The role of electric heating wire in electric heating tube

What is the function of the heating wire in the electric heating tube

The role of the heating wire in the electric heating tube?

Resistance wire (wire), wire, magnesium oxide powder and sealing material, the materials used in these materials for heating in different environments are different. Today, Watron will take you to talk about the choice of wires: The heating tube is mainly composed of outer metal tube, high temperature magnesium powder and inner heating wire. The heating tube is first selected according to the required voltage and power, and then processed into a uniform fine spiral in a winding machine. According to the actual needs of the metal pipe, shrink and quench, and finally distribute the heating wires evenly in the pipe, and then use the powder machine to fill the gap between the high-temperature magnesium oxide powder between the wire and the metal pipe wall, and seal and insulate the outlet end of the pipe. deal with. The three main components of the heating tube are indispensable and complementary. The outer metal tube mainly plays the role of protecting the internal structure and heat transfer; the high temperature magnesium powder mainly plays the role of heat conduction and heat preservation, so that the conduction between the wire and the metal tube is not in a safe level, and it can be used safely; the tube core heat, Heating mainly plays the role of heat and heat pipe, and the heat pipe is the heat source. Due to the different use environments, the heating wires are also different in the production of heating tubes, including iron-chromium-aluminum wire and nickel-chromium wire. Iron-chromium-aluminum heating wire: good oxidation resistance, high resistivity, high low temperature strength, high temperature deformation and bending, surface load, low price. Nickel-chromium heating wire: plastic, strong corrosion resistance, long-term high temperature deformation is not easy, long life, expensive. How does the customer choose the heating wire in the heating pipe, and how to consider the cost of price, temperature and frequency of use? Price cost: The cost of nickel-chromium is generally several times more expensive than that of iron and chromium-aluminum, so consider the actual need to choose a suitable wire. Operating temperature: The temperature is high when using iron-chromium-aluminum, but in a long-term high temperature environment, iron-chromium-aluminum is deformed than nickel-chromium, and the deformation easily affects the service life. Therefore, it is generally recommended to use nickel-chromium heating wire in a high temperature environment, which has a long service life and is not easy to deform. . Frequency: Nickel-chromium heating wire has better stability and plasticity than iron-chromium-aluminum heating wire, so long-term use in high-load environment, the service life and use of nickel-chromium heating wire will be protected. Through the specific analysis of the four elements of the heating tube: casing material, resistance wire (wire), magnesium oxide powder, and sealing; different.