Jinghui Industry Limited
Jinghui Industry Limited
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1. Low thermal conductivity, less than 3 W/m.k at room temperature
2. Similar coefficient of thermal expansion as stainless steel
3. Excellent wear resistance, over 276 times than stainless steel
4. Exceptional fracture toughness reaches up to 8 Mpa m1/2
5. Higher density than most of technical ceramics, over than 6 g/cm3
6. High hardness, over than 1300 MPa for Vicker
7. Chemical inertness, aging resistance and not rust forever
8. Resistance to molten metals due to an extraordinary melting point
9. Can withstand higher temperatures up to 2400°
With excellent mechanical strength and toughness, people call zirconia as "ceramic steel" in the technical ceramic filed. Furthermore, zirconia offers superb high hardness, excellent thermal shock resistance, high-temperature properties, and low thermal conductivity, due to these outstanding properties, zirconia is considered as an ideal raw material of ceramic location pin.
As zirconia ceramic has a superb resistant crack, so it's easier to do high precision processing for zirconia ceramic part, then get a very high accuracy dimension.
The material of welding technology is usually used in any extreme environment, should be chosen according to different application, to meet its high wear resistance, high durability, high-efficiency requirements.
We produce various zirconia ceramic pin in different materials with a special design.
Datasheet of Technical ceramics
| 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.