Abstract
After sintering, cemented tungsten carbide inserts are ground in order to improve their surface integrity, which can be controlled by an adequate choice of the grinding tool. Within this context, two grinding wheels with abrasive grain sizes of 15 µm and 46 µm were used to finish WC-5%Co cutting inserts, applied afterwards in turning of AISI 4140 steel. It was demonstrated that the use of a smaller abrasive grain improved surface roughness and edge chipping, but decreased compressive residual stress. Nevertheless, compared to the larger grain, it led to a reduction of tool flank wear during turning.
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