Alumina Al2O3 Ceramic Wire Guide/Ceramic Eyelets for Textile
Machinery
Description of ceramic eyelet(ceramic ring) :
The ceramic eyelet(ceramic ring) is the most commonly used
component for the
wire passing, and it is used in the wire passing position of the
coil winding machine
and the textile machinery. Normally it is used for less demanding
occasions. The
shape, finish and the hardness of materials must be improved in
order to reduce
the friction because of the wire sliding in the surface of the
ceramic rings. According
to the requirements, the polish degree of porcelain eye can be
regarded as
roughness polishing, precision polishing and ultra-precision
polishing.
Features of ceramic eyelet(ceramic ring) :
1.The inside surface polish degree : Ra0.2~0.8.
2.The material : 99% AI2O3 with density of 3.85.
3.The hardness : HRa88.
Materail : alumina ceramic (95 /99 alumina ceramic , steatite ceramics ,
zirconia ceramics are optional )
Excellent abrasion performance
long working life.
Exact surface finish can reach to 0.2 .
Thread is not damaged easily in the process of sliding .
We are a manufacture , we produce professional textile ceramic .
Product Description
Material Parameters
| Item | Testing condition | Unit | 95% al2o3 | 99% al2o3 | 99% al2o3 | 99.5% al2o3 | zirconia |
| Bulk density | | g/cm3 | >3.60 | 3.7 | 3.7 | 3.7 | 6 |
| Flexural Strength | | N/m2×103 | 2.24 | >2.24 | >2.24 | >2.74 | 11 |
| Coefficient of linear expansion | 20~800°C | ×10-6/°C | 6.5~8.0 | 6.5~8.0 | 6.5~8.0 | 6.5~8.0 | 9.5 |
| Permittivity | 1MHz | | 9~10 | 9~10.5 | 9~10.5 | 9~10.5 | / |
| 10GHz | | 9~10 | 9~10.5 | 9~10.5 | / | / |
| Insertion loss | 1MHz | ×10-6 | ≤4 | ≤2.5 | ≤2.5 | ≤1.5 | / |
| 10GHz | ×10-6 | ≤10 | ≤6 | ≤6 | / | / |
| Bulk density resistance | 100°C | Ω·Cm | >1013 | >1013 | >1013 | >1014 | >1012 |
| Puncture strength | | KV/mm | 15 | 15 | 15 | / | / |
| Thermal conductivity | 20°C | W/m·k | 25.2 | 25.2 | 25.2 | 29.2 | 3 |
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
15-20 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, 30%
T/T in advance ,balance before shippment.
If you have any other question, pls feel free to contact us .
