used to weld 2195 aluminum-lithium alloy. The welds before and after the fusion ratio are compared. The thermal cracks of the welds are significantly reduced. The cost is low, the operation is simple, and low thermal crack sensitivity weld joints can be quickly obtained.

[0070] Next, a low thermal crack sensitivity welding device for adjusting the fusion ratio according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0071] Figure 6 It is a block diagram of a low thermal cracking sensitivity welding device for regulating fusion ratio according to an embodiment of the present application.

[0072] like Figure 6 As shown, the low thermal cracking sensitivity welding device 10 for adjusting the fusion ratio includes: an acquisition module 401 , an extraction module 402 and a control module 403 .

[0073] Among them, the acquisition module 401 is used to obtain the solidification curve between the solid phase fraction and temperature of welds with different fusion ratios; the extraction module 402 is used to extract the thermal cracking sensitivity index in the solidification curve of welds with different fusion ratios; the control module 403 is used to select the target fusion ratio according to the thermal cracking sensitivity index, and control the welding machine to perform welding according to the target fusion ratio, wherein the thermal cracking sensitivity index corresponding to the target fusion ratio is smaller than the thermal cracking sensitivity index corresponding to other fusion ratios among different fusion ratios.

[0074] In an embodiment of the present application, the acquisition module 401 is further used to: obtain solidification curves between solid phase fractions and temperatures of welds with different fusion ratios, including: obtaining weld data with different fusion ratios; identifying weld components with different fusion ratios in weld data with different fusion ratios; and calculating solidification curves between solid phase fractions and temperatures of welds with different fusion ratios according to weld components with different fusion ratios.

[0075] In an embodiment of the present application, solidification curves between solid phase fractions and temperatures of welds with different fusion ratios are calculated according to weld components with different fusion ratios, including: inputting weld components with different fusion ratios into thermodynamic software, and the thermodynamic software outputting solidification curves between solid phase fractions and temperatures of welds with different fusion ratios.

[0076] In the embodiment of the present application, the calculation conditions of the thermodynamic software are set to limited diffusion in the solid phase and infinite diffusion in the liquid phase.

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

[0078] In an embodiment of the present application, the processing flow of the mathematical software includes: extracting the solid phase fraction of the horizontal axis of the solidification curve, and taking the square root of the solid phase fraction of the horizontal axis; taking the derivative of the solid phase fraction after the square root with respect to the 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 whose solid phase fraction is less than the preset step size according to the preset step size, and determining the thermal cracking sensitivity index based on the maximum value.

[0079] It should be noted that the above explanation of the embodiment of the low thermal cracking sensitivity welding method for adjusting the fusion ratio is also applicable to the low thermal cracking sensitivity welding device for adjusting the fusion ratio of this embodiment, and will not be repeated here.

[0080] According to the low thermal crack sensitivity welding device for adjusting the fusion ratio proposed in the embodiment of the present application, through the synergistic effect of the acquisition module, the extraction module and the control module, the solidification curves between the solid phase fraction and the temperature of the welds with different fusion ratios can be obtained, and the thermal crack sensitivity index can be extracted therefrom, and then the target fusion ratio is selected according to the thermal crack sensitivity index, and the welding machine is controlled to perform the welding action. The device has low cost and easy operation, can quickly obtain low thermal crack sensitivity weld joints, and is universal to various alloys and various fusion welding methods, and is suitable for promotion and use in industrial production.

[0081] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

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

[0083] When the processor 502 executes the program, the low thermal cracking sensitivity welding method for adjusting the fusion ratio provided in the above embodiment is implemented.

[0084] Furthermore, the electronic device also includes:

[0085] The communication interface 503 is used for communication between the memory 501 and the processor 502 .

[0086] The memory 501 is used to store computer programs that can be executed on the processor 502 .

[0087] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0088] If the memory 501, the processor 502 and the communication interface 503 are implemented independently, the communication interface 503, the memory 501 and the processor 502 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) 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 ease of representation, Figure 7 Only one thick line is used in the diagram, but this 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 communicate with each other through an internal interface.

[0090] The processor 502 may 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 embodiment of the present application also provides a computer-readable storage medium on which a computer program or instruction is stored. When the computer program or instruction is executed, the low thermal crack sensitivity welding method with controlled fusion ratio is implemented.

[0092] The embodiment of the present application also provides a computer program product, including a computer program or instructions, which, when executed, implements the above-mentioned low thermal crack sensitivity welding method for regulating the fusion ratio.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0094] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0096] It should be understood that the various parts of the present application can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, the steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0097] A person of ordinary skill in the art may understand that all or part of the steps carried by the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the above-mentioned program may be stored in a computer-readable storage medium, which, when executed, 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 can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A low thermal cracking sensitivity welding method for regulating fusion ratio, characterized in that: The following steps are involved: Obtain the solidification curves between the solid phase fraction and temperature of welds with different fusion ratios; Extracting the hot cracking sensitivity index from the solidification curves of the welds with different fusion ratios; A target fusion ratio is selected according to the thermal crack sensitivity index, and a welding machine is controlled to perform welding according to the target fusion ratio, wherein the thermal crack sensitivity index corresponding to the target fusion ratio is smaller than the thermal crack sensitivity indexes corresponding to other fusion ratios among the different fusion ratios.

2. The low thermal cracking sensitivity welding method for adjusting the fusion ratio according to claim 1, characterized in that: The method of obtaining solidification curves between solid phase fractions and temperatures of welds with different fusion ratios includes: Obtain weld data with different fusion ratios; Identifying different fusion ratio weld components in the different fusion ratio weld data; The solidification curves between the solid phase fraction and the temperature of the welds with different fusion ratios are calculated according to the weld components with different fusion ratios.

3. The low thermal cracking sensitivity welding method for adjusting the fusion ratio according to claim 2, characterized in that: The solidification curves between the solid phase fraction and the temperature of the welds with different fusion ratios are calculated according to the weld components with different fusion ratios, including: The components of the welds with different fusion ratios are input into thermodynamic software, and the thermodynamic software outputs solidification curves between the solid phase fractions and temperatures of the welds with different fusion ratios.

4. The low thermal cracking sensitivity welding method for adjusting the fusion ratio according to claim 3, characterized in that: The calculation conditions of the thermodynamic software are set as limited diffusion in the solid phase and infinite diffusion in the liquid phase.

5. The low thermal cracking sensitivity welding method for adjusting fusion ratio according to claim 1, characterized in that: The step of extracting the hot cracking sensitivity index from the solidification curves of the welds with different fusion ratios comprises: The solidification curves of the welds with different fusion ratios are input into mathematical software, and the mathematical software outputs a hot cracking sensitivity index.

6. The low thermal cracking sensitivity welding method for adjusting fusion ratio according to claim 5, characterized in that: The processing flow of the mathematical software includes: Extracting the solid phase fraction of the horizontal coordinate of the solidification curve, and taking the square root of the solid phase fraction of the horizontal coordinate; Take the derivative of the solid fraction after square root with respect to the temperature in degrees Celsius and take the absolute value of the derivative; According to a preset step size, the maximum value of the absolute value of the derivative whose solid fraction is less than a preset range is selected, and the hot crack sensitivity index is determined according to the maximum value.

7. A low thermal cracking sensitivity welding device for regulating fusion ratio, characterized in that: include: An acquisition module, used for acquiring solidification curves between solid phase fraction and temperature of welds with different fusion ratios; An extraction module, used to extract the thermal cracking sensitivity index in the solidification curves of the welds with different fusion ratios; A control module is used to select a target fusion ratio according to the thermal crack sensitivity index, and control the welding machine to perform welding according to the target fusion ratio, wherein the thermal crack sensitivity index corresponding to the target fusion ratio is smaller than the thermal crack sensitivity indexes corresponding to other fusion ratios among the different fusion ratios.

8. An electronic device, characterized in that: include: 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 thermal cracking sensitivity welding method for regulating fusion ratio as described in any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program or instruction stored thereon, characterized in that: When the computer program or instruction is executed, the low thermal cracking sensitivity welding method with controlled fusion ratio as claimed in any one of claims 1 to 6 is implemented.

10. A computer program product comprising a computer program or instructions, characterized in that When the computer program or instruction is executed, the low thermal cracking sensitivity welding method with controlled fusion ratio as claimed in any one of claims 1 to 6 is implemented.

Images