Determination of Unit Pressure Force in Material Volume in the Course of Refractory Stamping Press Moulding

Abstract

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.

Surface Remelting of Mold Inserts Made of NC11 Steel

“…As a result of the excessive wear of mold inserts, stampings of refractory material are prone to cracking and become unfit for the next production stage (firing). In view of stoppages and costs due to press retooling and replacement of the inserts, it became necessary to look for a solution enabling the extension of the service life of the components [1][2][3][4][5][6][7][8].…”