Home > Technology Data >
The physical and chemical properties of silicon carbide electric heating element

作者:本站原创      发布日期:2015-01-29      

 

The physical and chemical properties of silicon carbide electric heating element

Silicon carbide electric heating element uses high purity green six-party silicon carbide as the main raw material and adopts unique high temperature sintering technology to make it recrystallization to get non-metal silicon carbide products. Its highest temperature of surface heat can reach 1450 . It is durable high quality environmental protection products with high infrared emissivity, high mechanical strength, strong vibration resistance, good chemical stability, and easy installation etc. To meet the needs of different customers, our company has products with different specification, such as equal diameter rod, u-shaped rods, rods, five stick, three-phase rods, single threaded rods, 12 -, double screw rods is Ф Ф 60. It’s widely used in high temperature furnace and other electric heating devices of magnetic material, powder metallurgy, electronic ceramics, glass, aluminum smelting, refractory materials industries.

 

 Physical Characteristics

 

 ITEM

UNIT

 INDEX

 

Chemical components

 

Content of SiC

%

≥90

 

physical performance

 

maximum service temperature

ºC

1450

refractoriness

SK

≥39

T2 refractoriness under load

 

ºC

≥1750

 

Bending Strength

Mpa at 25

≥45

 

high temperature bending strength

 

Kg/cm2

≥550

 Compressive strength

Mpa

≥140

thermal expansivity

1000 ( × 10-6/ )

0.42-0.48

porosity

%

6-8

The proportion of performance

g/cm3

2.4-2.75

 Thermal conductivity

W/m + at 1000

14-18

  

Resistance, temperature characteristic (see photo)

Between 0-700 , resistance value decrease with the temperature raise. Above 700 , resistance value raises with the temperature rises. Standard resistance value is tested under 1000 in air, which is different from the resistance value tested in normal temperature, please notice.

 

The physical and chemical properties of silicon carbide electric heating element

 

 

 

Relations