Fem Simulation Of Tool Wear In High Speed Cutting Of Titanium Alloy Ti6al4v With Hydrogen Treatment

The problem of tool working life in cutting titanium alloys should be solved urgently in aircraft, spacecraft and other manufacturing industries. Researches indicated that titanium alloys with suitable amount of hydragon can improve the cutting performance and extend tool life. Therefore, it is very important and valuable to find out the tool wear performance in cutting titanium alloy Ti6Al4V with difference contents of hydrogen.In this paper, following works are carried out. Firstly, tool wear experiments, analyzing the tool wear mechanism and establishing the tool wear rate model. Secondly, analyzing the material model, frictional contact type and chip separation criteria, then the tool wear predication model are set up with finite element software ABAQUS. Finally, the variables of cutting process are extracted and the tool wear is calculated by the numerical model with Python programming.The paper focuses on finding out the tool surface temperature, compressive stresses, tool wear rate and tool wear variation tendency with the change of amount of hydrogen in cutting hydrogen titanium alloy Ti6Al4V. Results show that when the hydrogen content is up to 0.3%(mass ratio), the machinability and tool wear performance of the Ti6Al4V are the best.