Wear of hardfaced valve spindles in highly loaded stationary lean-burn large bore gas engines

The second part of this work describes wear phenomena observed on specimens from laboratory experiments using a newly developed component test rig - the valve spindle tribometer. The authors describe their approach to investigate wear mechanisms by separated simulation of valve closure and peak combustion pressure depending on different key parameters such as valve closing velocity, temperature or atmosphere. From these preliminary results, probable wear mechanisms are derived and correlated with microstructural properties of the hardfacing alloys.