PM - Connecting Rods: Porosity Versus Performance - An Inevitable Conflict?
Date Published: 1996-02-01
Paper Number:960383
DOI: 10.4271/960383
Citation:
Ernst, E., Eilrich, U., and Weber, M., "PM - Connecting Rods: Porosity Versus Performance - An Inevitable Conflict?," SAE Technical Paper 960383, 1996, doi:10.4271/960383.
Author(s):
E. Ernst - Krebsöge
U. Eilrich - Krebsöge
M. Weber - Krebsöge
Since many years sinterforged con-rods produced via different forging processes (near net shape or net shape forging) are successful in operation in several automotive engines. Latest results of different con-rod projects (partially funded by the German Government) show that even sintered components with densities in the range of 7,1 g/cm
3
offer fatigue strength values comparable
to those of sinterforged con-rods. The processing has a major influence to the fatigue behaviour and to machinability. Experiments with test bars allow only limited correlation to real components. So it is necessary to compare performance and cost-structure of finished con-rods to give a reliable evaluation for the capabilities of different manufacturing routes.
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