When it comes to high temperature furnace elements used in oxidizing environments, molydisilicide heating elements are the go-to choice.
4 Key Points About High Temperature Furnace Elements in Oxidizing Environments
1. Molydisilicide Heating Elements
Molydisilicide heating elements are commonly employed in oxidizing environments.
These elements are ideal for such environments because they can quickly attain and sustain high temperatures.
They also have a natural affinity for oxidizing atmospheres.
2. Composition and Operation
Molydisilicide heating elements consist of a molybdenum core coated with quartz glass.
This design allows them to operate effectively in air, which is an oxidizing environment.
As the elements heat up, they become nearly liquid as they approach their maximum temperature.
The maximum temperature is typically 100°C higher than the maximum rated furnace temperature.
The glass surface of the element reacts with the oxygen in the air to form a renewed coating of protective glass on the element surface.
This helps in maintaining the integrity and functionality of the element.
3. Operational Considerations
These elements are designed for maximum operating temperatures in the range of 1500-1800°C.
They are used in furnaces that operate in air.
For operations in inert atmospheres, adjustments are necessary.
This might involve using a higher temperature element or restricting the maximum furnace operating temperature to accommodate the limitations of the heating element.
4. Importance of Atmosphere
The choice of heating element is heavily influenced by the atmosphere in which the furnace operates.
In oxidizing environments, materials that can tolerate elevated temperatures in the presence of oxygen are preferred.
Molydisilicide elements are an excellent choice in such scenarios due to their robust performance and self-renewing protective coating.
Continue Exploring, Consult Our Experts
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