Head forging aspects of new forming process of screw spike

Results of theoretical and experimental research associated with new forming process of screw spikes are presented in this present paper. Actual forming process of screw spikes consists in screw head flash forging and thread rolling realised by three rollers. Proposed new process consists of flashless head forging and thread forming using cross-wedge rolling process in double configuration. Head forging process simulation using finite volume method (FVM) and finite element method (FEM) of screw spike head forming process and experimental verification for obtained results were carried out. Comparison of forces values and flow kinematics is done. Good agreements of theoretical and experimental results are obtained. Industrial application of new technology is shown, too.