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Development of Aluminum Hood for the 2005 Model year LEGEND

Article of Honda R&D Technical Review Vol.16 No.2

Summary

An aluminum hood was developed for the 2005 model year LEGEND in order to reduce costs while maintaining durability and performance requirements and help ensure pedestrian safety.
We focused on materials cost reduction for the aluminum hood skin sheet by reviewing its chemical composition and developing a 5000 series alloy produced with the continuous casting directed rolling method for the stiffener sheet.
Planning for general purpose processing specifications, a PVC-free acrylic acid resin system mastic sealer for steel and aluminum was applied for adhesion between the various components. Continuous multipoint self-piercing rivets were applied for the reduction of machining costs. The surface was treated with a surface conditioner that has a zinc phosphoric crystal as its main component. This allowed the precise formation of a chemical conversion coating on the surface.
The frame structure of this developed hood was also optimized, enabling it to achieve the same performance in pedestrian safety as a conventional steel hood.

Author (organization or company)

Noboru HAYASHI(Tochigi R&D Center)、Katsutoshi ANDO(Tochigi R&D Center)、Masakazu KASHIWAGI(Tochigi R&D Center)

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