Silicon Carbide Heating Elements For Industrial Furnaces

Silicon carbide is an extremely resilient material which can withstand high temperatures without shattering or cracking, making them suitable for use in many industrial furnaces.

However, their lifespan is limited by how much power can be applied; their resistance changes with temperature and time.

Corrosion Resistant

Silicon carbide is an extremely hard crystalline compound of silicon and carbon that has long been utilized as an industrial material. From sandpaper to cutting tools, it is used in everything from tubular heating elements for industrial furnaces to pump parts, rocket engines and semiconducting substrates for light-emitting diodes.

Silicon carbide heating elements owe their longevity and energy efficiency to an effect known as “joule heating”. When an electrical current passes through an element, it heats up, warming the material around it as well. As more resistance develops with time, less electrical current needs to generate the same level of heat production; making silicon carbide heating elements very energy-efficient heating elements.

Good quality silicon carbide heating elements feature fixed current limits, meaning the current is limited by setting an upper maximum value. This enables the element to reach and sustain operating temperature with precision while eliminating overshooting that occurs with variable current control.

Molybdenum disilicide (MoSi2) and silicon carbide (SiC) make effective high-temperature electric heaters for use in various applications, depending on your particular requirements. MoSi2’s higher resistance to oxidation allows it to be used in oxygen rich environments up to 1600degC; on the other hand, SiC provides superior mechanical strength as well as thermal shock tolerance.

High Temperature

Silicon carbide heating elements have the ability to withstand higher temperatures than metallic ones, making them an excellent choice for applications requiring high-temperature conditions such as ceramic kilns and furnaces, metal heat treatment facilities, aerospace applications or metal heat treatments.

These resilient materials can withstand temperatures up to 1625 degC without melting or developing cracks, as well as chemicals and corrosive environments. Made from extremely hard and brittle refractory material, these durable long-term pieces provide long-term service.

Silicon carbide’s low thermal expansion coefficient enables it to withstand rapid temperature changes without deforming, making it an excellent choice for environments requiring stable structures in high-temperature conditions.

At higher temperatures, heating elements can become susceptible to oxidization, leading to more conductive material becoming exposed and increasing its electrical resistance. To counteract this effect, controlling their exposure temperature is important.

Silicon carbide heating elements come in various shapes and sizes to suit various equipment types and processes, from single rod designs to multi-leg designs that meet specific application requirements. Globar HD silicon carbide elements have been engineered to withstand even the toughest applications; featuring hot zones of recrystallized reaction-bonded silicon carbide designed to resist oxidation by process volatiles or reactive atmospheres as well as long span applications with heavy loads – perfect for long span applications!

High Resistance

Silicon carbide electric heaters outshone metal alternatives in many applications due to their superior resistance properties, making it a popular choice in high-temperature electric furnaces used for ceramics, glassware, assaying, metallurgy and machinery manufacturing. Other advantages over metal heaters include their higher operating temperature resistance; corrosion resistance; longevity benefits.

The EREMA element is a resistance type heating element designed to convert electrical energy into thermal energy via Joule’s Law (W=I2R). These elements feature a hot zone made up of recrystallized green alpha silicon carbide designed for maximum resistance against corrosion and oxidation in process gas environments. They come standard in standard sizes and geometries while custom designs can also be made available depending on specific process needs.

Silicon carbide, an extremely hard crystalline compound of silicon and carbon found naturally in rare minerals like moissanite, corundum and kimberlite, as well as produced synthetically in various grades doped with boron, phosphorus or aluminium is an extremely hard compound with outstanding thermal and mechanical properties, such as high sublimation temperatures for melting or sublimation and great thermal conductivity.

Silicon carbide heating elements deteriorate with use due to oxidation at grain boundary areas forming silica film that increases resistance, shortening their lifespan. To minimize oxidation, run them at lower loads than that marked on them and continuously. This may help.

Long Life

Silicon carbide heating elements are known to withstand extreme temperatures with little loss in performance over repeated use, in harsh environments and are corrosion resistant – qualities which make silicon carbide essential components in industrial and laboratory furnaces.

Silicon carbide elements have numerous applications, from metal heat treatment and ceramic production, through glass production and semiconductor fabrication. Silicon carbide comes in various shapes, sizes and geometries to meet the specific requirements of individual processes and equipment.

Environment factors also have an effect on how long elements last; water vapor, nitrogen oxides, hydrogen chloride, alkaline gases and metal oxides all corrode silicon carbide elements, decreasing their life span significantly. Ideally, elements should be placed in dry atmospheres for maximum longevity.

Regular inspection and maintenance can greatly extend the longevity of silicon carbide elements. Aluminium layers at both ends should be checked for signs of damage or degradation; tightness and alignment must also be checked. Furthermore, elements must be regularly examined for signs of oxidation, blackening, or cracks to ensure maximum life span and productivity.

The DM type silicon carbide heating element features two M14 threaded sections designed to be stressed together, helping reduce stress levels and extend its life. Furthermore, an M5 female threaded hole allows it to connect directly to customer power sources without risk of graphite exposure being exposed by direct power connections.