Highly Polished 95% Aluminum Oxide Ceramic Eyelets For Textile Industry
1. Description
Alumina Ceramic eye is applicable for wire or silk rolling of various winding machines and textile machinery. It is made of precise ceramic and polished up to Ra0.2, high hardness and smooth surface enable the enameled wire free from hurt during surface sliding.
The ceramic eyelet is used to set less (friction is also less) location of pressure right. For cost reduction , according to using a request, smoothness polishing handicraft is allotted being (0.8 throw Ra) roughly , is throw (Ra accurate 0.4), surpasses essence throwing (Ra0.2). Be that single face is super-accurate at the same time mark throw and two-sided super-accurate throw. Specification of china eye many, select and use specification listing in common use in support a customer the day after tomorrow now, also may demand making to order according to the customer.
2.Features
1.Use temperatures up to 2400°
2. High density
3. High hardness
4. Low thermal conductivity
5. Chemical inertness
6. Resistance to molten metals
7. Good Wear resistance
8. High fracture toughness
3.Performance For Alumina ceramic
| Item | Test Condition | Unit Symbol | 95%Alumina ceramics | 99%Alumina ceramics | 99.6%Alumina ceramics |
| The main chemical ingredient | | | Al2O3 | Al2O3 | Al2O3 |
| Bulk Density | | g/cm3 | 3.6 | 3.89 | 3.96 |
| Maximum Use Temperature | | | 1450°C | 1600°C | 1650°C |
| Water absorption | | % | 0 | 0 | 0 |
| ROHS Hardness | | | ≥85 | ≥89 | ≥89 |
| Flexural strength | 20° C | MPa (psi x 103) | 358 (52) | 550 | 550 |
| Compressive Strength | 20° C | MPa (psi x 103) | 2068 (300) | 2600(377) | 2600(377) |
| Fracture Toughness | K(I c) | Mpa m1/2 | 4-5 | 5.6 | 6 |
| Coefficient of thermal expansion | 25-1000° C | 1X 10-6/°C | 7.6 | 7.9 | 8.2 |
| Coefficient of thermal conductivity | 20° C | W/m °K | 16 | 30.0 | 30.4 |
| Thermal Shock Resistance | Tc | °C | 250 | 200 | 200 |
We can supply the products according to customer's drawings, samples and performance requirement.
