Grading ring forming die

The utility model discloses a grading ring forming die, which belongs to the technical field of grading ring production equipment and comprises a die holder, a die core is erected at the upper end of the die holder, and a die cover is erected at the upper end of the die core. And the outer ends of the mold core and the mold cover are fixedly connected with a grip. And the outer end of the grip is fixedly connected with a spherical block. The mold base comprises a base body and a limiting ring, a first mold groove is formed in the upper end of the base body, and the limiting ring is fixedly connected to the upper end of the base body. The mold core comprises a mold block, a first annular inner mold and a positioning ring, a second mold groove is formed in the upper end of the mold block, the mold base is placed on a target table top, then the mold core is erected on the mold base, then the mold core is overlapped, then the mold core is covered with the mold cover, then molten metal is poured into the mold core