YDTech® suppliers of ceramics Si3N4 structural parts, fasteners, slots, blades, teethes, flanges, crucibles! manufacturers of silicon nitride Si3N4 plungers, nozzles, impellers, shafts, seals, in china.

we have decades of expertise in the producing precision technical ceramics for tough industries. we have a solid grasp of the complexities associated with generating silicon nitride ceramics and are well equipped to produce high-purity, hot pressed and sintered Si3N4 with minimal need for post production grinding and finishing. This preserves the inherent mechanical strengths of silicon nitride and ensures the longevity of components.

The application of ceramic ball bearings under extreme working conditions optimizes the precision machining equipment and technology of rolling elements, rings, cages and other parts, and improves the contact and lubrication performance between parts by precision machining of the surface of parts.

bearing rings are the parts that rotate and support the rolling eleents in the bearing work, and the level of processing technology and accuracy directly affect the service behavior of the bearing. Compared with steel bearing rings, the processing process of ceramic ball bearing rings is complicated by the hard and brittle characteristics of ceramic materials themselves. The processing technology of ceramic ball bearing rings is mainly precision grinding and precision grinding, so in the process of the development and application of ceramic bearing technology, the hybrid ceramic bearings used with steel bearing rings and ceramic balls are the first to be applied.

the main causes of groove error in groove grinding of ceramic bearing rings are the accuracy of the outer edge of the grinding wheel, the grinding process, the fixture and the grinding time. The clamping methods of ceramic bearing rings include pressure roller type and pneumatic type; The grinding process is currently dominated by plunge superfinishing.

Si3N4 ceramic ball bearings have become the standard bearings for some equipment in aircraft APU, aircraft accessory casings, rocket engines and other fields, with the development of high-end manufacturing equipment in the process of extremely complex service environment and working conditions, Si3N4 ceramic ball bearings play a more significant comprehensive advantage.

due to its unique intersection of chemical and thermodynamic properties, silicon nitride can be easily deployed in some of the harshest operating environments in the world. Hot-pressed silicon nitride has excellent high-temperature performance and is ideal for challenging conditions in seal face assemblies, including boiler water reactor pumps, pressurized water reactor pumps, corrosive boron-containing water services, and inside rotating bearings.

physical properties for precision ceramics Si3N4 silicon nitride

Silicon nitride, with Si3N4 as the main component, has excellent thermal shock resistance and high-temperature strength, making it an ideal material for high-temperature environments such as automotive engines and gas turbines. It is widely used in turbocharger rotors, heating plugs for diesel engines and electrical plug-in parts, and also plays an important role in aerospace and industrial manufacturing, providing reliable performance and long-term stable operation for components in various high-temperature and high-pressure environments

thermal properties for precision ceramics Si3N4 silicon nitride

Silicon nitride has a low coefficient of thermal expansion and extremely high thermal shock resistance, making it excellent in high-temperature environments.

Low coefficient of thermal expansion: The low coefficient of thermal expansion of silicon nitride means that it has less ability to deform at high temperatures, which makes it particularly suitable for high-temperature applications that require stable size and shape, such as high-temperature furnaces and heat treatment equipment.

electrical properties for precision ceramics Si3N4 silicon nitride

Extremely high thermal shock resistance: Silicon nitride exhibits extremely high thermal shock resistance, i.e., retains its strength and integrity under sharp temperature changes. This makes it useful in applications that need to undergo frequent temperature cycling, such as thermocouplers and spark plug insulators.

The unique combination of silicon nitride properties makes it suitable for a wide range of applications at high temperatures, high pressures and harsh environments. From the automotive industry to the energy industry, from aerospace to industrial manufacturing, silicon nitride plays an important role, providing reliable material solutions for a wide range of high-temperature structural parts. Its superior performance and durability not only improve the efficiency and reliability of the equipment, but also drive technological advancement and innovation.