75mm forged mill balls ,are euqal to 3 Inch forged mill balls .
Featurers :
1) High Hardness: Surface hardness of Forged Steel Ball is to 60-68 HRC and volume hardness of Forged Grinding Ball is to 60-65 HRC;
2) High Impact Toughness: The impact toughness is more than 15 J/cm2;
3) Low Broken Rate: The actual broken rate is not higher than 1%;
4) Even Wear-resistance: The wear rate of Cast Ball is 50-700 g/ton.
1.Chemical composition of forged mill balls or rolling mill balls
| Material | C | Si | Mn | Cr | P | S |
| 45# | 0.42-0.48 | 0.17-0.37 | 0.50-0.80 | ≤0.15 | ≤0.050 | ≤0.035 |
| 60Mn | 0.57-0.65 | 0.17-0.37 | 0.70-1.10 | ≤0.25 | ≤0.050 | ≤0.035 |
| 65Mn | 0.62-0.75 | 0.17-0.37 | 0.90-1.20 | ≤0.25 | ≤0.050 | ≤0.035 |
| B2 | 0.75-0.85 | 0.17-0.35 | 0.70-0.90 | 0.40-0.60 | ≤0.050 | ≤0.035 |
| B3 | 0.50-0.65 | 1.35-1.85 | 0.40-1.0 | 0.80-1.20 | ≤0.050 | ≤0.035 |
| B4 | 0.58-0.66 | 1.60-1.90 | 0.65-0.80 | 0.70-0.90 | ≤0.03 | ≤0.03 |
| B6 | 0.97-1.03 | 0.20-0.30 | 1.00-1.10 | 0.50-0.60 | ≤0.025 | ≤0.025 |
2. Hardness of forged mill balls or rolling Mill Ball
|
Size | Size | Tolerance(mm) | Material | Surface hardness (HRC) | Volume hardness (HRC) |
| 3/4" | D20MM | 0.037+/-0.005 | 2+/-1 | B2 | 63-66 |
| 1" | D25MM | 0.072+/-0.01 | 2+/-1 | B2 | 63-66 |
| 11/4" | D30MM | 0.13+/-0.02 | 2+/-1 | B2 | 63-66 |
| 11/2" | D40MM | 0.30+/-0.04 | 2+/-1 | B2 | 62-66 |
| 2" | D50MM | 0.6+/-0.05 | 2+/-1 | B2 | 62-65 |
| 21/2" | D60MM | 1.0+/-0.05 | 2+/-1.5 | B2 | 62-65 |
| 21/2" | D65MM | 1.3+/-0.05 | 2+/-1.5 | B2 | 61-64 |
| 21/2" | D65MM | 1.3+/-0.05 | 2+/-1.5 | B3 | 61-63 |
| 3" | D75MM | 2.0+/-0.06 | 3+/-2 | B3 | 61-63 |
| 3"(Hot rolled) | D80MM | 2.0+/-0.06 | 3+/-2 | B3 | 60-63 |
| 3"(Forged) | D80MM | 2.1+/-0.06 | 3+/-2 | B3 | 60-62 |
| 31/2" | D90MM | 3.0+/-0.07 | 3+/-2 | B3 | 60-63 |
| 4" | D100MM | 4.1+/-0.15 | 3+/-2 | B3 | 60-63 |
| 4.5" | D115MM | 6.3+/-0.15 | 3+/-2 | B3 | 60-63 |
| 5" | D125MM | 8.1+/-0.3 | 3+/-2 | B3 | 59-62 |
- FEATURE OF OUR FORGED MILL BALLS
Jinan Zhongwei forged mill balls / rolling mill balls are manufactured from selected high carbon alloy steel bars and manually forged by air hammer.
Jinan Zhongwei forged mill balls/ rolling mill balls have good density and strength in favour of impact grinding and rapidly managed forging process ensuring spherical ball shape .
Jinan Zhongwei forged mill balls /rolling mill balls followed by in-line water heat treatment ,and uniform quenching,tailored to even hardness throughout .
Jinan Zhongwei forged mill balls / rolling mill balls avaliable in size 20mm to 150mm with various specifications,meet an equally wide range of grinding and milling need.
- PACKING AND DELIVERY OF OUR FORGED MILL BALLS
Seaworthy standard packaging: Container bags or steel drums or with wooden or non-wooden pallets (At buyer's option)
Delivery: By Sea transportation, in container or bulk vessel.
Port of loading: Qingdao Port,China
FOR MORE INFORMATION ABOUT JINAN ZHONGWEI FORGED MILL BALLS ,WELCOME TO CONTACT US.
WE WILL SEND OUR MOST COMPETITIVE OFFER IMMEDIATELY UPON RECEIPT OF YOUR INQUIRY.
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Steel Balls for Mining are quality guaranteed. We are China Origin Factory of 75mm Forged Mill Balls. If you have any question, please feel free to contact us.
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