Powder Metallurgy Gears Expanding Opportunities


Powder metallurgy (P/M) is a precision metal forming technology for producing simple or complex parts to net shape or near net shape with little, if any machining. The mechanical properties of P/M materials are a direct function of density, composition, and microstructure. A systems approach to material and process selection permits the development of a microstructure suitable for the intended application. The technology as related to gear design and applications is reviewed. New materials and process technologies are reviewed for the comparability of P/M steel gears with cast or wrought steel. The strengths and weaknesses of the powder metallurgy process are examined, along with the challenges facing the industry.
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