The feasibility of manufacturing high-chromium grinding media domestically.

The possibilities of manufacturing grinding media of high-chromium cast iron at the foundry of OOO Metallurg-project are discussed. According to the process, jointly developed by the engineers of the company and the Department of general metallurgy of the South Ural State University, an experimental batch of grinding balls of 60-mm diameter was manufactured. The hardness of the ball material was in the range of HRC 60.5-64.5. No porosity, blowholes or cracks on the surface of the balls when cut were found. According to the results of the initial tests, the balls are highly resistant to cyclic shocks.

Author: M.A. Porsev, I.V. Chumanov

Section: Equipment and technology

Keywords: grinding bodies, grinding balls, castings, high-chromium iron, hardness.