Topography of the Surface and Subsurface Layers of Grinding Balls ...
WEBMay 24, 2021 · The surface hardness of the balls belonging to both batches corresponds to HRC 50–52 inherent in the 2nd group of hardness according to GOST (State Standard) 7524–2015 "Grinding steel balls for ball mills. Engineering specifiions". In the macrostructure of the balls, a homogeneously arranged quenched layer is distinctly .