This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Development of High Thermal Conductivity Cast Iron for Brake Disk Rotors
Annotation ability available
Sector:
Language:
English
Abstract
A new brake disc rotor material has been developed that provides excellent resistance to heat cracks.
Hair cracks have been found to develop in the surface of brake disc rotors as a result of repeated braking from high speed.
The results of a finite element analysis revealed that these cracks are generated in the early stage of braking because of temperature differences between the surface and interior of the brake disc rotor.
The newly developed cast iron has a high carbon and a low silicon content, which works to improve its thermal conductivity, and molybdenum has been added to prevent any decline in strength.
The results of high speed braking tests show that the new material provides superior resistance to heat cracks.
Recommended Content
Authors
- Yoshio Jimbo - Materials Experiment Department, Nissan Motor Co., Ltd.
- Takahiro Mibe - Materials Experiment Department, Nissan Motor Co., Ltd.
- Kouichi Akiyama - Materials Experiment Department, Nissan Motor Co., Ltd.
- Hiromichi Matsui - Chassis Design Department, Nissan Motor Co., Ltd.
- Manabu Yoshida - Chassis Design Department, Nissan Motor Co., Ltd.
- Akihiko Ozawa - Chassis Experiment Department, Nissan Motor Co., Ltd.
Citation
Jimbo, Y., Mibe, T., Akiyama, K., Matsui, H. et al., "Development of High Thermal Conductivity Cast Iron for Brake Disk Rotors," SAE Technical Paper 900002, 1990, https://doi.org/10.4271/900002.Also In
References
- Fukano A. Matsui H. “Development of Disk-Brake Design Method Using Computer Simulation of Heat Phenomena,” SAE Technical Paper 860634
- Kempers H. 53 1966
- Nechtelberger E. “Systematic Investigations to Improve the Quality of Cylinder Head Cast Iron with Special Reference to the Tendency of Crack Formation, Part 2-Results of Thermal Shock Testing,” Internal Report-Oesterreichishes Giesseti-Institute 1975
- Trbizan M. 120 1975
- Bungardt K. Motz J. 44 1957
- Gundlach R. B. “Elevated Temperature Properties of Alloyed Gray Irons for Diesel Engine Conponents,” AFS Transactions 86 1978
- Crosby V. A. Timmons G. A. “Metallurgical Aspects of Brake Drums for Heavy Dusty Servise,” Foundry July 1940
- Augus H. T. “Physical and Engineering Properties of Cast Iron,” British Cast Iron Res. Ass. 1960
- Gilbelt G. N. J. “Engineering Data on Cast Iron,” British Cast Iron Res. Ass. 1968