20mm POM Plastic Covered Drawer Pulley Bearing Roller with M6 Screw for Display Cabinet
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 folded ceramic fiber modules, alumina ceramic mini balls, alumina ceramic grinding ball factory is stable, safe and reliable, complete in specifications and diverse in variety. With pragmatic spirit and honest labor, we make our products of the best quality and our service optimal. We are able to provide you with a wide range of high quality hair products at competitive prices. The company gives full play to the role of R&D personnel and at the same time drives young technical personnel to improve their business capabilities.
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.
Our company through the quality management system certification, adhere to science and technology, pay close attention to quality, look at the world and put our 20mm POM Plastic Covered Drawer Pulley Bearing Roller with M6 Screw for Display Cabinet to the world. Our company's operations revolve around the needs of our customers and respond strongly to their needs for value enhancement. Our company attaches great importance to the development of products, in order to continuously improve ourselves and improve the performance of products.
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