STIMULATION OF THE CRYSTALLIZATION PROCESSES OF CASTS OF PETRURGICAL MATERIALS OBTAINED BY THE GAS COUNTER-PRESSURE CASTING METHOD

  • 1 Bulgarian Academy of Sciences, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre, Sofia, Bulgaria

Abstract

Test recipes of petrurgical materials, based on basalt raw materials and technological additives were developed. The influence of the additives used, their quantities and the mode of thermal treatment on the crystallization processes in the experimental samples was investigated. Products with microcrystalline structure and predominant crystalline phase of augite were obtained. By applying the gas counter-pressure casting method and a set of precision casting molds, products with a variety of mechanical and physicochemical characteristics were obtained. The optimal technological conditions for the production of petrurgical materials, suitable for the making of technical equipment with application in different industries, were established experimentally.

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