Abstract：In order to achieve the metal flow law in high-speed cold roll-beating, a contact state changing process from point contract to line contract and finally as face contract is achieved on the basis of the principle of high-speed cold roll-beating. Each stage of the metal flow pattern is analyzed according to the law of least resistance. A finite element analysis model is established based on the processing of involute spline, and a high-speed cold rolling forming process was simulated. The equivalent strain on different moments and the flow path of a set of nodes of the contact surface are analyzed, and the flow law of each node is obtained. The simulation analysis is compared with theoretical analysis results.

Keyword：high-speed cold roll-beating;metal flow law;point contract;line contract;face contract;