The Quality of Automotive Aluminum Alloy Die Casting Parts (Part Two)
2. Optimization and improvement measures
2.1 Image simulation management and improvement
For die casting parts, the gas is mainly obtained from the inside of the solution, the release agent and the manufacturing process. The gas is accidentally obtained from the casting process. The gas generated in the solution is closely related to the type of material, properties, and melting technology of the casting. The gas generated due to the mold release agent is closely related to the selection of the casting process design and the casting model. For the disadvantages of this casting, the adjustment of the casting's melting technology and the spraying technology can be used. There is a close relationship between the gas of castings in the manufacturing process and the operation of metal liquids. The expansion and contraction of castings are closely related to the temperature and solidification of castings. After the design scheme of the casting is determined, the design and configuration of the runner can be carried out; the exhaust line and overflow equipment and the temperature of the casting mold can be set, and the coefficient of the part can be set. When designing and configuring the coefficients and parameters of the parts, the flow form of the metal liquid in the casting body and the solidification of the liquid should be considered to ensure that the shrinkage cavity value is minimized. Furthermore, image simulation can be used for analysis. The method of image simulation is the main method to analyze the law of castings and understand their filling, and provide a scientific basis for the reasons for the formation of holes in castings. The timing wheel model is changed, and it is displayed in a triangular form; then, the simulation system of the technical process is given, and the format of the STL file is identified. After the identification, use Msgmasoft software to carry out the division operation of the network. Give the casting and pouring system to its 100,000 network nodes. After in-depth research and analysis of Msgmasoft software and its practical application, it is found that the use of Msgmasoft software has practical applicability, which can reform and innovate casting process molds, and lay a theoretical foundation for the design of casting molds and processes.
2.2 Improving the management of dissolved gases
When the timing gear is smelting, the charge out of the gear chamber includes a 50% aluminum deposit and a 39% return. When it is returning to the furnace, the moisture and some other substances will continue to increase, which will increase the content of gas. In the early stage of putting the material into the furnace, it should be processed and managed in time to reduce the content of melt elements, and add and remove them. For gas and liquid, the monitoring and observation of gas content have been increased. At the same time, the process should be changed and optimized; the injection technology should be improved, and the injection line should be adjusted to ensure an efficient degassing operation. The content of gas in one hundred grams of aluminum around 0.2ml should be guaranteed.
2.3 Increasing the rationality of process parameters
For the rationality of the process parameters, first, analyze and study the relationship between the process parameters and the quality that can affect the casting according to the monitoring results, and improve the quality of the casting without changing the casting conditions. In order to ensure the rationality of the process parameters, the rationality of the casting process can be improved by increasing the compactness of the casting and relieving the pressure of the gas entrainment in the injection process. Second, it is necessary to increase the attention to the casting conditions, ensure the rational operation of the process, increase the attention to the holes, adjust the size of the runner, and provide an exhaust pipe at the liquid intersection. In the actual production and design activities of castings, it is necessary to increase the observation of casting holes to see if there are defects, and to observe their sizes and diffusion ranges.
This observation of castings is mainly to monitor the practical applicability of the castings to see if they need to be scrapped and renewed. The defective parts of the casting are intercepted, and the defective parts are processed again to ensure that they meet the requirements of standard castings and increase their practical applicability. Pay attention to observing the hole wall of the finished casting to see if the hole wall is rough. The bottom of the hole has good coherence by observing and analyzing with a microscope, accompanied by the shrinkage and loosening of the holes.
3. Conclusion
To manage the defects of automotive aluminum alloy die castings, we must first improve the management of dissolved gas, optimize the process, increase the rationality of process parameters, optimize the casting conditions, and monitor and observe the castings to see if they need to be scrapped and renewed. The defective parts should be processed again to ensure that they meet the requirements of standard castings. For image simulation analysis of the main defects of the timing properties of the casting, the casting's melting technology and spraying technology should be adjusted.
2.1 Image simulation management and improvement
For die casting parts, the gas is mainly obtained from the inside of the solution, the release agent and the manufacturing process. The gas is accidentally obtained from the casting process. The gas generated in the solution is closely related to the type of material, properties, and melting technology of the casting. The gas generated due to the mold release agent is closely related to the selection of the casting process design and the casting model. For the disadvantages of this casting, the adjustment of the casting's melting technology and the spraying technology can be used. There is a close relationship between the gas of castings in the manufacturing process and the operation of metal liquids. The expansion and contraction of castings are closely related to the temperature and solidification of castings. After the design scheme of the casting is determined, the design and configuration of the runner can be carried out; the exhaust line and overflow equipment and the temperature of the casting mold can be set, and the coefficient of the part can be set. When designing and configuring the coefficients and parameters of the parts, the flow form of the metal liquid in the casting body and the solidification of the liquid should be considered to ensure that the shrinkage cavity value is minimized. Furthermore, image simulation can be used for analysis. The method of image simulation is the main method to analyze the law of castings and understand their filling, and provide a scientific basis for the reasons for the formation of holes in castings. The timing wheel model is changed, and it is displayed in a triangular form; then, the simulation system of the technical process is given, and the format of the STL file is identified. After the identification, use Msgmasoft software to carry out the division operation of the network. Give the casting and pouring system to its 100,000 network nodes. After in-depth research and analysis of Msgmasoft software and its practical application, it is found that the use of Msgmasoft software has practical applicability, which can reform and innovate casting process molds, and lay a theoretical foundation for the design of casting molds and processes.
2.2 Improving the management of dissolved gases
When the timing gear is smelting, the charge out of the gear chamber includes a 50% aluminum deposit and a 39% return. When it is returning to the furnace, the moisture and some other substances will continue to increase, which will increase the content of gas. In the early stage of putting the material into the furnace, it should be processed and managed in time to reduce the content of melt elements, and add and remove them. For gas and liquid, the monitoring and observation of gas content have been increased. At the same time, the process should be changed and optimized; the injection technology should be improved, and the injection line should be adjusted to ensure an efficient degassing operation. The content of gas in one hundred grams of aluminum around 0.2ml should be guaranteed.
2.3 Increasing the rationality of process parameters
For the rationality of the process parameters, first, analyze and study the relationship between the process parameters and the quality that can affect the casting according to the monitoring results, and improve the quality of the casting without changing the casting conditions. In order to ensure the rationality of the process parameters, the rationality of the casting process can be improved by increasing the compactness of the casting and relieving the pressure of the gas entrainment in the injection process. Second, it is necessary to increase the attention to the casting conditions, ensure the rational operation of the process, increase the attention to the holes, adjust the size of the runner, and provide an exhaust pipe at the liquid intersection. In the actual production and design activities of castings, it is necessary to increase the observation of casting holes to see if there are defects, and to observe their sizes and diffusion ranges.
This observation of castings is mainly to monitor the practical applicability of the castings to see if they need to be scrapped and renewed. The defective parts of the casting are intercepted, and the defective parts are processed again to ensure that they meet the requirements of standard castings and increase their practical applicability. Pay attention to observing the hole wall of the finished casting to see if the hole wall is rough. The bottom of the hole has good coherence by observing and analyzing with a microscope, accompanied by the shrinkage and loosening of the holes.
3. Conclusion
To manage the defects of automotive aluminum alloy die castings, we must first improve the management of dissolved gas, optimize the process, increase the rationality of process parameters, optimize the casting conditions, and monitor and observe the castings to see if they need to be scrapped and renewed. The defective parts should be processed again to ensure that they meet the requirements of standard castings. For image simulation analysis of the main defects of the timing properties of the casting, the casting's melting technology and spraying technology should be adjusted.
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