
Sgj Electrical Insulation Ceramic Bearing Zro2/ Si3n4/ Sic Full/ Hybrid Ceramic Bearing
Si3N4 Ceramics is a new type of non-metallic ceramic material. It is characterized by high strength at room temperature and high temperature, and the strength of Si3N4 can be maintained at 1200 ℃.
Our company obtains the business opportunity through the fair competition, our ceramic drain pipe, high alumina ceramic tube, folded ceramic fiber modules price is reasonable, the quality service has the guarantee. Our corporate style is, standardized and orderly, smooth and effective, coordinated and measured, and powerful in execution. The fierce competition in the market also forces enterprises to develop in the direction of informatization in sales and management.
Product Description
Si3N4 Ceramics is a new type of non-metallic ceramic material. One of the popular product of Si3N4 ceramics is Si3N4 tube. The tubes are mainly used in conjunction with thermocouples to protect them. It allows the thermocouple to operate properly in special environments and to resist high pressures and high flow rates.
Process Method
It uses silicon powder as raw material and is first made into the desired shape using the usual molding method. Initial nitriding is done in nitrogen at 1200°C, so that part of the silicon powder reacts with nitrogen to form silicon nitride. This way the whole body already has some strength. It is then nitrided a second time in a high-temperature furnace at 1350°C to 1450°C to react with the silicon nitride.
Specifications
Thermocouple protection tube: diameter Φ12-80mm, length 600-1800m

Data Sheet
Items | Data |
Sintering method | gas pressure sinter |
Density | >3.2g/cm3 |
Si3N4 content | >92% |
Flexural strength | >750Mpa |
Compressive strength | >1500Mpa |
Thermal conductivity (W/mk) | >22 |
Porosity | 0 |
Thermal expansion coeff. (RT-1000℃) | 3.2 |
Max temperature in air | 1400℃ |
Hardness (HRA) | >92 |
Q&A
1. How long is the service time of Si3N4 ceramics?
It will be different as per your application. The general period is 25-30days.
2. What is the payment terms?
Our payment terms are T/T, L/C or as per your request.
While ensuring the quality of our Sgj Electrical Insulation Ceramic Bearing Zro2/ Si3n4/ Sic Full/ Hybrid Ceramic Bearing, we also give our customers competitive and reasonable prices. In line with the business philosophy of 'mutual benefit, small profits and high sales', our company uses the logistics channel to provide high-quality service and preferential prices for customers in various regions. Our company has been based in the domestic market, facing the international market, we take our own key technology and research results as the core, absorb all kinds of advanced technology and resources in the world.
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