Evolution of chip morphology during high strength stainless steel turning

摘要

During machining operation, the control of the chip morphology is essential in order to ensure the surface quality and to improve the chip convoying. However, the development of new materials with low thermal properties and high mechanical properties limits the chip fragmentation. In order to improve the knowledge of chip formation during turning of high strength stainless steel an experimental campaign has been done. The chip morphology and the cutting process have also been analysed. Concerning the cutting process, based on cutting power, the tests show a high influence of cutting speed and a poor influence of feed. The chip morphology and the chip formation show the difficult to get some fragmented and small chips. The chip fragmentation occurs generally with the chip curling which increases the strength inside the workpiece material.