Environmental aspects, as well as energy prices on global market play an important role in case of manufacturing light-weight car bodies in the automobile industry. Joining of aluminium, as one of the promising materials, however is a subject that has to be optimized. Riveting or laser welding, for example, are normally used in Europe, while in Japan resistance welding was traditionally the main joining process. In this study a new developed spot friction welding method of aluminium to produce bonnet and rear foor of MAZDA RX-8 is described. This new type of car was introduced to the market in April 2003. Aspects of production optimization (automatization, control, power supply) are described as well as improvements in avoiding spatter generation. Considering the expanded use of aluminum material in the future, not only reduction in costs of the material but also reduction in costs on the process side is important for the application of expensive aluminum compared with the steel. For this, the more evolution of manufacturing process making best use of the characteristic of aluminum is necessary.
Spot friction welding to achieve light-weight automobile-body
2004
7 Seiten, 6 Bilder, 1 Tabelle
Conference paper
English
Spot welding in automobile body manufacture
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