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INTRODUCTION:
ED SiC heating elements
silicon carbide SiC heating elementis a kind of nonmetal high temperature electric heating element.
It is made of selected super quality green silicon carbide as main material,which is made into blank,silicide under high temperature and re-crystallized. Max temperature 1600 deg C.
Heaters silicon carbide SiC heating element have rather large specific resistance. When it is heated in air and the surface temperature of the hot zone reaches 1050°C,it's resistance rate is 600-1400mm2/mm and its resistance value changes as the temperature rises which is negative value from room-temperature to 800 °C and is postive value nature over 800 °C .
The types of heater Silicon carbide SiC heating elements:
1) Main type :ED (straight ) ,DB (thin and thick ),SC(single thread),SCR(double thread ),U,W,UX .
2)We can provide the dimension as per your requirement .
Some specific:
Low expansion coefficient ,little deformation,stable chemical property, long service life ,easy installation and maintenance.
Physical properties of SiC heaters silicon carbide heating elements:
specific gravity
2.6~2.8g/cm³
bend strength
>300kg
hardness
>9 MOH′S
Tensile strength
>150kg/cm³
porosity rate
<30%
radiancy
0.85
Recommend surface load of heaters silicon carbide sic heating elements:
Furnace Temp (°c )
1100
1200
1300
1350
1400
1450
Surface load of hot zone (W/cm²)
<17
<13
<9
<7
<5
<4
Widely application :
It is extensively used in the fields of metallurgy ,ceramics, glass ,machinery,analysis test semiconductor science and research
Advices of using heaters silicon carbide sic heating element:
1) In order to keep furnace temperature and the charges uniform of each element, before installation resistance distribution must be carried.
2) As the element is very brittle, be careful while install and maintain to avoid any damage.
3) When start to operate the furnace, raise voltage slowly and gradually, never give full load at one time.
For example ED type silicon carbide SiC heating element
Dia(OD)
(mm)
Length of hot zone(HZ)(mm)
Length of cold zone(CZ)(mm)
Overall Length(OL)(mm)
Range of Resistance(Ω) (ohms)
8
100-300
60-200
240-700
2.1-8.6
12
100-400
100-350
300-1100
0.8-5.8
14
100-500
150-350
400-1200
0.7-5.6
16
200-600
200-350
600-1300
0.7-4.4
18
200-800
200-400
600-1600
0.7-5.8
20
200-800
250-600
700-2000
0.6-6.0
25
200-1200
250-700
700-2600
0.4-5.0
30
300-2000
250-800
800-3600
0.4-4.0
35
400-2000
250-800
900-3600
0.5-3.6
40
500-2700
250-800
1000-4300
0.5-3.4
45
500-3000
250-750
1000-4500
0.3-3.0
50
600-2500
300-750
1200-4000
0.3-2.5
54
600-2500
300-750
1200-4000
0.3-3.0
When you place an order of theED type heater silicon carbide SiC heating elements , please give following information:
OD: Outer Diameter;
HZ: Length Of Hot Zone;
CZ: Length Of Cold Zone;
OL: Overall Length,
Order Sample of the ED type Silicon carbide heating element /SiC heater
ED type : OD=20mm, HZ=250mm, CZ=350mm, OL=625mm, Resistance: 0.9Ω
Specify As:STA -ED type : 20/250/625/0.9Ω