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[China]
Trade Verify
Address: Chuanbu Village,Ceramics Industrial Park,Dingshu Town,Yixingcity,China
Contact name:Selena
yixing haiyu refractory co.,ltd |
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alumina ceramic parts support customization 95% AL2O3 high accuracy various electronic accessories
product name:Alumina ceramic accessories
Alumina ceramics have excellent high temperature properties and
high mechanical strength, and are widely used in many industrial
fields such as metallurgy, machinery, chemical industry,
electronics, aviation and national defense. Its main purposes are
as follows :
1. Alumina ceramic has high temperature resistance, corrosion
resistance, high strength and other properties, so it is used as a
sliding nozzle to smelt rare and precious metals, special alloys,
high-purity metals, glass drawing crucibles and vessels. Various
high-temperature furnaces, such as refractory materials, ceramics,
iron-making blast furnace lining ( walls and tubes ) ;
physicochemical vessels, spark plugs, heat-resistant and
anti-oxidation coatings. The low silicon sintered corundum brick
with SiO2 less than 0.5 % is the special lining for carbon black,
boron chemical industry, chemical fertilizer, ammonia synthesis
reaction furnace and gasification furnace.
2. At the same time, the alumina ceramic has the characteristics of
high hardness, good wear resistance and high strength. It is used
as a variety of reaction vessels and pipes, chemical pump
components in the chemical system. For mechanical parts, a variety
of molds, such as wire drawing die, extrusion pencil die mouth,
etc. ; for cutting tools, abrasives, bulletproof materials, human
joints, sealed grinding rings, etc. ;
3, and there is high temperature insulation, so it is used as a
thermocouple sleeve tube and protection tube, the insulation used
in the atomic reactor is still excellent, coupled with the loss is
not large, the dielectric constant is not large, in the electronics
industry is widely used in solid integrated electric furnace
substrate tube seat, shell, porcelain frame, thin window, missile
radar antenna protective cover, etc. ;
products index:
| Ceramic characteristic table | |||
| name | 99% AL2O3 | 95% AL2O3 | |
| physical propertyessential component | essential component | AL2O3≥99% | AL2O3≥95% |
| Density(g/cm3) | 3.85 | 3.6 | |
| water absorption% | 0 | 0 | |
| sintering temperature | 1690 | 1670 | |
| material characters | Hardness(HV) | 1700 | 1600 |
| break off strength | >6500 | >2900 | |
| compressive strength | 30000 | 25000 | |
| thermal response | maximum service tempera- ture | 1500 | 1400 |
| thermal expansion coefficient | 8 | 7.8 | |
| 10-6/℃ | |||
| 0-1000℃ | |||
| Heat shock resistance T(℃) | 200 | 220 | |
| thermal conductivity W/m.k | 31 | 22 | |
| electrical specification | volume resistivity Ω.cm | >1012 | >1012 |
| Insulation destructive power KT/m | 18 | 16 | |
| dielectric constant 1MHZ(E) | 9.2-10.5 | 9.0-10 | |
Company Workshop production steps:
