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New Material with Improved Machinability and Strength for Powder Forged Connecting Rods
Technical Paper
2006-01-0603
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The powder forging (PF) process is used to produce fully dense powder metallurgy (PM) parts for high performance automotive applications. PF connecting rods have been widely accepted in the US, Japan, and other countries due to higher performance and lower manufacturing costs when compared to conventionally forged steel connecting rods [1, 2]. In order to meet and exceed requirements for higher fatigue strength and better machinability of PF connecting rods, a newly developed machinability enhancer, consisting of complex calcium oxide, named KSX, was introduced [3]. Minimal additions of KSX were found to be very effective in protecting the surface of the cutting tool during machining, with virtually no effect on mechanical properties obtained after the forging process. A comparison study between materials prepared with 0.3% MnS and with 0.1% KSX additions showed higher fatigue strength and better machinability in the case of the mix with KSX. These results were confirmed from fatigue tests on PF connecting rods.
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Citation
Suzuki, H., Sawayama, T., Ilia, E., and Tutton, K., "New Material with Improved Machinability and Strength for Powder Forged Connecting Rods," SAE Technical Paper 2006-01-0603, 2006, https://doi.org/10.4271/2006-01-0603.Also In
References
- Ilia E. O'Neill M. Tutton K. “Impact of Copper and Carbon on Mechanical Properties of Iron - Copper - Carbon Alloys for Powder Metal Forging Applications” PM2TEC 2004 Chicago, IL June 2004
- Ilia E. O'Neill M. Tutton K. Lanni G. Letourneau S. Hahnel M. “Benchmarking the Industry: Powder Forging Makes a Better Connecting Rod” SAE Technical Paper 2005-01-0713 Detroit, MI March 5-8 2001
- Furuta S. Seki Y. Tanaka H. Akagi N. Suzuki H. “Improvement of Machinability by Adding KSX that Contains Complex Calcium Oxide Powder” Proceedings of 2004 Powder Metallurgy World Congress 2 339
- Suzuki H. Sawayama T. “Comparison of Machining and Mechanical Properties between Manganese Sulfide and KSX in Powder Forged (P/F) Materials” PM2TEC 2005 Montreal June 2005
- Standard Test Methods for Metal Powders and Powder Metallurgy Products MPIF Princeton, NJ 2003
- Japanese Industrial Standards Ferrous Materials and Metallurgy Japanese Standards Association