Abstract
High-speed milling of titanium alloy is widely used in aviation and aerospace industries for its high efficiency and good quality. In order to obtain good surface integrity, experiments of high-speed end milling were performed to investigate the influence of milling parameters on surface integrity. The results show that the surface roughness, surface topography, residual stresses and microhardness are significantly affected by feed per tooth and milling speed. Good surface state was obtained when feed per tooth, milling speed, milling width and milling depth is close to 0.08mm/z, 100m/min, 7mm, and 0.2mm respectively. High-speed milling is favourable for improving machining efficiency and surface quality and therefore should be widely used in manufacturing of aircraft thin-wall structure parts. This study provides a theoretical basis and experimental evidence for the surface integrity of machined high-strength alloy.
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