How does the new intelligent Fuxing train carry tungsten and molybdenum on the Beijing-Harbin high-speed railway?
CR400BF, the new Fuxing intelligent EMU, was officially unveiled on the Beijing-Shanghai, Beijing-Guangzhou and Beijing-Harbin high-speed railway lines. In addition to the joint efforts of scientists and front-line personnel, it is also inseparable from the contributions of many metallic and non-metallic elements in the periodic table, such as aluminum, tungsten, molybdenum, carbon and so on.
Tungsten and molybdenum, known as "industrial teeth" and "industrial monosodium glutamate" respectively, are indispensable raw materials for the development of sophisticated industries. The tungsten and molybdenum parts available for CR400BF train are as follows:
1. Carbon slider. In the process of use, the carbon slider often appears partial wear and edge crack fragmentation, thus shortening its life and increasing the cost. To solve this problem, the slider often uses tungsten fluidized (WS2) and molybdenum disulfide (MoS2) nanoparticles as lubricants. Compared with ordinary lubricants, WS2 and MoS2 have not only lower friction coefficient, but also better high temperature resistance, oxidation resistance and corrosion resistance, so as to maximize the wear resistance of the product.
Two, bolts and nuts. In order to resist the cold weather in the north in winter, trains use technology and equipment such as chrome molybdenum alloy steel bolts and nuts, low temperature control switches, water supply and drainage pipes covered with cold resistant materials. Chromium-molybdenum steel is an alloy composed of chromium, molybdenum, iron and carbon, which has the characteristics of good workability, good impact resistance, strong low temperature resistance and easy welding.
Three, brake disc. The main raw material of train brake disc is hot rolled alloy steel, which contains C, Si, Mn, Cr, N, Mo, V, Fe and other elements. They are distributed uniformly in the steel matrix according to a specific ratio, which not only ensures the mechanical properties of the material, but also greatly improves the wear resistance of the material.
4. Intelligent devices. As the core parts of Fuxing intelligent equipment, the production of the chip is inseparable from high-purity tungsten and molybdenum target materials, tungsten-copper alloy, and even tungsten-molybdenum sulfide. Tungsten-molybdenum target material is the preferred material for diffusion barrier layer and bonding layer inside the chip. Tungsten-copper alloy is the main packaging material.
In addition, the CR400BF train body, shielding material, motor, temperature sensor and other parts may be applied to tungsten and molybdenum materials. In addition, in the manufacture of tools used in cutting tools, drills, lighting and other tools also contain tungsten and molybdenum.
In general, compared with ordinary bullet trains, the comprehensive quality of the new Fuxing intelligent EMUs has been greatly improved. Combined with the intelligent technology, superior configuration and application practice of Fuxing Intelligent EMU Group of Beijing-Zhangjiagou High-speed Railway developed by CRRC Changke, intelligent configuration is added in 16 aspects, service functions are optimized again, and more passengers will be able to enjoy the ride experience of Fuxing Intelligent EMU.In the safety aspect of the car body, advanced composite material carbon fiber is adopted, which makes the overall safety significantly improved.
In addition, the design is stunning. The appearance of CR400BF adopts the "Ruilong Zhixing" and "Dragon and Phoenix Presented Promising" schemes respectively, implying that China's high-speed railway takes the lead in the world and serves the mission of benefiting mankind, and sustains the good wishes of national prosperity and prosperity and people's well-being.
