Because of its excellent mechanical properties, corrosion resistance and biocompatibility, titanium alloys have been widely used in many fields such as aviation and medical treatment. As an important means of titanium alloy forming, hot die forging is of great significance for improving the production efficiency and performance of titanium alloy parts. In this paper, the progress of titanium alloy hot die forging process is summarized, and the challenges facing it are analyzed.
Progress of hot die forging of titanium alloy
Process optimization: With the advancement of manufacturing technology, the hot die forging process of titanium alloy has been continuously optimized. By precisely controlling key parameters such as temperature, strain rate and deformation, high efficiency and precision forming of titanium alloys can be achieved.
New mold materials: The mold is subjected to extreme conditions of high temperature and high pressure during hot die forging, and the traditional mold materials are difficult to meet the requirements. In recent years, new superalloys and ceramic matrix composites have been applied to mold manufacturing, which significantly improves the life and forming accuracy of molds.
Numerical simulation technology: With the development of computer technology, numerical simulation technology has been widely used in titanium alloy hot die forging process. Through numerical simulation, the flow behavior, temperature distribution and defect formation of metals can be predicted, which provides strong support for process optimization.
The challenge of titanium alloy hot die forging process
High temperature performance control: The hot working performance of titanium alloy is comprehensively affected by its chemical composition, microstructure and process parameters. At high temperatures, titanium alloys are prone to oxidation, nitriding and other reactions, leading to deterioration of performance. Therefore, how to accurately control the high temperature properties of titanium alloys is an important challenge facing the hot die forging process.
Mold design and manufacturing: Due to the high strength and high hardness of titanium alloy, the mold is subjected to huge pressure and friction during hot die forging, which is easy to lead to wear and failure. Therefore, how to design and manufacture molds with high wear resistance and high thermal stability is another important challenge.
Cost control and environmental protection requirements: titanium alloy raw material cost is high, and the energy consumption in the process of hot die forging is large. At the same time, the waste gas and waste water generated in the process of hot die forging cause certain pressure on the environment. How to reduce production cost and meet environmental protection requirements while ensuring product quality is a difficult problem that titanium alloy hot die forging process must face.
In order to overcome the challenges faced by titanium alloy hot die forging process, future research should focus on the following aspects:
New material research and development: Through the development of new titanium alloys with excellent high temperature performance and formability, improve the production efficiency and product quality of hot die forging process.
Mold material and technology innovation: Further explore new mold materials to improve the wear resistance and thermal fatigue resistance of the mold. At the same time, the development of advanced mold manufacturing technology, such as additive manufacturing, surface treatment, etc., to meet the higher requirements of titanium alloy hot die forging process.
Green manufacturing and intelligence: Strengthen the research on green manufacturing technology of titanium alloy hot die forging process to reduce energy consumption and environmental pollution. At the same time, with the help of artificial intelligence, big data and other technical means, intelligent monitoring and optimization of hot die forging process can be realized to improve production efficiency and resource utilization.
Hot die forging of titanium alloys has made remarkable progress in recent years, but it still faces many challenges. Through continuous innovation and optimization of the process, combined with the development of new materials and new technologies, it is expected to overcome these challenges, promote the development of titanium alloy hot die forging process to a higher level, and provide strong support for the wide application of titanium alloy parts.
