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Development of a Lightweight Manual Transmission Case of a Heat-Resistant Magnesium Alloy

Article of Honda R&D Technical Review Vol.14 No.2

Summary

A manual transmission case was developed by using a heat-resistant magnesium alloy that achieves a 24% weight reduction over a conventional aluminum alloy case. AE62-Ca was developed by improving the castability of the Mg-Al-Ca-RE-base heat-resistant magnesium alloy ACM522, which had a history of use in oil pans, and this new alloy was applied. At the same time, with the objective of achieving a more reasonable price, a recycling process was developed that resulted in a recycling yield on a par with general magnesium alloys. A formed-in place gasket was developed that provided adhesive strength without chemical treatment and fluorocation resin coating bolts were also developed to prevent galvanic corrosion at the contact surface.

Reference

(1) Koike, S., et al.: Development of Lightweight Oil Pans Made of a Heat-Resistant Magnesium Alloy, HONDA R&D Technical Review, Vol. 12, No. 1, pp. 167-174 (2000)

Author (organization or company)

Hideaki MIYASHITA(Tochigi R&D Center)、Masayuki NAKADA(Tochigi R&D Center)、Masayasu SAKATA(Tochigi R&D Center)、Yukihiro HAYAKAWA(Tochigi R&D Center)、Sadaharu MATSUMURA(Tochigi R&D Center)

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