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Chromium Alloyed Grinding Balls are high-performance grinding media used in ball mills for material refinement across mining, cement, and chemical industries . Manufactured via precision casting, these balls feature adjustable chromium content (10-18% for high-chrome grades) to match varying abrasion requirements. Our grinding balls deliver consistent particle size reduction while minimizing wear-related downtime.
High-chrome grades (10-18% Cr) form a martensitic matrix with M7C3 carbides, achieving a hardness of 58-63 HRC and resisting abrasion 3x better than low-chrome alternatives . The microstructure ensures uniform wear, avoiding irregular shapes that reduce grinding efficiency.
Even with high hardness, our grinding balls maintain an impact value of ≥3.5 J/cm², preventing shattering in high-impact ball mill operations .
With a annual capacity of 30,000 tons, we supply batches from 5 tons (MOQ) to large-scale industrial orders, supporting cement plants and mines worldwide .
Parameter | High-Chrome Balls | Low-Chromeballs |
Chromium Content | 10.0-18.0% | 1.0-3% |
Hardness | 58-63 HRC | ≥45 HRC |
Impact Toughness | ≥3.5 J/cm² | ≥3.5 J/cm² |
Diameter Range | 8 mm - 130 mm | 8 mm - 130 mm |
Microstructure | Martensite + Carbides (M+C) | Pearlite + Carbides (P+C) |
Endurance Test (5m) | ≥15,000 cycles (φ<80mm) | ≥13,000 cycles (φ<80mm) |
Grinds iron ore, gold ore, and copper ore in ball mills, facilitating mineral separation and extraction . High-chrome balls are preferred for abrasive ore types.
Processes clinker and limestone, ensuring uniform particle size for cement hydration . The balls’ wear resistance reduces replacement frequency in 24/7 cement mill operations.
Used in grinding refractory materials and coal, supporting chemical reactor feed preparation and power plant combustion efficiency .
