ZHANGQIU GUDAO STEEL BALL CO., LTD
Casting Steel Ball
Classification :
Keywords: Grinding Rod,Forged&Casting Cylperbs,Forged Steel Ball,Casting Steel Ball
PRODUCT DETAILS
1. Chemical composition of cast steel balls
| name | number |
chemical composition（%） |
||||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
Ni |
P |
S |
||
| High chromium cast iron grinding ball |
ZQCr20 |
2.0～3.0 |
≤1.0 |
0.5～1.5 |
18～22 |
0～2.5 |
0～1.2 |
0～1.5 |
≤0.10 |
≤0.10 |
| High chromium cast iron grinding ball |
ZQCr15 |
2.0～3.0 |
≤1.0 |
0.5～1.5 |
12～17 |
0～3.0 |
0～1.0 |
0～1.5 |
≤0.10 |
≤0.10 |
| High chromium cast iron grinding ball |
ZQCr13 |
2.0～3.0 |
≤1.0 |
0.5～1.5 |
11～14 |
0～1.0 |
0～2.0 |
0～1.5 |
≤0.10 |
≤0.10 |
| Medium chromium cast iron grinding ball |
ZQCr7 |
2.1～3.2 |
0.5～2.2 |
0.5～1.5 |
6～10 |
0～1.0 |
0～0.8 |
0～1.5 |
≤0.10 |
≤0.10 |
| low chrome cast iron grinding ball |
ZQCr2 |
2.2～3.6 |
≤1.2 |
0.5～1.5 |
1.0～3.0 |
0～1.0 |
0～0.8 |
— |
≤0.10 |
≤0.10 |
| Bainite ductile iron grinding ball |
ZQSi3 |
3.2～3.8 |
2.0～3.5 |
2.0～3.0 |
— |
— |
— |
— |
≤0.10 |
≤0.03 |
2. Mechanical properties
|
name |
number |
Surface hardness（HRC） |
Falling ball impact fatigue life (number of times) | |
| Quench | Unquenched | |||
| High chromium cast iron steel ball |
ZQCr20 |
≥56 |
≥45 |
≥8000 |
| High chromium cast iron steel ball |
ZQCr15 |
≥56 |
≥45 |
≥8000 |
| High chromium cast iron steel ball |
ZQCr13 |
≥56 |
≥49 |
≥8000 |
| Medium chromium cast iron steel ball |
ZQCr7 |
— |
≥48 |
≥8000 |
| Low chromium cast iron steel ball |
ZQCr2 |
— |
≥45 |
≥8000 |
| Bainite ductile iron grinding ball |
ZQSi3 |
≥50 |
— |
≥8000 |
3. Cast steel ball specifications
| Project | Specifications | |||||||||||||
|
F17 |
F20 |
F25 |
F30 |
F40 |
F50 |
F60 |
F70 |
F80 |
F90 |
F100 |
F110 |
F120 |
F130 |
|
| Diameter deviation |
+1.0 -1.0 |
+2.0 -1.0 |
+3.0 -1.0 |
+3.5 -1.5 |
||||||||||
| Difference between maximum diameter and minimum diameter |
≤1.0 |
≤2.0 |
≤3.0 |
≤ |
||||||||||
4. Product performance: No deformation, no fragmentation, lower ball consumption, and uniform hardness on the surface and center of the ball.
5. Application fields: cement and building materials, mining and metallurgy, power plant coal grinding, chemical industry, machinery and other industries.
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