Some key techniques such as material constitutive model, friction characteristics at tool-chip interface were discussed. And the constitutive equation for nodular cast iron 500-7 was established. Then the simulation software DEFORM-2D was used to simulate the orthogonal cutting process. Finally, the influences of cutting parameters and tool geometries on cutting forces, cutting temperature and chip morphology were analyzed. This study provides some academic support to the optimization of cutting parameters for nodular cast irons.