
Stainless Steel Ring Ceramic Ball Bearing S699 S608 S699 R188
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 ℃.
We have successfully developed new Alumina Ceramic Tube, ceramic alumina porous tube, ceramic tube price, and the product quality has won a good reputation in the industry. The pursuit of practical products, the application of advanced design and manufacturing technology to the manufacture of products, and the continuous development of energy-saving, environmentally friendly new products is the unremitting pursuit of all our members. On the road of continuous development and innovation, our company will absorb the essence and discard its dross, innovate and change constantly and bring more quality products to meet the needs of the masses. The company has always been adhering to the innovative and efficient enterprise spirit and is committed to product development and production.
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.
In order to continue to enhance our Stainless Steel Ring Ceramic Ball Bearing S699 S608 S699 R188 and deliver more cutting-edge features and performance, we are applying some of the latest improvements in technology. All employees of the company adopt a truth-seeking and pragmatic attitude, and the spirit of excellence. We continuously promote the concept of green development and actively fulfill our responsibilities together with our partners to promote social harmony and progress.
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