Active Member
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[China]
Address: 8th Building, Futing Industrial Park, Zhu village, Guanlan, Longhua, Shenzhen, China
Contact name:Andy Chen
Jinghui Industry Limited |
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Description of ceramic thread guides:
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.
Specification of ceramic thread 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
Main features of ceramic thread guides:
1. Exceptional wear resistance and hardness better than metal ones
2. Good insulation, free of static electricity, resistant magnetic
3. Excellent mechanical strength, fracture toughness and bending strength
4. Corrosion resistance in harsh working conditions
5. Meet with RoHS, REACH regulation completely
| 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 |
