Sic heating element,silicon carbide heating element,sic heater,silicon carbide heater,silicon carbide rod, silicon carbide heating rod, sic silicon carbide heater.

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.

Specs and type of silca heating elements

ED （rod）type element

Advantage

Silicon carbide heating element is a time trusted heating element. It has the advantages of small hot-end resistance, long service life, 

and energy saving.Silicon Carbide heating elements are available in eight different basic configurations that extend heater life especially 

in corrosive environments.

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.

Physical Property

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

SIC heating elements has rather large specific resistance , when it is heated in air and the surface temperature of the hot zone reaches 1050℃, it's resistance rate is 

600-1400 mm2/mm (square millimetre , its resistance value changes as the temperature rises. From room-temperature to 800℃ is negative value , over 800℃ 

is positive value nature curve.

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

FAQ:

How to choose power supply equipment?

Power supply equipment should be selected with a large regulating range voltage and it is a stable and continuous voltage

 regulating equipment, such as magnetic voltage regulator, silicon controlled DC voltage regulator, etc. If you choose a stage

 voltage regulator transformer, you should also choose a transformer with a small voltage difference.

What are the connection of silicon carbide rods？

The connection mode of silicon carbon rod element can be series or parallel, and parallel is the best. When used in series, 

the number of branches in series should not be more than 3.