Jinan Zhongwei Casting And Forging Grinding Ball Co.,Ltd
| Supply Ability | 50000 Tonne per year |
| Delivery Time | 5-7 days |
| Packaging Details | Steel drums,container bags |
| Material | Iron or steel |
| Size | Dia20-1500mm |
| HRC | 55-65 |
| Breakage | ≤1% |
| Application | 1,cement plant 2,power station 3,mine 4,chemical industry |
| Packing | bag or steel drums |
| Brand Name | ZW |
| Model Number | 45# 60Mn B2 B3,Chrome |
| Certification | ISO9001 SGS |
| Place of Origin | Jinan |
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Product Specification
| Supply Ability | 50000 Tonne per year | Delivery Time | 5-7 days |
| Packaging Details | Steel drums,container bags | Material | Iron or steel |
| Size | Dia20-1500mm | HRC | 55-65 |
| Breakage | ≤1% | Application | 1,cement plant 2,power station 3,mine 4,chemical industry |
| Packing | bag or steel drums | Brand Name | ZW |
| Model Number | 45# 60Mn B2 B3,Chrome | Certification | ISO9001 SGS |
| Place of Origin | Jinan | ||
| High Light | grinding media steel ball ，forged grinding steel ball | ||
3 inch Good Wear Resisitance forged and cast Grinding Steel Ball
Type and chemical composition of forged balls
Name | Material | Chemical composition | Hardness | |||||
| C | Si | Mn | S | P | Cr | HRC | ||
forged ball | B3 | 0.58-0.66 | 1.6-1.9 | 0.65-0.8 | <0.025 | <0.025 | 0.7-0.9 | 58-63 |
| B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.04 | 0.4-0.6 | 58-63 | |
| 60Mn | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.04 | <0.25 | 58-62 | |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | <0.035 | ≤0.25 | 50-55 | |
Hardness distribution
Material | Dia25mm-Dia50mm | Dia60mm-Dia90mm | Dia90mm-Dia125mm | |||
surface | core | surface | core | surface | core | |
| B3 | / | / | / | / | 56-63 | 45-53 |
| B2 | 60-65 | 58-62 | 58-63 | 50-55 | 56-60 | 40-45 |
| 60Mn | 58-63 | 55-60 | 58-63 | 40-45 | 56-60 | 30-35 |
| 45# | 55-58 | 45-55 | 55-58 | 30-35 | 50-55 | 25-30 |
Type and chemical composition of cast iron balls
Name | Material | Chemical composition | Hardness | |||||
| C | Si | Mn | S | P | Cr | HRC | ||
Cast ball | Special Hi-Cr | 2.0-3.0 | <1.0 | 0.5-2.0 | ≤0.06 | ≤0.08 | >20 | 58-64 |
Special Hi-Cr | 2.0-3.0 | <1.0 | 0.5-2.0 | ≤0.06 | ≤0.08 | >15 | 58-64 | |
High-Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≤0.06 | ≤0.08 | >10 | 58-62 | |
Medium-Cr | 2.0-3.2 | <1.0 | 0.5-2.5 | ≤0.06 | ≤0.08 | ≥5 | 50-55 | |
Low-Cr | 2.2-3.4 | ≤1.2 | 0.5-1.5 | ≤0.06 | ≤0.08 | 1.0-1.5 | 42-46 | |
Hardness distribution
Material | Dia25mm-Dia50mm | Dia60mm-Dia70mm | Dia80mm-Dia90mm | |||
surface | core | surface | core | surface | core | |
Special hi-CR:>20 | 60-64 | 59-63 | 60-64 | 58-62 | 60-64 | 57-61 |
Special hi-CR:>15 | 58-62 | 57-61 | 58-62 | 56-60 | 58-62 | 50-59 |
High Cr:>10 | 58-62 | 57-61 | 58-62 | 56-60 | 58-62 | 50-59 |
Medium Cr:≥5 | 50-55 | 49-54 | 50-55 | 48-53 | 50-55 | 47-52 |
Low Cr:1-1.5 | 42-46 | 41-45 | 42-46 | 40-44 | 42-46 | 39-43 |
The production process of the forged grinding balls
1). Raw material:
All the material is qualified with certificate and made in the Chinese largest steel production enterprise.
2). Different steel specifications ccording to the clients's requirements.
Main Steel Material :C45 Steel;60Mn Steel;B2 Steel
3). Steel Cutting:
the steel bars should be cut into small pieces according to the size of steel balls required by the order.
4). Heating:
we use the electric furnace instead of the traditional coal stove, the biggest advantage is that all the steel bars can accept the most approriate temperature during the heating progress. It affect the hardness and toughness directly.
5). Hammer forging:
The raw material is forged to a certain deformation by the air hammer, when the compression ratio increased, the micro-structure become more compact so that the hardness and the toughness can be improved.
6). Heat treatment:
Both the water quenching heat treatment production line and our own temperature control technics are important.
We have mature production technicians responsible for the heat treatment process as we know this process affect the grinding balls performance directly.
7). Quality Control.
Raw material test before production
Hardness test Drop Test Impact Test Core pulling Test after production
SGS test before delivery
Certificate: ISO 9001:2008
Packaging & Shipping
Packing: Container bags or steel drums or others.
For Container Bag, Net weight 1000Kgs ,Gross Weight 1002KGS ,Measurement 0.4CBM
For Steel Drums ,Net weight 850-950Kgs ,Gross Weight 865-965KGS ,Measurement 0.3CBM .
Shipping and delivery
Port of loading:Qingdao Port,China
Delivery time : Normally 2-3 weeks after down payment received.
Partial shippment allowed
Company Details
Business Type:
Manufacturer
Year Established:
2000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Established in 2000, We Jinan Zhongwei casting and forging grinding ball Co.,Ltd, are leading manufacturer and professional exporter of grinding media balls in China. with the annual output of 50,000 to 70,000 metric tons. Our products grinding media balls are mainly exported to more than 20 countri... Established in 2000, We Jinan Zhongwei casting and forging grinding ball Co.,Ltd, are leading manufacturer and professional exporter of grinding media balls in China. with the annual output of 50,000 to 70,000 metric tons. Our products grinding media balls are mainly exported to more than 20 countri...
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