TongBall Ceramic Sprayed Hemispherical Valve Balls deliver exceptional wear and corrosion resistance at a competitive cost. Engineered with dense Al₂O₃ or Al₂O₃-TiO₂ coatings exhibiting hardness exceeding HV1100 and excellent electrical insulation, these components provide superior protection against oxidizing acids, organic solvents, and high-temperature gases. Ideal for chemical pumps, agitator shafts, and material conveying systems, they effectively combat particle erosion and chemical attack while significantly extending equipment service life.
| Size Range | 1/2" to 24" (Custom non-standard sizes available) |
| Pressure Rating | PN20-PN420(Class150-2500) |
| Ball Material | F304, 1.4301, F316, 1.4401, A105, F51/53/F55/F60/F44, 17-4PH, Inconel 625/718/825, Monel 400/500, K-500, etc. |
| Core Process/Coating | Al₂O₃ / Al₂O₃-TiO₂ (Plasma Sprayed) |
| Operating Temperature Range | ≤900°C |
| Core Technical Parameters (Criteria for High-End Technical Level) |
| Thickness Uniformity | Thickness deviation at any spherical position ≤±8% |
| Thickness | 100 - 500 μm. No missed-spray for ultra-thin |
| Tolerance Range | coatings (<10μm) |
| Surface Hardness | HV 1100-1300 |
| Bond Strength | ≥45 MPa |
| Adhesion Class | Class 0 (GB/T 9286 Cross-cut Test), no coating peeling |
| Interface Porosity | <3% |
| Surface Roughness (Ra) | ≤0.4 µm |
| Surface Defect Rate | ≤0.1 defects per ㎡; no cracks or bubbles |
| Spraying Positioning Accuracy | ±0.1mm |
| Edge Coverage | No edge warping or shrinkage, 100% coverage |
