Abstract: The mathematical model of grinding force is systematically studied in grinding of Titanium alloys with silicon carbide wheel. The relationship between grinding force and percentage of adhesive area is analyzed, and the mathematical model of grinding force based on the adhesive phenomena during grinding of Titanium alloys is derived. This model takes into account the forces arising from wbrkpiece material removal and the forces caused by interaction between the workpiece material transferred to the active abrasive grains and the workpiece.In order to determine the percentage of adhesive area, the surface of the wheel is photographed with a microscope. The normal and tangential components of the grinding force, are measured with a strain gage dynamometer. The friction coefficient under the adhesive conditions is determined.The experimental results demonstrate that this model is feasible for the grinding of Titanium alloys.