PURPOSE: To unnecessitate post work or necessitate only a slight post work by hardly generating a Mannesman fault even if the draft is increased, and controlling the building-up of material around a annular groove.

CONSTITUTION: After a part to be processed with form rolling W' of a work W is heated with a high frequency heating coil 11, this is supplied to a form rolling device, the form rolling of the part to be processed with form rolling W' is executed with a rolling die 12 while applying a tensile force F of the axial direction on the work W, the tensile force operating on the axial center is reduced by stretching the work W to the axial direction, and the generation of a Mannesman fault is restricted.