Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd
Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd 18 Years focus on development and production of grinding media Casting quality with strength, Forging glory with integrity
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1.Feature:
1) High Hardness: surface hardness of ball mill grinding meda ball is to 58-68 HRC and volume hardness is to 55-63 HRC;
2) High Impact Toughness: impact toughness is more than 12 J/cm2;
3) Low Broken Rate: the actual broken rate is not higher than 1%;
4) Even Wear-resistance: the loss of ball round rate is 50-300g/ton.
2.Chemical Composition of Forged Grinding Ball
Based on material, forged steel balls are defined into 7 brands. And The chemical composition is shown in the following:
| Brand | Material | C | Mn | Si | Cr | S | P |
| TITLE-1 | 50MN | 0.48-0.56 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| TITLE-2 | 60MN | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.030 | ≤0.030 |
| TITLE-3 | 65MN | 0.60-0.70 | 0.90-1.20 | 0.17-0.37 | ≤0.25 | ≤0.030 | ≤0.030 |
| TITLE-4 | 75Mn | 0.72-0.92 | 0.90-1.20 | 0.17-0.37 | ≤0.25 | ≤0.030 | ≤0.030 |
| TITLE-5 | 75MnCr(B2) | 0.70-0.85 | 0.70-1.20 | 0.17-0.37 | 0.42-0.85 | ≤0.030 | ≤0.030 |
| TITLE-6 | 75SiMn | 0.70-0.90 | 0.70-1.20 | 0.4-0.8 | ≤0.25 | ≤0.030 | ≤0.030 |
| TITLE-7 | B3 | 0.5-0.65 | 0.4-1.0 | 1.4-1.8 | 0.9-1.2 | ≤0.030 | ≤0.030 |
3.Chemical Composition of Casting Grinding Ball
Based on material, cast steel balls are defined into 6 brands. And The chemical composition is shown in the following:
| Model | Material | C | Si | Mn | Cr | S | P |
| High Chrome | Cr-22-32% | 2.0-2.8 | ≤1.0 | 0.5-2.0 | 22-32 | ≤0.01 | ≤0.01 |
| Cr-17-22% | 2.0-2.8 | ≤1.0 | 0.5-2.0 | 17-22 | ≤0.01 | ≤0.01 | |
| Cr-14-17% | 2.2-3.0 | ≤1.0 | 0.5-2.0 | 15-17 | ≤0.01 | ≤0.01 | |
| Cr-10-14% | 2.2-3.2 | ≤1.0 | 0.5-2.5 | 10-14 | ≤0.01 | ≤0.01 | |
| Medium Chrome | Cr-5-9% | 2.1-3.2 | ≤1.2 | 0.5-1.5 | 5-9 | ≤0.01 | ≤0.01 |
| Low Chrome | Cr-1-4% | 2.2-3.5 | ≤1.2 | 0.5-1.5 | 1-4 | ≤0.02 | ≤0.02 |
4.Specification of Grinding Ball
5.Specification of Casting Grinding Ball
1)High chrome cast balls
Size: 20mm-150mm
Hardness:HRC58-65; Chrome content:11-14%
2)Low chrome cast balls
Size: 20mm-150mm
Hardness:HRC45-55; Chrome content:1-5%
Grinding Media Balls Package ( Container bags and steel drums are two common used package all over the world,let me know which one you want.)