This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Study on the Improvement of the Frictional and Mechanical Properties of Nylon 6 Containing Lubricants used in Electric Power Steering Reduction Gears
Technical Paper
2005-01-1675
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Recently, with advantages in weight, noise, and cost, plastic gears are fast replacing current metal gears, and gradually expanding their scope of application. Despite such advantages however, plastic gears have been limited in their application due to their relatively low performance levels in the areas of strength, abrasion, and friction. In general, the addition of lubricants significantly improves its frictional properties. Such improvements, however, are often accompanied by deteriorating mechanical properties,. Therefore, the amount of lubricant added needs to be properly controlled.
In this research project, we composed GF-reinforced nylon resins of various compositions, tested the resins for mechanical, frictional, and wear properties, and tested and analyzed the synergy between the lubricants. We conducted these experiments in order to determine the composition of lubricants that best improve the frictional properties of plastic, while minimizing the deterioration of the mechanical strength of nylon 6 - the material used for the reduction gear of the Electric Power Steering (EPS) system we are developing. We then produced reduction gears using the composed materials, and performed stand-alone tests with the gears on jigs. Finally, we performed critical durability tests with the gears on the EPS to evaluate their applicability.
Recommended Content
Authors
Citation
Ha, D. and Kim, S., "Study on the Improvement of the Frictional and Mechanical Properties of Nylon 6 Containing Lubricants used in Electric Power Steering Reduction Gears," SAE Technical Paper 2005-01-1675, 2005, https://doi.org/10.4271/2005-01-1675.Also In
Advances in Plastic Components, Processes and Technologies 2005
Number: SP-1960; Published: 2005-04-11
Number: SP-1960; Published: 2005-04-11
References
- Kohan M.I. Nylon Plastics Hand book Hanser Publisher New York 2 18 1995
- Champetire G. Sekiguchi H. “Mechanism and Kinetics of Adiabatic Anionic Polymerization of Caprolactam in the Presence of Variable Activative” j. polym. Sci. 48 309 313 1960
- A Study on the Frictional Abrasion Properties of MMC 171 177
- Kang S. C. Chung D. W. “The Synthesis and Frictional Properties of Graphite Nylon 6 Composite” J. Korean Ind. & Eng. Chemistry 11 2 237 242 2000
- Sebenda J. “Comprehensive Polymer Science” Pergamon Press Oxford 3 1988
- Chung D. W. Kang S. C. “Synthesis and Friction Properties of Lubricant-impregnated Cast Nylon” Wear 239 244 250 2000
- Foulger S.H. “Reduced Percolation Thresholds of Immiscible Conductive Blends” J. Polym. Sci. Polym. Phys 37 1899 1910 1999
- A Guide to LNP's Internally Lubricated Thermoplastics LNP Engineering plastics Inc USA 5 7 1994
- Shipley, Eugene E. “Loaded gears in Action” Gear Handbook McGraw Hill First 1962 14 53
- Adams C.E. “Plastic gearing” Macel Dekker, Inc. New York 1986
- Egbers R.G Johnson K.G. “Shrinkage Compensation by Design: The Key to Parts Uniformity,” Plastic Engineer Aug. 1979 23 26
- White, J et al. “An Evaluation of Polymer Composite Materials for use in Mechanical Power Transmission Drives” Proc of the 5 th European Conf on Advanced Materials and Processes and Application 4 553 558 90-803513-4-2 Maastricht 1997