Products Specification
1) Chromium Grinding Balls
Chemical composition
|
type |
chemical composition(%) |
|||||||
|
C |
Si |
Mn |
Cr |
Mo |
Cu |
P |
S |
|
|
Low-Cr casting Ball |
1.8-2.5 |
≤1.2 |
≤1.5 |
1 - 3 |
≤1.0 |
≤0.5 |
≤0.15 |
≤0.15 |
|
Medium-Cr casting Ball |
1.8-2.5 |
≤1.2 |
≤1.8 |
4 - 9 |
≤1.5 |
≤1.0 |
≤0.15 |
≤0.15 |
|
High-Cr Casting Ball |
1.8-2.5 |
≤1.0 |
≤2.5 |
10-18 |
≤1.0 |
≤1.5 |
≤0.10 |
≤0.10 |
|
Super high-Cr Casting Ball |
1.8-2.5 |
≤1.0 |
≤2.5 |
22-25 |
＜2.0 |
≤1.5 |
≤0.10 |
≤0.10 |
Mechanical Properties and Micro Structure
|
type |
Mechanical properties |
Micro structure |
|
|
HRC |
Falling ball numbers |
||
|
Low-Cr casting Ball |
≥45 |
≥8000 |
P＋C |
|
Medium-Cr casting Ball |
≥50 |
≥12000 |
P＋C |
|
High-Cr Casting Ball |
≥58 |
≥15000 |
M＋C |
|
Super high-Cr Casting Ball |
≥60 |
≥22000 |
M＋C |
|
Note: C-carbide, M-martensite, P-pearlite |
|||
Product specification and weight
|
Sphere diameter(mm) |
weight(kg)/piece |
Number per ton(pcs) |
|
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 |
2.90 |
345 |
|
Φ100 |
4.00 |
250 |
|
Φ110 |
5.30 |
188 |
|
Φ120 |
6.80 |
147 |
|
Φ125 |
7.75 |
129 |
|
Φ130 |
8.74 |
114 |
Processing Technique
Medium frequency furnaces melting high-quality steel scrap and chromium alloy etc.
Constant temperature casting process ensuring the quality, no sonim, no pore, no collapse etc.
Oil-immersed heat treatment and annealing process changing the internal organizational structure,lowering the damage percentage, and improving the performance.
Matter test, After the furnace test, semi-finished products and end products inspection was done by advanced spectrometer and durometer .
Industries:
It is widely used in cement building materials, metal mines, and other industries for powder preparation and superfine processing.