高速轧机工作界面非稳态混合润滑过程多因素耦合辊缝力学特性研究.docx

高速轧机工作界面非稳态混合润滑过程多因素耦合辊缝力学特性研究Abstract:In this paper, the non-steady state mixed lubrication process, multi-factor coupling and roll seam mechanical characteristics of high-speed rolling mill working interface are studied. Through the analysis of multi-field coupled model, it is found that the rolling process of high-speed rolling mill is affected by multiple factors such as oil film thickness, oil temperature, oil viscosity, rolling speed, and roll diameter. Based on the finite element method, a two-dimensional mathematical model of the roll seam mechanics is established, and the influence of the rolling force on the deformation of the roll seam is analyzed. The results show that the rolling force has a significant effect on the deformation of the roll seam, and the roll seam deformation can lead to uneven lubrication of the working interface, which affects the stability of the rolling process.Introduction:High-speed rolling mill is an important equipment for manufacturing high-quality metal products, and its working interface is the key part that directly affects the product quality. In order to ensure the stable operation of the rolling mill and improve the quality of the product, it is necessary to study the non-steady state mixed lubrication process, multi-factor coupling and roll seam mechanical characteristics of the high-speed rolling mill working interface.Methods:In this study, a multi-field coupled model is established to analyze the influence of multiple factors on the lubrication performance of the working interface, including oil film thickness, oil temperature, oil viscosity, rolling speed, and roll diameter. The results show that the non-steady state mixed lubrication process is affected by these factors, and the oil film thickness is the most important factor affecting the lubrication performance.To further study the mechanical characteristics of the roll seam, a two-dimensional mathematical model of the roll seam mechanics is established based on the finite element method. The deformation of the roll seam under the action of the rolling force is analyzed, and the influence of the roll seam deformation on the lubrication performance is studied.Results:The results show that the rolling force has a significant effect on the deformation of the roll seam. When the rolling force is large, the roll seam is prone to deformation, which may lead to uneven lubrication of the working interface. The analysis of the lubrication performance shows that the stability of the lubrication performance of the working interface is closely related to the deformation of the roll seam.Conclusion:In summary, the high-speed rolling mill working interface is a complex system, and the non-steady state mixed lubrication process, multi-factor coupling and roll seam mechanical characteristics are all important factors that affect the stability of the system. Through the study of the roll seam mechanics and lubrication performance, it is found that the deformation of the roll seam has a significant effect on the lubrication performance, and the optimization of the roll seam structure can effectively improve the stability of the high-speed rolling mill working interface.In addition to the factors mentioned before, other factors such as material properties, surface roughness, and cooling conditions can also affect the lubrication performance of the high-speed rolling mill working interface. Therefore, it is necessary to comprehensively analyze the multi-field coupling effect and optimize the parameters of the working interface to improve the manufacturing efficiency and product quality.Based on the research results, some measures can be taken to improve the stability of the high-speed rolling mill working interface. For example, optimizing the oil lubrication system to ensure the oil temperature and oil viscosity are within the appropriate range, reducing the rolling force by adjusting the processing parameters, improving the surface roughness of the rolls, and optimizing the structure of the roll seam can effectively enhance the lubrication performance and reduce the deformation of the roll seam, thereby improving the stability of the system.Furthermore, the research results provide a theoretical basis for developing intelligent control systems for high-speed rolling mills which can adjust the parameters in real-time and achieve optimal lubrication performance. In summary, the study of the non-steady state mixed lubrication process, multi-factor coupling and roll seam mechanical characteristics of the high-speed rolling mill working interface is of great importance for improving the quality of metal products and the manufacturing efficiency of high-speed rolling mills.In addition, the study of the dynamic behavior of the high-speed rolling mill working interface can help to identify the causes of rolling accidents and provide guidance for the prevention of such incidents. The high-speed rolling process is complex and involves various dynamic factors, such as vibration, shock, and rolling force fluctuation. These dynamic factors can cause damage to the rolls or the rolling mill structure, leading to production downtime, increased maintenance costs, and reduced product quality.Therefore, it is essential to monitor and control the dynamic behavior of the rolling process in real-time. Sophisticated monitoring systems involving sensors and feedback control strategies can prevent or mitigate the impact of dynamic factors on the working interface. Besides, the development of advanced simulation models based on multi-physics theories can provide a comprehensive understanding of the dynamic behavior of the rolling process and enable the optimization of the rolling parameters to reduce the risks of rolling accidents.Overall, the study of the high-speed rolling mill working interface is a crucial area of research that can have a significant impact on the manufacturing industry. The stability and efficiency of the rolling process can be improved by optimizing lubrication performance and controlling the dynamic behavior of the rolling process. Additionally, the development of advanced simulation models and intelligent control systems can bring substantial benefits to the industry, including reduced maintenance costs, improved product quality, and increased production efficiency.To optimize the lubrication performance and control the dynamic behavior of the rolling process, researchers have developed various advanced techniques and theories. For example, the use of modern lubricants with micron-sized particles as additives can improve the tribological properties of the working interface and reduce the friction and wear between the rolls and the metal strip. Moreover, the application of textured surfaces on the rolls can enhance the lubrication performance by creating micro-dimples that capture and retain lubricant within the contact area.In terms of dynamic behavior control, feedback control strategies based on artificial intelligence and machine learning techniques have shown great potential. Real-time monitoring of the rolling process parameters such as rolling force, temperature, and vibration can provide critical information for controlling the dynamic behavior. Moreover, the integration of multiple sensing technologies such as acoustic emission monitoring and thermal imaging can improve the reliability and accuracy of the monitoring system.One of the major challenges in the study of the high-speed rolling mill working interface is the multi-physics nature of the process. The coupling between different physical phenomena such as heat transfer, fluid flow, and solid mechanics can cause nonlinear behavior and instability in the rolling process. Hence, the development of sophisticated simulation models that consider these multi-physics effects is essential to fully understand the dynamic behavior of the rolling process.In conclusion, the study of the high-speed rolling mill working interface is a complex and interdisciplinary area that requires collaboration between experts from different fields. The optimization of the lubrication performance and control of the dynamic behavior of the rolling process can bring significant benefits to the manufacturing industry. The development of advanced techniques and theories such as modern lubricants, textured surfaces, feedback control strategies, and multi-physics simulation models can pave the way for the advancement of the industry towards higher efficiency, reliability, and sustainability.Another area of research in the study of high-speed rolling mills is the development of new materials for the rolls. Rolls made of high-strength alloys such as tungsten carbide can improve wear resistance and reduce the need for frequent replacements, leading to cost savings and increased productivity. In addition, the use of composite materials with unique properties such as high thermal conductivity and low coefficient of thermal expansion can improve the heat dissipation and reduce roll deflection during the rolling process.Furthermore, the integration of automation and robotics in the rolling process has gained attention as a way to increase efficiency and reduce errors. Autonomous systems such as robotic roll changers and automated maintenance systems can minimize downtime and increase the lifespan of the rolls. Additionally, the use of machine learning algorithms for predictive maintenance can help detect potential issues before they become major problems, further reducing downtime and maintenance costs.Lastly, the study of the high-speed rolling mill working interface has implications beyond the manufacturing industry. For instance, the principles learned from understanding the interplay of different physical phenomena in the rolling process can be applied to similar material processing techniques. In addition, the development of advanced lubricants, surface texturing techniques, and control strategies can be applied to various other industries where friction and wear reduction are critical.In conclusion, the study of the high-speed rolling mill working interface is an important area of research that can bring significant advancements to the manufacturing industry and beyond. The development of new materials, integration of automation and robotics, and application of advanced simulation models and control strategies can improve efficiency, reduce maintenance costs, and increase sustainability. The interdisciplinary nature of this research requires collaboration between experts in various fields, highlighting the need for continued advancements in this area.Another area of research in the study of high-speed rolling mills is the development of new sensors and measurement techniques for improved process monitoring and control. Inaccurate measurements can lead to defective products and waste, so accurate measurement of strip thickness, tension, and temperature during the rolling process is crucial. Advancements in sensor technology such as eddy current sensors, infrared sensors, and acoustic emission sensors have provided new ways to measure these parameters with high accuracy and reliability.Another important area of research is the optimization of rolling parameters such as rolling speed, force, and temperature. The use of advanced simulation models such as finite element analysis and computational fluid dynamics can help understand the complex interactions between the material, rolls, and lubricant, and provide insights into the optimal rolling parameters for specific materials and products. Optimization of these parameters can lead to improvements in product quality, reduction in energy consumption, and increased productivity.Finally, the study of the high-speed rolling mill working interface has implications for sustainable manufacturing. The increased efficiency and reduced waste resulting from advancements in this field can lead to a more sustainable manufacturing process. Additionally, the use of advanced lubricants and surface texturing techniques can reduce the environmental impact associated with traditional lubricants and coatings.In conclusion, the study of the high-speed rolling mill working interface is an important area of research with a wide variety of applications. Advancements in materials, automation, sensors, and optimization techniques can improve productivity, reduce costs, and increase sustainability. Continued research in this field is necessary to further our understanding of the complex interactions in the rolling process and pave the way for new advancements in the manufacturing industry.Another important area of research in the study of high-speed rolling mills is the development of new materials and coatings for the rolls and other components. The rolls are the heart of the rolling mill, and they are subjected to high levels of stress and wear during the rolling process. The use of advanced materials such as carbide, ceramic, and composite materials, can lead to longer lifespan of the rolls and reduced maintenance cost.Moreover, the development of intelligent control systems for high-speed rolling mills is another area of interest for researchers. The use of machine learning, artificial intelligence, and advanced control algorithms can enhance the process monitoring and control, ultimately leading to improved product quality, increased productivity, and reduced energy consumption.In addition, the study of high-speed rolling mill working interface has significant implications for the aerospace industry. The aerospace industry requires high-strength material products with specific properties, and the high-speed rolling process can produce thin and high-strength materials that meet these requirements. The use of high-strength aluminum alloys, titanium alloys, and other advanced materials in aerospace manufacturing can lead to lighter and more fuel-efficient aircraft, reducing the environmental impact of air travel.Finally, the development of high-speed rolling mills with increased flexibility and adaptability is an important area of research. The ability of the rolling mills to quickly switch between different materials and product specifications can lead to reduced changeover time and improved manufacturing efficiency.In conclusion, the study of the high-speed rolling mill working interface is a diverse and multifaceted field of research with numerous applications in the manufacturing industry. Continued research in this field will lead to advancements in materials, automation, sensors, and optimization techniques and contribute to the development of more sustainable and efficient manufacturing processes.Another important aspect of research in the high-speed rolling mill working interface is understanding the effect of operating conditions such as temperature, pressure, an