Ceramic Mechanical Seal
Ceramic material refers to inorganic non-metallic materials made of natural or synthetic compounds through forming and sintering. It has the advantages of high melting point, high hardness, high wear resistance and oxidation resistance. It is widely used in machinery, chemical industry, petroleum, pharmaceutical, automobile and other fields. Because of its advantages, it has become Sealcon's great choice for sealing materials.
Mechanical characteristic
Ceramic material is the material with the best rigidity and highest hardness in engineering materials, and its hardness is mostly above 1500HV. Ceramics have high compressive strength, but low tensile strength, poor plasticity and toughness.
Thermal characteristic
Ceramic materials generally have high melting point (mostly above 2000), and have excellent chemical stability at high temperature. The thermal conductivity of ceramics is lower than that of metal materials. At the same time, the linear expansion coefficient of ceramics is lower than that of metal. When temperature changes, ceramics have good dimensional stability.
Electrical characteristic
Most ceramics have good electrical insulation, so a large amount of insulation is used to make all kinds of voltages (1kV~110kV). Ferroelectric ceramics barium titanate (BaTiO3) has high dielectric constant which can be used in the production of capacitor, ferroelectric ceramics. A few ceramics also have the characteristic of semiconductor, can be a rectifier.
Chemical characteristic
Ceramic material is not easy to be oxidized at high temperature, and has good corrosion resistance to acid, alkali and salt.
Optical characteristic
Ceramic materials also have unique optical properties, which can be used as solid laser materials, optical fiber materials, optical storage containers, etc. Transparent ceramics can be used in high-pressure sodium lamp tubes.Magnetic ceramics (ferrites such as MgFe2O4, CuFe2O4, Fe3O4) have a wide range of applications in recording tapes, records, transformer cores, and large computer memory components.
Mechanical seals has the high demands about sealing materials, so the ceramic is choosed to make ceramic seals for water pumps because of its competitive features.
|
ceramic physical property |
||||
|
Technical parameter |
unit |
95%Al2O3 |
99%Al2O3 |
99.5%Al2O3 |
|
content of Al2O3 |
% |
95 |
99 |
99.5 |
|
density |
g/cm3 |
3.7 |
3.88 |
3.9 |
|
hardness |
HRA |
85 |
88 |
90 |
|
porosity rate |
% |
0.4 |
0.2 |
0.15 |
|
fractural strength |
MPa |
250 |
310 |
350 |
|
coefficient of heat expansion |
10(-6)/K |
5.5 |
5.3 |
5.2 |
|
thermal conductivity |
W/M.K |
27.8 |
26.7 |
26 |
Tag: Mechanical Seals
Persona a contactar : Michael Yu, +86 571 86958675
Buen trato: comprar del vendedor
Por favor, lea nuestras condiciones de uso. También puede visitar nuestras preguntas frecuentes y ver nuestra información sobre los riesgos relacionados con la falsificación.
|
Esta página es acerca de los importadores y exportadores de Ceramic Mechanical Seal Buscar en la categoria : Bienes de equipo Buscar en la categoria : mechanical, seal, ceramic |
Thursday 10 April 2008
Nous proposons Polycarbonate(PC),Polymenthyl Metacrylate (PMMA),Acrylonitrile Butadiene Styrene(ABS) et High Impact Polystyerene(HIPS) en feuilles. Top qualitéUbicación : Piazza Vessella,3, 81011 ALIFE (CE), Persona a contactar : Hassan El azouzi, 00 39 347 998 64 61
ELMA di EL AZOUZI & C s.a.s
- elmaitaly
- 81011 - ALIFE (CE)
- 00 39 347 998 64 61
Friday 31 October 2014
Model Number: BLC201 led strip 1.waterproof ip67 2.factory direct sale 3.2years warranty 4.5000 hs lifespan high efficiency waterproof 60led/m bule led strip 3528 60led/m led strip led strip Product Description Product LED STRIP Model No. WHB3528-60-12V LED Source SMD3528...
Friday 12 August 2011
Cantidad : 1000000CAR - Precio : negotiable
WE ARE REPUTED DEALERS OF GEMSTONES AND DIAMONDS.WE HAVE ALL TYPES OF GEM THAT IS RANGING FROM AQUAMARINE TO PEARL GEMS.WE SUPPLY AT AFFORDABLE PRICES AND OUR GEMS ARE OF HIGH QUALITY AND MEETS UP TO 99% PURITY.IF INTERESTED IN BUYING YOUR GEMSTONES DO NOT HESITATE TO CONTACT USUbicación ...
ets.mankaa
- dunois
- - yaounde
- +23 7 96 18 29 09




