1.Pictures of silicon nitride ceramic hollow bolts

 2.Descriptions of Silicon Nitride Ceramic hollow bolts

Advantages:

1.Manufacture silicon nitride ceramic wear parts from 1995.

2.Excellent  and stable quality.

3.Plenty of stocks.

Materia: silicon nitride

Stable and reliable silicon nitride industrial wear parts can be produced and supplied by our company, for we have over 30 years experience in the exploring and manufacturing. As a pioneer in China, we have supplied hundreds of silicon nitride products to different fields, such as aviation, aerospace, military, chemical, metallurgy, machinery,petroleum, energy and electronics etc. Many of them replace the imported ones and fill the blank in China.

Specially shaped silicon nitride parts can also be produced according to customers’ requirements and drawings. Relying on powerful technical ability and normative quality management system, we can provide stable and precise silicon nitride parts and offer the best service to the customers.

The specifications are as follows:      

                         Diameter: Φ1mm~Φ300mm       length: <1000mm

Characteristics of Silicon Nitride Ceramic Parts:

1. High corrosion resistance. It can be used in strong acid and alkali situation.

2.High temperature stability. It can be used in high temperature situation, and the highest temperature can reach to 1400 °C. The strength and hardness in 1100 °C is almost the same as in room temperature.

3.Electrical insulation, non-magnetic. It can be used in magnetic field

4.Low density of 3.26 g/cm³, high bending strength and high hardness. It can be considered as wear resistant materials.

5.Low thermal expansion coefficient of 3.2×10^-6/K, which is 30% of Al₂O₃, and 40% of ZrO₂. It can bear a sharp temperature change.

Silicon Nitride Material Properties

Performance Comparison of Structural Ceramics and Ordinary Steel

 3.Production line of Products

4.Packaging of products

5.Fair

We have been to a lot fairs and the latest fair is 2015 HANNOVER MESSE Gemany.

6.Information of company

Founded in 1963, Beijing Sinoma Synthetic Crystals Co, LTD.Is a hi-tech state enterprise, belongs to the China National Materials Group Co., Ltd. An excellent 

technical team headed by the statelevel experts has built up,which provides a reliable guarantee for the continuous and rapid technological development. 

Advanced ceramic Division (technical center of precision ceramic bearing) is mainly engaged in researching,manufacturing and developing advanced ceramic materials such as Si3N4, ZrO2, Al2O3 and so on.

Main Products:

1). Si3N4 and ZrO2 ceramic balls and rollers.

2). Si3N4 ceramic bearing rings.

3). The whole series full ceramic bearings, hybrid bearings, sliding bearings and shaft sleeves made by Si3N4 and ZrO2 materials.

4). Industrial wear parts made by Si3N4 and ZrO2 materials. According to customer’s application condition and drawings, various precise and irregular ceramic parts can bedesigned and fabricated.

7.Welcome to contact us