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Forged Grinding Steel Ball
Executive standard for the product is YB/T091-2005 forging(rolling)steel balls
1.Chemical Composition
|
Material |
C |
Si |
Mn |
Cr |
S |
P |
Ni |
Cu |
|
60Mn |
0.50-0.65 |
0.15-0.37 |
0.6-1.2 |
≤0.25 |
≤0.04 |
≤0.04 |
≤0.25 |
≤0.25 |
|
B2 |
0.75-0.85 |
0.17-0.35 |
0.7-1.2 |
0.4-0.8 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
|
B3 |
0.50-0.65 |
1.35-1.85 |
0.4-1.0 |
0.8-1.2 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
2. Size and hardness of the forged grinding ball
|
Diameter (mm) |
Tolerance (mm) |
Weight of single ball in average(g) |
Number of piece of one ton ball in average |
Surface hardness (HRC) |
Core hardness (HRC) |
Impact toughness (J/C㎡) |
|
Φ20 Φ25 Φ30 Φ40 Φ50 |
+2 -1 |
32 64 110 263 513 |
31250 15625 9090 3802 1949 |
60-67 |
57-62 |
≥12 |
|
Φ60 Φ70 Φ80 Φ90 Φ100 |
+3 -2 |
888 1410 2104 2996 4110 |
1126 709 475 333 243 |
58-65 |
50-56 |
|
|
Φ110 Φ120 Φ130 |
+4 -2 |
5457 7102 9030 |
182 140 110 |
55-63 |
48-55 |
|
|
Φ140 Φ150 |
+4 -3 |
11278 13871 |
88 72 |
55-63 |
45-50 |
3. Product performance: High hardness, Unbreakable, Good wear resistance, Low consumption rate.
4. Application fields: Mining, Cement Plants, Power Stations and Chemical Industries etc.
