Active Member
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[China]
Address: Jinan City,Shandong Province,China
Contact name:Serena
Jinan Dragon Steel Balls Co.,Ltd |
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20mm Low Chrome Low Cr Cast Iron Ball Grinding Steel Balls Grinding Media Balls
1. Product Name
Casting ball
Cast Steel Ball
Cast Balls
Cast Iron Balls
Ball Mill Balls
Grinding Balls For mining
Grinding Media balls
2. Application
Cast Iron balls are used in ball mills, mainly in mines, cement plants, power plants and so on.
3. Classification
According to the different chemical elements , Cast balls can be divided into Low Cr,Medium Cr and High Cr. At present, the above materials are widely used all over the world, that’s the conventional materials, if there are special needs, can be customized.
4. Manufacturing process,
Cast Iron balls are melted in electric furnace and poured into moulds after scientific proportioning. High chromium cast balls are also processed by oil quenching.
5. Detail Specifications
① Chemical Composition
| 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 |
② Hardness
| Type | Low Cr | Medium Cr | High Cr |
| 20mm-150mm | 45-50 | 48-55 | 58-63 |
③ Dragon Balls Weight
| Size(mm) | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
| Weight(kg) | 0.033 | 0.111 | 0.261 | 0.512 | 0.883 | 1.402 | 2.092 | 2.98 | 1.087 | 5.44 | 7.062 | 9.008 | 11.25 | 13.83 |
④ Dragon 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 |
6. Quality Control
① Factory test
Cast iron balls test is an very important step. Real-time detection will be carried out in the production process. Balls 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 steel balls.
② The third party test
According to the customer different demand, cast iron balls can be tested by any third party.
7. Packing
Cast Iron balls are usually packed in container bags and steel drums, it can also be customized according to different customer needs.
8. 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.
