Rolling forming method of H-shaped section ring piece

The invention relates to a rolling forming method of ring pieces and forge pieces, in particular to a rolling forming method of an H-shaped section ring piece. The rolling forming method includes the following steps that the rolling ratio is determined, the ring piece blank dimension is determined, ring piece rolling is carried out, an upper conical roller and a lower conical roller abut against the upper end face and the lower end face of a ring piece blank correspondingly, the upper conical roller and the lower conical roller rotate around the axes of the upper conical roller and the lower conical roller, the upper end face and the lower end face of the ring piece blank are rolled, the upper conical roller and the lower conical roller are provided with annular bosses, and the annular bosses are matched with grooves of the H-shaped section ring piece; and a center roller abuts against the inner wall of the ring piece blank, the ring piece blank is rolled, and a support roller abuts against the outer wall of