1400c 1500c 1600c Electric Resistance High Temperature Double Spiral Type Silicon Carbide Sic Heater Heating Element for Furnace

Product Description

Product Description

Silicon carbide (SiC)  heating element/heater is made from quality green SiC powder, which was also added some additives according to the materials proportion. SiC heating elements are non-metallic products, they have a series of characteristics, such as higher temperature, antioxidation, anticorrosion, increase temperature fast, low coefficient of thermal expansion and so on. Therefore, they are widely used in various kinds of furnace with temperature 600C to 1600C. The max temperature can up to 1650⁰C . Silicon carbon heating elements have all kinds of specifications , super quality and lower price .our products have been well recognized in China . We are gaining market share overseas, such as USA , German ,france , Ialy ,Russia ,South  Korea , India ,Pakistan , brasil etc.
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.
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.

Detailed Photos

Product Parameters

Silicon carbide (SiC)  heating element/heater:

Diameter	Heating zone	Cold zone	Overall length	Range of resistance
	Length	Length
8mm	100-300mm	60-200mm	240-700mm	2.1-8.6 ohms
10mm	100-300mm	60-300mm	240-900mm	0.8-7.0 ohms
12mm	100-500mm	150-350mm	400-1200mm	0.7-5.6 ohms
14mm	100-500mm	150-350mm	400-1200mm	0.7-5.6 ohms
16mm	200-600mm	150-350mm	500-1600mm	0.7-4.4 ohms
18mm	200-800mm	150-400mm	500-1600mm	0.7-5.8 ohms
20mm	200-800mm	200-600mm	600-2000mm	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
60mm	600-2500mm	300-750mm	1200-4000mm	0.3-3.0 ohms

Physical Property

Specific Gravity	2.6~2.8g/cm3	Bend Strength	>300kg
Hardness	>9MOH'S	Tensile Strength	>150Kg.cm3
Porosity Rate	<30%	Radiancy	0.85

 

Chemistry Property

1.Antioxidation Property of Elements

The element start to being oxidized when heat to 800°C in air, and a SiO₂ protect film will be generated in surface of hot zone when temperature get to 1000-1300°C ; cristobalite will be crystallized at 1300°C; the protect film get to a certain thickness when the temperature get go 1500°C which make the oxidation speed being very slowly to stable. if continue to heat to over 1627°C ,the protect film will be damaged and oxidation speed will be more rapid evidently and make the element damaged earlier.
Thought the element will be oxidized very slowly in course of application, it also will make the resistance increased following long time application, this phenonenon calls ageing , in order to lower the ageing speed, we use special technology to spread a protect film on the surface of hot zone in the course of production, which enhance the antioxidant property of element evidently and lengthen the service life.

2.The effects of alkali and alkaline metal oxide to elements.
The alkali and alkaline metal oxide will react with SiC at about 1300°C and generate silicate, which calls alkali-chemical corrosion, and can influence the glowing of element. 

3.The effects to elements from melting metal
Some metals ,such as cobalt, nickel, chrome and so on, can corrade the element in high temperature melting state and affect the service life of element.

Electric Property
Silicon carbide (SiC)  heating element/heater has rather large specific resistance , when it is heated in air and the surface temperature of the hot zone reaches 1050ºC, it's resistance rate is 600-1400 mm2/mm (square millimetre , its resistance value changes as the temperature rises. From room-temperature to 800ºC is negative value , over 800ºC is positive value nature curve. 

How to order

When you place order, plz inform us below data:

1. Choose the shape you need, like GC, GD, SCR, SGR, Dumbbell, U, UL, H, W, Spiral etc.

2. Out Diameter : OD, mm 

3. Heating Zone Lengh : HZ, mm

4. Overall Length : OL, mm

5. Shank Space: A, mm

6. Resistance you need.

Order Sample: GD type, OD30mm, HZ300mm, OL800mm, Resistance 1.4ohms.

Application

Silicon carbide (SiC)  heating element can be used in the furnace temperature 600C-1600C, directly in the air use as well, and it need not any protective atmosphere. Because of SiC heating elements well performance, they are widely used in high temperature furnace, ceramics, glass, analysis and test, semiconductor, science research.. etc

Installation Instructions:

Notice for using and installing SIC heater:
1. Be protected against damp during storing or installing to ensure the performance ;
2. Divided before assembling. The tolerance of the resistance of each one cannot exceed by 10% each other;
3. Be careful when using and maintaining;
4. When operating the electric furnace at the beginning, the voltage should be increased slowly and cannot be fully loaded at once. Otherwise the larger current will be resulted in the damage of heater. 
5. When heater is damaged and need to be changed, the resistance of new ne should follow the increasing resistance. If many are damaged or resistance increased too much, heater should be changed.

Pre-factory Testing

Our Advantages

1. We provide special designed Silicon carbide (SiC) heating element according to customer needs, enabling an optimized element design for each particular application.  

2. Delivery time: 7days after receipt deposit.

3. Package: Synthetic Wooden Box with Cardboard Box and sponge
    We also received OEM service; the package can be designed according to your requirements.

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