1.The General Description
The silicon carbide heating element is a kind of non-metal high temperature electric heating element. it is made of selected super quality green silicon carbide as main material, which is made into blank, silided under high temperature and re-crystallized. compared with metal electric heating element, this kind of element is characterized by high-applied temperature, anti-oxidization, anti-corrosion, long service life, little deformation ,easy installation and maintenance. Therefore ,it is widely used in various high temperature electric furnaces and other electric heating devices ,such as in the industries of magnet, ceramics, powder metallurgy, glass, metallurgy and machinery etc.
We adopt new production process of cold ends, so our SIC heating elements have excellent specific rate of heat zone resistance and cold end resistance, saving energy, long life ,avoiding over-temperature of cold ends to damage the furnace body .The commercial name of our SIC heating elements is Yuhao Silca heating elements.
2. The Species of Yuhao silca Heating Elements
1) ED(rod) type elements
Type: ED Outer diameter (OD): mm Overall length (OL): mm
Hot zone length( HZ): mm Cold end length (CZ): mm
Examples: ED Type,OD=54mm,HZ=1575mm,CZ=419mm,OL=2413mm ,Resistance 0.9?
Specify as: Yuhao silca ED,54/1575/2413/0.90?
2) U type elements
Type: U
Outer diameter (OD): mm Overall length( OL): mm Hot zone length ( HZ):mm Cold end length( CZ): mm Shank spacing (A): mm
Examples: U Type,OD=20mm,HZ=300mm,CZ=400mm,OL=700mm,A=60mm,Resistance2.24?
Specify as: Yuhao Silica U,20/300/700/60/2.24?
3) W (three phase) type elements
Type : W
Outer diameter (OD): mm Overall length( OL): mm Hot zone length ( HZ): mm
Cold end length( CZ): mm Shank spacing (A): mm
Examples: W Type,OD=20mm,HZ=250mm,CZ=350mm, OL=625mm,A=52mm,Resistance 0.9Ω
Specify as: Yuhao Silca W,20/250/625/52/0.9Ω
4) SC(single spiral)type elements
Type :SC Outer diameter (OD): mm Overall length( OL): mm
Hot zone length ( HZ): mm Cold end length( CZ): mm
Examples: SC Type, OD=25mm,HZ=300mm,CZ=200mm,OL=700mm,Resistance 1.59Ω
Specify as: Yuhao Silca SC,25/300/700/1.59Ω
5)SCR (double spiral) type elements
Type :SCR Outer diameter (OD): mm Overall length( OL): mm
Hot zone length ( HZ): mm Cold end length( CZ): mm
Examples: SCR Type, OD=31.7mm,HZ=305mm,CZ=241mm, OL=546mm,Resistance 4.46Ω
Specify as: Yuhao Silca SCR,31.7/305/546/4.46Ω
6)UX (slot) type elements
Type:UX Outer diameter (OD): mm Overall length( OL): mm
Hot zone length ( HZ): mm Cold end length( CZ): mm
Examples: UX Type, OD=30mm,HZ=400mm,CZ=300mm,OL=700mm, Resistance 2.76Ω
Specify as: Yuhao Silca UX,30/400/700/2.76Ω
3.Physical Property of Elements
The linear expansion coefficient,heat conductivity and specific heat of element will change along with temperature change .And the relational data are the follows:
|
Temperature
(℃)
|
linearexpansioncoefficient(10-6m/℃)
|
Heatconductivity(Kcal/M hr ℃)
|
specific heat(cal.g℃)
|
|
0
|
/
|
/
|
0.148
|
|
300
|
3.8
|
/
|
/
|
|
400
|
/
|
/
|
0.255
|
|
600
|
4.3
|
14-18
|
/
|
|
800
|
/
|
/
|
0.294
|
|
900
|
4.5
|
/
|
/
|
|
1100
|
/
|
12-16
|
/
|
|
1200
|
4.8
|
/
|
0.325
|
|
1300
|
/
|
10-14
|
/
|
|
1500
|
5.2
|
/
|
/
|
|
specific gravity
|
2.6～2.8g/cm3
|
Bend strength
|
>300kg
|
|
Hardness
|
>9MOH’S
|
Tensile strength
|
>150Kg.cm3
|
|
Porosity rate
|
<30%
|
Radiancy
|
0.85
|
Look forward to your enqury!