Forged Steel Grinding Balls 911Metallurgist
forged steel grinding ball has high hardness: surface hardness to 58-65HRC, volume hardness of 57-64HRC; impact toughness high: impact toughness more than 12J / cm2. broken rate is low: the actual broken rate is not higher than 0.5%. loss of forged grinding ball round rate is low. dropping test in 8m high tester for more than 20,000 times.