"More than 30 years of reform and opening up have made China's major material countries and machinery manufacturing countries. Anti-fatigue manufacturing, heat treatment and surface modification technology may make China a key component manufacturing power, material power and high-end machinery and equipment manufacturing power."
On July 18, at the opening ceremony of the 11th National Heat Treatment Conference, Zhao Zhenye, an academician of the Chinese Academy of Engineering and the chairman of the 9th National Council of the National Heat Treatment Society, who had just retired as chairman, made a speech entitled “Implementing the Roadmap and Practicing the Chinese Dreamâ€. Enthusiastic speech. Taking advantage of the meeting, Academician Zhao Zhenye accepted an interview with the reporter of Science and Technology Daily.
It is impossible to become a mechanical manufacturing power without eliminating "formed" manufacturing China.
Zhao Zhenye, who is 78 years old, has a clear mind and a clear idea. He mentioned heat treatment and surface modification. He said with passion: "Material powers and machinery manufacturing powers are an important part of the Chinese dream. China has already reached a turning point in the fate of relations. It is urgent to explore a way to strengthen the country and upgrade the transformation process.†He introduced that the world's machinery manufacturing technology has developed three generations: “forming†manufacturing, surface integrity manufacturing and anti-fatigue manufacturing. Surface integrity manufacturing has created a monopoly of key component manufacturing powers and high-end machinery and equipment manufacturing in the US and Western developed countries. China has long been stuck in “formed†manufacturing, resulting in three problems of insufficient application of advanced materials and short life spans, poor reliability and heavy structure of key components, which affects the fact that China's machinery manufacturing industry cannot upgrade today. Anti-fatigue manufacturing is a new generation of advanced technology, an innovation in China.
Zhao Zhenye said that machinery manufacturing is the foundation and pillar of industrialization. High-end mechanical equipment is the leader of the machinery manufacturing industry. It is full of many scientific frontiers and high-tech inheritance. It is at the high end of the industrial chain and value chain and occupies the core position of the manufacturing industry. Anti-fatigue manufacturing is the only way to reach the manufacture of high-end mechanical equipment.
Zhao Lao said that a large number of catastrophic accidents indicate that key components are often the culprit of mechanical equipment failure. If the main bearing fails, the engine is destroyed, causing the machine to be destroyed. The failure of the docking bolts causes the aircraft to disintegrate, the train derails, the tower crane suddenly collapses, and so on. It can be seen that the key components determine the main functions of mechanical equipment, embodies the life, reliability and economic affordability of mechanical equipment. It is the core of mechanical manufacturing. High-end mechanical equipment developed countries are not the key component manufacturing powers. However, China's key components have three major problems: short life, poor reliability and high structural weight. The so-called key components refer to the rotating member blades, the disc wheel, the shaft, the transmission member gears, the bearings, the main bearing members, the aircraft landing gear, the docking bolts, and the like.
Zhao Zhenye said that key components are in service under extreme dynamics. The main failure mode is fatigue, often fatigue failure in advance, and more than 90% of fatigue failures originate from “forming†manufacturing. It is no exaggeration to say that if we do not solve the "three major problems" of key components, we will not be able to become a machine manufacturing powerhouse if we do not eliminate "formed" manufacturing China. Therefore, China's machinery manufacturing needs to clarify what is core technology, what to innovate, where to start and how to achieve innovation. The answer is yes: starting with long-life key components, innovative anti-fatigue manufacturing technology. Heat treatment and surface modification are the key technologies for the manufacture of high-end mechanical equipment, the core technology of anti-fatigue manufacturing, which gives the ultimate performance of advanced materials and gives the ultimate service performance of key components.
Mechanical engineering "internal medicine" gives advanced materials and key component properties
After the research team led by Zhao Zhenye innovated and established the anti-fatigue manufacturing technology system with heat treatment and surface modification as the core, the fatigue life of an advanced fighter landing gear reached 5000 flight hours without fail, and the load increased by 30% to continue to test 6000. The flight hours have not expired, reaching and surpassing the world's highest life expectancy of the US F-15 and F-16 fighter landing gears of 5,000 flight hours. Since its service in 1991, there has been no failure.
Zhao Zhenye said that heat treatment and surface modification are both theoretically strong and practical. It has always been at the forefront of the two majors of "Materials Science and Engineering" and "Machinery Manufacturing Engineering" and is a hot topic in developed countries. Developed countries such as the United States, Germany, and Japan all have specialized technological development roadmaps to continuously innovate technologies, improve industry levels, ensure the leading level of key components, and the monopoly of advanced materials and high-end machinery and equipment. Heat treatment and surface modification belong to the national core technology, which is the fundamental way out for the material power and machinery manufacturing power and the first demand for upgrading and transformation.
Zhao Zhenye emphasized that, unlike other technologies such as blanking and cutting, heat treatment and surface modification are the "internal science" of mechanical manufacturing, and the performance of advanced materials and key components is neither mountain nor water. Thus, although they are many times higher than other technologies in the economically affordable value chain of key components and mechanical equipment, they are not recognized; they are marginalized despite the ultimate performance of materials and the ultimate service performance of key components. Subsidiaryization is excluded from the key technologies of national science and technology development planning and cannot be supported by key research. It must be recognized that the introduction and imitation of China's machinery manufacturing and material powers, but can not achieve China's machinery manufacturing power and material power. Insufficient understanding of mistakes, metaphysics, quick success and shortcomings.
Based on this situation, Zhao Zhenye proposed and led the National Heat Treatment Society in 2011 to organize 8 academicians and more than 300 experts to discuss and submit the “China Heat Treatment and Surface Modification Technology Roadmap†to the relevant state departments in early 2014. Focus on 13 key areas and talent teams to create a “precision-efficient-economic-clean-industry†heat treatment and surface modification technology with Chinese characteristics, and reach and exceed the advanced level in foreign countries in 10-15 years, quickly realize advanced materials and long Life critical components. Focus on the "bottleneck" of the engine and transmission, and promote the transformation and innovation of high-end machinery manufacturing and advanced materials.
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