April 24th, 2012, Shanghai – With the concept of lightweighting of special vehicles being further promoted in China, Ruukki Roche jointed with the China Automotive Engineering Society Special Purpose Vehicle Branch, and was present in Qingdao, Wuhan, and Guangzhou on April 23–27. The "High-strength Steel Application Technology Symposium" was held to discuss how to use high-strength steel to achieve lightweighting. Industry experts from the Society, as well as technical experts and senior management staff from Roach, shared relevant application technologies and successful cases.
The rapid development of China's special-purpose vehicle market has become the world's largest special-purpose vehicle market. However, there is still much room for improvement in terms of its product technology and specifications. Compared with European standards, the average weight of China's special vehicles is 17% higher, which means more fuel consumption, more carbon dioxide emissions and lower loads. The key to solving these problems lies in the application and process of new materials. By lightening the vehicle, it can save up to 37%.
At present, the multi-material body structure design has become a development trend. Through the optimization of the body structure, it can not only improve vehicle performance, but also significantly reduce its own weight. Current high-strength steels, wear-resistant steels, and aluminum materials have become the main materials for the relevant combinations, emphasizing the use of suitable materials for the appropriate parts. Among them, high-strength steel and wear-resistant steel are mainly used in heavy-duty trucks and road dump truck bodies, semi-trailer girders, pull-arm hooks, and rack arms.
As Europe's leading supplier of special steel and engineering solutions, Ruukki Roach shared the history and current status of the development of high-strength steel applications in Europe and the United States in this technical seminar; introduced imported Raex RX wear resistance from a technical perspective. The performance of steel products, their application analysis in the car and dump truck body, as well as design and processing technology. For the domestic special car manufacturing companies to promote product upgrades has brought new solutions.
Mr. Yu Changjiang, general manager of Ruukki Roach's steel business department in China, said: “The European market has high requirements for the standard setting of carbon dioxide emissions, and Roach has accumulated rich experience in the development of high-strength steel and application of special-purpose vehicles. Many successful cases prove that scientific steel applications can realize lightweight bodies that are comparable to aluminum special vehicles, while significantly reducing production costs, and we hope that these successful experiences and advanced technologies can promote the lightweight products of local special vehicle manufacturers. Develop and gain market success."
Ruukki Roach owns two brands, Raex Rix and Steel Optim. Raex Rix abrasion resistant steel hardness range 400-500HB, the thinnest thickness up to 2.5mm, suitable for body side panels and floor; Optim high strength steel yield strength range 700-1100Mpa, mainly used as structural parts , can achieve direct welding, greatly simplify the production process and reduce production costs.
Relevant parties have stated in this regard: “The application of lightweight materials such as high-strength steels and aluminum alloys is one of the best ways to realize lightweighting of special vehicles. In the development and application of new materials, China and the developed countries in the world are still quite large. We hope that through this form of cooperation and discussion, we will open up new ideas for the development of China's special-purpose auto industry and accelerate the process of lightweighting."
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