Influence of Water Cooling on Orthogonal Cutting Process of Ti-6Al-4V Using Smooth-Particle Hydrodynamics Method

Abstract

A B S T R A C TTemperature control during the cutting process with different parameters such as cutting velocity and applying water cooling is essential to decrease the cutting force, increase the life of the cutting tool and decrease the machined surface temperature of work-piece. In this research, the temperature of machined surface and the chip-tool interface in orthogonal cutting process of Ti-6Al-4V were investigated using smooth particle hydrodynamics (SPH) method. The effects of cooling with different speeds and temperatures of water flow on the temperature of these surfaces were studied. The noncooling model is validated using experimental results. According to the results, a water flow with speed of 0.25 m/s at 20°C temperature causes a significant decreasing in the cutting force and the temperature on machined surface and chip-tool interface.

Effect of Various Microstructures Obtained from Heat Treatment on Machinability Behavior of Ti-6Al-4V Alloy

“…Heat treatment of the (α+β) titanium alloy above the β transus temperature leads to a 'lamellar' microstructural morphology, consisting of α platelets with an inter-platelet β phase. The 'lamellar' structure varies with cooling rate, ranging from colonized plate like α at a low cooling rate, a basket-weave morphology at an intermediate cooling rate and Widmanstatten at a high cooling rate, to martensite, when quenched in water [13,14]. When processed below the β transus, Ti-6Al-4V showed an (α+β) structure with the prior α phase retained to room temperature and the β phase transformed partly [15][16][17][18].…”

“…Titanium and titanium alloys are heat treated in order to increase strength, produce an optimum condition of ductility, machinability, and structural stability and reduce residual stresses developed during fabrication [12][13][14].…”

Single-phase and Two-phase Smoothed Particle Hydrodynamics for Sloshing in the Low Filling Ratio of the Prismatic Tank

“…Dehghani and Shafiei [16] used SPH for cooling on the orthogonal cutting process of Ti-6Al-4V. It showed SPH can be used to simulate other fields that are related to real-life engineering problems.…”