Among the newly released Teana models by Dongfeng Nissan, ultra high strength steel with more than 590 MPa car body application ratio reaches up to one third, with 980 MPa of maximum strength; While maintaining the most powerful engine in same level, one hundred kilometer integrated operating condition fuel consumption reaches 7.3 liters, which is the lowest fuel consumption. This is what reporter learns in the recent Baosteel automobile plate lightweight solution seminar and Dongfeng Nissan new Teana launchment appreciation meeting. Baosteel auto plate synchronously supports automobile lightweight, ensures that car users have good driving experience and makes cars safer and more fuel-efficient.
According to research and estimation, auto body accounts for about 30% of the total auto weight. Under no-load condition, about 75% of gasoline consumption is on auto body weight. If auto body is reduced by 100 kg, fuel consumption per 100 km can be reduced by 0.3-0.6 liters and carbon dioxide emission per kilometer can be reduced by about 5 grams. Thus lightweight is an effective way to reduce vehicle fuel consumption and emission and improve vehicle fuel economy. At present, high-strength steel has been proved as the most economically viable material in realizing vehicle lightweight. It allows the car to maintain a better safety performance while losing weight at the same time. By European standards, the collision strength of auto body which does not use high-strength steel has only one star, while for those which uses high strength steel for more than 50%, the collision strength can reach the highest level: five stars.
From the beginning of the 1990s, Baosteel gradually begins promoting high strength steel research and development and trial work. Through new material and new technology development, it brings about stronger and lighter design program. Through early intervention model and involvement in car factory new model design, it realizes automobile lightweight. At present, Baosteel is the only steel enterprise in the world which can mass produce the first generation, the second generation and the third generation advanced ultra high strength steel. Baosteel is equipped with advanced lightweight new technology industrial capacity such as laser welding, hydroforming, hot stamping and roll forming so as to better serve auto body industry chain.
Dongfeng Nissan is a joint venture of China Dongfeng Motor Co. and Japan's Nissan Motor Co. as well as Baosteel auto plate strategic customer. With the deepening of cooperation between the two sides, Baosteel auto plate steel covers almost all models of Dongfeng Nissan. All the inner part steel of the previous Teana generation is made by Baosteel. Back in 2009, Nissan and Baosteel has launched 980 MPa ultra high strength steel new car synchronous development and high-volume application on the new Teana.
On the appreciation meeting, Nissan material director and Baosteel automobile steel plate professionals introduce new Teana safety and lightweight design philosophy and automobile lightweighting solution, promoting automobile plate and automobile lightweight technological concepts among ordinary consumers.
