Sic Heater Silicon Carbide Element for Furnace Part

• Certification: Factory Test
• Type: Sic Heater
• Material: Silicon Carbide
• Model NO.: JX0001
• Form: Tube
• Shape: Tube
• Install: Easy
• Price: Lower
• Quality: Better
• Service: Super
• Transport Package: Polywood Case
• Specification: dia 8~60
• Trademark: JIAXIN
• Origin: China
• Production Capacity: 5000000
• Package Size: 130.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 40.000kg

Product Description

Silicon Carbide Heating Element

Product Description

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.
Advantage
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.
Application
It is widely used in various high temperature electric furnacesand other electric heating devices, such as in the industries of magnet, ceramics, powder metallurgy, glass, metallurgy and machinery, etc.
Our Feature
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.

Specs and type of silca heating elements

ED (rod)type element


U type element


W(three phase type element
 

Product Parameters

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

The linear expansion coefficient, heat conductivity and specific heat of element will change along with temperature change. And the relational data are the follows: 

Chemistry Property

1.Antioxidation Property of Elements
The element start to being oxidized when heat to 800°C in air, and a SiO 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
SIC heating elements 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. 

Ruglar size of the SiC Heating elements, special ones better with drawings:

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

 

Detailed Photos