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Development of Aluminum Alloy Roller Type Valve Rocker Arm by Casting and Forging Technique
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English
Abstract
The following is a report on the process development and materials for rocker arms.
This process is called a “hybrid process” which combines a casting process for blanks and a forging process.
To obtain high durability, aluminum alloy was selected based on eutectic Al-Si adding Cu, Mg and Mn. As the fracture load is about 2 times higher than that of diecastings of the same shape, the mechanical properties have been remarkably improved by the “hybrid process.”
Presently, rocker arms are being produced by a mass production system, providing superior performance to the new cars of MAZDA.
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Citation
Komatsu, S., Yahata, S., Fukui, K., and Tokoshima, T., "Development of Aluminum Alloy Roller Type Valve Rocker Arm by Casting and Forging Technique," SAE Technical Paper 890554, 1989, https://doi.org/10.4271/890554.Also In
References
- Mondolfo L. F. Aluminum Alloys, Structure & Properties 534 760 BUTTERWORTHS 1976
- Watanabe H. Satou E. The Practical Illustration of Alloy Phase Diagrams (nonferrous) 212 NIKKAN-KOUGYOU-SINBUNSHA 1966
- Kouda S. Photographs of Metal Optical Microstructures (nonferrous) 26 29 1972
- ASM Handbook Committee Metals Handbook 9th 9 356 7 ASM 1985
- Kamio A. SOKEIZAI 27 11 1986 28 37 THE MATERIALS PROCESS TECHNOLOGY CENTER