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At the inauguration conference of “Automobile Lightweight Technology Innovation Strategic Allianceâ€, experts of the Expert Committee of the Alliance, in the presentation of the Alliance Automotive Lightweight Materials and Key Technology Development and Applied Research Projects, said that after the completion of the project, a lightweight generic technology research and development platform will be formed. Typical lightweight materials and related application technologies are expected to reach the current international advanced level.
According to experts, the alliance member units will carry out research on key technologies for general automotive light weight under the protection of a state grant of 100 million yuan and self-funding of 500 million yuan by enterprises. From 2008 to 2010, the company completed 10 topics including the design of new light weight materials, advanced molding technology for light weight materials, basic technology for lightweight application common platform, and platform construction, and basically formed the core of the automotive lightweight technology innovation system. .
The project will proceed from national needs and market needs, aiming at product weight reduction, energy saving, and safety improvement. Through lightweight materials and key application technologies, original innovation, and integrated innovation, the company will develop and apply self-owned brand vehicles in typical lightweight materials. The key technology fields catch up with the current international advanced level. Improve the production and market competitiveness of self-owned brand products and enhance the independent development capabilities of local enterprises.
The company is focusing on the development and application of advanced lightweight materials and key technologies to achieve product weight reduction, energy conservation and emission reduction, improve collision safety, and improve the technical level and market competitiveness of self-owned brands. In combination with the actual conditions of enterprises, implementation of integrated innovation and Original innovation targets, establish a common technology research and development platform for lightweight, provide support and demonstration examples for industry promotion and sustainable development. Grasp the application of lightweight materials such as high-strength steels, aluminum-magnesium alloys and plastic composites, realize the application of high-strength steels in car bodies, advance the application of aluminum-magnesium alloys in bodywork, chassis, powertrains and plastic composites in a typical zero Application of parts. Master advanced forming technologies such as high-pressure forming technology, aluminum alloy semi-solid forming technology, laser tailor-bonded plate forming technology and ultra high-strength steel forming technology.
Through technological breakthroughs, combined with lightweight design of products, some alliance member companies have reduced their weight by 8% to 10% and their fuel consumption has been reduced by more than 6%. The safety meets the mandatory safety standards for the frontal and side impacts of the national car and meets the current lightweight level of similar international products. Commercial vehicles reduce the weight of about 300 kilograms, and the steel used in the frame reaches the current international advanced level.
We have developed lightweight generic technologies that have independent intellectual property rights and have a major impact on the industry. Formulate relevant technical standards for light weight materials, master special testing methods for related parts and components, build China's first database that combines lightweight material properties, structural design and performance of parts and components, and present strategies and policy measures for the development of lightweight automobiles in China.
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Foreign proposed multi-material structure lightweight design concept
Energy-saving, environmental protection, safety, comfort, intelligence and networking are trends in the development of automotive technology. Energy conservation and environmental protection in particular are related to the sustainability of human development. Therefore, reducing fuel consumption, reducing carbon dioxide, and emission of harmful gases and particulate matter have become the main directions for the automotive engineering community. Material technology is the key to the advancement of automotive technology. Lightweighting is the key to the development of automobiles in the future.
Foreign material experts put forward the concept of lightweight design of multi-material structures. Some experts from the University of Paderbom, Germany, put forward the concept of “multi-material lightweight structures†and “appropriate materials are used in suitable locationsâ€.
Experts believe that the multi-material structure design represents the development trend of the automobile structure in the future. Optimizing the multi-material structure not only improves vehicle performance, but also significantly reduces weight. The current combination of materials is still dominated by high-strength steels, aluminum, magnesium and plastics. To achieve a multi-material lightweight structure design, it must be emphasized that "appropriate materials are used in appropriate locations."
