Temperature control method for SLM (selective laser melting) molded metal composite material and related device

Abstract

The embodiment of the invention provides a temperature control method for an SLM forming metal composite material and a related device. The method comprises the steps that printing parameters of a target workpiece printed by an SLM printer are obtained; the SLM printer is controlled to print the target workpiece layer by layer according to the printing parameters, and the fan is controlled to keep circulating blowing; after printing of each layer is completed, the surface temperature value of the target workpiece is obtained; the surface temperature value is subjected to temperature analysis, and under the condition that the surface temperature value exceeds a preset safety threshold value range, the SLM printer stops printing, and the fan is controlled to increase the air speed; under the condition that the surface temperature value is reduced to be within the preset safety threshold value range, the SLM printer recovers printing, and the fan is controlled to be adjusted to the normal air speed; and continuously controlling the SLM printer to print the subsequent layers of the target workpiece according to the printing parameters until all the layers of the target workpiece are printed. Therefore, the embodiment of the invention can realize an automatic and intelligent manufacturing process.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of selective laser melting, and in particular to a temperature control method and related devices for SLM molding of metal composite materials. Background Art

[0002] The application of Selective Laser Melting (SLM) technology in multi-material printing has brought new opportunities to the manufacturing industry, especially in the production of functional gradient materials and composite materials. However, with the diversification of material types and properties, the importance of temperature control in the SLM printing process has become increasingly prominent. Temperature control plays a vital role in the SLM multi-material printing process. Reasonable temperature management can not only improve the bonding quality and performance of materials, but also effectively reduce production costs and improve production efficiency. In the existing SLM (selective laser melting) technology, the temperature control of multi-material printing mainly relies on a passive cooling system, which uses a fixed cooling time and lacks automated and intelligent temperature control methods, making it difficult to dynamically adjust according to real-time temperature data. This makes the existing technology unable to effectively cope with the challenges brought by temperature fluctuations when facing complex multi-material printing processes. Summary of the invention

[0003] The embodiments of the present invention provide a temperature control method and related devices for SLM forming of metal composite materials. By comprehensively applying intelligent temperature control and active cooling strategies, the method aims to overcome the defects of existing SLM technology, shorten the cooling time, improve production efficiency, reduce energy consumption, and realize an automated and intelligent manufacturing process.

[0004] In a first aspect, an embodiment of the present invention provides a temperature control method for SLM-molded metal composite materials, which is applied to an SLM printer, wherein the SLM printer has a control module, a temperature measuring camera, a data processing unit, and a fan, wherein the temperature measuring camera, the data processing unit, and the fan are electrically connected to the control module, respectively, and include:

[0005] Acquire printing parameters of the SLM printer for printing a target workpiece, wherein the printing parameters include laser power, printing speed, material properties of the target workpiece, and cooling strategy;

[0006] Controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters, and controlling the fan to keep circulating air;

[0007] After each layer is printed, the surface temperature value of the target workpiece is obtained through the temperature measuring camera;

[0008] Sending the surface temperature value to the data processing unit for temperature analysis to obtain a temperature analysis result;

[0009] When the temperature analysis result shows that the surface temperature value exceeds a preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed;

[0010] When the surface temperature value drops to within a preset safety threshold, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed;

[0011] The SLM printer is continuously controlled to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

[0012] In some embodiments, controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters includes:

[0013] determining material properties of the target workpiece;

[0014] Printing the target workpiece layer by layer according to the material properties;

[0015] During the layer-by-layer printing process, the surface temperature value of the target workpiece is monitored in real time;

[0016] adjusting a printing state of the SLM printer according to the surface temperature value;

[0017] During the layer-by-layer printing process, a corresponding cooling strategy is determined according to the material properties of the target workpiece;

[0018] The target workpiece is cooled according to the cooling strategy.

[0019] In some embodiments, adjusting the printing state of the SLM printer according to the real-time temperature data includes:

[0020] Determining the laser power and printing speed of the SLM printer according to the surface temperature value of the target workpiece;

[0021] The target workpiece is printed layer by layer according to the laser power and the printing speed.

[0022] In some embodiments, the cooling strategy includes cooling time and fan speed, and cooling the target workpiece according to the cooling strategy includes:

[0023] During the cooling time, the fan is controlled to increase the wind speed to cool the target workpiece.

[0024] In some embodiments, the method further comprises:

[0025] The surface temperature value, printing status and control options of the target workpiece are displayed through a graphical user interface GUI.

[0026] In some embodiments, the method further comprises:

[0027] After printing is completed, the target workpiece is post-processed and quality inspected.

[0028] In some embodiments, the SLM printer has a molding chamber, the temperature measuring camera is arranged above the molding chamber, the field of view of the temperature measuring camera covers the target workpiece, the fan is deployed inside the molding chamber, and the data processing unit adopts a high-performance microcontroller.

[0029] In a second aspect, an embodiment of the present invention further provides a temperature control device for SLM forming of metal composite materials, the device comprising:

[0030] The first module is used to obtain printing parameters of the SLM printer for printing a target workpiece, wherein the printing parameters include laser power, printing speed, material properties of the target workpiece, and cooling strategy;

[0031] The second module is used to control the SLM printer to print the target workpiece layer by layer according to the printing parameters, and control the fan to keep circulating air;

[0032] The third module is used to obtain the surface temperature value of the target workpiece through a temperature measuring camera after each layer is printed;

[0033] The fourth module is used to send the surface temperature value to a data processing unit for temperature analysis to obtain a temperature analysis result;

[0034] The fifth module is used for, when the temperature analysis result shows that the surface temperature value exceeds a preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed;

[0035] The sixth module is used for, when the surface temperature value drops to a preset safety threshold range, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed;

[0036] The seventh module is used to continue to control the SLM printer to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

[0037] In a third aspect, an embodiment of the present invention further provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the temperature control method for SLM formed metal composite materials as described in the first aspect is implemented.

[0038] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the temperature control method for SLM forming of metal composite materials as described in the first aspect.

[0039] According to an embodiment of the present invention, a temperature control method and a related device for SLM forming of metal composite materials are provided, wherein the temperature control method for SLM forming of metal composite materials is applied to an SLM printer, the SLM printer has a control module, a temperature measuring camera, a data processing unit and a fan, the temperature measuring camera, the data processing unit and the fan are electrically connected to the control module respectively, and the temperature control method for SLM forming of metal composite materials comprises: obtaining printing parameters of the SLM printer for printing a target workpiece, the printing parameters comprising laser power, printing speed, material properties of the target workpiece and cooling strategy; controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters, and controlling the fan to keep circulating air; after each layer is printed, obtaining the surface temperature value of the target workpiece through the temperature measuring camera; sending the surface temperature value to the data processing unit for temperature analysis to obtain a temperature analysis result; when the temperature analysis result shows that the surface temperature value exceeds a preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed; when the surface temperature value drops to within the preset safety threshold range, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed; and continuing to control the SLM printer to print subsequent layers of the target workpiece according to the printing parameters until all layers of the target workpiece are printed. Based on this, the embodiments of the present invention aim to overcome the defects of the existing SLM technology, shorten the cooling time, improve production efficiency, reduce energy consumption, and realize an automated and intelligent manufacturing process through the comprehensive application of intelligent temperature control and active cooling strategies. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a main flow chart of a temperature control method for SLM-molded metal composite materials provided by an embodiment of the present invention;

[0041] Figure 2 This is a working diagram of a temperature control method for SLM forming of metal composite materials provided by an embodiment of the present invention;

[0042] Figure 3 is a schematic diagram of a temperature control device for SLM forming of a metal composite material provided by an embodiment of the present invention;

[0043] Figure 4 is a schematic diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification and claims and the following drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0046] In the embodiments of the present invention, the words "further", "exemplarily" or "optionally" are used to indicate examples, illustrations or descriptions, and should not be interpreted as being more preferred or more advantageous than other embodiments or designs. The use of the words "further", "exemplarily" or "optionally" is intended to present related concepts in a specific way.

[0047] First, several terms involved in the present invention are analyzed:

[0048] Selective Laser Melting (SLM): Selective laser melting is an additive manufacturing technology that uses laser to melt metal powder layer by layer.

[0049] Temperature control method: refers to the process of optimizing the melting and solidification of materials by controlling temperature changes during SLM multi-material printing.

[0050] In order to more conveniently describe the working principle of the embodiment of the present invention later, an introduction to relevant technical scenarios is first given below.

[0051] The application of selective laser melting technology in multi-material printing has brought new opportunities to the manufacturing industry, especially in the production of functional gradient materials and composite materials. However, with the diversification of material types and properties, the importance of temperature control in the SLM printing process has become increasingly prominent. Temperature control plays a vital role in the SLM multi-material printing process. Reasonable temperature management can not only improve the bonding quality and performance of materials, but also effectively reduce production costs and improve production efficiency.

[0052] In existing SLM (selective laser melting) technology, temperature control of multi-material printing mainly relies on traditional cooling strategies and rules of thumb. The following are some characteristics and limitations of existing technical solutions:

[0053] Passive cooling system: Many existing SLM printing systems use passive cooling solutions to reduce the temperature of the material during the printing process through natural convection or radiation cooling. Although this method is simple, the cooling effect is often not accurately controlled, resulting in uneven temperature distribution, which in turn affects the bonding quality of the material and the mechanical properties of the finished product.

[0054] Fixed cooling time: A fixed inter-layer cooling time is set during the printing process in order to achieve the ideal temperature range. However, this method does not take into account the differences in the characteristics of different materials during the cooling process and may not be able to adapt to various printing conditions, resulting in excessively high or low temperatures in some areas, thus affecting the overall printing quality.

[0055] Insufficient temperature monitoring: In existing technologies, the means of temperature monitoring are relatively limited and often rely on indirect measurement or offline monitoring. This method cannot obtain the actual temperature data of the workpiece surface in real time, resulting in the inability to adjust the laser power or cooling strategy in time during the printing process, increasing the risk of defects.

[0056] Lack of intelligent control: Most current SLM systems lack automated and intelligent temperature control methods, making it difficult to dynamically adjust based on real-time temperature data. This makes it impossible for existing technologies to effectively cope with the challenges brought about by temperature fluctuations when facing complex multi-material printing processes.

[0057] Based on this, the present invention provides a temperature control method and related device for SLM forming metal composite materials. Among them, the temperature control method for SLM forming metal composite materials is applied to an SLM printer, the SLM printer has a control module, a temperature measuring camera, a data processing unit and a fan, the temperature measuring camera, the data processing unit and the fan are electrically connected to the control module respectively, and the temperature control method for SLM forming metal composite materials includes: obtaining the printing parameters of the SLM printer to print the target workpiece, the printing parameters include laser power, printing speed, material properties of the target workpiece and cooling strategy; controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters, and controlling the fan to keep circulating air blowing; after each layer is printed, the surface temperature value of the target workpiece is obtained through the temperature measuring camera; the surface temperature value is sent to the data processing unit for temperature analysis to obtain the temperature analysis result; when the temperature analysis result is that the surface temperature value exceeds the preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed; when the surface temperature value drops to the preset safety threshold range, the SLM printer resumes printing and controls the fan to adjust to the normal wind speed; and continues to control the SLM printer to print subsequent layers of the target workpiece according to the printing parameters until all layers of the target workpiece are printed. Based on this, the embodiments of the present invention aim to overcome the defects of the existing SLM technology, shorten the cooling time, improve production efficiency, reduce energy consumption, and realize an automated and intelligent manufacturing process through the comprehensive application of intelligent temperature control and active cooling strategies.

[0058] The embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0059] like Figure 1 As shown, Figure 1 It is a flow chart of a temperature control method for SLM forming of metal composite materials provided by an embodiment of the present invention. The temperature control method for SLM forming of metal composite materials is applied to an SLM printer. The SLM printer has a control module, a temperature measuring camera, a data processing unit and a fan. The temperature measuring camera, the data processing unit and the fan are electrically connected to the control module respectively. The temperature control method for SLM forming of metal composite materials may include but is not limited to steps S101 to S107.

[0060] Step S101: obtaining printing parameters of the SLM printer for printing the target workpiece, the printing parameters including laser power, printing speed, material properties of the target workpiece and cooling strategy;

[0061] Step S102: Controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters, and controlling the fan to keep circulating air;

[0062] Step S103: After each layer is printed, the surface temperature value of the target workpiece is obtained through a temperature measuring camera;

[0063] Step S104: sending the surface temperature value to a data processing unit for temperature analysis to obtain a temperature analysis result;

[0064] Step S105: When the temperature analysis result shows that the surface temperature value exceeds the preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed;

[0065] Step S106: When the surface temperature value drops to within a preset safety threshold, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed;

[0066] Step S107: Continue to control the SLM printer to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

[0067] It is understandable that the temperature measuring camera and the data processing unit of the embodiment of the present invention constitute a real-time temperature monitoring system, which obtains the temperature data of the workpiece surface in real time to ensure timely response to temperature changes. Among them, the temperature measuring camera can be installed above the molding bin of the SLM printer, which can cover the entire surface of the workpiece and capture the surface temperature value of the workpiece in real time; the data processing unit can use a high-performance microcontroller to receive the surface temperature value of the workpiece and perform real-time processing to determine whether the surface temperature value exceeds the set range.

[0068] It is understood that the control module of the embodiment of the present invention can intelligently adjust the working state of the SLM printer according to the real-time temperature data. The control module adopts an adaptive control algorithm and can calculate the required laser power and printing speed in real time to adapt to different temperature conditions. The control module can be controlled by the user operating the main control software, and the main control software has a user interface, which is an intuitive graphical user interface GUI that can display temperature monitoring data, printing status and control options.

[0069] It is understandable that the embodiment of the present invention adopts an active cooling mechanism, deploys a high-efficiency fan in the molding chamber of the SLM printer, and the fan can adjust the speed to achieve rapid convection cooling through the control module. The operating state of the fan is linked with the temperature monitoring system to ensure that when the temperature exceeds the set value, the printing is paused to quickly reduce the surface temperature of the workpiece, and the fan speed is immediately increased.

[0070] It can be understood that the embodiment of the present invention designs flexible cooling strategies for different materials, that is, corresponding cooling strategies can be set according to the characteristics of different materials of the workpiece, and the workpiece is cooled according to the corresponding cooling strategies, wherein the cooling strategies include but are not limited to cooling time and fan speed.

[0071] It can be understood that step S102 may include: determining the material properties of the target workpiece; printing the target workpiece layer by layer according to the material properties; in the process of layer-by-layer printing, monitoring the surface temperature value of the target workpiece in real time; adjusting the printing state of the SLM printer according to the surface temperature value; in the process of layer-by-layer printing, determining the corresponding cooling strategy according to the material properties of the target workpiece; and cooling the target workpiece according to the cooling strategy.

[0072] It can be understood that adjusting the printing state of the SLM printer according to the real-time temperature data includes: determining the laser power and printing speed of the SLM printer according to the surface temperature value of the target workpiece; and printing the target workpiece layer by layer according to the laser power and printing speed.

[0073] It can be understood that the embodiment of the present invention integrates components such as a control module, a temperature measurement camera, a fan, and a data processing unit into an SLM printer to form an efficient temperature management system and ensure seamless collaboration of various parts.

[0074] Based on this, the temperature control method for SLM forming of metal composite materials according to the embodiment of the present invention has at least the following beneficial effects:

[0075] Achieve precise temperature control: By adding fan convection to the SLM printing equipment and combining it with a real-time temperature monitoring system, precise control of the workpiece surface temperature can be achieved, ensuring that the material temperature is always kept within a safe range during the printing process.

[0076] Reduce interface defects: Through active cooling strategies, the generation of interface compounds caused by excessive temperature is reduced, thereby improving the bonding quality of copper-aluminum bimetallic materials and ensuring that the physical and mechanical properties of the final product meet higher standards.

[0077] Improve real-time monitoring and intelligent control capabilities: Utilize advanced temperature monitoring technology to obtain workpiece surface temperature data in real time, and dynamically adjust the fan operating status through the main control software to enhance the intelligence level of the SLM printing process.

[0078] Improve production efficiency and save energy: Through effective active cooling solutions, shorten cooling time, improve production efficiency, reduce energy consumption, and achieve a more sustainable manufacturing process.

[0079] The present invention aims to overcome the defects of existing SLM technology by comprehensively applying intelligent temperature control and active cooling strategies, and to provide a more reliable solution for multi-material printing, thereby promoting the further development of additive manufacturing technology.

[0080] The temperature control method for SLM forming of metal composite materials of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0081] like Figure 2As shown, Figure 2 A flowchart of a temperature control method for SLM molding of metal composite materials provided by one embodiment of the present invention.

[0082] Preparation stage:

[0083] Material selection: Select a variety of material powders that meet the performance requirements based on the printing needs. The selected materials must have appropriate compatibility in thermal physical parameters such as thermal conductivity and melting point to ensure stable bonding quality during the SLM printing process. By selecting the right material combination, the printing parameters and cooling strategy can be optimized, thereby improving the overall performance and structural reliability of the finished product.

[0084] System settings: Enter printing parameters in the main control software, including laser power, printing speed, material properties and cooling strategy.

[0085] Print start:

[0086] Start printing, start the SLM printer, the laser starts to melt the powder material according to the set parameters, and prints the workpiece combined with the base material layer by layer.

[0087] Temperature monitoring after layer printing:

[0088] Temperature data collection: After each layer is printed, the temperature measuring camera monitors the surface temperature of the workpiece in real time and sends the data to the data processing unit.

[0089] Temperature analysis: The data processing unit analyzes the current temperature to determine whether it exceeds the set safety range.

[0090] Fans running continuously vs. active cooling:

[0091] Continuous air circulation: The fan in the build chamber is always on, responsible for circulating air to remove smoke and ash generated during the printing process.

[0092] Increase wind speed: If the monitored temperature exceeds the set range, the control module controls the fan to increase the wind speed to achieve active cooling, accelerate the cooling airflow, and quickly take away excess heat.

[0093] Temperature recovery monitoring:

[0094] Continue to monitor the temperature: While the fan is increasing the wind speed for cooling, continue to monitor the surface temperature of the workpiece and update the data in real time.

[0095] Determine whether the temperature has recovered: When the temperature drops to within the predetermined safety range, the system sends a signal to resume printing.

[0096] Resume printing:

[0097] Stop fan acceleration: Once the temperature returns to a safe range, the control module adjusts the fan to normal wind speed to maintain circulating air.

[0098] Continue printing: The main control software instructs the printer to resume the printing process and continue printing subsequent layers according to the preset parameters.

[0099] Printing completed:

[0100] Finish printing all layers: The printing process ends when all layers of the workpiece are completed.

[0101] Post-processing and inspection: Post-process and inspect the quality of the printed workpiece to ensure that the finished product meets the requirements.

[0102] Based on this, through this workflow, the present invention achieves precise temperature control of the SLM printing process, ensuring that the wind speed is increased for active cooling after each layer is printed, thereby improving printing quality and efficiency, and effectively removing smoke and ash generated during the printing process.

[0103] It is understandable that the embodiment of the present invention adopts a real-time temperature monitoring system: a temperature measuring camera is introduced to monitor the surface temperature of the workpiece in real time during the SLM printing process to ensure timely acquisition of temperature data for dynamic adjustment.

[0104] It is understandable that the embodiment of the present invention adopts an active cooling strategy: a fan is added to the molding chamber of the SLM printing device to achieve active cooling by accelerating the airflow. When printing is paused, the fan can speed up and quickly take away excess heat to prevent defects caused by excessive temperature.

[0105] It is understandable that the embodiment of the present invention adopts an intelligent control mechanism: the fan operation status and the printing status are automatically associated through the control module, ensuring that printing is automatically paused and the fan is started when the temperature exceeds the set range, and printing is continued after the temperature recovers.

[0106] It can be understood that the embodiment of the present invention is suitable for multi-material printing: this solution can flexibly adjust the cooling strategy according to the characteristics of different materials, ensure optimal temperature control in multi-material SLM printing, and improve product quality.

[0107] Based on this, compared with the prior art, the temperature control method for SLM forming metal composite materials of the present invention has at least the following beneficial effects:

[0108] Precise temperature control: The present invention adopts a real-time temperature monitoring system, which uses a temperature measuring camera to obtain the workpiece surface temperature data in real time, and can accurately control the temperature of the material during the printing process. Compared with the passive cooling or fixed cooling time in the prior art, this precise temperature control significantly reduces the impact of temperature fluctuations on printing quality.

[0109] Active cooling mechanism: Active cooling is achieved by adding a fan to the molding chamber. When printing is paused, the fan speed is increased to quickly remove excess heat. This active cooling strategy is superior to the passive cooling solution of existing technologies in terms of efficiency and effect, and can more effectively prevent the occurrence of interface defects.

[0110] Intelligent control: The present invention integrates an intelligent control mechanism. The control module can dynamically adjust the operating status of the fan according to real-time temperature data. Compared with the system in the prior art that lacks real-time adjustment capabilities, it improves the flexibility and response speed of temperature management.

[0111] Strong adaptability: The cooling strategy of the present invention can be flexibly adjusted according to the characteristics of different materials, effectively coping with temperature changes during multi-material printing. However, the existing technology often adopts a fixed cooling strategy, which cannot fully consider the differences between different materials and easily leads to defects.

[0112] Improve production efficiency: Through effective temperature control, defects and post-processing requirements during printing are reduced, thereby improving overall production efficiency. Compared with the prior art, which often requires multiple post-processing to eliminate defects, the present invention has more advantages in quality control.

[0113] Resource conservation: By reducing defects caused by improper temperature control, the present invention can reduce material waste and post-processing costs, thereby achieving higher resource utilization efficiency in the production process.

[0114] In addition, if Figure 3 As shown, one embodiment of the present invention further discloses a temperature control device for SLM forming of metal composite materials, the device comprising:

[0115] The first module 110 is used to obtain printing parameters of the SLM printer for printing the target workpiece, the printing parameters including laser power, printing speed, material properties of the target workpiece and cooling strategy;

[0116] The second module 120 is used to control the SLM printer to print the target workpiece layer by layer according to the printing parameters, and control the fan to keep circulating air;

[0117] The third module 130 is used to obtain the surface temperature value of the target workpiece through a temperature measuring camera after each layer is printed;

[0118] The fourth module 140 is used to send the surface temperature value to the data processing unit for temperature analysis to obtain a temperature analysis result;

[0119] The fifth module 150 is used to stop the SLM printer from printing and control the fan to increase the wind speed when the temperature analysis result shows that the surface temperature value exceeds the preset safety threshold range;

[0120] The sixth module 160 is used for, when the surface temperature value drops to within a preset safety threshold range, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed;

[0121] The seventh module 170 is used to continue to control the SLM printer to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

[0122] The temperature control device for SLM molded metal composite materials in the embodiment of the present invention is used to execute the temperature control method for SLM molded metal composite materials in the above embodiment. Its specific processing process is the same as the temperature control method for SLM molded metal composite materials in the above embodiment, and will not be repeated here.

[0123] In addition, if Figure 4 As shown, an embodiment of the present invention further discloses an electronic device, comprising: at least one processor 210; at least one memory 220, for storing at least one program; when the at least one program is executed by the at least one processor 210, a temperature control method for SLM formed metal composite materials as in any of the previous embodiments is implemented.

[0124] In addition, an embodiment of the present invention further discloses a computer-readable storage medium, in which computer-executable instructions are stored. The computer-executable instructions are used to execute the temperature control method for SLM forming of metal composite materials as in any of the previous embodiments.

[0125] The system architecture and application scenarios described in the embodiments of the present invention are intended to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation on the technical solutions provided by the embodiments of the present invention. Those skilled in the art will appreciate that with the evolution of the system architecture and the emergence of new application scenarios, the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.

[0126] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0127] In hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some physical components or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically embodies computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media.

[0128] The terms "component", "module", "system", etc. used in this specification are used to represent computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. By way of illustration, both applications running on a computing device and a computing device can be components. One or more components may reside in a process or an execution thread, and a component may be located on a computer or distributed between two or more computers. In addition, these components may be executed from various computer-readable media having various data structures stored thereon. Components may communicate, for example, through local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems through signals).

Claims

1. A temperature control method for SLM-molded metal composite materials, characterized in that: Applied to an SLM printer, the SLM printer has a control module, a temperature measuring camera, a data processing unit and a fan, the temperature measuring camera, the data processing unit and the fan are electrically connected to the control module respectively, including: Acquire printing parameters of the SLM printer for printing a target workpiece, wherein the printing parameters include laser power, printing speed, material properties of the target workpiece, and cooling strategy; Controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters, and controlling the fan to keep circulating air; After each layer is printed, the surface temperature value of the target workpiece is obtained through the temperature measuring camera; Sending the surface temperature value to the data processing unit for temperature analysis to obtain a temperature analysis result; When the temperature analysis result shows that the surface temperature value exceeds a preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed; When the surface temperature value drops to within a preset safety threshold, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed; The SLM printer is continuously controlled to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

2. The temperature control method for SLM forming metal composite materials according to claim 1, characterized in that: The step of controlling the SLM printer to print the target workpiece layer by layer according to the printing parameters includes: determining material properties of the target workpiece; Printing the target workpiece layer by layer according to the material properties; During the layer-by-layer printing process, the surface temperature value of the target workpiece is monitored in real time; adjusting a printing state of the SLM printer according to the surface temperature value; During the layer-by-layer printing process, a corresponding cooling strategy is determined according to the material properties of the target workpiece; The target workpiece is cooled according to the cooling strategy.

3. The temperature control method for SLM forming metal composite materials according to claim 2, characterized in that: The step of adjusting the printing state of the SLM printer according to the real-time temperature data comprises: Determining the laser power and printing speed of the SLM printer according to the surface temperature value of the target workpiece; The target workpiece is printed layer by layer according to the laser power and the printing speed.

4. The temperature control method for SLM forming metal composite materials according to claim 2, characterized in that: The cooling strategy includes a cooling time and a fan speed, and the cooling process of the target workpiece according to the cooling strategy includes: During the cooling time, the fan is controlled to increase the wind speed to cool the target workpiece.

5. The temperature control method for SLM forming metal composite materials according to claim 1, characterized in that: The method further comprises: The surface temperature value, printing status and control options of the target workpiece are displayed through a graphical user interface GUI.

6. The temperature control method for SLM forming of metal composite materials according to claim 1, characterized in that: The method further comprises: After printing is completed, the target workpiece is post-processed and quality inspected.

7. The temperature control method for SLM forming of metal composite materials according to claim 1, characterized in that: The SLM printer has a molding chamber, the temperature measuring camera is arranged above the molding chamber, the field of view of the temperature measuring camera covers the target workpiece, the fan is deployed inside the molding chamber, and the data processing unit adopts a high-performance microcontroller.

8. A temperature control device for SLM forming metal composite materials, characterized in that: The device comprises: The first module is used to obtain printing parameters of the SLM printer for printing a target workpiece, wherein the printing parameters include laser power, printing speed, material properties of the target workpiece, and cooling strategy; The second module is used to control the SLM printer to print the target workpiece layer by layer according to the printing parameters, and control the fan to keep circulating air; The third module is used to obtain the surface temperature value of the target workpiece through a temperature measuring camera after each layer is printed; The fourth module is used to send the surface temperature value to a data processing unit for temperature analysis to obtain a temperature analysis result; The fifth module is used for, when the temperature analysis result shows that the surface temperature value exceeds a preset safety threshold range, the SLM printer stops printing and controls the fan to increase the wind speed; The sixth module is used for, when the surface temperature value drops to a preset safety threshold range, the SLM printer resumes printing and controls the fan to adjust to a normal wind speed; The seventh module is used to continue to control the SLM printer to print subsequent layers on the target workpiece according to the printing parameters until all layers of the target workpiece are printed.

9. An electronic device, comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the temperature control method for SLM formed metal composite materials as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the temperature control method for SLM forming of a metal composite material according to any one of claims 1 to 7.

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