Ball Mill Grinding Balls
Product Advantages
- High Hardness & Toughness Dual Characteristics: Maintains stable shape and dimensional accuracy under continuous impact and wear conditions, adapting to high-intensity ball mill operation needs.
- Uniform structure from surface to core – ensures balanced performance and minimizes breakage.
- Optimized alloy design – tailored chromium and carbon ratios for dry or wet grinding conditions.
- Excellent wear resistance – extend mill uptime and lower total grinding cost.
- Multiple options available – forged steel balls, high-/medium-/low-chrome cast balls, and OBEI balls for customized solutions.
1.Ball Mill Grinding Balls—Core Support for Efficient Grinding
Ball mills are core equipment for fine grinding in mineral processing and cement industries, widely used in gold, iron, nickel mines, etc. Operational efficiency depends on the performance of the grinding media. In high-intensity grinding scenarios, steel balls must meet rigorous requirements for stable hardness, wear resistance, and low breakage. Chengda’s ball mill dedicated wear-resistant steel balls precisely meet these needs. Through scientific formulas and process optimization, they balance appropriate hardness, low breakage rates, and strong wear toughness, becoming the core support for efficient grinding and safeguarding efficient production across industries.
Ball Mill Motion
2. Main Types of Grinding Media for Ball Mills
3. Product Specifications
| Parameter | High Chrome Cast Balls | Forged Steel Grinding Balls |
|---|---|---|
| Diameter Range | 4.6 mm – 140 mm | 4.6 mm – 140 mm |
| Material Type | Chrome Alloy Cast Steel | Alloy Forged Steel |
| Chemical Composition |
C: 2.0–2.6% Si:≤1.0% Mn:0.3-1.5% Cr: 10-28% P:≤0.06 S: ≤0.06% |
C: 0.42–1.03% Cr: 0.25–1.2% Mn: 0.5–1.1% Si: 0.17–1.9% P：≤0.035% S：≤0.035% |
| Hardness (HRC) | ≥60 | ≥60 |
| Impact Toughness | ≥5.5 J/cm² | ≥12 J/cm² （Typical value 12–16 J/cm²） |
| Breakage Rate | ≤0.5% | ≤0.5% |
| Application Industries | Cement, Power, Beneficiation Plants (Ball Mills), Building Material Processing | Mining, Metallurgy, Beneficiation Semi-Autogenous Mills (Copper/Gold/Iron/Nickel Ores, etc.) |
4.Production Process & Flow
- Forged balls: Heat the steel billet → High-pressure forging into balls → Precision heat treatment → Uniform hardness distribution
- Cast balls (Aubay balls): Patented alloy formula → Metal mold casting → Self-hardening & heat treatment → High-toughness martensitic structure
