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Casting Ball
Product Details:
Product
Quality Standard
1.The chemical composition of the high chromium type product
should conform to the below table. We can also manufacture the product with
special chemical composition in accordance with the requirements of the
customers.
|
Code |
Chemical Composition (Mass Fraction) |
|||||||||
|
Cr |
C |
Si |
Mn |
Mo |
Cu |
V |
Ti |
P |
S |
|
|
ZQCrG1 |
10-16 |
2.0-3.5 |
≤1.0 |
0.5-2.5 |
≤1.0 |
≤1.0 |
≤0.3 |
≤0.15 |
≤0.1 |
≤0.1 |
|
ZQCrG2 |
16-22 |
|||||||||
|
ZQCrG3 |
22-28 |
|||||||||
2.The nominal diameter, allowable deviation, maximum diameter,
minimum diameter of the cast grinding steel ball should be in accordance with
the following table.
|
Nominal Diameter |
20 |
25 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
|
Allowable Deviation of Diameter |
+2.0-1.0 |
+2.0-1.0 |
+3.5-1.0 |
|||||||
|
Difference between the Maximum Diameter and Minimum
Diameter |
≤1.8 |
≤2.4 |
≤3.0 |
≤3.6 |
≤4.2 |
≤4.6 |
||||
3.The high chromium type of product can be manufactured with
the mechanical properties following the requirements of customers.
|
Code |
Surface Hardness(HRC) |
Impact Test(Ak) |
Impact Fatigue life(Times) |
|
ZQCrG1 |
≥58 |
≥3 |
≥10000 |
|
ZQCrG2 |
|||
|
ZQCrG3 |
Surface Quality
The surface of the cast
iron grinding ball is not allowed to have the casting defects such as the
crack, and the obvious gas porosity, inclusion, shrinking cavity, cold shut,
elephant skin, etc.
Internal Quality
It is not allowed to have
the shrinkage cavity, shrinking porosity, gas porosity, inclusion, and other
cavity defects on the section including plane pasting through the pouring gate
and the ball center.
Testing
Method and Inspection Rules
1. Impact Test
2. Rockwell Hardness Test
Specimen Preparation
3. Chemical Composition
Inspection
4. Surface Hardness
Inspection
5. Internal Quality
Inspection
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Casting Ball
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Grinding Cylpebs
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