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 %. The municipal government specifically requested Seiko Group, Tieling valve two provincial-level technology center construction, and strive to join the provincial high standards and exemplary enterprise technology center ranks for the Tieling City, machinery manufacturing technology development, technology research, technology information delivery service . Tieling Valve Co., Ltd. is also a plus, live up to expectations, frequently released new products, "Little Satellite." In February, Tieling valve contract 2 high-pressure gate has been produced and assembled, shipped to Myanmar Banglang Hydropower Station, the contract amounting to more than 600 million. The iron valve company undertakes Banglow Hydropower Station No. 1 diversion tunnel 2 bottom hole high pressure gate production, after the site installation of its total height of 24m, a width of 7m, a length of 5.7m, welded by thick composite steel, the weight For 146t. Gate switch through the 350t hydraulic hoist operation. Its accuracy, surface quality requirements, manufacturing difficulty, short processing time, the task is arduous. In order to ensure product quality and delivery time, the company established the leading group of Banglang sluice, which is chaired by Mr. Liu Tienan, chairman and CEO of Hengli, and held 12 special meetings to solve 48 production technical problems. Made using a number of new technology and advanced manufacturing tools, thus ensuring the smooth completion of gate production. The expert appraisal, that the iron valve manufacturing company to fill the domestic manufacturing gap, the explosive forming composite plate material is also the first time in our country. Tieling valves have been equipped with the conditions for the production of large-scale deep-water high-pressure composite gate, and ranks among the advanced manufacturing in the world of super large gates. In September, China Innovation and Technology Network broke the news again: Tieling Valve Co., Ltd. applied nanotechnology to develop butterfly valve products sold both at home and abroad. Tieling Valve Co., Ltd. and the Chinese Academy of Sciences Institute of Metal jointly developed sludge erosion erosion butterfly valve is the production of assembly, the application of new products, the successful development of nanotechnology iron valve company's scientific and technological progress to a new level . However, the combination of nano-materials and equipment manufacturing is not easy. Wu Hongnian, deputy general manager of Tieling Valve revealed to us that the nano-valve is cast iron forging and the surface adopts laser cladding technology and is fully modernized in equipment manufacturing. Valve surface hardness of HRC35 ~ 40, but very wear-resistant, life expectancy than expected to improve 3 to 4 times. Valve to check the Yellow River in Ningxia project a year, if there is no problem before trial success. At this stage, the whole cast iron cladding technology for research difficulties. Scientists keep their mouths The Institute of Metal Research, Chinese Academy of Sciences was founded in 1953, is a domestic first-class research institute in the field of materials science and engineering, corrosion science and protection. Institute of materials science and engineering research to adhere to the direction of scientific research, high-performance metal materials, new inorganic non-metallic materials and advanced composite materials as the main direction of the study of the structure of these materials, performance, causality and its interoperability and protection technology , And pay attention to material preparation and processing and engineering research. Institute and the general machinery manufacturing industry has close cooperation, especially in the field of anti-corrosion materials, fruitful. For example, phosphoric acid slurry pump corrosion resistant alloy, hot mining wellhead valve sealing surface wear-resistant composite coating and other technologies. Wang Tiechen, who is in charge of the Institute of Metal Research, Chinese Academy of Sciences who is involved in the research on Tieling nano-valve, is Dr. Wang Maocai, director of the Institute for Corrosion and Corrosion of Three Materials Laboratory. Wang Maocai graduated from the University of Illinois, United States, for composite materials and composite coating cladding process for many years. However, Wang Mao did not appreciate the relevant reports on the nano-valve. "Now to do a down-to-earth research, technical research and we are still trial stage, before the egg hatch chicken do not think of a few before God God, it is called success. Welcome to the metal at any time. "Although the interview can not be carried out, I am very happy in my heart that I am glad that we have such a rigorous, low-key, straightforward and peaceful scientist. Our equipment manufacturing industry too needs such fundamental research scientists; general machinery too need their research can translate into real results. However, I still understand the laser cladding technology knowledge. Laser cladding techniques include additive particle and in-situ synthesis. The composite coating was obtained by laser cladding. The microstructure of the matrix changed with the composition of the surface pre-alloyed powder. The successful laser cladding process is to dry the metal powder at 150 ℃ for 2 h, preset on the substrate, precoated thickness of 0.7 ~ 0.8mm, put into a special controlled atmosphere processing chamber, vacuum Argon to ensure that the alloy powder is not oxidized during laser processing. Using JJ-D-400 Nd: YAG solid pulse laser processing machine for laser cladding, resulting in wear-resistant, corrosion-resistant metal surface. Cladding process conditions for the single pulse 50J, frequency 4Hz, pulse width 5ms, focal length 200mm, spot diameter 2mm, scanning speed 1.1 ~ 5.0mm / s. The combination of nanomaterials, the experts believe that the surface nitridation temperature of the material can be significantly reduced using surface nanotechnology, so that the application of surface nitriding technology greatly expanded the application; but also shows that by surface nanotechnology can achieve the material surface structure Selective chemical reaction. This result shows that nanotechnology has an important role in promoting the upgrading of traditional industrial technologies. Afterword comprehension a lot In many advanced manufacturing technology, the application of Tieling valve manufacturing technology is only precision forming technology in surface engineering. However, every bit of processing technology and technological advancement permeate the sweat of scientific researchers. In the blue book "Made in China" co-founded by Chinese Academy of Sciences and Chinese Academy of Sciences, it pointed out the current development of China's advanced manufacturing technology. Computer-aided design (CAD) technology has gained popularity; rapid prototype manufacturing technology has begun to take shape; precision forming and processing technology has greatly improved; thermal processing technology has made significant progress in simulation technology; laser processing industry application of economic benefits; Market share has increased; field bus intelligent instrumentation research and development have made significant progress; micro-mechanical research is progressing rapidly; modern integrated manufacturing system (CIMS) research and application of a breakthrough; new production model to promote manufacturing technology and modern management. Although it is a great delight to have many achievements, at the same time that we have seen so many achievements, we must also find out our problems. Abroad, engineers can apply subtle observations to the development of realistic science and technology. For example, when people found that shark's body surface is not smooth, but there are many protrusions, but the sharks swim fast in water, so after research, the rough surface is more fluid than the smooth surface movement. Americans study the applied aircraft wing material surface, the aircraft flies more smoothly, and save 1%. This finding for the pump flow channel or valve within the channel What is the result? Metals have the same bionic technology research, but in the original design technology, the introduction of general mechanical products and more independent development of less. There are also manufacturing processes and equipment, manufacturing process automation technology negative, China's manufacturing industry is still in a small amount of ownership, low-level use. In addition, the management ideas and technologies such as on-time production, lean manufacturing, agile manufacturing and green manufacturing in foreign countries have not been promoted in the manufacturing industry in China. At this moment, I have a deeper understanding of the words of Dr. Wang Maosheng: "Now we must do research in a down-to-earth manner and conduct technical research."