Forging die and forging method for large blind hole forge piece

The invention provides a large blind hole forge piece forging die and a forging method, and belongs to the technical field of forge piece forging, the forging die comprises an upper die and a lower die, the upper die comprises a punch rod and a punch head, the punch rod and the punch head are detachably connected, the end portion of one end of the punch rod is hemispherical, the punch head is in a hemispherical shell shape, and the end portion of the other end of the punch rod is in a spherical shell shape. The punch is used for being arranged at the end of one end of the punch rod in a sleeving mode, and the lower die is of a cylindrical structure with an opening in the top. According to the forging die for the large blind hole forge piece, the backward extrusion die forging forming technology of the large blind hole forge piece can be achieved, the problem that a punch and a blank are locked in the die forging forming process is solved, and industrial production of the large blind hole forge piece can be ac