High Strength P/M Gears for Vehicle Transmissions
Abstract
Phase I of US Army / TARDEC sponsored project entitled High Strength P/M Gears for Vehicle Transmissions has been successfully completed at ARL Penn State. The primary objective of the project was to develop high strength P/M steel gears with bending strength and surface durability performance equivalent to current wrought steel gears, and to demonstrate potential for significant cost savings. The project technical approach was to apply ausform gear finishing to P/M steel gears in order to increase the bending strength, and more importantly the surface durability of P/M gears, thereby making ausform finished P/M gears the preferred components for US Army / DoD ground vehicle transmissions. In the just completed Phase I of the project, ausform processing technology was developed and applied to hot forged P/M gears produced by Keystone Powdered Metal Company, selected as the prime industrial partner for the program. Performance of ausform finished P/M forged steel gears was demonstrated to be comparable to or better than wrought steel gears in comparative bending fatigue, surface durability and gear tooth impact tests. Cost of producing high strength P/M steel gears produced by processing techniques developed in this program is about 43% lower than for wrought steel gears of equivalent quality.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 30, 2007
- Accession Number
- ADA629560
Entities
People
- Nagesh Sonti
- Suren Rao
Organizations
- Pennsylvania State University