Evaluation of machinability for copper alloys based on wear-mechanism maps

摘要

An attempt is to construct wear-mechanism maps for C3604 and Eco-brass by using pin-on-disk dry sliding wear test, and then to evaluate of machinability for those alloys based on the maps. It is possible to evaluate the qualitatively wear behaviour for new copper alloys over a broad range of load and sliding speed. A evaluation of machinability has been used to utilize wear-fracture map for high-speed steel (HSS) cutting tools during dry turning operations. Its wear-fracture transition for HSS tools is determined for the highest limit on a cutting speed and a feed. At low-speed cutting, given finished condition on the machined surface is determined the lowest limit on the turning condition. Also, these method are applied to the time-dependent processes such as tool wear. This character is obtained by wear-results on its mechanism map. These procedures can determined a cutting speed and a feed for safe turning operation. The results are in good agreement with the experimental data.