wear resistant precise Alumina Ceramic Roller guide
Reputation depends on quality, quality comes from Hard!
Alumina Ceramics:
Alumina ceramics are chemically stable and resistant to corrosion. They do not react with other inorganic acids except hydrofluoric acid. They do not react with oxygen in a dry atmosphere at 800 ° C. Above 800 ° C, silicon oxide film is formed on the surface. The elevated silicon oxide film gradually becomes stable, and a dense silicon oxide film can be formed with oxygen at about 1000 °C. Can be maintained to 1400 ° C is basically stable; Silicon Nitride hardness, wear resistance, Mohs hardness is second only to diamond, cubic boron nitride, boron carbide, silicon carbide, anti-mechanical impact; silicon nitride is a covalent bond compound, Difficult to be dense, sometimes need to add additives, the density is about 3.4 (different forming methods have different densities, hot forming density is higher, steel density is about 7.85, titanium alloy density is about 4.5, the unit is g/cm3); more brittle. Although Silicon Nitride Ceramics have ideal material properties, silicon nitride ceramics are currently costly. The cost of the same structural parts is about several times that of alumina ceramics. Again, the welding of silicon nitride ceramics with metals is There are not many practical applications in China, and further research and improvement are needed in terms of reliability and cost reduction.
properties: High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.
Data Sheet↓
Color: White/Ivory Density: 3.9g/cm3 Alumina Content: 96% 99% 99.5% Gas permeability: 0 Water Absorption: 0 MONS' Hardness: 82 Vickers Hardness (Hv50): 15.7(1600) Gpa(Kg/mm²) Flexural Strength(20°C): 330Mpa Compressive Strength(20°C): 2000Mpa Fracture Toughness (20°C): 4 MPam1/2 Thermal Conductivity(20°C): 27.5W(m.K) Thermal Expansion Coefficient: 7.6 10-6/°C Thermal Shock Resistance: 200 △T°C
Maximum use temperature 1650°C
Dielectric Strength: >10 KV/mm
Dielectric Constant: 9.1er
Dielectric Loss Angle(1MHz): 0.0002-0.0003
Volume Resistivity(20°C): >1014Ω.cm
Application industry: Machinery, electronic, chemical, petroleum etc. Specific application: Electrical ceramic substrate, plunger, sealing ring 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
Products Show
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.