Humans are constantly evolving and constantly recognizing the new world. In the 1990s, nano-products broke into people's lives and there was constantly a lot of information to show people the wonderful changes that nanotechnology brought to life. As academician Bai Chunli, chief scientist of the nanotechnology project at the Chinese Academy of Sciences, said: "A brand new nano-world will be offered to mankind as something different from any previous experience." Nanotechnology is one of the key technologies concerned by the world at home and abroad in the 21st century. It is also the technical basis of researches in information technology, life sciences, molecular biology and new materials. In the west, Americans think nanotechnology will become the engine of economic development in the 21st century. According to the German Ministry of Science and Technology's forecast, by 2010, the market for nanotechnology will reach such a large potential market of 1.4 trillion U.S. dollars. In fact, nano (nm), like meters and micrometers, is a unit of length, 1 nm = 10-9 m, which is about an order of magnitude longer than a chemical bond. Nanotechnology is a science that studies the law of motion and interactions of systems consisting of substances with sizes between 0.1 and 100 nm and possible technical problems in practical applications. Can be derived from nanoelectronics, mechanics, biology, materials science processing and so on. Nanometer as a mesoscopic scale, between atoms and molecules. Nanotechnology into a very small scale, is considered to save resources, reduce the pressure on the ecological environment, there is great potential to achieve sustainable development. At the same time, nanotechnology also plays an important role in upgrading and upgrading traditional industries in our country. Currently, scientists are most concerned about nanomaterials, which is also a study that can be closely integrated with mechanical products. Nanomaterials refer to materials with a dimension of at least one dimension on the nanometer scale (1-100 nm) on a three-dimensional scale. They are a new generation of nanomaterials with sizes between atoms, molecules and macroscopic systems. Due to the small size of its constituent elements, the interface occupies a significant portion of the composition. Therefore, nanomaterials have many characteristics, which leads to many special properties of the system composed of nanoparticles, which are different from the general bulk macroscopic material system. Nanomaterials include nano-powder, nanowire materials, nanotubes, nano-building materials, nano-films and nano-block materials. Because of the mesoscopic scale of nanometer, nanomaterials have many special properties. For example, most nanomaterials have huge surface interfaces, and the quantum size effect caused by small size produces special light, electricity and heat. For example, nanomaterials have stronger mechanical properties (such as strength and toughness). For nanocrystalline ceramics, nanocrystallization is expected to solve the brittleness of ceramics and may exhibit similar plasticity as metal and other materials. Research on the application of nanomaterials manufacturing equipment started relatively late in China, but what is exciting is that a research group headed by director Lou Lu of the Institute of Metal Research, Chinese Academy of Sciences in 2003 used surface nanocrystallization of metal materials to solve the problem of surface nitriding of metal materials Breakthroughs have been made in this major technical issue. The group led by Luke first surface-nanocrystallizes pure iron to obtain nanocrystalline structures in a few tens of micrometers of the surface layer. Then, the surface nitridation was successfully achieved by conventional gas nitriding treatment at 300 ℃ for 9h, and a 10μm thick nitride layer was obtained. The performance test results showed that the formed surface nitrided layer has high hardness and wear resistance And corrosion resistance. Tieling valve put "satellite" In 2003, Tieling City, greater efforts to reform the city's enterprises, requiring Tieling Valve Co., Ltd. around the sewage treatment with large diameter low-pressure valve for technological innovation, develop new products, improve product quality and improve Enterprise property rights system reform, based on the development and expansion of the formation of groups to rebuild Tieling valve in the country's market position. At the end of the planning period, the annual sales revenue will be 500 million yuan. At the same time, it is required that enterprises speed up the pace of reforming traditional industries with high-tech and raise the level of traditional industries and equipment. By 2010, the comprehensive technological level of the three major industries will reach the international level in the early 1990s; and the industrialization of high-tech industries will be accelerated. During the planning period, the output value of high and new technology accounted for 20% of the total industrial output value and the export of high and new technology products accounted for 15% of the industrial finished product; the conversion rate of high and new technology achievement reached a moderate scale was 15%; the output value of new products accounted for 20% of the total industrial output value %.
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