Sustainable High-Speed Milling of Magnesium Alloy AZ91D in Dry and Cryogenic Conditions

Magnesium alloy AZ91D is used extensively in the automotive industry because of its high strength-to-weight ratio. Typically, components produced using are required to have good surface finish and contribute productivity but require long cutting times. Cryogenic cooling an environmentally friendly technology which has been proven improve tool life finish. This paper presents investigation on effects dry cryogenic conditions at a speed regime for milling magnesium alloy. study focused high-speed due chips being highly combustible effective means decreasing temperature zone was great concern. The machining experiment carried out uncoated carbide end utilizing full factorial design (L16) with speeds 900 m/min 1300 m/min, feed rate 0.02 mm/tooth 0.05 mm/tooth, axial depth cut 0.2 mm 0.3 mm, radial 10 40 mm. For machining, longest flank wear (VBmax) 0.21 30 min, obtained Using this condition, mirror-like 0.106 µm produced. under condition VBmax maximum 1864 min achieved Under lower 0.091 obtained. It can be concluded that application liquid nitrogen (LN2) very enhancing obtaining better-machined surface, especially m/min. A longer high-quality machined parts will significantly cost savings related industry.