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Pressure sintering silicon nitride ball

Silicon nitride ball, bearing, valve, pump, valve, mouse and other occasions

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Details Introduction

● ●The main advantages of silicon nitride balls compared to steel balls are:

1. 59% lighter than the steel ball, which greatly reduces the centrifugal force, rolling and wear of the bearing at high speed and accelerated operation;

2. The elastic modulus is 44% larger than that of steel, which means that the deformation is greatly reduced when the force is applied;

3, the hardness is higher than steel, HRC reached 78;

4. The friction coefficient is small;

5, the coefficient of thermal expansion is 1/4 of steel, can withstand temperature changes;

6. It is easy to obtain almost perfect surface finish, Ra can reach 4~6 nanometers;

7. High temperature resistance: silicon nitride ceramic balls still have high strength and hardness at 1050°C;

8, never rust, can work under the condition of no oil lubrication;

9, more resistant to chemical corrosion than steel;

10. No metal pollution;

11. Non-magnetic;

12. Electrical insulation.

13. There is no adhesion wear;

The combination of these excellent properties makes silicon nitride the first choice for high-performance bearing rolling element materials.

● ●Use:

Silicon nitride ceramic balls can be used for all kinds of bearings with extreme performance requirements: high-speed/ultra-high-speed bearings, high-precision bearings, vacuum bearings, high/low-temperature bearings, non-magnetic bearings, and high-precision ball screws. It can also be used as valve ball, swimming valve, fixed valve and measuring ball in chemical pumps, high-temperature pumps and metering pumps.

Silicon nitride ceramic balls are generally assembled into hybrid bearings, which can be used in high-tech industries such as aviation, national defense and other industries, and can also be widely used in chemical, metallurgical, medical, food, oil fields, electronics and other industries.

● ●Company product features:The product has stable performance and good consistency.

● ●Diameter specification：F0.4mm~F140mm.

● ●Levels available:G5~G100。

● ●Remarks:1) Mainly black silicon nitride balls, if necessary, gray silicon nitride balls can also be provided. 2) with a large number of inventory, can meet the requirements of delivery at any time.3) It can meet the requirements of various non-standard dimensions and gauge values.4) Compared with hot isostatic pressing (HIP) silicon nitride balls, the strength is lower and the load-bearing capacity is worse.

Key words:

Silicon nitride products for polycrystalline silicon ceramic grinding ball ceramic parts zirconia knife cup ring ceramic bearing

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