Abstract
A chromium layer about 100 μm thickness was plated on the 38CrMoAl cylinder liner and the chromium layer was mcro quilting milled by using quilting grinding machine. The tribological properties and wear comparison test were studied. The friction coefficient of the cylinder liner plated chromic layer and micro quilting milled is 15%–30% lower than the ordinary cylinder liner. The pits generated by micro quilting milling on the chromic layer surface had good effect of accommodating the abrasive grains and storaging lubricants, which improved the effect of the friction pair significantly. The single-cylinder machine run-in tests revealed that the cylinder liner with plated chromic layer and micro quilting milling had good wear durability, and was different wear mechanisms to ordinary cylinder liner.
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