Specifications

1.Top grade raw material
2.hardness:58-67HRC
3.low breakage :real0.1%
4.Top wear resistance
5.high impact value

 

 

 

Ball Mill Forging Steel Grinding Ball 

 

 

1. Chemical composition

 

Based on material,the forged steel balls are defined into 7 brands. And The chemical composition is shown in the following:

 

 

 

2.Applied Field:

  

1).Cement Plants,

 

2).Mines,

 

3).Power stations,

 

4).Chemical Industries,

 

5).Grinding Mill, Ball mill, Coal mill.

 

 

3.Hardness of Grinding Steel Ball (HRC)

 

According to the theory and tests, the hardness of forged steel ball is shown in the following:

 

Brand	Material	Impact Test AK.J/cm2	Endurance Test Times(5m)	Dia 25mm-60mm		Dia 70mm-100mm
				Surface	Core	Surface	Core
Special-1	50MN	≥12	≥10000	≥56	≥48	≥56	≥40
Special-2	60MN	≥13	≥10000	≥58	≥50	≥58	≥42
Special-3	65MN	≥15	≥12000	≥60	≥50	≥60	≥42
Special-5	75MnCr	≥17	≥12000	≥60	≥52	≥60	≥50
Special-6	75SiMn	≥16	≥12000	≥60	≥50	≥60	≥48
Special-7	Wear-resistant Alloy	≥17	≥12000	≥60	≥54	≥60	≥52

 

 

4. Feature:

 

1)  In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC

 

2) impact toughness high: impact toughness more than 12 J / cm2.

 

3) broken rate is low: the actual broken rate is not higher than 1%.

 

4) loss of grinding forged steel ball round rate is low.

 

 

5.Packing

 

1) steel drums

 

2) flexible container bags