Indonesia Conference Directory

Machining of titanium alloys remains a challenging task due to its low thermal conductivity and other inheritance properties. This phenomenon often causes the reduction of tool life, increasing production cost and time. Several factors play role in determining the tool life such as cutting speed, feed, chip formation, and tool geometry. The current work investigates the effect of tool geometry and feed to the cutting temperature, force, and chip formation. Finite element method (FEM) is implemented to model orthogonal cutting process in the titanium alloy (Ti6Al4V). We use Johnson-Cook (J-C) material constitutive model and Johnson-Cook (J-C) fracture-damage model to simulate the process. Our results demonstrate that at the rake angle of 0° the cutting force and cutting temperature reach maximum value of 490 °C. The temperature decreases to around 370 °C if the cutting rake angle changes to 10°. Feed seems to have low impact in the temperature. The effect of feed and rake angle is more pronounced in the cutting force.