Keystone Powdered Metal
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Excellence Awards Competition, sponsored by the Metal Powder Industries Federation, were recently announced at the POWDERMET2015 International Conference on Powder Metallurgy & Particulate Materials. Receiving grand prizes and awards of distinction, the winning parts are examples of PMâÂ€™s precision, performance, complexity, economy, innovation and sustainability. The winning parts show how customers from around the world are taking advantage of PMâÂ€™s design advantages.
During the past 10 years, the PM industry has put a lot of focus on how to make powder metal gears for automotive transmissions a reality. To reach this goal, several hurdles had to be overcome, such as fatigue data generation on gears, verification of calculation methods, production technology, materials development, heat treatment recipes, design development, and cost studies. All of these advancements will be discussed, and a number of vehicles with powder metal gears in their transmissions will be presented. How the transmissions have been redesigned in order to achieve the required stress levels while minimizing weight and inertia, thus increasing efficiency, will also be discussed.
Key technical drivers which can be addressed by advanced PM manufacturing technologies are, for example, the need for system downsizing in transmissions and differentials, the need for developing systems with higher power density and the strong NVH (Noise Vibration Harshness) requirements - especially for electrified transmissions or e-axle solutions.
The best growth market, perhaps in spite of ourselves, is the United States.
Winning parts from the 2013 Powder Metallurgy Design Excellence awards.
There are no alchemists at the California Institute of Technology, but a team of research scientists at the Pasadena-based institution is doing some pretty remarkable things "transforming something common into something special."
This paper summarizes the chemical, metallurgical and physical aspects of bearing steels and their effect on rolling bearing life and reliability.
The complete Industry News section from the December 2013 issue of Power Transmission Engineering.