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Grinding steel balls: can produce forged and cast steel ballФ20mm-Ф150mm ball high, medium and low chrome ...  More ...Grinding steel balls: can produce forged and cast steel ballФ20mm-Ф150mm ball high, medium and low chrome Ф17mm-Ф120mm. Huamin steel ball with a precise size, geometry roundedshapes, high hardness and good mechanical properties andresistant to wear, no distortion, no cracking of excellent quality.Products are widely used in large mines, power plants, cement plants and other industries, domestic and foreign customers
1, the overall hardness: The surface hardness of up to 55-67HRC,volume hardness 50-63HRC, and the average of the hardnessgradient. 2, impact toughness: impact toughness than 12J / cm2.3, broken rate: crush resistance is generally more than 10 times the casting and forging ball, drop ball impact times 2 million more than the actual breakage rate is not higher than 1 %. 4, no distortion: the very beginning will not be deformed steel ball, missing a round  Less ...
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