Materials on and the results of testing new types of equipment for producing grinding balls of high surface hardness and normalized volume hardness are presented. The EVRAZ NTMK company has implemented a technology of producing grinding balls of high strength, including of hardness group 5 (high surface hardness and normalized volume hardness), according to GOST 7524–2015. For this purpose, a set of equipment for producing grinding balls and testing them for impact resistance was put into operation. Meeting the requirements allows achieving high service characteristics of grinding balls.

中文翻译：

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生产高表面和标准化体积硬度的磨球

介绍了生产高表面硬度和标准化体积硬度磨球的新型设备的材料和试验结果。根据 GOST 7524–2015，EVRAZ NTMK 公司实施了一种生产高强度磨球的技术，包括硬度组 5（高表面硬度和标准化体积硬度）。为此，一套用于生产研磨球并测试它们的抗冲击性的设备投入使用。满足要求可以实现磨球的高使用特性。