Jinghui Industry Limited
Jinghui Industry Limited
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Specification of ceramic wire guides:
1. Raw material option: high purity aluminum oxide ceramics, zirconium oxide, titanium oxide
2. Dimensions: min. diameter can be 2mm, max. diameter can be 50mm
3. Type of products: eyelets, bushings, friction discs, pigtails, dog tails, air nozzles and so on
4. Tolerance: general tolerance ± 1% of the dimensions, or better via a precision process
5. Surface finish: mirror surface, better than Ra0.1 at working contact surface
1. Superb hardness and wear resistance greater than metal ones
2. Excellent mechanical strength, fracture toughness and bending strength
3. Good insulation, free of static electricity, resistant magnetic
3. Corrosion resistance in harsh working conditions
4. Excellent thermal shock resistance and good thermal stability
5. Nox-toxic, healthy material, eco-friendly material
6. Meet with RoHS, REACH regulation completely
Along with the development of technology, due to ceramics have unique excellent properties in some aspects or in certain industries, especially technical ceramics (or advanced ceramics) that have been further improved are used in a large number of fields. Technical ceramics such as alumina, zirconia, or titania ceramics have a better hardness and wear resistance than metals, so they are widely used in industrial textile machinery and equipment. we call it as textile ceramics.
Textile ceramics have excellent abrasion resistance, high hardness, a more smooth working surface, and low porosity. These outstanding characteristics greatly help the textile machinery to extend their service life, improve production efficiency, and decrease the breakage of yarn, thread, and wire in the productions.
The main type of textile ceramic spare parts includes ceramic eyelet guides, ceramic roller, traverse guide, ceramic pigtail guide, air-jet nozzle, friction disc, and so on. These textile ceramic parts can be made of the high purity of alumina, zirconia, and titania ceramics.
| Property | Units | 95% alumina | 99% alumina | 99.5% alumina | Zirconia | Titania |
| Color | White, pink | White, pink, ivory | Pink, ivory, white | White, yellow | Black, gray, yellow | |
| Density | g/cm3 | ≥3.60 | ≥3.80 | ≥3.85 | ≥6.0 | ≥4.0 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1500 | 1700 | 1700 | 1300 | 800 |
| Flexural strength | Mpa | ≥320 | ≥338 | ≥379 | ≥1200 | ≥158 |
| Compressive strength | Mpa | ≥2000 | ≥2240 | ≥2240 | ≥1990 | |
| Fracture toughness | Mpa m1/2 | 3-4 | 4-5 | 4-5 | 6.5-8 | 3.2 |
| Thermal Expansion Coefficient(20-800℃) | 1×10 -6 /℃ | 5.0~8.0 | 6.2~8.0 | 6.5~8.0 | 8.0~9.5 | 8.8 |
| Thermal conductivity | W/m.k (25℃) | ≥220 | ≥200 | ≥250 | ≥300 | ≥330 |
| Max. service temperature | ℃ | 1500 | 1600 | 1675 | 1000 | 1000 |
| Insulation strength | KV/mm | 18 | 18 | 19 | 17 | 3.93 |
| Dielectric constant (1Mhz) | (E) | 9.5 | 9.5 | 9.7 | 29 | 85 |
