Jinghui Industry Limited
Jinghui Industry Limited
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Ceramic slit guides are made of high aluminum oxides, or zirconium oxide ceramics. Both technical ceramics have superb high hardness, wear-resistance, and low friction coefficient because of their special microstructure after high-temperature sintering.
In order to cater to different cost needs, the polishing grade is to be classified to coarse polishing ( better than Ra0.8), fine polishing (better than Ra0.4) and diamond polishing (Better than Ra0.2). In the meantime, there are both sides diamond polishing and single side diamond polishing.
We offer a number of ceramic yarn guides for thread guides, yarn forming, and yarn modification via different shaping methods in different technical raw materials as per customers' needs.
All these ceramic yarn guides are designed for use in processes at low yarn tensions with no damage. It helps decrease and maintain times and improve production efficiency greatly.
1. Lowest possible yarn breakage rate with low yarn tensions
2. Highest yarn cleanliness without any fault silk occasion
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. All materials of ceramic yarn guides comply with RoHS, REACH regulation completely
1. Dimensions: max. size can be 100mm
2. Optional raw materials: zirconia(ZrO2),high purity alumina(Al2o3),titania(TiO2), High frequency ceramics
3. Another type of products: traverse guides, pigtails, eyelets, jet plates, dog tails, air nozzles, ceramic rod and so on
4. Tolerance: general tolerance ± 1% of the dimensions, or better via a secondary precision process
5. Surface finish: with different grade surface finish, such as Ra0.8 (coarse polish), Ra0.4 (fine polish), Ra0.2 (diamond polish)
| 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 |