Operating temperature of electric heating wire
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Operating temperature of electric heating wire
The maximum operating temperature of an electric heating wire is the most important performance indicator in the selection process. It is important to remind buyers that the operating temperature of an electric heating wire refers to the surface temperature of the component body during operation, rather than the operating temperature that the electric heating equipment or the heated object can ultimately reach.
When designing and selecting electric heating wires, the final heating temperature can be measured based on the electric heating equipment used or the object to be heated. For example, when electric heating wires are used for boiler heating, the difference between the furnace temperature and the operating temperature of the electric heating wire is about 100 ℃. If the heating temperature of the electric heating wire exceeds the maximum operating temperature, the oxidation process will accelerate, the heat resistance will decrease, and the service life will be shortened.
The diameter and thickness of the electric heating wire
The diameter and thickness of the electric heating wire are parameters related to the highest operating temperature. The larger the diameter of the electric heating wire, the easier it is to overcome deformation problems at high temperatures and extend its service life. The electric heating wire should maintain a diameter of no less than 3mm and a flat strip thickness of no less than 2mm when operating below the highest operating temperature.
The service life of electric heating wires is largely related to their diameter and thickness. When electric heating wires are used in high-temperature environments, a protective oxide film will form on the surface. After a period of time, the oxide film will age, forming a cycle of continuous generation and destruction. This process is also the continuous consumption of internal elements in electric heating wires. Electric heating wires with larger diameter and thickness have a higher content of elements and a longer service life.
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