The precautions for the heating wire and heating tube of the air duct heater are different

Electric heating wire: The use temperature of the component refers to the surface temperature of the component itself in dry air, not the temperature of the furnace or the heated object. In general, the surface temperature is about 100 degrees higher than the furnace temperature. There is also a considerable relationship between the temperature of the component and the wire diameter of the component. In general, the wire diameter of the temperature of the component should not be less than 3mm, and the thickness of the flat belt should not be less than 2mm.