Optimization of milling tool parameters and experimental study of cryogenic minimum quantity lubrication (CMQL) for SiCp/Al composites.

Silicon carbide-reinforced aluminum matrix composites (SiCp/Al) have excellent physical properties, but the presence of SiC particles in the reinforcing phase causes severe tool wear and more serious surface defects during cutting, which seriously hinders the machining efficiency of SiCp/Al composites. To improve the surface quality of SiCp/Al composites and improve the tool wear problem, it were carried out that simulation and experimental verification of the milling tool parameters of SiCp/Al composites and experimental study of CMQL with the selected tool parameters. The results show that the cutting tool with rake angle of 4° and relief angle of 10° can achieve efficient cutting of SiCp/Al composites. The CMQL condition can effectively reduce the surface roughness, improve the surface microstructure, reduce tool wear and increase tool life; The increase of cutting speed can reduce the machined surface roughness, while the increase of feed and cutting depth will lead to the increase of surface roughness. [ABSTRACT FROM AUTHOR]