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Szczegóły Produktu:
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Specifically engineered for high-intensity, high-purity grinding applications in the mining, ceramics, and chemical industries, offering exceptional durability and grinding efficiency.
These grinding balls are produced from high-purity, submicron silicon carbide powder using a roll‑pressing technique, followed by pressureless sintering in a vacuum furnace at 2100–2200 °C. The resulting SSiC grinding balls feature a Vickers hardness (HV10) ≥ 2300, a bending strength ≥ 350 MPa, a fracture toughness ≥ 4.0 MPa·m¹/², and a wear loss as low as 0.01–0.02 g/kg·h. Their dense, non‑porous microstructure provides excellent resistance to acids, alkalis, and high temperatures, with a long‑term service temperature of up to 1600 °C in air.
Ultra‑high wear resistance – Wear loss is only 1/5 to 1/10 that of conventional alumina balls, significantly extending replacement intervals and lowering operating costs.
Contamination‑free grinding – The high‑purity SSiC material generates minimal and chemically inert wear debris, ensuring the purity of the ground product.
Excellent impact resistance – With a fracture toughness ≥ 4.0 MPa·m¹/², these balls are well‑suited for high‑energy grinding equipment such as high‑speed stirred mills and planetary mills.
High crushing strength – The high single‑ball crushing strength minimises breakage during grinding, reducing the risk of fractured media.
High‑temperature and corrosion resistance – Suitable for long‑term service up to 1600 °C and resistant to strong acids, alkalis, and organic solvents.
Dense microstructure – Near‑theoretical density (≥ 3.10 g/cm³) is achieved through pressureless sintering, resulting in extremely low porosity.
| Property | Typical Value |
|---|---|
| Density | ≥ 3.10 g/cm³ |
| Vickers Hardness (HV10) | ≥ 2300 |
| Bending Strength | ≥ 350 MPa |
| Fracture Toughness | ≥ 4.0 MPa·m¹/² |
| Elastic Modulus | ≥ 400 GPa |
| Thermal Conductivity | ≥ 80 W/(m·K) |
| Coefficient of Thermal Expansion (20–1000°C) | 4.0–4.5 * 10⁻⁶ /K |
| Single‑Ball Crushing Strength (φ10 mm) | ≥ 15 kN |
| Wear Loss (ASTM method) | 0.01–0.02 g/kg·h |
| Maximum Service Temperature (in air) | 1600°C |
Note: Crushing strength is diameter‑dependent – larger balls exhibit higher crushing force values. Typical values for other diameters are available upon request.
Powder preparation – High‑purity, submicron α‑SiC powder with a narrow particle size distribution is selected.
Forming – Roll pressing ensures high sphericity and excellent dimensional consistency.
Drying – A controlled drying profile prevents cracking of the green bodies.
Sintering – Pressureless sintering is performed in a high‑vacuum furnace at 2100–2200 °C to achieve full densification.
Finishing – Surface polishing or size classification is carried out as required.
Quality inspection – Each batch is tested for hardness, density, wear loss, and crushing strength to ensure consistent performance.
Mining & Metallurgy – Fine grinding of gold, copper, and iron ores; heavy medium separation; coal pulverisation.
Advanced Ceramics – High‑purity grinding of ceramic powders such as alumina, zirconia, silicon nitride, and silicon carbide; dispersion of glazes and pigments.
Chemicals & Coatings – Ultra‑fine grinding and dispersion of titanium dioxide, calcium carbonate, silica powder, pigments, dyes, and pesticide suspensions.
Battery Materials – De‑agglomeration and nano‑scale grinding of lithium iron phosphate (LFP), NCM cathode materials, and graphite anodes.
Other high‑purity applications – Electronic materials, cosmetics, food additives, pharmaceutical excipients, and more.
For further information or to discuss your specific requirements, please contact us directly.
Osoba kontaktowa: Ms. Yuki
Tel: 8615517781293
Polish
