WEBJul 20, 2016 · The grinding balls were to be made on a ballrolling mill (ShPS 30–80) from a continuouscast carbon steel semifinished product (Fig. 1) with a (120 × 120)–(150 × 150)mm cross section. The steel conforms to hardness classes III and IV in the standards GOST 7524–89 and DSTU 3499–97 [ 2 ].
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WhatsApp: +86 18203695377WEBJul 25, 2017 · The grinding steel balls are uniformly spherical in shape and no appreciable variation between any two balls of same size. 3. The grinding steel balls must comply to standard required alloy steel composition. 4. Surface smoothness and free from defects such as pits, soft sports, cuts, laps and out of round. 5.
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