Development and optimization of bimetallic powder metal aluminium engine block crank journal machining

摘要

In the same general area of PM machining came a more specialized presentation from Todd Drouhard of Honda of America. A PM bearing cap on Honda's most popular V6 engine had a number of advantages over the previously used cast iron, but presented many challenges from a machining viewpoint when in mass production. These included tight tolerances on the journal for diameter, roundness and accelerated wear from the inherent porosity, which also leads to microvibration and poor thermal conductivity.