1, different classification
Electric heating wire: According to the content of its chemical elements and the structure of the structure, it can be divided into two categories: one is the iron-chromium-aluminum alloy series, and the other is the nickel-chromium alloy series, which have their own more as the electrothermal materials. The advantages are widely used.
Electric heating pipes: classified according to the outlet mode, which can be divided into single-head electric heating pipes and double-head electric heating pipes. According to the material classification, it can be divided into stainless steel electric heating tube, quartz electric heating tube, Teflon electric heating tube and titanium electric heating tube. According to the classification of use, it can be divided into dry burning electric heating pipe and water burning electric heating pipe. According to the classification of heating methods, it can be divided into conventional resistance heating tubes and radiant electric heating tubes.
2, different uses
Electric heating wire: The main purposes are metallurgical machinery, medical, chemical, ceramics, electronics, electrical appliances, glass and other industrial heating equipment and civil heating appliances.
Electric heating pipe: The application field is saltpeter tank, water tank, oil tank, acid-base tank.
3, different matters needing attention
Heating wire: The maximum operating temperature of the component refers to the surface temperature of the component itself in dry air. It does not refer to the temperature of the furnace or the object to be heated. Under normal circumstances, the surface temperature is about 100 degrees higher than the furnace temperature. The maximum use temperature of the component is also related to the wire diameter of the component. Under normal circumstances, the wire diameter of the component should be no less than 3mm and the thickness of the flat tape should be no less than 2mm.
Electric heating tube: The component is allowed to work under the following conditions, the relative humidity of the air is not more than 95%, and there is no explosive or corrosive gas. The working voltage should not be greater than 1.1 times the rated value, and the outer casing should be effectively grounded. The components should be stored in a dry place. If the insulation resistance is less than 1MΩ for a long time, it can be dried in an oven of about 200 °C, or the voltage can be heated and heated until the insulation resistance is restored.