| Model NO. | Customized |
|---|---|
| Material | Silicon Nitride |
| Usage | Ceramic Nozzle, Ceramic Bearing |
| Color | Black |
| Shaping Methods | Hip, CIP, Dry Pressed |
| Secondary Process | CNC Machining, Fine Grinding |
| Surface Treatment | Diamond-Like Polishing |
The specification of ceramic parts
| Material option | Silicon nitride(Si3N4), Zirconia (ZrO2), Alumina(Al2O3), Silicon carbide(SiC) |
| Forming methods | Dry pressed, Ceramic injection molding, Hot pressed, ISO pressed |
| Specification | OD can be from 1 to 50mm, length can be from 10mm to 800mm |
| Precision processing | CNC machining, Precision grinding, Polishing, Lapping, |
| Tolerance | The tolerance of OD and ID can be 0.001mm, and the tolerance of length can be 0.001mm |
| Key parameters | Roughness to be 0.02mm, Parallelism to be 0.001mm |
| Surface quality | Free of cracks, foreign contamination, mirror surface better than Ra0.02 |
The typical application of Si3N4 ceramics
It's widely used for producing bearings, shafts, gas turbine blades, mechanical seal rings, permanent molds, steam nozzle, the heated surfaces of engine components
The gallery of other technical ceramic parts
Datasheet of Technical ceramics
| Property | Unit | Material | ||||
| Si3N4 | 99.5% Al2O3 | 99% Al2O3 | 96% Al2O3 |
ZrO2 | ||
| Density | g/cm3 | ≥3.20 | ≥3.90 | ≥3.85 | ≥3.65 | ≥6.0 |
| Water absorption | % | - | 0 | 0 | 0 | 0 |
| Hardness | HV | - | 1700 | 1700 | 1500 | 1300 |
| Flexural strength | Mpa | ≥600 | ≥379 | ≥338 | ≥320 | ≥1200 |
| Compressive strength | Mpa | ≥2500 | ≥2240 | ≥2240 | ≥2000 | ≥1990 |
| Fracture toughness | Mpa m1/2 | 6 | 4-5 | 4-5 | 3-4 | 6.5-8 |
| Max. service temperature | ºC | 1200 | 1675 | 1600 | 1450 | 1000 |
| Coefficient of thermal expansion (CTE) | 1×10 -6 /ºC | 3.2 | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 |
| Thermal shock | T(ºC) | ≥600 | ≥250 | ≥200 | ≥220 | ≥300 |
| Thermal conductivity(25ºC) | W/m.k | 20 | 30 | 29 | 24 | 3 |
| Volume resistivity | ohm.cm | |||||
| 25ºC | - | >1 x 10 14 | >1 x 10 14 | >1 x 10 14 | >1 x 10 11 | |
| 300ºC | - | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | |
| 500ºC | - | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | |
| Dielectric constant(1Mhz) | (E) | 6 | 9.7 | 9.5 | 9.5 | 29 |
We have in-housing comprehensive manufacturing types of equipment, including forming, sintering, CNC machining, precision grinding, laser cutting, and so on, which helps us to control the quality very well. Also, it greatly benefits cost control.
Remark:
We have the complete quality-control system per ISO9001, including IQC, IPQC, QA, and OQC processes.
Jinghui Ceramic
We will contact you within 1 working day, please pay attention to the email with the suffix “@jinghui0738.com”.
We will contact you within 1 working day, please pay attention to the email with the suffix “@jinghui0738.com”.
