Machinability of forged steels in interrupted cutting

Abstract An important component of the production costs of forged parts is the cost resulting from the cutting process: the improvement of the machinability of the workpiece material leads to a reduction of this cost. Machinability tests are carried out often by continuous cutting, but results obtained under these conditions cannot be transferred to interrupted cutting. However, the machining of drop-forged parts very often includes interrupted cutting, for example during milling and turning. In this paper the two procedures are examined and compared under similar conditions, with the aim of enabling a transfer of machinability test results.