20mm-150mm Forged Steel Ball Steel Grinding Balls Cast Iron Balls
For Mining
1. Steel Grinding balls mining size
Forged ball 20mm-150mm
Cast balls 12mm-150mm
Cylpebs 6×6-50×60
Hot Rolling Ball 20mm-40mm
2. Grinding balls is used in ball mill for mining,cement plant
,power plant and industry.
① Mining ( Gold, copper, iron ore )
② Cement plant
③ Coal mill
④ Sag mill
⑤ Industry
⑥ All the ball mill or rods mill machine
3. Dragon balls main product & Dragon balls classifications :
| Main Product | Classification |
| Cast Iron Ball | Low Cr,Medium Cr,High Cr |
| Forged Ball | C45,60Mn,B2,B3 |
| Hot Rolling Ball | C45,60Mn,B2,B3 |
| Cylpebs | Low Cr,Medium Cr,High Cr |
| Grinding Rods | C45,60Mn,B2,B3 |
| Liners | Mn13Cr2,High Chrome |
4. Grinding balls Chemical elements
Forged ball ,hot rolling balls chemical elements
| Material | Chemical Composition |
| C | Si | Mn | Cr | P | S | Ni | Cu |
| C45 |
0.42-0.5 |
0.17-0.37 |
0.5-0.8 |
≤0.25 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.25 |
| 60Mn |
0.55-0.65 |
0.17-0.37 |
0.7-1.0 |
≤0.25 |
<0.04 |
<0.04 |
≤0.3 |
≤0.25 |
| B2 |
0.72-0.85 |
0.17-0.37 |
0.7-1.0 |
0.4-0.6 |
≤0.025 |
≤0.025 |
≤0.02 |
≤0.02 |
| B3 |
0.58-0.66 |
1.3-1.9 |
0.65-0.8 |
0.7-0.9 |
≤0.025 |
≤0.025 |
≤0.02 |
≤0.02 |
Cast Ball ,Cylpebs chemical elements
| Material | C | Si | Mn | Cr | P | S |
| Low Cr | 2.2-3.4 | ≤1.2 | 0.5-1.5 | 1.0-1.5 | ≤0.06 | ≤0.06 |
| Medium Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≥5 | ≤0.06 | ≤0.06 |
| High Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≥10 | ≤0.06 | ≤0.06 |
5. Grinding balls Hardness
Forged ball ,hot rolling balls hardness
Size |
C45 |
60Mn |
B2 |
B3 |
| 20mm | 55-58 | 58-62 | 60-64 | 62-65 |
| 30mm | 55-58 | 58-62 | 60-64 | 62-65 |
| 40mm | 55-58 | 58-62 | 60-64 | 62-65 |
| 50mm | 55-58 | 58-62 | 60-64 | 62-65 |
| 60mm | 55-58 | 58-62 | 60-64 | 62-65 |
| 70mm | 53-56 | 58-62 | 60-64 | 61-63 |
| 80mm | 53-56 | 58-62 | 59-63 | 60-65 |
| 90mm | 50-55 | 58-62 | 57-61 | 60-65 |
| 100mm | 48-52 | 57-61 | 56-60 | 60-65 |
| 110mm | 48-52 | 57-61 | 55-60 | 58-64 |
| 120mm | 48-52 | 57-61 | 55-60 | 56-63 |
| 130mm | 48-52 | 57-61 | 55-60 | 56-63 |
| 140mm | 48-42 | 57-61 | 55-60 | 56-63 |
| 150mm | 48-52 | 57-61 | 55-60 | 56-63 |
Cast ball ,cylpebs hardness
| Type | Low Cr | Medium Cr | High Cr |
| 20mm-150mm | 45-50 | 48-55 | 58-63 |
6. Grinding Balls Specifications
Diameter (mm) | Diameter Tolerance (mm) | Approx Weight of per ball(kg) | Average numbers per ton |
| 20 | ＋1,－0.5 | 0.033 | 30303 |
| 30 | ＋2,－1 | 0.11 | 9090 |
| 40 | ＋2,－1 | 0.261 | 3831 |
| 50 | ＋2,－1 | 0.512 | 1961 |
| 60 | ＋2,－1 | 0.883 | 1132 |
| 70 | ＋3,－1.5 | 1.402 | 713 |
| 80 | ＋3,－1.5 | 2.092 | 478 |
| 90 | ＋3,－1.5 | 2.98 | 335 |
| 100 | ＋3,－1.5 | 1.087 | 244 |
| 110 | ＋3,－1.5 | 5.44 | 183 |
| 120 | ＋3,－1.5 | 7.062 | 141 |
7. Grinding balls Production process
Forged balls are forged by air hammer after being heated by
electric furnace.
Cast Balls and cylpebs are melted in electric furnace and poured
into moulds after scientific proportioning. High chromium balls and
cylpebs are also processed by oil quenching.
8. The difference of the forged ball and cast ball
① Different production line
② Different raw material
③ Different chemical element
④ Different core hardness and core hardness
9. How to choose the material
① According to the different customer need and usage.
② According to the ball mill size, dry grinding or wet grinding. We
can recommend you the most suitable products.
10. Quality Control
① Factory test
Grinding cylpebs test is an very important step. Real-time
detection will be carried out in the production process. Cylpebs
produced in each shift will be sampled in large quantities and
tested for size, hardness, chemical composition, drop test, core
pulling and impact value to ensure the quality of cylpebs
② The third party test
According to the customer different demand, cylpebs can be tested
by any third party.
11. Packing
Cylpebs are usually packed in container bags and steel drums, it
can also be customized according to different customer needs.
12. Company Introduction
Dragon balls factory are established in 2001.Up to now, we have
cooperated with many large power plants in China for more than 10
years. Since 2007, Dragon balls has set up its own foreign trade
team, and began to show itself to the world. The forged ball, cast
ball and cylpebs are widely praised by friends at home and abroad.
Dragon balls has a very mature technology research and development
team and sales team, we are constantly expanding the factory and
team every year, in order to meet the growing demand at home and
abroad.
Steel balls are a long-term business.
We are willing to do it all the time because if we know someone, we
will become permanent friends.
We can always do this for so many years because our quality
supports our long-term cooperation and friendship.
The quality of every steel ball is crucial because it is a strong
bridge that connects us.
