The most popular new nano aluminum alloy products

2022-08-15
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Recently, the project "high strength carbon nanotubes/aluminum alloys and applications for environmentally friendly lightweight circuits" undertaken by Wuhan Nari Co., Ltd. of the National Electric Power Research Institute (hereinafter referred to as "Wuhan Nari but also very important") won the second prize of the National Electric Power Corporation for scientific and technological progress. The application of this new material product will help to improve the level of electrical technology and equipment

in order to strengthen the basic and leading role of new power materials in power construction, the State Power Corporation officially named "carbon nanotube modified aluminum alloy for power transmission and transformation and applied technology research team" in 2015. After continuous funding and technical research, the team relied on the resources and technical advantages of Wuhan Nari to make breakthroughs in the research, development and production of nano modified aluminum alloy materials and their products, form a large-scale production capacity, successfully realize the application of nano modified aluminum alloy products in the field of electricity, and launched nano carbon alloy fittings. The technology has passed the technical appraisal of the China Society of electrical engineering, and the overall results of the project have reached the international leading level

"replacing iron with aluminum" nano modified aluminum alloy meets the needs of electric construction

adopting new materials, new processes and new technologies, and exploring the path of quality improvement, efficiency increase and green development is the development direction of electric construction. Wuhan Nari boldly introduced material professionals and established Yangluo new material industry base, forming the dual platform advantages of Hubei electric power new material engineering technology center and the electrical new material laboratory of national household appliance company, and the development and innovative application of new materials for power storage

iron and aluminum are two kinds of metals used in electricity except copper. Compared with iron materials, aluminum materials have a light proportion, only one third of that of iron and steel materials; Corrosion resistant, a thin passive film is formed on its surface to prevent further oxidation of the material; Weak magnetism can reduce the energy loss caused by the repeated changes of the internal magnetic chip of the material under the alternating magnetic field

therefore, in some energy-saving or lightweight applications (such as power transmission lines), it has significant performance advantages, but in the traditional process of alloying means to improve whether the instrument meets the measurement performance requirements, the addition of a large number of alloy elements will lead to the decline of comprehensive performance, and the mechanical performance is generally low, which cannot meet the high-strength applications (such as fittings). In order to develop high-performance aluminum alloys and promote their substitution for steel materials, the team decided to target carbon nanotube modified aluminum alloys

carbon nanotube is a one-dimensional tubular material wound by graphite sheets, with a diameter of only nanometer. It contains a lot of energy in its tiny "body". Integrating these "little things" into the commonly used aluminum alloy materials in electricity, like the steel bars in concrete, can significantly improve the strength of aluminum alloy and play a big role in electricity and related fields. However, one of the disadvantages of nano materials is that they are easy to agglomerate. How to achieve the dispersion and distribution of carbon nanotubes in aluminum matrix is the key to the successful development of aluminum alloy materials. Traditionally, the powder metallurgy process is mainly used to mix the nano phase and metal powder through mechanical ball milling, and then sinter, but this method can not achieve large size, and the plasticity of the material is poor

in order to solve this problem, Wuhan Nari science and technology research team has gone through four years and hundreds of tests. By constantly optimizing the composition formula and adjusting the process parameters, it has proposed the melting and preparation process of carbon nanotube modified aluminum alloy, and solved the technical problems of carbon nanotube dispersion, carbon nanotube surface coating, carbon nanotube and aluminum liquid infiltration, carbon nanotube suspension in molten alloy and so on, It lays a solid foundation for the mass production of carbon nanotube modified aluminum alloy. It is reported that 30 tons of carbon nanotube modified aluminum alloy has been produced

"ground application" new aluminum alloy helps manufacture high-performance electrical equipment

over the years, research and the national non ferrous metal Standards Committee has applied for the formulation of national standards for ceramic aluminum new materials, and finally bear fruit. Wuhan Narui took the lead in launching the first generation of products - nano carbon alloy fittings, which are based on nano modified aluminum alloy technology to avoid damage due to human overload, And passed the evaluation of new technology and new products of State Grid Corporation of China

line energy conservation and environmental protection is a major measure of power construction in response to low-carbon economy and beautiful China. It not only covers the environmental protection design and long-term energy conservation of operating lines, but also reflects the environmental protection manufacturing of power equipment and the application level of new technologies

"we tested the energy consumption of nano carbon alloy fittings according to relevant standards. Taking the nw-07115 nano carbon alloy bowl hanging plate as an example, the energy consumption was reduced by about 3 watts under the economic current of 240 amps, which was equivalent to countless 3-watt bulbs on the line day and night, which were extinguished." The project leader said vividly when introducing the energy-saving advantages of nano carbon alloy fittings

according to the test results, when the nano carbon alloy bowl head hanging plate is used with the tension clamp, the unit energy consumption is reduced by 22% - 24% compared with the cast iron fittings. According to the bidding data of cast iron fittings over the years (including only the agreed inventory), the annual demand for fittings exceeds 400million yuan. If energy-saving nano carbon alloy fittings are used to replace them, the annual power savings will exceed 160000 megawatt hours based on the economic current density of 185 amps

in addition, green environmental protection, light weight and beauty are also the application advantages of this series of fittings. With the strengthening of the national environmental protection policy and the continuous improvement of the access conditions of the foundry industry, the original small and low capacity cast iron plants were forced to shut down, resulting in the rise in the price of cast iron raw materials. At the same time, the hot-dip galvanizing process causes great environmental pollution. The simple galvanizing process plant and the sewage discharged wantonly cause great harm to the operating workers and the natural environment. In contrast, nano carbon alloy fittings do not need to be hot-dip galvanized, avoiding environmental pollution, and fulfilling the corporate mission of "building green electricity and contributing clean energy" of the State Grid Corporation of China with practical utility. The weight of its body is only 30% - 50% of that of cast iron fittings of the same specification, and the standard failure load is increased by more than 30%, which can provide a more stable and long-term safety guarantee for line operation

in addition, lightweight and high-strength nano modified aluminum alloy materials can be further applied in various occasions, such as aluminum alloy transformers, aluminum alloy arresters, lightweight aluminum alloy bodies, etc., and also show a huge application space in the fields of new energy vehicles. At present, aluminum alloy arresters based on carbon nanotube modified aluminum alloy technology have been put into operation in Xiangyang insulator factory, with an annual output of more than 20000 sets

in the future, Wuhan Nari will always adhere to the development concept of creating "new materials" to be competitive, carry out in-depth research and development and production of new materials and products, and deeply cultivate the diversified application market of carbon nanotube modified aluminum alloy products, so as to make due contributions to the country's Construction of green, environmental friendly, energy-saving and efficient clean energy electricity

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