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.
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:
About Us
1. Our company is a high & new technology enterprise specially engaged in developing, manufacturing and selling SiC (silicon carbide) heating elements and Molybdenum disilicide (Mosi2) heating elements and silicon carbide protective pipes
2. It established in the year 2007, with more than 16 years experience for produciton.
3. Products are exported to USA, Germany, France, Poland, Spain,Turkey, Russia, Ukraine, Japan, Korea, Singapore, Vietnam, Thailand and Iran, etc.. They are highly approved by our customers all over the world.
FAQ:
(1) Can you give me a discount price?
Answer: It is depending on the volume. The larger the volume is, the more discount you can enjoy.
(2) Why is your price a bit higher than other Chinese suppliers?
Answer: To meet the requirement of different customers and areas, our factory manufactures various kinds of quality for each item at a wide range of price. We can offer the products of different quality levels depending on customer's target price and quality requirement.
(3) How can I get a sample?
Answer: Normally small samples can be sent free of charge and customers just need to bear the shipping charge, or you can provide your DHL,FEDEX,EMS,UPS courier account number to us. For bigger sizes, it depends.
(4) How can you guarantee the quality of mass production is same with the sample sent to me before?
Answer: Our warehouse staff will leave another same sample in our company, with your company name marked on it, which our production will be based on.
(5) How can you deal with quality issues that customer feedback after receiving the goods?
