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Help CenterTop Quality 25mm Steel Ball Grinding Mining
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Specifications
1:High hardness wear resistance,Low breakage2:HRC45-67
3:Diameter 20-150mm
4:Certification:ISO9001
5:Used to Ball mill
Top Quality 25mm Steel Ball Grinding Mining
1.Applied Field:
1).Cement Plants,
2).Mines,
3).Power stations,
4).Chemical Industries,
5).Grinding Mill, Ball mill, Coal mill.
2. Chemical composition
Based on material,the forged steel balls are defined into 7 brands. And The chemical composition is shown in the following:
Brand |
Material |
C |
Mn |
Si |
Cr |
S |
P |
V |
Special-1 |
50MN |
0.48-0.56 |
0.70-1.0 |
0.17-0.37 |
≤0.25 |
≤0.035 |
≤0.035 |
|
Special-2 |
60MN |
0.57-0.65 |
0.70-1.0 |
0.17-0.37 |
≤0.25 |
≤0.035 |
≤0.035 |
|
Special-3 |
65MN |
0.60-0.70 |
0.90-1.20 |
0.17-0.37 |
≤0.25 |
≤0.035 |
≤0.035 |
|
Special-4 |
75Mn |
0.72-0.92 |
0.17-0.37 |
0.17-0.37 |
0.4-0.6 |
≤0.035 |
≤0.035 |
|
Special-5 |
75MnCr |
0.70-0.85 |
0.7-0.8 |
0.17-0.37 |
0.2-0.7 |
≤0.03 |
≤0.03 |
|
Special-6 |
75SiMn |
0.70-0.90 |
0.7-1.2 |
0.4-0.8 |
≤0.25 |
≤0.03 |
≤0.03 |
|
Special-7 |
Wear-resistant Alloy |
0.5-0.65 |
0.4-1.0 |
1.4-1.8 |
0.9-1.2 |
≤0.03 |
≤0.03 |
0.1-0.2 |
3.Hardness of Forged 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.Main Process of Forged Steel Ball
.(1).Raw material
(2).Cutting
(3).Heating
(4).Forging
(5).Quenching
(6).Tempering
(7).Testing
(8).Qualified Products
(9).Packing
5.Packing
1) steel drums
2) flexible container bags
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