Jinghui Industry Limited
Jinghui Industry Limited
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Main features of ceramic hook guides:
1. Highest yarn cleanliness without any snowflake occasion
2. Lowest possible yarn breakage rate with low yarn tensions
3. Long service life on both special yarns and raw materials with aggressive additives
4. Exceptional wear resistance and hardness better than metal ones
5. Excellent mechanical strength, fracture toughness and bending strength
6. Good insulation, free of static electricity, resistant magnetic
7. Superb thermal conductivity coefficient and thermal shock property
8. Corrosion resistance in harsh working conditions
9. Excellent thermal shock resistance and good thermal stability
10. Nox-toxic, healthy material, eco-friendly material
11. Meet with RoHS, REACH regulation completely
Specification of ceramic hook guides:
1. Dimensions: max. size can be 50mm
2. Very tight dimensional tolerance control
2. Optional raw materials: zirconia(ZrO2),high purity alumina(Al2o3),titania(TiO2)
3. Another type of products: traverse guides, pigtails, eyelets, jet plates, 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
Description of ceramic hook guides:
The ceramic hook guides are made of high-quality titania, alumina or zirconia, which are processed strictly according to the polishing process of the textile industry. In order to reduce the friction between the ceramic guide and yarn, the surface finish such as polishing and waxing is a must. We have been producing numerous ceramic yarn guides. Besides ceramic hook guides, we also produce ceramic eyelet guides, ceramic traverse guides, ceramic bushing guides, ceramic slit guides, ceramic pigtail guides and so on. These textile ceramic spare parts offer a series of advantages: excellent wear resistance, superb high hardness, great heat resistance, acid resistance, and low friction coefficient.
Whatever, it's prototyping with small lots or cost down needs for mass production, we could provide you an ideal solution.
| 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 |