1.gas tube heater 2.up to 1700 celsius 3.rod,u,w,h,gun,spiral,dumbbell,door shape 4.accurate resistance 5.ISO 9001
alibaba best selling straight rod type silicon carbide gas tube heater
1.The General Description of silicon carbide heating element
1)production process:made into blank,silicided under high temperature and re-crystallized.
2)character: high-applied temperature ,anti-oxidization ,anti-corrosion ,long service life ,little deformation,easy installation and maintenance.
3)usage: used in various high temperature electric furnaces and other electric heating devices,such as in the industries of magnet,ceramics,metallurgy ,glass,and machinery.
4) physical properties of sic heating element
5)Recommend surface load
6)Technical parameter of rod type silicon carbide heating element
OD (Diameter) | HZ (Hot Zone) | CZ (Cold Zone) | OL (Total Length) | Resistance |
8mm | 100-300mm | 60-200mm | 240-700mm | 2.1-8.6 ohms |
12mm | 100-400mm | 100-350mm | 300-1100mm | 0.8-5.8 ohms |
14mm | 100-500mm | 150-350mm | 400-1200mm | 0.7-5.6 ohms |
16mm | 200-600mm | 200-350mm | 600-1300mm | 0.7-4.4 ohms |
18mm | 200-800mm | 200-400mm | 600-1600mm | 0.7-5.8 ohms |
20mm | 200-800mm | 250-600mm | 700-2000mm | 0.6-6.0 ohms |
25mm | 200-1200mm | 250-700mm | 700-2600mm | 0.4-5.0 ohms |
30mm | 300-2000mm | 250-800mm | 800-3600mm | 0.4-4.0 ohms |
35mm | 400-2000mm | 250-800mm | 900-3600mm | 0.5-3.6 ohms |
40mm | 500-2700mm | 250-800mm | 1000-4300mm | 0.5-3.4 ohms |
45mm | 500-3000mm | 250-750mm | 1000-4500mm | 0.3-3.0 ohms |
50mm | 600-2500mm | 300-750mm | 1200-4000mm | 0.3-2.5 ohms |
54mm | 600-2500mm | 300-750mm | 1200-4000mm | 0.3-3.0 ohms |
2.Electric property of silicon carbide heating element
Sic heating elementshave 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 key factor to the optimum service life of the element is to select the surface load of the element correctly according to the furnace construction,atmosphere and temperature.The figure shows the relation between furnace temperatures,element temperature and element surface load under the condition that the element radiation is not obstructed.
3. Advices of using silicon carbide 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.
4.When you place order,pls tell us following data
1)Outer diameter(OD):mm
2)Length of Hot zone(HZ):mm
3)Length of Cold end(CZ):mm
4)Length of Overall(OL):mm
5)Shank spacing(A):mm
6)Resistance(at 1050C+/-50C)
More than 20 years production experience.
Up to 1700 celsius high temperature.
All the resistance of sic heating element are tested twice to make sure the resistance is accurate.
All the specifications can be made according to your request.
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alibaba best selling straight rod type silicon carbide gas tube heater
