What the skew rolling mill advantage
What the skew rolling mill advantage:
![ball rolling mill](http://www.skewrollingmill.com/wp-content/uploads/2015/04/Ball-rolling-mill.jpg)
ball rolling mill
1. Hot skew forged grinding ball has high hardness: surface hardness to 58-65HRC, volume hardness of 57-64HRC
![grinding steel ball](http://www.skewrollingmill.com/wp-content/uploads/2017/07/grind-steel-ball.jpg)
grinding steel ball
2. Impact toughness high: impact toughness more than 12J-35J / cm2.
3. Broken rate is low: the actual broken rate is not higher than 0.5%.
4. Loss of forged grinding ball round rate is low.
5. Dropping test in 8m high tester for more than 20,000 times.