LIGHTWEIGHT PISTON PIN AND METHOD FOR MANUFACTURING THE LIGHTWEIGHT PISTON PIN
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United States of America Patent
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Mar 16, 2017
app pub date -
Nov 30, 2015
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Sep 14, 2015
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Abstract
A method for manufacturing a lightweight piston pin includes preparing a mixture of a base metal powder comprising chromium, carbon and iron, a TiC powder and a binder, metal powder injection molding (MIM) the mixture into a piston pin shape, degreasing the molded body to remove the binder from the mixture, sintering the binder-deprived, molded body, forming an intermediate layer composed of chromium carbide that surrounds the TiC powder in the sintered body, and transforming a matrix structure of the sintered body into a martensitic structure.
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