Brife of our company:
We Jinan Zhongwei casting and forging grinding ball Co.,Ltd, are leading manufacturer and professional exporter of grinding media balls in China.
Our main products are forging grinding steel balls,and (high,low,medium) chrome alloyed casting iron balls,casting cylpebs,grinding rods.Relying on the advanced equipment and production technology,our grinding balls have the advantages of high hardness,good wear resistance, no breakage and even wearing.They are mainly applied to various mines,cement plants,power stations and chemical industries.
| Material | C | Mn | Si | Cr | S | P |
| 50Mn | 0.48-0.56 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 60Mn | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 65Mn | 0.60-0.70 | 0.90-1.2 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| B2 | 0.70-0.85 | 0.70-0.80 | 0.17-0.37 | 0.2-0.7 | ≤0.03 | ≤0.03 |
| 75SiMn | 0.70-0.90 | 0.70-1.20 | 0.4-0.8 | ≤0.25 | ≤0.03 | ≤0.03 |
| Wear-resistant Alloy | 0.50-0.65 | 0.4-1.0 | 1.4-1.8 | 0.9-1.2 | ≤0.03 | ≤0.03 |
2> Cast Grinding Ball
|
Material
|
C
|
Si
|
Cr
|
Mn
|
S
|
P
|
|
Cr-22-32%
|
2.0-2.8
|
≤1.0
|
22-32
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-17-22%
|
2.0-2.8
|
≤1.0
|
17-22
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-15-17%
|
2.2-3.0
|
≤1.0
|
15-17
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-11-14%
|
2.2-3.2
|
≤1.0
|
11-14
|
0.5-2.5
|
≤0.06
|
≤0.08
|
|
Cr-5-10%
|
2.1-3.2
|
≤1.2
|
5-10
|
0.5-1.5
|
≤0.06
|
≤0.08
|
|
Cr-1.5-3.%
|
2.2-3.5
|
≤1.2
|
1.5-3.0
|
0.5-1.5
|
≤0.06
|
≤0.08
|
Physical Property
1> Forged Grinding Ball
| Material | Impact Test(Ak.J/cm²) | Endurance Test Times(5m/T) |
Surface Hardness
(Φ25mm- Φ60mm)
|
Core Hardness
(Φ25mm- Φ60mm)
|
Surface Hardness
(Φ70mm- Φ100mm)
|
Core Hardness
(Φ70mm- Φ100mm)
|
Breakage |
| 50Mn | ≥12 | ≥10000 | ≥56 | ≥35 | ≥56 | ≥28 | <1% |
| 60Mn | ≥13 | ≥10000 | ≥58 | ≥38 | ≥58 | ≥29 | <1% |
| 65Mn | ≥15 | ≥12000 | ≥60 | ≥42 | ≥60 | ≥30 | <1% |
| B2 | ≥17 | ≥12000 | ≥60 | ≥52 | ≥60 | ≥50 | <1% |
| 75SiMn | ≥16 | ≥12000 | ≥60 | ≥50 | ≥60 | ≥48 | <1% |
| Wear-resistant Alloy | ≥17 | ≥12000 | ≥60 | ≥54 | ≥60 | ≥52 | <1% |
2> Cast Grinding Ball
|
Material
|
Impact
Test
Ak.J/cm
|
Endurance
Test times
(5m)
|
Hardness (HRC)
|
|||
|
Diam25-60mm
|
Diam70-100mm
|
|||||
|
Quenching
|
Unquenching
|
Quenching
|
Unquench
ing
|
|||
|
Cr-22-32%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥60
|
≥48
|
|
Cr-17-22%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥60
|
≥48
|
|
Cr-15-17%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥58
|
≥48
|
|
Cr-11-14%
|
≥3
|
≥10000
|
≥58
|
≥49
|
≥56
|
≥48
|
|
Cr-5-10%
|
≥3
|
≥8000
|
-
|
≥48
|
-
|
≥48
|
|
Cr-1.5-3.%
|
≥2
|
≥8000
|
-
|
≥48
|
-
|
≥45
|
Heated by electric stove ,the top grade raw material .10 years'experience,direct manufacturer low price
Packaging
Ton bags (1000Kg Per Bag)
Iron drums (850~920Kg Per Drum)