With the increasing environmental requirements in machining techniques, cryogenic machining technology gains more and more attention recently. We have carried out cryogenic cutting tests on 6061 aluminum alloy in this study. The effects of cryogenic cooling on machined surface roughness, surface hardness and surface functional properties were studied. The experiment results show that cryogenic cutting can reduce the surface roughness, improve the surface hardness, and thus the machined surface can obtain better wear resistance and corrosion resistance.

With the increasingly strict environmental protection requirements, cryogenic cutting technology as an environmentally friendly machining technology has received more and more attention. In this article, the affect of cryogenic cooling on the mechanical behaviors, cutting force and swarf shape of 6061 Aluminum Alloy were studied. Test result display that cryogenic increase strength of materials and reduces the plasticity of the material. Cryogenic cooling improves the cutting force and improves the chip breaking effect.