STUDY OF MICROSTRUCTURAL CHARACTERISTICS OF GRINDING BALLS MADE FROM HIGH-QUALITY CAST IRON IN DIFFERENT ZONES

This article presents a comprehensive analysis of the industrial relevance and manufacturing processes of grinding balls produced from high-quality cast iron. Owing to its superior mechanical characteristics, high density, hardness, and cost-effectiveness, cast iron has long been a material of choice across multiple industrial sectors. In particular, its application in the production of grinding balls is driven by its excellent wear resistance and durability under high-pressure and high-friction operating conditions. Surface-hardened cast irons are extensively utilized for manufacturing crushing and grinding components in mineral processing industries. Beyond these applications, grinding balls made from high-quality surface-hardened cast irons demonstrate outstanding mechanical performance in equipment such as spreader shafts, sand handling machinery, and refractory material workshops. The study first explores the chemical composition and physical properties of cast iron, highlighting how carbon content and the incorporation of alloying elements influence hardness, toughness, and operational suitability. Enhancements to the cast iron matrix, through the addition of chromium, molybdenum, and other alloying elements, further improve resistance to wear and corrosion. The production process encompasses casting molten iron into molds followed by detailed microstructural analysis and optimization of the grinding balls. The technological parameters at each stage play a crucial role in determining the final mechanical properties, wear resistance, and overall service life of the products. Keywords: cast iron, grinding balls, microstructure, surface hardening, wear resistance, mechanical properties, industrial applications.