Jinghui Industry Limited
Jinghui Industry Limited
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1. Low thermal conductivity, less than 3 W/m.k at room temperature
2. Good Wear resistance, over 276 times than stainless steel
3. Super low friction coefficient, less than 0.12, with self-lubrication
4. Higher density than most of technical ceramics, over than 6 g/cm3
5. High hardness, over than 1300 MPa for Vicker
6. Can withstand higher temperatures up to 2400°
7. Exceptional fracture toughness reaches up to 8 Mpa m1/2
8. Chemical inertness, not interact with almost all strong acid and alkali
9. Resistance to molten metals due to an extraordinary melting point
The outstanding advantages of the ceramic rod shaft in comparison with the metal shaft are high-temperature resistance, high mechanical strength at high-temperature, corrosion resistance, low friction coefficient and so on. Due to those serial versatile characteristics, it greatly raises the service life cycle and reduces maintenance times in pumps, motors.
All these ceramic components can offer high dimensional accuracy, mirror surface, and stringent straightness via fine grinding and diamond polishing.
We have been supplying with many selections of regular diameters with custom lengths, also we are capable of producing various of special shapes, customized diameters in specific materials.
Zirconia ceramic rod/bar is used in the shaft, plunger, automobile Industrial, sealing structure, oil drilling equipment, Insulation parts in electrical equipment, electronic engineering, industrial machinery, and ceramic hair clipper spare parts, with high density, bending strength and breaking tenacity.
We produce various zirconia ceramic rods in different configurations with special design, like square bar, oval rod and so on.
| Property | Units | Material | ||||
| 99.5% alumina | 99%alumina | 95% alumina | ZrO2 (Y-TZP) | ZrO2 (TTZ) | ||
| Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥5.95 | ≥5.72 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
| Max. service temperature | ℃ | 1675 | 1600 | 1450 | 1000 | |
| CTE | 1×10 -6 /℃ | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
| Thermal shock | T(℃) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
| Thermal conductivity(25℃) | W/m.k | 30 | 29 | 24 | 3 | 3 |
| Volume resistivity | ohm.cm | |||||
| 25℃ | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 11 | ＞1 x 10 11 | |
| 300℃ | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 | |
| 500℃ | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 | |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
We have in-housing comprehensive manufacturing types of equipment, including forming, sintering, CNC machining,
precision grinding, laser cutting and so on, it helps us to control the quality very well, also it greatly benefits cost control.
1. We will keep the ceramic parts inside the inner package to be fixed without moving, then it will prevent them from collision each other,
to avoid any cause any chippings during transportation.
2. In addition, the inside of the outer carton will be filled with sufficient protective kinds of stuff.