Polybasic Alloyed Grinding Ball Chemical Composition
|
Kind
|
Chemical Composition (%)
|
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
Cu
|
Ni
|
Nb
|
Ti
|
Zr
|
V
|
B
|
P
|
S
|
|
PolybasicⅠ
|
1.8-3.2
|
0.5-1.5
|
0.4-1.5
|
3.5-8
|
≤0.5
|
≤0.8
|
≤0.5
|
≤0.2
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.1
|
≤0.10
|
≤0.10
|
|
PolybasicⅡ
|
1.8-3.2
|
0.5-1.5
|
0.1-0.8
|
8-11
|
≤0.5
|
≤0.5
|
≤0.5
|
≤0.2
|
≤0.5
|
-
|
-
|
≤0.1
|
≤0.1
|
≤0.10
|
Machanics Properties and Microstructure
|
Kind
|
Hardness(HRC)
|
Impact Value ak(j/cm2)
|
Microstructure
|
Time of Falling Balls
|
|
PolybasicⅠ
|
48-56
|
≥2.0
|
P+C
|
＜Φ80
|
≥13000
|
|
≥Φ80
|
≥16000
|
|
PolybasicⅡ
|
58-64
|
≥3.5
|
M+C
|
＜Φ80
|
≥15000
|
|
≥Φ80
|
≥8000
|
Specification and Avoirdupois
|
Ball Diameter(mm)
|
Weight of Each Ball(kg)
|
Pcs/ton
|
|
Φ20
|
0.0322
|
31056
|
|
Φ25
|
0.063
|
15873
|
|
Φ30
|
0.11
|
9091
|
|
Φ40
|
0.257
|
3891
|
|
Φ50
|
0.50
|
2000
|
|
Φ60
|
0.867
|
1153
|
|
Φ70
|
1.37
|
729
|
|
Φ80
|
2.05
|
487
|
|
Φ90
|
2.9
|
345
|
|
Φ100
|
4.00
|
250
|
|
Φ110
|
5.3
|
188
|
|
Φ120
|
6.80
|
147
|
|
Φ125
|
7.75
|
129
|
|
Φ130
|
8.74
|
114
|
|
Φ150
|
13.5
|
74
|
Capsule Ball Chemical Composition (%)
| C |
Si |
Mn |
Cr |
Mo |
Cu |
S |
P |
| 1.8-3.2 |
0.5-1.5 |
0.4-1.5 |
0.8-3.5 |
0-0.6 |
0-0.6 |
＜0.15 |
＜0.15 |
Mechanical Properties of Products
|
Microstructure
|
Impact Value ak(j/cm2)
|
Hardness (HRC)
|
|
P+C
|
＞1.5
|
45-50
|
|
P-Pearlite C-Carbide
|
Specifcation Weight
| Specifcation |
Weight of Each Ball(kg) |
Specifcation |
Weight of Each Ball(kg) |
| Φ30×60×39×16 |
0.28 |
Φ64×128×89×36 |
2.5 |
| Φ34×68×51×16 |
0.46 |
Φ72×144×99×44 |
3.95 |
| Φ42×84×63×26 |
0.75 |
Φ79×158×109×44 |
5.22 |
| Φ48×96×72×30 |
1.25 |
Φ86×172×119×48 |
6.75 |
| Φ57×114×83×34 |
2.0 |
Φ90×125×90×47 |
5.1 |
|
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