On December 12, 2009, at the “China Innovation Forum from Manufacturing to Creation – Equipment Manufacturing Revitalization Expert Forumâ€, Vice Chairman of the Standing Committee of the National People's Congress, President of the Chinese Academy of Sciences, and Chairman of the China Mechanical Engineering Society Lu Yongxiang A keynote report entitled “Towards Green and Smart Manufacturing: The Road to China's Manufacturing Development†was made. Lu Yongxiang pointed out that environmental and energy issues bring not only challenges but also opportunities. Strategic emerging industries will emerge as a result of the financial crisis. Who will seize the opportunity and who will compete in the future? Get active.
At present, the environment puts higher demands on the manufacturing industry. The energy shortage is increasingly restricting the manufacturing industry. The Chinese manufacturing industry must enhance its independent innovation capability, realize the coordinated development of man and nature, and realize the historical leap from the manufacturing power to the manufacturing power. The development of green manufacturing and smart manufacturing is the key to achieving this historical leap.
Recently, when the reporter interviewed Chen Changnian, consultant of the China Automotive Engineering Society, Chen Changnian repeatedly said that green manufacturing has become a necessary development path for the automobile industry and the entire manufacturing industry. Experts at home and abroad predict that we are now in the early stage of the fourth industrial revolution. For the automotive industry, for the machine tool industry, green manufacturing is the only way to the future.
Green manufacturing is the inevitable way
Chen Changnian cited a set of data to reporters. In 2009, China's automobile production reached 13.6 million, and it is expected to exceed 15 million this year. When the United States built 11 million vehicles, it had 5,000 automatic molding lines, and China now has only 20 or 30 automatic molding lines. We also manufacture more than 10 million vehicles. We need to use millions of tons of steel more than the United States, consume millions of kilowatts of electricity, and emit more than 10 million tons of carbon dioxide. This is typical of high energy consumption, high consumables, and high pollution. "Three high" manufacturing model - the initial stage of manufacturing technology.
China is moving from a big car country to a car power, but to complete the transformation of a car power, it is necessary to change the growth mode of China's automobile industry and achieve green manufacturing.
In Chen Changnian's view, in order to achieve green manufacturing, the automobile manufacturing industry must vigorously develop molding technology and replace molding technology with molding technology. "It is a strategic change to replace the cutting technology-based automobile manufacturing model with molding technology." According to Chen Changnian, the rear axle gears of Europe, America and Japan have already completed the excessive cutting from the cutting to the near net forming (cold hot warm forging). Material utilization can reach more than 90%, and most of us still use cutting technology.
China's steel output is the world's second to fifth total, except that the construction industry occupies most of the steel, and the high-consumption materials of the manufacturing industry are also a major destination for steel. China's mainstream cutting process has caused a large amount of steel to become chips. The entire manufacturing industry basically relies on cutting and processing, which consumes a lot of materials and energy. Such a machine tool composition can only be regarded as the primary stage of manufacturing. Green manufacturing has become an inevitable choice for the development of the manufacturing industry.
Grinding process opens the way for molding technology
After molding, most of the grinding process (including grinding, honing, grinding, etc.) is required. Therefore, the use of molding technology instead of cutting technology will inevitably bring about strategic changes in the field of cutting. In the future construction of machine tools in China, grinding machines should account for To a larger proportion, the proportion of the lathe should be greatly reduced. At present, our current situation is exactly the opposite. The proportion of grinding machines and lathes is seriously out of balance. In Chen Changnian's view, the serious imbalance of the proportion of cutting technology and forming technology, the serious imbalance of the proportion of lathes and grinding machines, has seriously affected and restricted the healthy development of China's auto industry and the entire manufacturing industry.
Chen Changnian said that as a developing country, the "three high" production stage is inevitable. However, after 30 years of rapid development, we have already possessed the technical foundation from the initial stage of manufacturing technology to the middle and high level. In particular, the current national special project of "high-end CNC machine tools and basic manufacturing equipment" is to change the car. The manufacturing technology is backward and the equipment is dependent on imports, which is even the only opportunity. We must seize the opportunity to realize the leap-forward development of automobile manufacturing technology and realize the “overtaking of the curveâ€.
Chen Changnian said: "The inevitable result of molding technology instead of cutting technology is to vigorously develop grinding technology, but unfortunately, in the past 30 years, our grinding technology can be said to be not developed, but relatively backward. For example, Shanghai Machine Tool Plant He used to be a leading company in China's machine tool industry for a long time, but now he has reached the second echelon."
Chen Changnian believes that the main technical bottleneck in the development of China's automobile industry is that core components (especially energy-saving and environmentally friendly engines and automatic transmissions) are subject to people and lack of independent technology. Second, manufacturing technology is backward, and key production lines and equipment rely on imports. Chen Changnian said, "It is expected that in the past half century, the automobile industry is still the world of internal combustion engines. The most effective way to save energy is miniaturization and dieselization." "Comparatively, diesel engines are 30% more fuel efficient than gasoline engines, global commercial vehicles. Almost all diesel engines, 50% of cars in Europe are diesel engines. To replace diesel engines with diesel engines, it is necessary to develop high-pressure common rail technology." High-pressure common rail technology has become the technical commanding point of the world's major auto companies competing for competition. The demand for equipment requires a large number of micro-nano precision CNC grinding machines and honing machines. Miniaturization requires turbocharging technology, and turbocharger manufacturing also requires precision grinding machines. For example, China's demand for high-precision honing machine tools for engine parts is about 250 units per year, valued at 125 million yuan. The development of high-precision CNC honing machines for engine parts and the development of high-performance precision honing tools for honing of engine parts are the requirements for green manufacturing in the automotive industry.
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