Jinan Huafu Forging Joint-Stock Co.,ltd.
Grinding Media Manufacturer
Add to Cart
Grinding Steel Balls 5"High Quality Forged Grinding Balls Grinding Media
Forged steel ball chemical composition
| series Element | C(%) | Si(%) | Mn(%) | Cr(%) | Cu(%) | Mo(%) | P(%) | S(%) |
| HF-A | 0.42-0.50 | 0.17-0.37 | 0.5-0.80 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| HF-B | 0.48-0.56 | 0.17-0.37 | 0.60-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| HF-C | 0.57-0.65 | 0.17-0.37 | 0.70-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| HF-D | 0.62-0.70 | 0.17-0.37 | 0.90-1.0 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| HF-E | 0.37-0.45 | 0.17-0.37 | 0.50-0.8 | 0.80-1.1 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| B-1 | 0.52-0.65 | 0.17-0.37 | 0.60-1.2 | 0-0.25 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| B-2 | 0.70-0.80 | 0.17-0.37 | 0.60-0.80 | 0.50-0.60 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
| B-3 | 0.72-0.92 | 0.17-0.37 | 0.70-1.0 | 0.50-0.90 | 0-0.25 | 0-0.30 | 0-0.035 | 0-0.035 |
Forged steel ball technical indicators
| Diameter(mm) | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 125 | 150 |
| Diameter tolerance(mm) | ±2 | +3,-2 | +4,-3 | +5,-4 | ||||||||
| Roundless(%) | 2%max | 3%max | 4%max | 5%max | ||||||||
| Series | Diameter | Surface hardness | Breakage tare | Impact value | Balls number | Microstructure |
| HF-A | 20-150MM | 45 -50HRC | 1%max | 12J/CM^2 | 8000 | M+C |
| HF-B | 20-150MM | 48-50 HRC | 1%max | 12J/CM^2 | 10000 | M+C |
| HF-C | 20-150MM | 55-60 HRC | 1%max | 15J/CM^2 | 12000 | M+C |
| HF-D | 20-150MM | 58-65 HRC | 1%max | 15J/CM^2 | 12000 | M+C |
| HF-E | 20-150MM | 48-50HRC | 1%max | 12J/CM^2 | 8000 | M+C |
| B-1 | 20-150MM | 48-50 HRC | 1%max | 12J/CM^2 | 10000 | M+C |
| B-2 | 20-150MM | 58-65 HRC | 1%max | 15J/CM^2 | 12000 | M+C |
| B-3 | 20-150MM | 60-65HRC | 1%max | 15J/CM^2 | 12000 | M+C |
Theoretical Weight
| Diameter | Theoretical weight | Diameter | Theoretical weight |
| 20mm | 32.8g | 90mm | 2988.9g |
| 25mm | 64.0625g | 100mm | 4100g |
| 30mm | 110.7g | 110mm | 5457.1g |
| 40mm | 262.4g | 120mm | 7084.8g |
| 50mm | 512.5g | 125mm | 8007.8125g |
| 60mm | 885.6g | 130mm | 9007.7g |
| 70mm | 1406.3g | 140mm | 11250.4g |
| 80mm | 2099.2g | 150mm | 13837.5g |
Production process of Forged steel ball
1) Fully automatic production line of hot rolling steel ball
Manual put material into storage rack→automatic continued feeding device→stokehole pinch roll feeding device→furnace heating→pinch roll discharging speediness discharging→enter into rolling ball machine→rolling ball quenching system→steel ball sweltering self tempering device→finished product steel ball
20mm-40mm hot rolling steel ball production line