The paper presents results of assessment of the unit pressure force within the refractory material volume in the course press-moulding of

stampings for refractory precast shapes. The force was evaluated with the use of physical simulation of deformation undergone by lead

balls placed in the raw refractory mass subjected to pressing in a metal die. To determine the value of unit pressure force applied to the

aggregate grains in the course of stamping press-moulding, physical model of deformation of a sphere induced by the uniaxial stress state

was used.