Tool wear has a huge influence on tool life and thus the cost of machining; therefore, it is important to identify cutting parameters and how they are affected by the wear processes. During hard turning abrasive, adhesiveand diffusivewear mechanisms occur. Which will be the dominant mechanism mainly depends on cutting conditions and cutting temperature. With help of wear models the single wear mechanisms can be described separately or, using the combined models, we can describe the combination of these wear processes. These models have importance from the point of view of finite element (FEM) simulations since simulation software uses one or more of them.
