Silicone Carbide Heater

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Subhot Industrial

Silicone Cardibe Heater

Silicon carbide heating elements are manufactured from recrystallized high purity alpha sllicon carbide rod or tubular form. Optimized structure of SIC particles make It have special characteristics as applied in industry and lab, which have the best service life particularly in oxidation and/or corrosive atmospheres. SiC Heating elements may be mounted either vertically or horizontally at the max. operation temperature 1600 without any special supports, the elements will not deform. This provides a flexible furnace design for maximum Interior design. Another feature is that elements can be replaced when the furnace is in continuous operatlon, thus avolding a shutdown. Its high loading capacity is suitable for low-volume and high power conditions. Therefore, it is widely used in various high temperature electric furnaces and other electric heating devices, such as industrial applications involving magnetic, ceramics, powder metallurgy, glass, metallurgy and machinery


Type of SIC Heating Elements

Heating elements has type of DH type (equal diameter with higher resistances), DL type (equal diameter with lower resistances), U type, CU type, M type (door shape), W type (three phase), SG (single spiral), SGR (double spiral), UX type (slot shape), DB type (dumbbell shape), etc. The rods diameter range from 8mm to 54mm, longest 4300mm, but for SG and SGR type, the max diameter and length is 75mm and 1000m

> DH & DL TYPE
  • • Type ( Hotbar DH/DL)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm (CZ)
  • • Overall length, mm (OL)

> DH & DL TYPE
  • • Type( Hotbar M)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm (CZ)

> U & CU TYPE
  • • Type ( Hotbar U/CU)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm
  • • (CZ) Leg center distance, mm (A)
  • • Connection bridge, mm (D)

> SG TYPE
  • • Type (Hotbar DH/DL)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm (CZ)
  • • Overall length, mm (OL)
> W TYPE
  • • Type ( Hotbar U/CU)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm
  • • (CZ) Leg center distance, mm (A)
  • • Connection bridge, mm (D)

> DB TYPE
  • • Type (Hotbar DB)
  • • Hot zone diameter, mm (D1)
  • • Cold end diameter, mm (D2)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm (CZ)

> DB TYPE
  • • Type (Hotbar SGR/UX)
  • • Diameter, mm (OD)
  • • Hot zone length, mm (HZ)
  • • Cold end length, mm (CZ)
  • • Overall length, mm (OL)

Chemical properties

The elements begin to oxidize when heated up to 800 in air, a SiO2 protective film forms on the surface of the hot zone when the temperature reaches 1000~1300 ; Cristobalite will be crystallized at 1300; The protective film gets to a certain thickness at 1500which makes the elements oxidation speed very slowly. If heating exceeds 1627, the protective film will be destroyed and oxidation will become more rapid and will make the element fail prematurely

Even though the element oxidizes very slowly during operation, it also causes the resistivity of the element to change as it ages. To retard the aging speed, for certain atmospheric conditions, we can provide different protection coats which will improve the service life of the elements.

Advantages :

  • 1. Withstands as high as 1500 (surface temperature).
  • 2. Generates high heat output per unit surface area, approximately 5-10 times the output of Nichrome wire.
  • 3. High strength and excellent shock resistance.
  • 4. Heat source is free of noise and air pollution

Order Sample:

When you place order, please tell us following data:

  • 1. Outer diameter (OD)
  • 2. Length of Hot zone (HZ)
  • 3. Length of Overall (OL)
  • 4. Resistance (at 1050C +/-50C)

IFC-GD type elements are made from high-density, high-purity silicon carbide, which is the most popular type of economical heating element capable of operating under hot and rigorous environments.

Specification and Range of Resistance :

Diameter Length of hot zone Length of cold zone Overall length Range of 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 400-1200 0.7-5.6 ohms
16mm 200-600mm 200-350mm 600-1300 0.7-4.4 ohms
18mm 200-800mm 200-400mm 600-1600 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