Active Member
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Contact name:
Ningbo Forda Pipe Sealing Technology Co.,Ltd |
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Descrition:
Ceramic tube guides: The product is used for coiling machine and
spinning and weaving fault silk location in mechanizing, is fault
silk another piece in common use.
Ceramic tube and ceramic rod products are used in high-temperature
applications that require erosion resistance and electrical or
thermal insulation. Like other ceramic products, ceramic tubes and
rods consist of oxides, carbides, nitrides, carbon, and other
non-metals with high melting points. These refractories are hard,
heat-resistant materials and products such as alumina cement, fire
clay, bricks, and precast shapes. Some examples of ceramic tube and
ceramic rod products are precast tubes, ladle impact pads, damns
and weirs, impact runners, troughs, covers, furnace roofs, and
skimmer paddles.
Many different materials are used in ceramic tube and ceramic rod
products. Alumina, a compound of aluminum metal and oxygen, is used
in refractory tubes, industrial crucibles, analytical labware,
dielectric substrates, wear components, refractory cements, and
abrasives. Depending on its purity, density and crystal structure,
carbon is used for refractory linings, industrial crucibles, arc
furnace electrodes, analytical labware, composites, refractory
cements and superabrasives. Ferrites, garnets, and ferromagnetic
materials have dielectric and magnetic properties that are useful
in RF, microwave, and specialized industrial applications. Sapphire
ceramics are used in lasers, substrates, jewel bearings, watch
crystals, and other specialized optical, wear, and electronic
applications.
Ceramic tube and ceramic rod products are available in a variety of
shapes and types. Recuperator tubes are cross-shaped ceramic
components that recover heat from combusted gases. Degassers are
sometimes porous and bar stock usually has a square cross-section.
Immersion tubes protect heating elements, burners, and other
devices in high temperature furnaces from immersion in molten
metal, glass, or other melted materials. Muffle or furnace tubes
form a barrier between the heating elements and heated parts in a
furnace.
Application
These precision toleranced ceramic components or assemblies are used in a wide range of semiconductor, electronic, electrical, mechanical, chemical, automotive, textile and the other industrial engineering applications, due to their extreme hardness, more resistances to wear, heat, corrosion, high electric insulation, and low thermal expansion. Specification
Physical Properties
Project | Test the condition | Unit | 99 porcelain | 95 porcelain | Talc porcelain | |
Backbone |
|
| 99%AL 2 O 3 | 95%AL 2 O 3 | MgO.SiO2 | |
Physical property | Density of volume | Normal atmospheric temperature | g/cm 3 | 3.8 | 3.6 | 2.8 |
Airtight | Normal atmospheric temperature |
| Pass | Pass | — | |
Absorbing water rate | Normal atmospheric temperature | % | 0 | 0 | 0 | |
Temperature that frit |
| °C | 1800 | 1650 | 1350 | |
Mechanical performance | Rockwell hardness | Normal atmospheric temperature | HRA | 88 | 86 | 76 |
Resist the intensity of turning back | Normal atmospheric temperature | Mpa | 350 | 320 | 150 | |
Compression strength | Normal atmospheric temperature | Mpa | 1300 | 1200 | 900 | |
Hot performance | Use temperature at most |
| °C | 1700 | 1600 | 1200 |
Heat resistant shaking | 20O°C-1100O°C | 10Num | Pass | Pass | Pass | |
Hot coefficient of expansion | 20O°C-80O°C | ×10 -6 mm/°C | 6.5-8.5 | 6.5-8.0 | 5.0-6.2 | |
Heat-conduction rate | 25°C | W/m.k | 29 | 25 | 2.9 | |
300°C | W/m.k | 18 | 13 | 2 | ||
Dielectric constant | The medium lossing | 1MHz2O°C | ×10 -4 | ≤2.5 | ≤4 | ≤8.0 |
The angle tangent is worth | 1MHz8O°C | ×10 -4 | ≤3.5 | ≤4.2 | — | |
Dielectric strength | Normal atmospheric temperature | KV/mm | 15 | 16 | 20 | |
Dielectric constant | 1MHz2O°C |
| 9-10.5 | 9-10 | ≤7.5 | |
Resistivity of volume | 2O°C | Ω.cm | >10 12 | >10 12 | >10 13 | |
10O°C | Ω.cm | 10 12 -10 13 | 10 12 -10 13 | 10 10 -10 11 | ||
30O°C | Ω.cm | >10 12 | 3.1×10 9 | 5×10 8 | ||
Competitive Advantage:
Competitive price, good quality
