At present, my country's railways are developing rapidly and expanding in scale. During the 13th Five-Year Plan period, the goal is to build 29,000 kilometers of railways, including 11,000 kilometers of high-speed railways, and 1,200 additional EMUs, which are expected to drive steel consumption by 100 million tons; additional 258,000 railway vehicles will consume 7.567 million tons of steel. . At the same time, under the guidance of the “Belt and Road” policy, China's standard EMUs, as a business card made in China, shoulder the brand responsibility of driving exports. The localization of its key components and their adaptability to the harsh global environment are of utmost importance. The large-scale development of railways has a large demand for steel for key components including high-speed axles, bogie frames, and weather-resistant car bodies. However, there are high-end steel raw materials that cannot meet the needs of the large-scale development of railways. After nearly 10 years of “introduction-digestion-absorption-innovation”, although my country's high-speed railway industry has achieved rapid development, the key components of high-speed railway axles, wheels and bearings are still Need to be imported. Existing freight cars have short service life and heavy maintenance workload, and the corrosion resistance and strength of materials used in the cars are in urgent need of improvement. Therefore, vigorously carry out in-depth research and application demonstrations on the basic frontiers and major common key technologies of steel for key railway components in harsh environments such as extreme cold and special corrosion, and realize the independence and industrialization upgrade of steel for key components of railway vehicles in harsh environments. It is imperative.
The research goal of this project: In combination with the characteristics of service, carry out basic research, key manufacturing technology and its application testing and evaluation technology for high-toughness high-speed axle steel, high weather resistance, high strength and easy-weldable bogie frame steel and car body steel in high-cold areas Systematized research, to achieve the stable improvement of the quality of key components of railway vehicles and their demonstration applications in harsh environments, and to promote the independent localization and international adaptability of key components of my country’s railways. Propose corresponding technical standards and specifications for industry applications.
The research basis and team composition of this project: The project lead unit, TISCO, is an important domestic railway steel production base. It has world-leading pilot and industrial production lines, and has accumulated rich experience in R&D, production and application. Products include railway axles, Weather resistance, passenger and freight car board, welding wire steel, etc., of which axle steel has a market share of more than 80%. Focusing on high-speed axle steel, weathering steel, and bogie frame steel, the project team has carried out relevant preliminary research, which has laid a solid foundation for the completion of the project's tasks and goals.
Expected results and benefits of this project: to realize the independent development of steel for high-speed axles and bogie frames in my country, improve the service performance of weathering steel, and meet the demand for steel for high-cold and high-speed railways and high weather-resistant trucks designed for speeds of 350 kilometers per hour or more in my country; establish a thousand tons A demonstration and application base for the production of high-speed axle steel, weathering steel, and bogie frame steel for high-speed axles above grade A, forming a standardized system for material production, testing and evaluation with independent intellectual property rights.
