China skew rolling mill,skew rolling machine,Steel Ball
Skew rolling mill can produce steel ball diameter from 15 mm to 150 mm . Advantage of skew rolling mill. 1. Forged grinding ball has high hardness: surface hardness to 5865HRC, volume hardness of 5764HRC. 2. Impact toughness high: impact toughness more than 12J35J / cm2. 3. Broken rate is low: the actual broken rate is not higher than %. 4. Loss of forged grinding ball round rate is low