The company “Energosteel” has produced grinding balls 30 mm (volume – 150 tons) of high carbon alloy steel in early October 2016. This party of grinding balls showed higher hardness values throughout cross section of the ball with a surface hardness 65-66HRC and volumetric hardness – 64-65 HRC.
According to an old national quality standard for steel grinding balls (3499-97) and to a new national quality standard for steel grinding balls (DSTU 8538: 2015) these products comply with the fifth group of hardness.
Grinding balls have been successfully tested for the impact resistance. Thirty balls have been selected from a batch for the experiment. Each selected ball sustained the total impact energy of 64 312 J without destruction.
This party of steel grinding balls for ball mill will be shipped in the nearest future to the Middle East market.