insulated Alumina Ceramic sealing ring cylinder
Reputation depends on quality, quality comes from Hard!
Alumina Ceramics:
In the traditional grouting method, the inside and outside surfaces of the green body after the demoulding are rough. Generally, it needs to be repaired several times, and the workload of bonding is also large. Modern methods such as high-strength plaster or resin mold, pressure grouting The work of repairing the stick has been greatly reduced. The work of repairing the blank, punching and bonding must be performed manually, prone to waste, and the moisture content of the green body must be grasped. Drying: pre-drying (also called semi-dry), that is, the blank The body water content is reduced from 15% to 17% (water content during bonding) to about 8%. In the traditional casting method, the pre-drying of the green body is naturally dried in the grouting workshop. 16 hours after the worker is off work Inside, the high temperature (33 ~ 40 ℃) and high humidity (40% -60%) are kept in the grouting workshop to make the green body dry slowly. After pre-drying, the moisture content of the wet green body is from 15% to 17% It should be reduced to 8% to 10%. Attention should be paid to prevent waste due to excessive drying or uneven drying. Modern grouting methods generally use hot air to force the billet to dry directly. The pre-drying shrinkage of vitrified porcelain billet is 4 %, The pre-drying shrinkage of the clay body is 2%. Secondary blanking (brushing): This is the final process of grouting, which will ultimately determine the size of the body. When the brush body water content is less, water should be less brush blank, can not have oil. After completion of the brush body repair stored inside of 28-35 deg.] C, ready for glazing.
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
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FAQ
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A: We are factory.
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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.
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A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
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A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.
