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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High chrome Dia 20-150mm casting iron ball from China for cement plant
a) unbreakable
b) grinding resistant
c) high impact value
d) high combined efficiency of grinding mill
Forged Grinding Steel Balls
1) In general, forged steel ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 50-63 HRC
2) Impact toughness high: impact toughness more than 12 J / cm2.
3) Broken rate is low: the actual broken rate is not higher than 1%.
4) Loss of grinding forged steel ball round rate is low.
National Standards
| Specification | 20 | 25 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 |
| Chemical composition | C | Si | Mn | P | S | Cr | Ni | Cu | V | Ti | |||||
| 0.72- 0.95 | 0.50- 0.75 | 0.90 -1.20 | ≤0.035 | ≤0.035 | ≤0.25 | ≤ 0.30 | ≤ 0.25 | ≤ 0.01 | ≤ 0.01 | ||||||
| Surface hardness | 55-64 | 54-62 | 50-60 | 50-58 | |||||||||||
| Hardness of heart | ≥50 | ≥50 | ≥48 | ≥46 | |||||||||||
Company measured test results
| Chemical Composition | C | Si | Mn | S | P | Cr |
| 0.72-0.82 | 0.17-0.37 | 0.7-0.8 | ≤0.035 | ≤0.035 | 0.28-0.6 |
| Specification | Surface Hardness | Hardness | Company measured | Remark | ||
| Surface Hardness | Hardness | |||||
| 1 | 40 | 60-65 | 59-64 | National Standards High carbon low alloy steel forging (rolling) surface hardness Hardness of Heart≥50; >90mm: surface hardness Hardness of Heart≥48. | ||
| 2 | 50 | 60-65 | 58-63 | 64.5 | 63 | |
| 3 | 60 | 60-65 | 58-63 | 66 | 64-65 | |
| 4 | 70 | 60-65 | 58-63 | |||
| 5 | 75 | 60-65 | 58-63 | |||
| 6 | 80 | 58-63 | 56-61 | 66 | 64 | |
| 7 | 90 | 58-63 | 56-61 | 63 | 61 | |
| 8 | 100 | 58-63 | 56-61 | 62 | 60 | |
| 9 | 110 | 57-62 | 52-57 | 63.5 | 59 | |
| 10 | 120 | 57-62 | 50-55 | 61.5 | 54 | |
| 11 | 130 | 56-61 | 42-47 | 62 | 49.5 | |
| 12 | 140 | 56-61 | 40-45 | |||
Cast Iron Balls Application( Please let me know your application, Jinan zhongwei will recommend the most high cost-effective type)
Competitive advantage:
1.Top high cost performance;
2.Save annual steel ball use qty;
3. Increase outlet derived from the best quality .
Performance comparation:
Cast Iron Balls Production ( Jinan zhongwei accept any form of the thrid-party testing)
Cast Iron Balls Package ( Container bags and steel drums are two common used package all over the world,let me know which one you want.)