Jinan Dragon Steel Balls Co.,Ltd
Jinan Dragon Steel Balls Co.,Ltd 19 Years Grinding Media Balls Professional Manufacturer
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Good Wear Resistant Grinding Balls Casting Steel Ball High Chrome Balls
Dragon balls have more than 19 years production experience, casting steel balls are our most copetition product, no matter the quality, ourput,and the price, happy to recieved youe messages.
1. Dragon balls main product as folloing:
2. Cast iron 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 |
3. Cast iron balls characteristics and advantages
① Size 12mm-150mm
② 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 |
③ Hardness
| Type | Low Cr | Medium Cr | High Cr |
| 20mm-150mm | 45-50 | 48-55 | 58-63 |
④ Advantages
High hardness
Good wear resistant
Low Breakage
4. Cast iron balls Production process
High Chrome Balls are melted in electric furnace and poured into moulds after scientific proportioning. High chromium cast balls are also processed by oil quenching.
Cast iron balls
Cast iron balls