wearable precision Silicon Nitride ceramic bearing sleeve bush pipe
Reputation depends on quality, quality comes from Hard!
Silicon Nitride Ceramic:
The original ceramic is a generic term for pottery and porcelain. That is, a molded sintered body obtained by molding and high-temperature sintering. Traditional ceramic materials mainly refer to aluminosilicates. At the beginning, people did not have high requirements for the selection of aluminosilicate, the purity was not large, the particle size was not uniform, and the molding pressure was not high. The ceramics obtained at this time are called traditional ceramics. Later, it developed to have high purity, small particle size and uniformity, and high molding pressure. The sintered body obtained by sintering is called fine ceramics. In the next stage, people researched the basis of ceramic materials that constitute ceramics, which greatly changed the concept of ceramics. The internal mechanical properties of ceramics are related to the chemical bond structure of the materials that make up the ceramics. Chemical substances that can form a relatively strong three-dimensional network structure when forming crystals can be used as ceramic materials. This mainly includes ionic compounds with relatively strong ionic bonds, simple substances and compounds that can form atomic crystals, and substances that form metal crystals. They can all be used as ceramic materials. Secondly, people have developed fiber-reinforced composite materials based on the characteristics of three-dimensional bonding. Further broaden the scope of ceramic materials. Therefore, ceramic materials have developed into a general term for materials that can be bonded in three dimensions.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
