Shell die-casting cooling method and system

Abstract

The invention relates to the technical field of die-casting processes, in particular to a shell die-casting cooling method and system.The method comprises the steps that the shell die-casting cooling process is simulated and analyzed through computer simulation software according to shell features, and the optimal layout and size of a cooling pipeline in a die-casting die are determined; a determined cooling pipeline is machined on the die-casting die, and a temperature sensor and a flow control valve are installed to monitor the temperature of the shell in each area and the temperature and flow of a cooling medium in the cooling process in real time; molten metal is injected into the die-casting die, and an air cooling system is started for primary air cooling; after the shell is preliminarily formed, a water cooling system is started, and sectional type cooling is adopted according to a computer software simulation result; the temperature sensor collects shell temperature data in real time and transmits the shell temperature data to the control system in real time, and the control system automatically adjusts the flow and temperature of a cooling medium through the flow control valve according to a preset temperature curve. And after water cooling is finished, the air cooling system is started again, and secondary air cooling is conducted on the shell.

Description

Technical Field

[0001] The present invention relates to the technical field of die-casting processes, and particularly to a cooling method and system for housing die-casting. Background Art

[0002] In the production of housing die-casting, the cooling link plays a decisive role in product quality and production efficiency. Traditional cooling technologies have many deficiencies. For example, the cooling methods are single and most rely only on one of air cooling or water cooling, and it is impossible to perform targeted cooling according to different stages of the die-casting process and the complex structure of the housing; the cooling process lacks precise control, and it is difficult to adjust the cooling parameters according to the real-time temperature changes of the mold and the housing, resulting in uneven stress distribution inside the housing, and defects such as deformation, shrinkage cavities, and cracks are likely to occur, seriously affecting the dimensional accuracy and mechanical properties of the product. In addition, unreasonable cooling methods will also cause energy waste and increase production costs. Therefore, developing a cooling method that can be precisely controlled, energy-efficient, and applicable to different housing die-castings has become an urgent problem in the industry. Summary of the Invention

[0003] In view of the above technical deficiencies, the present invention provides a cooling method and system for housing die-casting, which can accurately collect the temperatures of various regions during the cooling process and analyze them, and adjust the cooling strategy according to the analysis results.

[0004] The present invention is achieved through the following technical solutions:

[0005] A cooling method for housing die-casting is provided, and the method includes the following steps:

[0006] Step S10: According to the shape, size, and wall thickness of the housing, use computer simulation software to simulate and analyze the cooling process to determine the optimal layout and size of the cooling pipes in the die-casting mold for housing die-casting;

[0007] Step S20: Process the determined cooling pipes on the die-casting mold, and install temperature sensors and flow control valves to monitor the temperatures of various regions of the housing and the temperatures and flows of the cooling medium in real time during the cooling process;

[0008] Step S30: Inject the molten metal into the die-casting mold, first turn on the air cooling system to perform primary air cooling on the mold surface, and turn on the water cooling system after the housing is initially formed, and adopt segmented cooling according to the computer simulation results;

[0009] Step S40: The temperature sensors collect the temperature data of the housing and the cooling medium in real time and transmit it to the control system in real time. The control system automatically adjusts the flow of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, turn on the air cooling system again to perform secondary air cooling on the housing;

[0010] Among them, in step S30, the air-cooling system is first turned on to perform primary air-cooling on the mold surface. The wind speed and air volume of the air-cooling are dynamically adjusted according to different die-casting stages. For example, when the molten metal is just injected, a lower wind speed is used for air-cooling to avoid abnormal flow of the molten metal. As the die-casting progresses, the wind speed is gradually increased to accelerate the primary cooling speed.

[0011] Preferably, in step S10, a computer simulation software is used to simulate and analyze the cooling process to determine the optimal layout and size of the cooling pipes. The cooling process is simulated by the computer to obtain data such as the temperature change and stress distribution of the housing under different cooling conditions, and the optimal layout and size of the cooling pipes in the die-casting mold are determined according to the obtained data.

[0012] Preferably, in step S20, temperature sensors and flow control valves are installed to real-time monitor the temperature of each area of the housing and the temperature and flow rate of the cooling medium during the cooling process. The installation positions include:

[0013] Cooling pipes: Temperature sensors of the cooling pipes are installed at the inlet and outlet of the cooling pipes to real-time monitor the inlet temperature and outlet temperature of the cooling medium when flowing into and out of the mold. The flow control valve of the cooling pipes is installed at the inlet of the cooling pipes to adjust the flow rate of the cooling medium flowing into the cooling pipes according to the instructions of the control system;

[0014] Where the wall thickness of the housing increases: A housing temperature sensor is installed at the corresponding position of the mold in the area where the wall thickness of the housing increases. Since the heat transfer difference is large in the area where the wall thickness increases and stress concentration is likely to occur, the housing temperature sensor real-time collects the temperature data of the housing. When an abnormal temperature is detected, the control system sends an instruction to the flow control valve of the cooling pipes to adjust the flow rate of the cooling medium in the cooling pipes near this area to balance the cooling speed of different wall thickness parts and reduce stress generation;

[0015] Core: The core is an important component for forming the internal structure of the housing, and the solidification situation of the molten metal around it is crucial for the product quality. Core temperature sensors are evenly distributed on the mold wall around the core to real-time monitor the temperature change around the core. At the same time, a core flow control valve is installed at the branch of the corresponding cooling pipe close to the core to adjust the flow rate of the cooling medium in a timely manner according to the temperature change to prevent defects such as shrinkage cavities and porosity from appearing around the core and ensure the integrity of the internal structure of the housing;

[0016] Gate: As the inlet for the molten metal to enter the mold cavity, the molten metal near the gate has a fast flow rate and a high temperature, and the cooling process is complex. A gate temperature sensor is installed on the mold surface around the gate to real-time monitor the temperature change in the gate area. A gate flow control valve is installed on the main pipeline connecting the cooling pipes near the gate to adjust the flow rate of the cooling medium according to the temperature change to ensure the smooth solidification of the molten metal at the gate and avoid problems such as gate cold shut and shrinkage marks.

[0017] Preferably, in step S30, when injecting the molten metal into the die-casting mold, first turn on the air-cooling system to perform primary air-cooling on the mold surface. After the shell is initially formed, turn on the water-cooling system. The steps of adopting segmented cooling according to the computer simulation results include:

[0018] Primary air-cooling: When performing primary air-cooling, dynamically adjust the air speed and air volume of the air-cooling according to the injection state of the liquid metal. When the molten metal is just injected, in order to avoid splashing and abnormal flow of the molten metal, use the initial air speed V1 for air-cooling. As the die-casting process progresses, gradually increase the air speed to V2 to accelerate the cooling speed until the molten metal is initially solidified and formed;

[0019] Segmented water-cooling: After the molten metal is initially solidified and formed, according to the computer simulation results in step S10, adopt a segmented water-cooling strategy. For the area where the shell wall thickness is greater than or equal to half of the maximum shell wall thickness, first introduce the cooling medium to accelerate the cooling and solidification of this area. Then, the flow control valve of the cooling pipeline reduces the flow rate of the cooling medium according to the data feedback by the shell temperature sensor to make the entire shell cool evenly. For the area where the shell wall thickness is less than half of the maximum shell wall thickness, further finely adjust and reduce the flow rate of the cooling medium.

[0020] Preferably, the preset temperature curve and stress control range in step S40 are obtained by computer software simulation analysis. Edit the temperature data collected by each temperature sensor in real time into a real-time temperature curve. By comparing the real-time temperature curve and the preset temperature curve, judge whether the current cooling process meets the expectations. When the real-time temperature in a certain area is higher or lower than the preset deviation range, generate corresponding instructions according to the preset regulation strategy and send them to the flow control valve in the corresponding area. The flow control valve automatically adjusts the flow rate of the cooling medium according to the instructions.

[0021] In addition, to achieve the above object, the present invention also proposes a shell die-casting cooling system, and the shell die-casting cooling system includes:

[0022] Cooling pipeline design module: used to determine the optimal layout and size of the cooling pipeline by using computer simulation software to simulate and analyze the cooling process according to the shape, size and wall thickness of the shell;

[0023] Shell temperature and cooling medium flow monitoring module: used to process the determined cooling pipeline on the die-casting mold and install temperature sensors and flow control valves to monitor the temperature of each area and the flow rate of the cooling medium in real time during the cooling process;

[0024] Primary air-cooling and water-cooling module: Inject the molten metal into the die-casting mold, first turn on the air-cooling system to perform primary air-cooling on the mold surface. After the shell is initially formed, turn on the water-cooling system and adopt segmented cooling according to the computer simulation results;

[0025] Cooling medium automatic regulation and secondary air cooling module: It is used for the temperature sensor to collect the temperature data of the mold and the shell in real time and transmit it to the control system in real time. The control system automatically regulates the flow rate of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, the air cooling system is turned on again to perform secondary air cooling on the shell;

[0026] In the primary air cooling and water cooling module, the air cooling system is first turned on to perform primary air cooling on the surface of the mold. The wind speed and air volume of the air cooling are dynamically adjusted according to different stages of die casting. For example, when the molten metal is just injected, a lower wind speed is used for air cooling to avoid abnormal flow of the molten metal. As die casting progresses, the wind speed is gradually increased to accelerate the primary cooling speed.

[0027] In addition, to achieve the above object, the present invention also proposes a shell die-casting cooling device, which includes: a memory, a processor, and programs such as a flow control valve automatic regulation algorithm stored on the memory and executable on the processor. The programs such as the flow control valve automatic regulation algorithm are steps to implement a shell die-casting cooling method as described above.

[0028] In addition, to achieve the above object, the present invention also provides a computer program product, which includes programs such as a flow control valve automatic regulation algorithm. When the programs such as the flow control valve automatic regulation algorithm are executed by a processor, they implement a shell die-casting cooling method as described above.

[0029] The advantages and effects of the present invention are:

[0030] A shell die-casting cooling method and system proposed by the present invention improve the cooling efficiency, shorten the production cycle, significantly improve the cooling quality of the shell, and reduce the scrap rate through a multi-stage and precise control cooling strategy, combined with air cooling and water cooling; at the same time, through real-time monitoring and intelligent automatic regulation, energy-saving optimization of the shell die-casting cooling process is achieved, and the production cost is reduced. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a flowchart of a shell die-casting cooling method of the present invention.

[0033] Figure 2 It is a schematic structural diagram of a shell die-casting cooling system of the present invention.

[0034] Figure 3 This is a schematic block diagram of the structure of a housing die-casting cooling electronic device according to the present invention. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1, as Figure 1 shown, the present invention provides a housing die-casting cooling method, including the following steps:

[0037] Step S10: According to the shape, size, and wall thickness of the housing, use computer simulation software to simulate and analyze the cooling process to determine the optimal layout and size of the cooling pipes in the die-casting mold for die-casting the housing.

[0038] Specifically, in step S10, using computer simulation software to simulate and analyze the cooling process to determine the optimal layout and size of the cooling pipes is to simulate the cooling process by computer, obtain data such as the temperature change and stress distribution of the housing under different cooling conditions, and determine the optimal layout and size of the cooling pipes in the die-casting mold according to the obtained data.

[0039] Taking an aluminum alloy housing with a complex structure as an example, first use professional CAE simulation software to simulate its die-casting cooling process. In the simulation software, accurately input the three-dimensional model of the housing, aluminum alloy material parameters, and die-casting process parameters, etc. Through simulation analysis, it is determined that the cooling pipes should be spirally wound around the areas with thicker wall thickness of the housing to achieve uniform cooling. According to the simulation results, use precision machining technology to machine the cooling pipes on the die-casting mold to ensure that the dimensional accuracy of the pipes is within ±0.1 mm.

[0040] Step S20: Machine the determined cooling pipes on the die-casting mold, and install temperature sensors and flow control valves to monitor the temperature of each area of the housing and the temperature and flow rate of the cooling medium in real time during the cooling process.

[0041] Specifically, in step S20, installing temperature sensors and flow control valves to monitor the temperature of each area of the housing and the temperature and flow rate of the cooling medium in real time, the installation positions include:

[0042] Cooling pipelines: Cooling pipeline temperature sensors are installed at the inlet and outlet of the cooling pipelines to monitor the inlet temperature and outlet temperature of the cooling medium in real time when it flows into and out of the mold. The cooling pipeline flow control valve is installed at the inlet of the cooling pipeline to adjust the flow rate of the cooling medium flowing into the cooling pipeline according to the instructions of the control system. For example, a cooling pipeline temperature sensor with an accuracy of ±0.1 °C is installed at the inlet of the cooling pipeline to monitor the inlet temperature of the cooling medium, and a temperature sensor with the same accuracy is installed at the outlet to monitor the outlet temperature of the cooling medium; the cooling pipeline flow control valve is installed at the inlet, and the flow rate adjustment accuracy can reach ±0.5 L / min, which can accurately adjust the flow rate of the cooling medium according to the instructions of the control system;

[0043] Places where the shell wall thickness increases: Shell temperature sensors are installed at the corresponding positions of the mold in the area where the shell wall thickness increases. Since there are large differences in heat transfer in the area where the wall thickness increases, stress concentration is likely to occur. The shell temperature sensors collect the temperature data of the shell in real time. When abnormal temperature is detected, the control system sends instructions to the cooling pipeline flow control valve to adjust the flow rate of the cooling medium in the cooling pipeline near this area, so as to balance the cooling rates of different wall thickness parts and reduce stress generation. For example, 3 high-precision shell temperature sensors are installed at the corresponding positions of the mold. These high-precision shell temperature sensors have an accuracy of ±0.05 °C and are distributed in a triangular shape to more comprehensively monitor the temperature changes in this area. At the same time, a flow control valve is installed on the cooling pipeline branch near this area to adjust the flow rate of the cooling medium in a timely manner according to the temperature data;

[0044] Core: The core is an important component for forming the internal structure of the shell. The solidification condition of the molten metal around it is crucial for the product quality. Core temperature sensors are evenly distributed on the mold wall around the core to monitor the temperature changes around the core in real time. At the same time, a core flow control valve is installed at the branch of the corresponding cooling pipeline close to the core to adjust the flow rate of the cooling medium in a timely manner according to the temperature changes, prevent defects such as shrinkage cavities and porosity from appearing around the core, and ensure the integrity of the internal structure of the shell. For example, 4 core temperature sensors are evenly distributed on the mold wall around the core. The sensors have an accuracy of ±0.05 °C and are used to monitor the temperature near the core in real time. A core flow control valve is installed on the branch of the cooling pipeline connecting to the area near the core to ensure that the flow rate of the cooling medium is adjusted in a timely manner according to the temperature changes to prevent defects from occurring;

[0045] Gate: As the entrance for the molten metal to enter the mold cavity, the molten metal near the gate has a fast flow rate and high temperature. The cooling process is complex. Install a gate temperature sensor on the mold surface around the gate to monitor the temperature change in the gate area in real time. Install a gate flow control valve on the main pipeline connecting the cooling pipes near the gate to adjust the flow rate of the cooling medium according to the temperature change, ensuring the smooth solidification of the molten metal at the gate and avoiding problems such as gate cold shut and shrinkage marks. For example, install 2 gate temperature sensors with an accuracy of ±0.1 °C on the mold surface near the gate, located on both sides of the gate respectively, to monitor the temperature change in the gate area. The gate flow control valve is installed on the main pipeline connecting the cooling pipes near the gate and can flexibly adjust the flow rate of the cooling medium according to the temperature data.

[0046] Step S30: Inject the molten metal into the die-casting mold. First, turn on the air-cooling system to perform primary air-cooling on the mold surface. After the shell is initially formed, turn on the water-cooling system and adopt segmented cooling according to the computer simulation results.

[0047] Among them, in step S30, first turn on the air-cooling system to perform primary air-cooling on the mold surface. The wind speed and air volume of the air-cooling are dynamically adjusted according to different stages of die-casting. For example, when the molten metal is just injected, a lower wind speed is used for air-cooling to avoid abnormal flow of the molten metal. As die-casting progresses, the wind speed is gradually increased to accelerate the primary cooling speed.

[0048] Specifically, the steps of injecting the molten metal into the die-casting mold in step S30, first turning on the air-cooling system to perform primary air-cooling on the mold surface, turning on the water-cooling system after the shell is initially formed, and adopting segmented cooling according to the computer simulation results include:

[0049] Primary air-cooling: When performing primary air-cooling, the wind speed and air volume of the air-cooling are dynamically adjusted according to the injection state of the liquid metal. When the molten metal is just injected, in order to avoid splashing and abnormal flow of the molten metal, the initial wind speed V1 is used for air-cooling. As the die-casting process progresses, the wind speed is gradually increased to V2 to accelerate the cooling speed until the molten metal is initially solidified and formed. For example, the initial wind speed is set to 3 m / s and the air volume is 50 m 3 / h. In the first 10 seconds after the molten metal is injected, maintain a lower wind speed to prevent splashing and abnormal flow of the molten metal; after 10 seconds, increase the wind speed by 1 m / s every 5 seconds, and the air volume is correspondingly increased by 10 m3 / h to accelerate the cooling speed;

[0050] Segmented water cooling: After the molten metal is initially solidified and formed, according to the simulation results of the computer in step S10, a segmented water cooling strategy is adopted. For the area where the thickness of the shell wall is greater than or equal to half of the maximum shell wall thickness, the cooling medium is first introduced to accelerate the cooling and solidification of this area. Then, the flow control valve of the cooling pipeline reduces the flow rate of the cooling medium according to the data fed back by the shell temperature sensor, so that the entire shell is cooled evenly. For the area where the thickness of the shell wall is less than half of the maximum shell wall thickness, the flow rate of the cooling medium is further fine-tuned and reduced, so that the thin-walled part can be cooled slowly and evenly to a suitable temperature. For example, when the die casting reaches 30 seconds, the shell is initially formed, and the water cooling system is started. First, coolant with a temperature of 15°C and a flow rate of 8 L / min is introduced into the cooling pipeline to focus on cooling the thicker parts of the shell wall. As the cooling progresses, the temperature sensor monitors the temperature changes of each part of the shell in real time. The control system adjusts the temperature and flow rate of the coolant every 5 seconds according to the preset temperature curve and stress control range. For example, when the temperature of a thick-walled part drops to 200°C, the coolant temperature is increased to 18°C and the flow rate is reduced to 6 L / min to ensure that the cooling process is uniform and stable.

[0051] Step S40: The temperature sensor collects the temperature data of the shell and the cooling medium in real time and transmits it to the control system in real time. The control system automatically adjusts the flow rate of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, the air cooling system is started again to perform secondary air cooling on the shell.

[0052] Specifically, the preset temperature curve and stress control range in step S40 are obtained through computer software simulation analysis. The temperature data collected by each temperature sensor in real time is edited into a real-time temperature curve. By comparing the real-time temperature curve and the preset temperature curve, it is judged whether the current cooling process meets the expectations. When the real-time temperature of a certain area is higher or lower than the preset deviation range, corresponding instructions are generated according to the preset regulation strategy and sent to the flow control valve of the corresponding area. The flow control valve automatically adjusts the flow rate of the cooling medium according to the instructions. For example, the temperature sensor collects temperature data every 2 seconds and transmits the data to the control system. The control system analyzes and processes the real-time temperature data. When the actual temperature of a certain area is 5°C higher than the preset temperature, an instruction is immediately issued to increase the flow rate of the cooling medium in this area by 1 L / min through the flow control valve; if the temperature deviation is within the allowable range, the current cooling parameters are maintained; after the water cooling is completed, the temperature of the shell drops to about 100°C, and the air cooling system is started again for secondary air cooling. The wind speed is set at 5 m / s, the air volume is 80 m3 / h, and the continuous air cooling is carried out for 15 minutes to reduce the temperature of the shell to room temperature and complete the entire die casting cooling process.

[0053] Example 2, such as Figure 2As shown in the figure, the present invention also proposes a shell die-casting cooling system, and the shell die-casting cooling system includes:

[0054] Cooling pipeline design module: used to simulate and analyze the cooling process by using computer simulation software according to the shape, size and wall thickness of the shell to determine the optimal layout and size of the cooling pipeline;

[0055] Shell temperature and cooling medium flow monitoring module: used to process the determined cooling pipeline on the die-casting mold and install temperature sensors and flow control valves to monitor the temperature of each area and the flow of the cooling medium in real time during the cooling process;

[0056] Primary air cooling and water cooling module: Inject the molten metal into the die-casting mold, first turn on the air cooling system to perform primary air cooling on the mold surface, and turn on the water cooling system after the shell is initially formed, and adopt segmented cooling according to the computer simulation results;

[0057] Cooling medium automatic adjustment and secondary air cooling module: used for the temperature sensor to collect the temperature data of the mold and the shell in real time and transmit it to the control system in real time. The control system automatically adjusts the flow of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, turn on the air cooling system again to perform secondary air cooling on the shell;

[0058] In the primary air cooling and water cooling module, first turn on the air cooling system to perform primary air cooling on the mold surface, and the wind speed and air volume of the air cooling are dynamically adjusted according to different stages of die-casting. For example, when the molten metal is just injected, a lower wind speed is used for air cooling to avoid abnormal flow of the molten metal. As the die-casting progresses, the wind speed is gradually increased to accelerate the primary cooling speed.

[0059] A shell die-casting cooling system provided by the present application adopts a shell die-casting cooling method in the first embodiment above, which can solve the technical problems of single cooling method and low efficiency in the traditional shell die-casting cooling method. Compared with the prior art, the beneficial effects of a shell die-casting cooling system provided by the present application are the same as those of a shell die-casting cooling method provided by the first embodiment above, and other technical features in the shell die-casting cooling system are the same as those disclosed in the method of the first embodiment, and will not be elaborated here.

[0060] Embodiment 3, the present application provides a shell die-casting cooling device, and the shell die-casting cooling device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute a shell die-casting cooling method in the first embodiment above.

[0061] Next, refer to Figure 3, which shows a schematic structural diagram of a housing die-casting cooling device suitable for implementing Embodiment 3 of the present application. A housing die-casting cooling device in Embodiment 3 of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistant), PADs (Portable Application Description: tablet computers), PMPs (Portable Media Player), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The shown housing die-casting cooling device is merely an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0062] Figure 3 The shown housing die-casting cooling device may include a processing system 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage system 1003 into a random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of a housing die-casting cooling device are also stored. The processing system 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input system 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output system 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage system 1003 including, for example, magnetic tapes, hard disks, etc.; and a communication system 1009. The communication system 1009 can allow a housing die-casting cooling device to communicate with other devices wirelessly or wireline to exchange data. Although a housing die-casting cooling device with various systems is shown in the figure, it should be understood that it is not required to implement or have all the shown systems. Instead, more or fewer systems may be implemented or had.

[0063] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product that includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from a network through a communication system, or installed from a storage system 1003, or installed from a ROM 1002. When the computer program is executed by a processing system 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0064] A housing die-casting cooling device provided by the present application adopts a housing die-casting cooling method in the above-mentioned first embodiment, and can solve the technical problems of single cooling method and low efficiency in the traditional housing die-casting cooling method. Compared with the prior art, the beneficial effects of the housing die-casting cooling device provided by the present application are the same as those of the housing die-casting cooling method provided in the above-mentioned first embodiment, and other technical features in the housing die-casting cooling device are the same as the features disclosed in the method of the previous embodiment, and will not be elaborated here.

[0065] Each part disclosed in the present application can be implemented by hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0066] The present application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, it implements the steps of a housing die-casting cooling method as described above.

[0067] The computer program product provided by the present application can solve the technical problems of single cooling method and low efficiency in the traditional housing die-casting cooling method. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as those of the housing die-casting cooling method provided in the above-mentioned first embodiment, and will not be elaborated here.

[0068] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A shell die casting cooling method, characterized in that: The method comprises the following steps: Step S10: according to the shape, size and wall thickness of the shell, a cooling process is simulated and analyzed using computer simulation software to determine the optimal layout and size of the cooling pipes in the die-casting mold for die-casting the shell; Step S20: Processing cooling pipes on the die-casting mold according to the optimal layout and size, and installing temperature sensors and flow control valves to monitor the temperature of the shell in each area and the temperature and flow of the cooling medium in real time during the cooling process; Step S30: injecting molten metal into the die-casting mold, first turning on the air cooling system to cool the mold surface, and turning on the water cooling system after the shell is initially formed, using segmented cooling according to computer simulation results; Step S40: The temperature sensor collects temperature data of the shell and the cooling medium in real time and transmits it to the control system in real time. The control system automatically adjusts the flow rate of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, the air cooling system is turned on again to perform secondary air cooling on the shell. In step S30, the air cooling system is first turned on to perform air cooling on the mold surface, and the wind speed and air volume of the air cooling are dynamically adjusted according to different stages of die casting.

2. A shell die casting cooling method according to claim 1, characterized in that: In step S10, the cooling process is simulated and analyzed using computer simulation software to determine the optimal layout and size of the cooling pipe. The cooling process is simulated by computer to obtain the temperature change and stress distribution of the shell under different cooling conditions, and the optimal layout and size of the cooling pipe in the die-casting mold are determined based on the obtained data.

3. A shell die casting cooling method according to claim 1, characterized in that: In step S20, a temperature sensor and a flow control valve are installed to monitor the temperature of the shell in each area and the temperature and flow of the cooling medium in real time during the cooling process. The installation locations include: Cooling pipeline: The cooling pipeline temperature sensor is installed at the inlet and outlet of the cooling pipeline to monitor the inflow temperature and outflow temperature of the cooling medium when it flows into and out of the mold in real time. The cooling pipeline flow control valve is installed at the inlet of the cooling pipeline to adjust the flow of the cooling medium flowing into the cooling pipeline according to the instructions of the control system; Where the shell wall thickness increases: Install a shell temperature sensor at the corresponding position of the mold in the area where the shell wall thickness increases. The shell temperature sensor collects the temperature data of the shell in real time. When abnormal temperature is detected, the control system sends a command to the cooling pipe flow control valve to adjust the cooling medium flow of the cooling pipe in this area; Core: Core temperature sensors are evenly distributed on the mold wall around the core to monitor the temperature changes around the core in real time. At the same time, core flow control valves are installed at the branches of the corresponding cooling pipelines close to the core to adjust the cooling medium flow according to temperature changes. Gate: Install a gate temperature sensor on the mold surface around the gate to monitor the temperature changes in the gate area in real time. Install a gate flow control valve on the main pipe of the cooling pipe connected to the gate to adjust the cooling medium flow according to temperature changes.

4. A shell die casting cooling method according to claim 1, characterized in that: In step S30, the molten metal is injected into the die casting mold, and the air cooling system is first turned on to cool the mold surface. After the shell is initially formed, the water cooling system is turned on. The step of using segmented cooling according to the computer simulation results includes: Primary air cooling: During the primary air cooling, the wind speed and air volume are dynamically adjusted according to the injection status of the liquid metal. When the molten metal is just injected, the initial wind speed V1 is used for air cooling. As the die casting process progresses, the wind speed is gradually increased to V2 until the molten metal is initially solidified and formed; Segmented water cooling: After the metal liquid is initially solidified and formed, a segmented water cooling strategy is adopted according to the simulation results of the computer in step S10. For the area where the shell wall thickness is greater than or equal to half of the maximum shell wall thickness, the cooling medium is first introduced to accelerate the cooling and solidification of the area. The cooling pipeline flow control valve then reduces the flow of the cooling medium according to the data fed back by the shell temperature sensor to make the entire shell evenly cooled. For the area where the shell wall thickness is less than half of the maximum shell wall thickness, the flow of the cooling medium is further fine-tuned to reduce the flow.

5. The shell die casting cooling method according to claim 1, characterized in that: The preset temperature curve and stress control range in step S40 are obtained by computer software simulation analysis. The temperature data collected by each temperature sensor in real time is edited into a real-time temperature curve. By comparing the real-time temperature curve with the preset temperature curve, it is determined whether the current cooling process meets expectations. When the real-time temperature of a certain area is higher or lower than the preset deviation range, a corresponding instruction is generated according to the preset control strategy and sent to the flow control valve in the corresponding area. The flow control valve automatically adjusts the flow of the cooling medium according to the instruction.

6. A shell die casting cooling system, characterized in that: The housing die casting cooling system comprises: Cooling pipe design module: used to determine the optimal layout and size of the cooling pipes by simulating and analyzing the cooling process using computer simulation software according to the shape, size and wall thickness of the shell; Shell temperature and cooling medium flow monitoring module: used to process the determined cooling pipes on the die-casting mold, and install temperature sensors and flow control valves to monitor the temperature of each area and the flow of cooling medium in real time during the cooling process; Primary air cooling and water cooling module: inject the molten metal into the die casting mold, first turn on the air cooling system to cool the mold surface, turn on the water cooling system after the shell is initially formed, and use segmented cooling according to the computer simulation results; Automatic cooling medium adjustment and secondary air cooling module: The temperature sensor is used to collect the temperature data of the mold and the shell in real time and transmit it to the control system in real time. The control system automatically adjusts the flow of the cooling medium through the flow control valve according to the preset temperature curve. After the water cooling is completed, the air cooling system is turned on again to perform secondary air cooling on the shell. In the primary air cooling and water cooling module, the air cooling system is first turned on to perform primary air cooling on the mold surface, and the wind speed and air volume of the air cooling are dynamically adjusted according to different stages of die casting.

7. A shell die-casting cooling device, characterized in that: The housing die-casting cooling device comprises: A memory, a processor, and a shell die-casting cooling program stored in the memory and executable on the processor, wherein the shell die-casting cooling program, when executed by the processor, implements a shell die-casting cooling method as claimed in any one of claims 1 to 5.

8. A computer program product, characterized in that The computer program product comprises a shell die-casting cooling program, and when the shell die-casting cooling program is executed by a processor, a shell die-casting cooling method according to any one of claims 1 to 5 is implemented.

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