自動車ボディパネル用アルミニウム合金板の開発・適用動向

摘要

自動車の軽量化は，CO_2削減のために必要なキーテrnクノロジーの1つである。その中でも車体へのアルミニrnウム適用は大幅な軽量化が達成できることから適用事例rnが多くなっている。%The weight saving of automobile is very important technology for reducing CO 2 emission. The application of aluminum alloy sheet to automobile body is increasing because of the substantial weight saving can be achieved. However there are many technical issues to improve such as form-ability and paint bake response. The surface quality after stamping process which is elimination stretcher-strain marking and paint brush line is also required. The research and development have been carried out the enhancing of the application technology. Furthermore the spread of hybrid and electrical vehicle make more important for the weight saving. In this paper the trends of application and development of the aluminum alloy sheets for automobile body are reviewed.