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Ball.Ceramic Ball Zirconia Ball (Zr02)
It has the highest mechanical strength and high toughness at room temperature. Furthermore, it has a similar thermal expansion rate to metals, making it easy to weld.
It is good for bearings with low heat conduction as well as good heat insulation and self-lubrication capabilities.
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Production Range
0.5mm~50.8 mm (30 mm or bigger, customizable)
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Applications
Ceramic bearings, Combined bearings, Cold machining tools, Dies, Guide rollers, Valves, etc.
본문
(Chemical Composition)
| Symbol | Chemical Composition |
|---|---|
| ZrO2 | 94.75% |
| Y2O3 | 5.20% |
| Other | 0.055% |
Mechanical Property
| Performance of ZrO2 Ceramic Material | ||
|---|---|---|
| Density | g/㎤ | 6.05 |
| Hardness(HV) | Hv | 1200 ~ 1250 |
| Bending Strength | Mpa | 300 |
| Crushing Strength | Mpa | 2100 |
| Elastic Modulus | Gpa | 210 |
| Fracture Toughness | Mpa m½ | 10 |
| Thermal Expansion Coefficient | 10-6/K | 10.5 |
| Max Usage Temperature | ℃ | 800 |
Production Grade (Unit : ㎛)
| Grade | Name Application Range | Shape Precision and Roughness | Sectional Precision and Gauge | ||||
|---|---|---|---|---|---|---|---|
| Grade | Metric | Inch | Diameter Variance (VDWS) | Sphericity (VDWS) | Surface Roughness (Ra) | Variance in LOTs (VDWL) | Gauge Interval |
| 10 | 0.3 ~ 25 | 0.025 ~ 1 | 0.25 | 0.25 | 0.025 | 0.5 | 1 |
Ball-mill products have separate grades.