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medium chromium balls
medium chromium balls
Date：2023-07-30 Views:
Medium chromium balls are also commonly used steel balls, and are mostly used in industries that do not require very high wear-resistant materials, because their chromium content is higher than that of low chromium balls, so they have higher hardness and higher wear resistance. In terms of high cost performance.
Product specifications
Φ10-150mm
Application fields
various metal mines (gold mine, copper mine, iron mine, molybdenum mine, alumina mine, lead-zinc mine), cement plant, power plant and other grinding industries.
Chemical composition
|
Name |
Type |
Chemical composition |
||||||||
|
C |
Si |
Mn |
Cr |
P |
S |
Mo |
Ni |
Cu |
||
|
medium chromium balls |
ZQCr4 |
2.1~3.5 |
0.3~1.50 |
0.3~1.5 |
4~5 |
≤0.10 |
≤0.06 |
Trace |
Trace |
Trace |
|
ZQCr5 |
2.1~3.5 |
0.3~1.50 |
0.3~1.5 |
5~6 |
≤0.10 |
≤0.06 |
Trace |
Trace |
Trace |
|
|
ZQCr6 |
2.1~3.5 |
0.3~1.50 |
0.3~1.5 |
6~7 |
≤0.10 |
≤0.06 |
Trace |
Trace |
Trace |
|
|
ZQCr7 |
2.1~3.5 |
0.3~1.50 |
0.3~1.5 |
7~8 |
≤0.10 |
≤0.06 |
Trace |
Trace |
Trace |
|
|
ZQCr8 |
2.1~3.5 |
0.3~1.50 |
0.3~1.5 |
8~9 |
≤0.10 |
≤0.06 |
Trace |
Trace |
Trace |
|
Analysis of mechanical properties and metallographic structure
|
Name |
Type |
Surface hardness（HRC） |
Impact value（AK J/c㎡） |
Metallographic structure |
Falling ball impact fatigue life（3.5M） |
|
|
medium chromium balls |
ZQCr4-ZQCr9 |
48~53 |
≥2.5 |
B+C |
≤80 |
12000 |
|
≥80 |
8000 |
|||||
|
B-Bainite,C-Carbide |
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