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Jiangyin Dongbang Steel Ball Machinery Co.,Ltd
ADD:NO.42 Hua Lu Road, Huashi Town, Jiangyin City, Jiangsu Province
Tel:86-0510-86370386
Mobile:86-13812104338
Fax:86-0510-86370552
80mm Forged Grinding Media Ball
“Dongbang” brand 80mm forged grinding media ball, your best choice for your copper ore mine mineral processing, mostly used in ball mills. Our very low breaking rate and even high hardness grinding balls support you to reduce 10-20% for your ball...
Introduction
“Dongbang” brand 80mm forged grinding media ball, your best choice for your copper ore mine mineral processing, mostly used in ball mills. Our very low breaking rate and even high hardness grinding balls support you to reduce 10-20% for your ball consumption. 
Quality performances, see below lists:
| Steel Rod Type: B2, Chemical Comments (Forged Grinding Media Ball) | |||||
C | Si | Mn | P | S | Cr |
0.76-0.82 | 0.17-0.35 | 0.72-0.80 | ≤0.020 | ≤0.015 | 0.50-0.60 |
Ni | Cu | Mo | Alt | V | |
≤0.25 | ≤0.20 | - | 0.020-0.050 | - | |
25mm-30mm Forged Grinding Media Ball Quality Performance | |||||
Ball Size | Surface Hardness | Core Hardness | Volume Hardness | ||
25mm | 63-64 HRC | 62-63 HRC | 62-64 HRC | ||
30mm | 63-64 HRC | 62-63 HRC | 62-64 HRC | ||
Steel Rod Type: B2, Chemical Comments | |||||
C | Si | Mn | P | S | Cr |
0.76-0.82 | 0.17-0.35 | 0.72-0.80 | ≤0.020 | ≤0.015 | 0.50-0.60 |
Ni | Cu | Mo | Alt | V | |
≤0.25 | ≤0.20 | - | 0.020-0.050 | - | |
40mm-50mm Forged Grinding Media Ball Quality Performance | |||||
Ball Size | Surface Hardness | Core Hardness | Volume Hardness | ||
40mm | 62-64 HRC | 61-63 HRC | 61-64 HRC | ||
50mm | 61-64 HRC | 60-63 HRC | 60-63 HRC | ||
Steel Rod Type: B4, Chemical Comments | |||||
C | Si | Mn | P | S | Cr |
0.66-0.74 | 1.2-1.4 | 0.50-0.70 | ≤0.022 | ≤0.022 | 0.85-1.0 |
Ni | Cu | Mo | Alt | V | |
- | ≤0.40 | - | 0.06-0.13 | 0.05-0.15 | |
60-70mm Forged Grinding Media Ball Quality Performance | |||||
Ball Size | Surface Hardness | Core Hardness | Volume Hardness | Impact Toughness | |
60mm | 61-63 HRC | 58-60 HRC | 59-62 HRC | ≥12 J/CM2 | |
70mm | 61-63 HRC | 58-60 HRC | 59-62 HRC | ≥14 J/CM2 | |
Steel Rod Type: B4, Chemical Comments | |||||
C | Si | Mn | P | S | Cr |
0.66-0.74 | 1.2-1.4 | 0.50-0.70 | ≤0.022 | ≤0.022 | 0.85-1.0 |
Ni | Cu | Mo | Alt | V | |
- | ≤0.40 | - | 0.06-0.13 | 0.05-0.15 | |
80-90mm Forged Grinding Media Ball Quality Performance | |||||
Ball Size | Surface Hardness | Core Hardness | Volume Hardness | Impact Toughness | |
80mm | 61-63 HRC | 58-60 HRC | 59-62 HRC | ≥16 J/CM2 | |
90mm | 61-63 HRC | 58-60 HRC | 59-62 HRC | ≥18 J/CM2 | |
Steel Rod Type: B4, Chemical Comments | |||||
C | Si | Mn | P | S | Cr |
0.66-0.74 | 1.2-1.4 | 0.50-0.70 | ≤0.022 | ≤0.022 | 0.85-1.0 |
Ni | Cu | Mo | Alt | V | |
- | ≤0.40 | - | 0.06-0.13 | 0.05-0.15 | |
100-125mm Forged Grinding Media Ball Quality Performance | |||||
Ball Size | Surface Hardness | Core Hardness | Volume Hardness | Impact Toughness | |
100mm | 60-62 HRC | 57-60 | 58-62 | ≥22 J/CM2 | |
120mm | 60-62 HRC | 57-60 | 58-62 | ≥24 J/CM2 | |
125mm | 60-62 HRC | 57-60 | 57-61 | ≥24 J/CM2 | |
