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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Mineral used forged steel balls B2 B3 60mn material HRC 55-65
Our Advantages
1.Jinan Zhongwei has 16 years production experience and complete purchasing ,testing,service system ,
2.We keep continuous adjustment and improvement according to the customer’s requirement at the last 10 years.
3.On the basis of satisfied customer’s 50,000 tons demand, Jinan Zhongwei has more 30,000 tons to 50,000 tons production capacity for the new cooperative partner.
4.Stable price system - 12 months price validity
5.Payment terms ( Negotiate)
Grinding Media Balls Chemical Elements( Below is common used type all over the world,if you have any other different requirement, please let me know,we can order from steel mill)
| Material | Chemical Elements | ||||
| C | Si | Mn | P/S | Cr | |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | <0.25 |
| 60MN | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.25 |
| B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.04 | 0.4-0.6 |
| B3 | 0.58-0.66 | 1.6-1.9 | 0.65-0.8 | <0.025 | 0.7-0.9 |
Grinding Media Balls Hardness( Below is common used type all over the world,if you have any other different requirement, please let me know,we can order from steel mill)
| Material | 25mm-50mm HRC | 60mm-90mm HRC |
100mm-125mm HRC
| |||
| 50-55 | ||||||
| 45# | 55-58 | 55-58 | ||||
| 60MN | 58-63 | 58-63 | 56-60 | |||
| B2 | 60-65 | 58-63 | 56-60 | |||
| B3 | 56-63 | |||||
All the raw material-steel rods are produced by reputable large scale steel mills. We can also arrange
special processing for different requirements of the steel raw material . We use an electric furnace
to heat the raw material, in order to make sure all the materials can reach the correct temperature
and reduce unnecessary loss during heating .
To obtain high hardness,strength,toughness and superior wear resistance ,the forged steel balls
undergo heat treatment, water quenching, and tempering.
During the heat treatment, we use advanced Isothermal temperature control technology, to insure
the uniformity of the hardness of the grinding balls .
Characteristics and Advantages
Properties contrast with other type grinding balls:
| Description | Properties | Metallographic Structure | Falling- ball Impact Fatigue Life | ||
| Superficial Hardness (HRC) | Ak (j/cm2) | ||||
| Grinding Ball | ≥60 | ≥7 | B+A+Carbide | ≤Φ100 | ≥18000 |
| ≥Φ100 | ≥15000 | ||||
| Low-Cr Ball | ≥45 | ≥2.5 | P+Carbide | >5000 | |
| Medium-Cr Ball | ≥47 | ≥2.5 | P+Carbide | <Φ80 | ≥13000 |
| ≥Φ80 | ≥6000 | ||||
| High-Cr Ball | ≥55 | ≥2.5 | M+Carbide | <Φ80 | ≥15000 |
| ≥Φ80 | ≥10000 | ||||
| Forging Ball | ≥47 | ≥10 | P+Carbide |
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