Product Description:
Steel balls are classified into three types: forged steel balls, cast steel balls, and hot-rolled steel balls.
Forged steel balls are made by forging round steel segments using an air hammer. The wear resistance of forged steel balls is highly dependent on the material and impurities of the round steel used.
The main materials for forged steel balls are 45# steel, as well as 50Mn, 60Mn, and 65Mn. Currently, 75MNCR material offers wear resistance comparable to high-chromium balls. Advantages of forged steel balls include a breakage rate of less than 1%, good wear resistance, low price, and high cost-effectiveness.
In cast steel balls, chromium alloy is the main component. They have poor oxidation resistance and resistance to high-sulfur, diesel fuel, and seawater corrosion. Their strength and density are lower than forged steel balls, and their breakage rate is significantly higher than other types of steel balls. Based on chromium content, wear-resistant balls can be classified as follows:
1. Chromium content 1%-3%, hardness HRC≥45. 1. **Low-chromium alloy cast balls:** These standard wear-resistant steel balls are produced using medium-frequency electric furnace smelting and metal mold or sand casting methods. Their performance is suitable for industries such as metallurgy, mining, and slag processing where grinding precision requirements are not high and wear is not significant.
2. **Chromium content 4%-6%, hardness HRC≥47:** These are called multi-alloy balls, with slightly higher strength and wear resistance than low-chromium steel balls.
3. **Medium-chromium alloy cast balls:** These have a chromium content of 7%-10% and a hardness HRC≥50, offering superior performance compared to multi-alloy steel balls.
4. **High-chromium alloy cast balls:** These have a chromium content ≥10%-14% and a hardness HRC≥58. These are widely used in the cement industry due to their good wear resistance. However, their low cost-effectiveness, resulting in lower market share, has led to their replacement by forged products.
5. **Chromium content exceeding 14%, hardness HRC≥58:** This type of high-chromium steel ball is suitable for industries requiring fine grinding and high wear. Naturally, its price is also quite high, and its cost-effectiveness is slightly lower than that of regular high-chromium balls.
Hot-rolled steel balls: Depending on the raw materials used, the performance of the steel balls varies. They can be broadly categorized as follows, taking a 100mm steel ball as an example:
1. Surface HRC 55-60, core hardness 20-25
2. Surface hardness 55-60, core hardness 30-35
3. Surface hardness 58-63, core hardness 40-45
4. Surface hardness 58-63, core hardness 55-60
| Material | Chemical Elements | |
| C | Si | Mn | P/S | Cr | Hardness (HRC) |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.5-0.8 | <0.035 | <0.25 | 60-65 |
| 60MN | 0.55-0.65 | 0.17-0.37 | 0.7-1.0 | <0.04 | <0.25 | 58-63 |
| B2 | 0.72-0.85 | 0.17-0.37 | 0.7-1.0 | <0.04 | 0.4-0.6 | 55-58 |
| B3 | 0.58-0.66 | 1.3-1.9 | 0.65-0.8 | <0.025 | 0.7-0.9
| 56-65 |
| B6 | 0.97-1.03 | 0.2-0.3 | 1.0-1.1 | <0.025 | 0.5-0.6 | 61-65 |
| Material | 25mm-50mm HRC | 60mm-90mm HRC | 100mm-125mm HRC | 130-150mm HRC |
| Surface | Core | Surface | Core | Surface | Core | Surface | Core |
| C45 | 55-58 | 55-58 | 50-68 | 23-30 | 48-52 | 22-26 | 48-52 | 22-25 |
| 60Mn | 58-62 | 55-60 | 58-62 | 30-36 | 57-61 | 26-32 | 57-61 | 26-30 |
| B2 | 60-64 | 58-64 | 57-64 | 45-60 | 55-60 | 38-48 | 55-60 | 38-42 |
| B3 | 62-65 | 60-65 | 60-65 | 58-65 | 56-65 | 50-62 | 56-63 | 50-55 |
| B6 | 62-65 | 60-65 | 61-65 | 58-65 | 60-63 | 50-62 | 61-63 | 50-55
|
Production Line:
1) Traditional Forged
Raw material →Cutting →Heating → Water quenching → Tempering
2) Auto Hot Rolling
Raw material →Hot Rolling Mill → Water Quenching → Tempering
Technical Parameters:
| Testing | Jinan Zhongwei established in 2000, leading manufacturer and exporter of grinding balls in China |
| Production Capacity | Annual output is 50000 tons to 80000 tons |
| Breakage Guarantee | ≤0.5-1.0% |
| Impact | >12 |
| Exported Countries | 20 more countries including UAE, Zambia, South Africa, Peru, Chile, Australia, UK, USD, Turkey |
| Wear Resistance | Better than cast ball with longer service life |
| Impact Toughness | >12 joules |
| Surface Quality | Smooth surface without pouring mouth, sand hole, and ring band |
| Breakage Rate | <0.5% |
| Product Name | High Hardness Carbon Forged Steel Grinding Ball 60mm 150mm Forged Grinding Steel Balls |
Applications:
1. Steel
2. Cement Plants
3. Power Stations
4. Mining
5. Mechanical
Company Information:
inan Zhongwei established in 2000 , we are a leading manufacturer and professional exporter grinding balls in China.
Our company covers an area of 15000 square meters, now we have 150 staff, including 13 technical staff. Annual output is 50000 tons to 80000 tons .
Main products : forged steel ball, cast iron ball ,grinding rod, cylpebs
We have exported to 20 more countries, UAE, Zambia,South Africa, Peru, Chile, Australia, UK, USA, Turkey and so on.
Testing
Quality control for each production shift (4hours/Shift);
Hardness, chemical elements and impact testing after production for each production shift;
SGS –third party testing before each delivery
Packing and Shipping:
Product Packaging:
Each Forged Grinding Ball is carefully packed in individual boxes to ensure safe transportation and handling. The boxes are labeled with product information and specifications for easy identification.
Shipping:
Our Forged Grinding Balls are shipped in sturdy cartons to protect them from damage during transit. We work with trusted shipping partners to ensure timely delivery to our customers.
FAQ:
What’s the MOQ?
The MOQ varies for different products. Please contact us to understand.
May I visit your factory?
Yes, we will arrange professional reception personnel to patiently explain to you.
Why choose us over other suppliers?
We have a large scale, strong strength, and rich experience, professional technology, and perfect customer service, and have obtained various certifications such as CE/ISO9001.
