Hyperboloidal spheroidal iron steel ingot mould

The utility model belongs to a mould for a casting ingot in the field of metallurgy. The utility model is characterized in that the inner and outer walls of an iron steel ingot mould are of curved surface structure, the transverse direction of the inner cavity of the iron steel ingot mould, and the transverse and longitudinal directions of an external shape are cambered. The spheroidal iron steel ingot mould with the structure can effectively prevent the deformation in the course of use is favorable to the fair distribution of thermal stress, is favorable to eliminating the early corner split of the spheroidal iron steel ingot mould, and can stably extend the service life of the spheroidal iron steel ingot mould. In addition, the cambered structure of the inner cavity can counteract the concave side of a steel ingot caused by the deformation of the steel ingot mould and can reduce the adverse influence on a moulding rate caused by the first rolling deformation.