OBRABOTKAMETALLOV Vol. 23 No. 3 2021 MATERIAL SCIENCE EQUIPMENT. INSTRUMENTS 7 5 Ta b l e 1 Grinding wheels characteristics according to GOST R 52781-2007 GW No. GW dimensions D × H × d, mm Abrasive material Grit Hardness 1 600×50×305 25А F36 L 2 F46 3 F60 4 F80 5 F120 6 F60 N 7 P 8 500×63×305 S 9 600×50×305 14А L 10 64С 11 600×40×305 92А Fig. 1. Grinding wheels under study The effect of grain size variation on the elastic properties of grinding wheels No. 1, No. 2, No. 3, No. 4, and No. 5 was studied. The grain size ranged from F36 to F120 (H50 to H10 according to GOST 2424-84), with the average grain size ranging from 0.5 to 0.11 mm. Other properties remained unchanged.
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