Method and device for monitoring welding heat of die-casting material, medium and equipment

Abstract

The invention provides a method and device for monitoring welding heat of a die-casting material, a medium and equipment. The method comprises the steps that operation parameters of a stirring head are collected; wherein the operation parameters represent operation state data of the stirring head in the welding process; temperature information of the welding area is collected; wherein the temperature information of the welding area represents heat data generated in the welding process of the welding area; based on the temperature information of the welding area, operation parameters of the stirring head are adjusted so that the temperature of the welding area can be kept within a preset temperature range; in the welding process, the operation parameters of the stirring head and the temperature information of the welding area are collected in real time, and the operation parameters of the stirring head are adjusted according to the temperature information, so that it is guaranteed that the temperature of the welding area is within the preset proper temperature range, the welding temperature is monitored, and the welding quality and effect are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of friction stir welding, and in particular to a method, device, medium and equipment for monitoring welding heat of die-casting materials. Background Art

[0002] In the field of modern industrial manufacturing, the connection of dissimilar materials (such as aluminum alloy and steel) has become a core demand of many high-tech industries, especially in the application of lightweight structures such as aerospace and automobile manufacturing. Aluminum alloys are widely used due to their light weight and strong corrosion resistance, while steel occupies an important position in key structural parts due to their high strength and wear resistance. However, due to the huge differences in physical and chemical properties between aluminum alloys and steel, traditional welding technology is difficult to form high-quality and stable welds between them. Stir friction welding technology is to locally heat the material to a plastic state through the friction heat generated by the stirring head, and then mix the materials through mechanical stirring to achieve solid-state welding of dissimilar materials. This welding technology avoids the complete melting of the material and significantly reduces the formation of intermetallic compounds. Therefore, it has certain application prospects in the welding of dissimilar materials. However, due to the different chemical properties of aluminum and steel, brittle intermetallic compounds are generated at the interface during welding, which significantly reduces the strength of the welded joint and causes the welded joint to crack easily. During the welding process, the heat generated by the stir head is difficult to monitor and manage in real time. Too high or too low heat input will affect the quality of the weld, especially in the welding of dissimilar materials. Uneven heat distribution may cause local overheating of the material, thereby increasing the amount of intermetallic compounds generated and reducing the mechanical properties of the welded joint. Therefore, a method for monitoring and managing heat input during friction stir welding is urgently needed. Summary of the invention

[0003] In order to solve the above technical problems, the present application is proposed. The embodiments of the present application provide a method, device, medium and equipment for monitoring welding heat of die-casting materials.

[0004] According to one aspect of the present application, a method for monitoring welding heat of die-casting materials is provided, comprising: collecting operating parameters of a stirring head; wherein the operating parameters represent operating status data of the stirring head during welding; collecting temperature information of a welding area; wherein the temperature information of the welding area represents heat data generated by the welding area during welding; and adjusting the operating parameters of the stirring head based on the temperature information of the welding area to maintain the temperature of the welding area within a preset temperature range.

[0005] In one embodiment, the welding heat monitoring method of the die-casting material further includes: calculating the input heat generated during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head; and adjusting the operating parameters of the stirring head based on the input heat.

[0006] In one embodiment, the calculation of the input heat generated during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head includes: calculating the first heat generated by the friction of the shoulder of the stirring head in the welding area based on the operating parameters of the stirring head and the state parameters of the stirring head; calculating the second heat generated by the friction of the stirring needle of the stirring head in the welding area based on the operating parameters of the stirring head and the state parameters of the stirring head; calculating the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head; and calculating the input heat based on the first heat, the second heat and the third heat.

[0007] In one embodiment, the calculation of the first heat generated by the friction of the shoulder of the stirring head in the welding area based on the operating parameters of the stirring head and the state parameters of the stirring head includes: calculating the first heat based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the outer diameter and root radius of the shoulder of the stirring head, the root radius and semi-cone angle of the stirring needle of the stirring head.

[0008] In one embodiment, the calculation of the second heat generated by the friction of the stirring needle portion of the stirring head in the welding area based on the operating parameters of the stirring head and the state parameters of the stirring head includes: calculating the second heat based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the length of the stirring needle of the stirring head, the root radius of the stirring needle, the semi-cone angle of the stirring needle, and the height from the root to the top of the stirring needle.

[0009] In one embodiment, the calculation of the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head includes: calculating the third heat based on the thermal efficiency of the plastic deformation of the metal, the equivalent stress, and the rate of plastic deformation.

[0010] In one embodiment, adjusting the operating parameters of the stirring head based on the input heat includes: adjusting the operating parameters of the stirring head based on the input heat to achieve a difference between a first ratio and a second ratio that is less than a preset difference value; wherein the first ratio is the ratio between the input heat value before adjustment and the operating parameter value before adjustment, and the second ratio is the ratio between the input heat value after adjustment and the operating parameter value after adjustment.

[0011] According to another aspect of the present application, a welding heat monitoring device for die-casting materials is provided, including: an operating parameter acquisition module, used to acquire the operating parameters of a stirring head; wherein the operating parameters represent the operating status data of the stirring head during the welding process; a temperature information acquisition module, used to acquire the temperature information of a welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; an operating parameter adjustment module, used to adjust the operating parameters of the stirring head based on the temperature information of the welding area, so as to maintain the temperature of the welding area within a preset temperature range.

[0012] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the storage medium stores a computer program, and the computer program is used to execute any of the above methods.

[0013] According to another aspect of the present application, an electronic device is provided, comprising: a processor; a memory for storing instructions executable by the processor; and the processor is used to execute any of the above-described methods.

[0014] The present application provides a method, device, medium and equipment for monitoring the welding heat of die-casting materials, which collect the operating parameters of a stirring head; wherein the operating parameters represent the operating status data of the stirring head during the welding process; collect the temperature information of the welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; based on the temperature information of the welding area, adjust the operating parameters of the stirring head to maintain the temperature of the welding area within a preset temperature range; that is, during the welding process, the operating parameters of the stirring head and the temperature information of the welding area are collected in real time, and the operating parameters of the stirring head are adjusted according to the temperature information, so as to ensure that the temperature of the welding area is within a preset appropriate temperature range, thereby realizing the monitoring of the welding temperature and ensuring the welding quality and effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0016] Figure 1 It is a flow chart of a method for monitoring welding heat of die-casting materials provided by an exemplary embodiment of the present application.

[0017] Figure 2 It is a three-dimensional diagram of a welding heat monitoring system for die-casting materials provided by an exemplary embodiment of the present application.

[0018] Figure 3 It is a front view of a welding heat monitoring system for die-casting materials provided by an exemplary embodiment of the present application.

[0019] Figure 4 It is a schematic structural diagram of a welding heat monitoring device for die-casting materials provided by an exemplary embodiment of the present application.

[0020] Figure 5 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application.

[0021] Explanation of the accompanying drawings: 1. stirring head; 2. first sensor; 3. second sensor; 4. first material; 5. second material; 6. control device; 7. spring; 10. electronic device; 11. processor; 12. memory; 13. input device; 14. output device. DETAILED DESCRIPTION

[0022] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0023] Figure 1 FIG. 1 is a flow chart of a method for monitoring the welding heat of a die-casting material provided by an exemplary embodiment of the present application. Figure 1 As shown, the welding heat monitoring method of the die-casting material includes the following steps: Step 110: Collect the operating parameters of the stirring head.

[0024] The operating parameters represent the operating status data of the stirring head during the welding process. The welding heat monitoring method of the die-casting material provided in the present application is applied to the stir friction welding system, such as Figure 2 and Figure 3As shown, the friction stir welding system includes a stirring head 1, a first sensor 2, a second sensor 3, a first material 4, a second material 5, a control device 6 and a spring 7. Among them, the first material 4 and the second material 5 are heterogeneous materials that need to be welded together, such as aluminum alloy, steel or other heterogeneous materials; the stirring head 1 heats the first material 4 and the second material 5 by rotating and pressing down and welds; the first sensor 2 and the second sensor 3 are respectively arranged on the left and right sides of the welding area, and are used to detect the temperature information of the left and right sides of the welding area in real time; the control device 6 is used to receive the temperature information from the first sensor 2 and the second sensor 3, and adjust the operating parameters of the stirring head 1 according to the real-time feedback to ensure that the temperature of the weld area is maintained in the optimal range; the spring 7 is arranged between the first sensor 2 and the first material 4, and between the second sensor 3 and the second material 5, to ensure that the first sensor 2 and the first material 4, the second sensor 3 and the second material 5 are in contact at all times, so as to accurately detect the temperature information of the left and right sides of the welding area. In the welding process, the present application collects the operating parameters of the stirring head 1 in real time, such as the rotation speed, the welding speed, etc., to obtain the working state of the stirring head 1.

[0025] Step 120: Collect temperature information of the welding area.

[0026] The temperature information of the welding area represents the heat data generated by the welding area during the welding process. The present application uses the first sensor 2 and the second sensor 3 to collect the temperature information of the welding area in real time during the welding process to obtain the welding state of the welding area.

[0027] Step 130: Based on the temperature information of the welding area, adjust the operating parameters of the stirring head to maintain the temperature of the welding area within a preset temperature range.

[0028] After obtaining the temperature information of the welding area, the present application adjusts the operating parameters of the stirring head based on the temperature information to maintain the temperature of the welding area within a preset temperature range, thereby ensuring that the welding area is welded within a suitable temperature range, thereby ensuring the quality and effect of welding. Specifically, the present application detects and controls the temperature at the interface between the stirring head 1 and the welding area (for example, less than 400°C) to ensure that the generated intermetallic compound layer remains extremely thin (for example, 2-2.5 nanometers), thereby enhancing the strength of the welded joint.

[0029] The present application provides a method for monitoring the welding heat of die-casting materials, which collects the operating parameters of a stirring head; wherein the operating parameters represent the operating status data of the stirring head during the welding process; collects the temperature information of the welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; based on the temperature information of the welding area, adjusts the operating parameters of the stirring head to maintain the temperature of the welding area within a preset temperature range; that is, during the welding process, the operating parameters of the stirring head and the temperature information of the welding area are collected in real time, and the operating parameters of the stirring head are adjusted according to the temperature information, so as to ensure that the temperature of the welding area is within a preset appropriate temperature range, thereby realizing the monitoring of the welding temperature and ensuring the welding quality and effect.

[0030] Optionally, the present application may use a stirring head 1 with a hemispherical structure, the head radius of the stirring head 1 is half the shoulder diameter, the stirring head 1 is inclined with the surface of the first material 4 and the second material 5, and is inclined to the retreat side of the stirring head 1. Optionally, the inclination angle between the stirring head 1 and the surface of the first material 4 and the second material 5 is 3 degrees. Optionally, the head radius of the stirring head 1 is 7.5 mm, and the shoulder diameter of the stirring head 1 is 15 mm. Optionally, the probe length of the stirring head 1 is 2.1 mm, and the probe diameter of the stirring head 1 is 6 mm. Optionally, the rotation speed of the stirring head 1 is 900 rpm. Optionally, the welding speed of the stirring head is 50 mm / min. For example, when the present application is used to weld aluminum alloy and steel, the thickness of the aluminum alloy is 2 mm, the thickness of the steel is 1.2 mm, and the insertion depth of the stirring head 1 is 2.1 mm to ensure that the tip of the stirring head 1 only rubs the surface of the steel (second material) without penetrating into the steel.

[0031] In one embodiment, the welding heat monitoring method of the above-mentioned die-casting material may also include: calculating the input heat generated during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head; and adjusting the operating parameters of the stirring head based on the input heat.

[0032] When collecting the operating parameters of the stirring head 1 and the temperature information of the welding area in real time, the present application also synchronously calculates the input heat generated during the welding process, so as to regulate the welding process from two dimensions: input heat and welding area temperature, so as to ensure that the heat generated during the welding process and the welding area temperature are controlled within a reasonable range. For example, the upper and lower limits of the welding area temperature and the heat generated during the welding process are respectively set, so as to take into account both the welding quality and efficiency.

[0033] Optionally, the present application can periodically calculate the input heat generated during the welding process, and determine its calculation cycle based on the difference between the welding area temperature and a reasonable range boundary value (such as an upper limit value). Specifically, the calculation cycle can be positively correlated with the difference, that is, the smaller the difference between the welding area temperature and the upper limit value, the smaller the calculation cycle, so that the welding process can be monitored more flexibly.

[0034] Optionally, the present application can also be controlled by calculating the rate of change of the difference between the temperature of the welding area and the boundary value of the reasonable range. Specifically, the rate of change is positively correlated with the adjustment range of the operating parameters of the stirring head. That is, the greater the rate of change of the difference between the temperature of the welding area and the boundary value of the reasonable range (indicating that the temperature of the welding area changes faster at this time), the greater the adjustment range of the operating parameters of the stirring head, thereby enabling a quick response to avoid the temperature of the welding area exceeding the reasonable range due to untimely adjustment.

[0035] Optionally, the present application may select the smaller value of the operating parameters of the stirring head corresponding to the upper limit value of the welding area temperature and the operating parameters of the stirring head corresponding to the upper limit value of the input heat as the operating parameters of the stirring head to ensure that under the current operating parameters, the input heat and the welding area temperature do not exceed the corresponding reasonable range.

[0036] In one embodiment, the specific calculation method of the input heat generated during the welding process can be: based on the operating parameters of the stirring head and the state parameters of the stirring head, the first heat generated by the friction of the shoulder of the stirring head in the welding area is calculated; based on the operating parameters of the stirring head and the state parameters of the stirring head, the second heat generated by the friction of the stirring needle of the stirring head in the welding area is calculated; based on the operating parameters of the stirring head and the state parameters of the stirring head, the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process is calculated; based on the first heat, the second heat and the third heat, the input heat is calculated.

[0037] Specifically, the present application can respectively calculate the first heat generated by the friction of the shoulder of the stirring head in the welding area, the second heat generated by the friction of the stirring needle of the stirring head in the welding area, and the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process, and combine the first heat, the second heat and the third heat to calculate the input heat in the welding process.

[0038] In one embodiment, the specific calculation method of the first heat can be: the first heat is calculated based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the shoulder outer diameter and root radius of the stirring head, the root radius and semi-cone angle of the stirring needle of the stirring head.

[0039] Specifically, the present application may use the following formula to calculate the first heat: ; in, For the first heat, is the rotation speed of the stirring head (rad / s), is the friction coefficient, The axial pressure exerted by the stirring head on the workpiece. are the outer diameter of the shoulder and the root radius of the mixing head, is the root radius of the stirring needle, is the semi-cone angle of the stirring needle.

[0040] In one embodiment, the specific calculation method of the second heat can be: based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the length of the stirring needle of the stirring head, the root radius of the stirring needle, the semi-cone angle of the stirring needle, and the height from the root to the top of the stirring needle, the second heat is calculated.

[0041] Specifically, the present application may use the following formula to calculate the second heat: ; in, For the second heat, is the length of the stirring needle, is the root radius of the mixing head, It is the height from the root to the top of the stirring needle.

[0042] In one embodiment, the specific calculation method of the third heat amount may be: the third heat amount is calculated based on the thermal efficiency of the metal plastic deformation, the equivalent stress, and the rate of the plastic deformation.

[0043] Specifically, the present application may use the following formula to calculate the third heat: ; in, The third heat is the thermal efficiency of plastic deformation, is the equivalent stress, is the plastic strain rate.

[0044] This application calculates the first heat , Second heat and the third heat Finally, the input heat during welding is calculated according to: .

[0045] In one embodiment, the specific adjustment method of the operating parameters of the stirring head can be: based on the input heat, adjust the operating parameters of the stirring head to achieve a difference between the first ratio and the second ratio that is less than a preset difference value; wherein the first ratio is the ratio between the input heat value before adjustment and the operating parameter value before adjustment, and the second ratio is the ratio between the adjusted input heat value and the adjusted operating parameter value.

[0046] After calculating the input heat during welding, the application adjusts the operating parameters of the stirring head according to the input heat. The lower the operating parameters, such as the slower the rotation speed and feed speed of the stirring head, the smaller the input heat generated. However, slow rotation speed and feed speed will result in low welding efficiency. Therefore, the application sets the following adjustment formula under the premise of considering both welding efficiency and welding quality: ; in, are the input calorie value before adjustment and the input calorie value after adjustment, The application balances the welding efficiency and welding quality by controlling the size of the first ratio and the second ratio. During the welding process, if the input heat value before adjustment deviates from the above reasonable range, the control system automatically adjusts the rotation speed or feed speed of the stirring head through the above formula to ensure that the input heat is within a reasonable range while taking into account the welding efficiency.

[0047] After welding is completed, the control device automatically stops adjusting and stores the temperature data, heat input and corresponding parameter adjustment records of each stage of the welding process.

[0048] The welding heat monitoring method and device of the die-casting material provided by the present application have the following advantages: (1) Heat generation is reduced, improving welding accuracy and quality.

[0049] Reducing heat generation directly reduces the temperature of the welding area, effectively avoiding material damage caused by excessive heat and excessive generation of the IMC layer at the interface. Due to the precise control of temperature, the thickness of the IMC layer is only 2 to 2.5 nanometers, which is thinner than the traditional thickness, thus maintaining good welding strength and toughness and reducing the occurrence of brittleness of the welded joint.

[0050] (2) Avoid hook features and internal voids to improve joint strength and reliability.

[0051] The use of a hemispherical stirring head can avoid the generation of defects such as hook features and internal voids, ensuring the integrity and strength of the welded joint. The strength of the welded joint using this method reaches 70%, which is much higher than the welding strength range of traditional tools (usually 50-60%).

[0052] (3) Adapt to various material thicknesses and increase process flexibility.

[0053] The hemispherical stirring head can adapt to different material thicknesses without changing the tool structure, increasing the flexibility of the welding process, improving production efficiency, and reducing downtime and tool replacement costs.

[0054] (4) Improve welding efficiency, save energy and cost.

[0055] By reducing heat generation and welding defects, welding efficiency is improved, energy consumption and material waste are reduced, thereby reducing production costs.

[0056] (5) Enhance material fluidity.

[0057] The hemispherical stirring head can optimize the fluidity of the material during welding through a specific inclination design. The inclination enables the tool to more effectively push the material of the upper plate to the retreat side during welding, while ensuring that the material flows more evenly in the stirring zone. By enhancing the plastic flow of the material, the inclination ensures that the material moves from the forward side to the retreat side, making the weld more uniform and reducing welding defects.

[0058] (6) Improve the surface quality of welded joints.

[0059] The appropriate inclination angle can ensure that the contact surface between the tool head and the material is smoother during the welding process and reduce surface defects that may be caused during the stirring process. The inclination angle can help the tool head maintain uniform pressure distribution during the welding process, avoid overheating or overcooling in local areas, and optimize the surface quality of the welded joint.

[0060] (7) Reduce the occurrence of hook features and cracks.

[0061] Traditional friction stir welding is prone to hook features and solidification cracks when processing dissimilar materials. By setting a certain inclination angle for the hemispherical stirring head, the tool head can better control the insertion depth and material flow pattern, reducing the formation of hook features and the generation of internal cracks (hemispherical friction stir head). The inclination angle helps the hemispherical tool better adapt to the interface between different materials, thereby avoiding uneven stirring between materials and the resulting cracks.

[0062] (8) Reduce tool wear and extend tool life.

[0063] With the help of the inclination angle, the hemispherical stirring head can avoid vertical friction with the workpiece surface, thereby reducing fatigue and wear of the stirring head, which not only improves welding efficiency, but also significantly extends the service life of the stirring head.

[0064] (9) Improve the mechanical properties of welds.

[0065] By controlling the inclination angle, the stirring head can generate finer equiaxed crystals, improve the uniformity of the microstructure of the weld joint, and ultimately improve the mechanical properties of the weld joint. The appropriate inclination angle optimizes the dynamic recrystallization process of the weld area material to generate a more uniform and refined grain structure, thereby enhancing the tensile strength and toughness of the weld joint.

[0066] (10) Reduce heat input and optimize thermal control.

[0067] The inclination angle can also help reduce the contact area of ​​the stirring head, thereby reducing heat input. Since the hemispherical stirring head itself already has a small contact area, the appropriate inclination angle can further reduce heat generation, prevent excessive heat-affected zones, control the formation of intermetallic compounds (IMC), and enable the weld to maintain higher mechanical properties.

[0068] (11) High-precision heat control.

[0069] The temperature changes in the weld area are captured in real time, and the heat calculation module uses the rotation speed, feed speed and other parameters of the stirring head to accurately calculate the welding heat based on the monitored temperature data. When the actual heat does not match the preset range, the system automatically adjusts the welding parameters. This feedback adjustment ensures that the heat input of the entire welding process is always within the optimal range, thereby greatly improving the accuracy of heat control and preventing local overheating or overcooling.

[0070] (12) Reduce the formation of intermetallic compounds.

[0071] During the welding process of dissimilar materials, excessive heat input will lead to excessive generation of intermetallic compounds, thereby reducing the strength and ductility of the weld. By adjusting the heat input in real time, ensuring that the heat remains within the preset optimal range and avoiding excessive generation of intermetallic compounds, the mechanical properties of the weld can be greatly improved.

[0072] (13) Efficient welding to improve weld quality.

[0073] By combining the stirring head design with the feedback control system, the welding equipment can automatically adjust the welding speed and the stirring head rotation speed according to real-time data to ensure uniform mixing of materials in the welding area, avoid welding defects such as pores and cracks caused by uneven heat distribution, and thus improve the overall quality of the weld.

[0074] (14) Adaptive adjustment to improve production efficiency.

[0075] Through the automatic feedback control system, the equipment can automatically adjust the rotation speed and feed speed of the stirring head in real time according to the temperature changes and heat calculation results during the welding process. Such adaptive adjustment reduces pauses and manual adjustments during the welding process, thereby improving production efficiency, adapting to a variety of heterogeneous material welding conditions, and improving the continuity and stability of welding.

[0076] (15) Data can be stored and analyzed to facilitate process optimization.

[0077] After each welding is completed, the system automatically saves the temperature data, heat input, rotation speed, feed speed and other information of the welding process. These data can not only be used to analyze the welding results, but also provide a reference for subsequent process improvements. By accurately recording the data of the welding process, the repeatability of the welding process is greatly improved, and the production process is optimized.

[0078] (16) Suitable for welding of dissimilar materials.

[0079] Due to the different physical properties of dissimilar materials (such as the melting point and thermal expansion coefficient differences between aluminum alloys and steel), welding is difficult and high-quality welding is usually difficult to achieve. Through precise control of heat and temperature, welding defects caused by thermal expansion differences are reduced, ensuring the uniformity and strength of the weld, and significantly improving the welding quality of dissimilar materials.

[0080] Figure 4 Schematic diagram of a welding heat monitoring device for die-casting materials provided by an exemplary embodiment of the present application. Figure 4 As shown, the welding heat monitoring device 40 of the die-casting material includes: an operating parameter acquisition module 41, used to collect the operating parameters of the stirring head; wherein the operating parameters represent the operating status data of the stirring head during the welding process; a temperature information acquisition module 42, used to collect the temperature information of the welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; an operating parameter adjustment module 43, used to adjust the operating parameters of the stirring head based on the temperature information of the welding area, so as to maintain the temperature of the welding area within a preset temperature range.

[0081] The present application provides a welding heat monitoring device for die-casting materials, which collects the operating parameters of the stirring head through an operating parameter acquisition module 41; wherein the operating parameters represent the operating status data of the stirring head during the welding process; the temperature information acquisition module 42 collects the temperature information of the welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; the operating parameter adjustment module 43 adjusts the operating parameters of the stirring head based on the temperature information of the welding area to maintain the temperature of the welding area within a preset temperature range; that is, during the welding process, the operating parameters of the stirring head and the temperature information of the welding area are collected in real time, and the operating parameters of the stirring head are adjusted according to the temperature information, so as to ensure that the temperature of the welding area is within the preset appropriate temperature range, thereby realizing the monitoring of the welding temperature and ensuring the welding quality and effect.

[0082] In one embodiment, the welding heat monitoring device 40 of the above-mentioned die-casting material can be further configured to: calculate the input heat generated during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head; and adjust the operating parameters of the stirring head based on the input heat.

[0083] In one embodiment, the welding heat monitoring device 40 of the above-mentioned die-casting material can be further configured as: based on the operating parameters of the stirring head and the state parameters of the stirring head, calculating the first heat generated by the friction of the shoulder of the stirring head in the welding area; based on the operating parameters of the stirring head and the state parameters of the stirring head, calculating the second heat generated by the friction of the stirring needle of the stirring head in the welding area; based on the operating parameters of the stirring head and the state parameters of the stirring head, calculating the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process; based on the first heat, the second heat and the third heat, calculating the input heat.

[0084] In one embodiment, the welding heat monitoring device 40 of the above-mentioned die-casting material can be further configured to calculate the first heat based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the shoulder outer diameter and root radius of the stirring head, the root radius and semi-cone angle of the stirring needle of the stirring head.

[0085] In one embodiment, the welding heat monitoring device 40 of the above-mentioned die-casting material can be further configured to calculate the second heat based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the length of the stirring needle of the stirring head, the root radius of the stirring needle, the semi-cone angle of the stirring needle, and the height from the root to the top of the stirring needle.

[0086] In one embodiment, the welding heat monitoring device 40 of the die-casting material may be further configured to calculate the third heat based on the thermal efficiency, equivalent stress, and rate of plastic deformation of the metal.

[0087] In one embodiment, the welding heat monitoring device 40 of the above-mentioned die-casting material can be further configured as: based on the input heat, adjusting the operating parameters of the stirring head to achieve a difference between the first ratio and the second ratio that is less than a preset difference value; wherein the first ratio is the ratio between the input heat value before adjustment and the operating parameter value before adjustment, and the second ratio is the ratio between the adjusted input heat value and the adjusted operating parameter value.

[0088] Below, reference Figure 5 The electronic device according to the embodiment of the present application is described. The electronic device may be any one or both of the first device and the second device, or a stand-alone device independent of them, and the stand-alone device may communicate with the first device and the second device to receive the collected input signal from them.

[0089] Figure 5 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0090] like Figure 5 As shown, the electronic device 10 includes one or more processors 11 and a memory 12 .

[0091] The processor 11 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0092] The memory 12 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, a random access memory (RAM) and / or a cache memory (cache), etc. The non-volatile memory may include, for example, a read-only memory (ROM), a hard disk, a flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may run the program instructions to implement the methods of the various embodiments of the present application described above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0093] In one example, the electronic device 10 may further include: an input device 13 and an output device 14 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0094] When the electronic device is a stand-alone device, the input device 13 may be a communication network connector, which is used to receive the collected input signals from the first device and the second device.

[0095] In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.

[0096] The output device 14 can output various information to the outside, including the determined distance information, direction information, etc. The output device 14 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0097] Of course, to simplify, Figure 5 Only some of the components related to the present application in the electronic device 10 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 10 may also include any other appropriate components.

[0098] In addition to the above-mentioned methods and devices, an embodiment of the present application may also be a computer program product, which includes computer program instructions, which, when executed by a processor, enable the processor to execute the steps of the method according to various embodiments of the present application described in the above-mentioned "Exemplary Method" section of this specification.

[0099] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0100] In addition, an embodiment of the present application may also be a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the processor executes the steps of the method according to various embodiments of the present application described in the above "Exemplary Method" section of this specification.

[0101] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media 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.

[0102] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0103] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0104] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0105] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0106] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A method for monitoring welding heat of die-casting materials, characterized in that: include: Collecting operating parameters of the stirring head; wherein the operating parameters represent operating status data of the stirring head during the welding process; Collecting temperature information of the welding area; wherein the temperature information of the welding area represents the heat data generated by the welding area during the welding process; Based on the temperature information of the welding area, the operating parameters of the stirring head are adjusted to maintain the temperature of the welding area within a preset temperature range.

2. The method for monitoring welding heat of die-casting materials according to claim 1, characterized in that: The welding heat monitoring method of the die-casting material also includes: Calculating the input heat generated during welding based on the operating parameters of the stirring head and the state parameters of the stirring head; Based on the input heat, operating parameters of the stirring head are adjusted.

3. The method for monitoring welding heat of die-casting materials according to claim 2, characterized in that: The calculating of the input heat generated during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head includes: Calculating a first heat generated by friction of a shoulder of the stirring head in the welding area based on an operating parameter of the stirring head and a state parameter of the stirring head; Calculating a second amount of heat generated by friction of a stirring needle portion of the stirring head in the welding area based on an operating parameter of the stirring head and a state parameter of the stirring head; Calculating a third amount of heat generated by plastic deformation of the stirring head and the metal in the welding area during the welding process based on the operating parameters of the stirring head and the state parameters of the stirring head; The input heat amount is calculated based on the first heat amount, the second heat amount, and the third heat amount.

4. The method for monitoring welding heat of die-casting materials according to claim 3, characterized in that: The step of calculating the first heat generated by the friction of the shoulder of the stirring head in the welding area based on the operating parameters of the stirring head and the state parameters of the stirring head comprises: The first heat is calculated based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the shoulder outer diameter and root radius of the stirring head, the root radius and semi-cone angle of the stirring needle of the stirring head.

5. The method for monitoring welding heat of die-casting materials according to claim 1, characterized in that: The calculating, based on the operating parameters of the stirring head and the state parameters of the stirring head, the second heat generated by the friction of the stirring needle portion of the stirring head in the welding area comprises: The second heat is calculated based on the rotation speed of the stirring head, the axial pressure applied by the stirring head on the welding workpiece, the friction coefficient between the stirring head and the welding workpiece, the length of the stirring needle of the stirring head, the root radius of the stirring needle, the semi-cone angle of the stirring needle, and the height from the root to the top of the stirring needle.

6. The method for monitoring welding heat of die-casting materials according to claim 1, characterized in that: The calculating, based on the operating parameters of the stirring head and the state parameters of the stirring head, of the third heat generated by the plastic deformation of the stirring head and the metal in the welding area during the welding process comprises: The third heat is calculated based on the thermal efficiency, equivalent stress and rate of plastic deformation of the metal.

7. The method for monitoring welding heat of die-casting materials according to claim 2, characterized in that: The step of adjusting the operating parameters of the stirring head based on the input heat comprises: Based on the input heat, the operating parameters of the stirring head are adjusted to achieve a difference between the first ratio and the second ratio that is less than a preset difference value; wherein the first ratio is the ratio between the input heat value before adjustment and the operating parameter value before adjustment, and the second ratio is the ratio between the input heat value after adjustment and the operating parameter value after adjustment.

8. A welding heat monitoring device for die-casting materials, characterized in that: include: An operating parameter acquisition module, used to acquire operating parameters of the stirring head; wherein the operating parameters represent operating status data of the stirring head during welding; A temperature information acquisition module is used to acquire temperature information of a welding area; wherein the temperature information of the welding area represents heat data generated by the welding area during the welding process; The operating parameter adjustment module is used to adjust the operating parameters of the stirring head based on the temperature information of the welding area to maintain the temperature of the welding area within a preset temperature range.

9. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 7.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is used to execute the method described in any one of claims 1 to 7.

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