The single-head heating tube electric heating wire is the core part of the electric heating tube, and his choice directly affects the quality life of the electric heating tube. Yesterday, I told everyone that as a heating wire that can be used in electric heating pipes, there are certain requirements. The specific requirements can be seen: the introduction of the electric heating tube of the single-head heating pipe to the internal heating wire, so today we say If these requirements of the heating wire are met, how to choose to use it in different electric heating tubes.
In fact, in the manufacturing process of single-head heating tube electric heating tube, the current domestic electric heating tube uses two main types of resistance wires: nickel-chromium wire and iron-chromium-aluminum wire.
Let's talk about the difference between nickel-chromium wire and iron-chromium-aluminum wire:
1,The main advantages and disadvantages of nickel-chromium heating wire:
●Advantages: The high temperature strength is higher than that of iron chrome aluminum. It is not easy to be deformed under high temperature. Its structure is not easy to change, its plasticity is good, it is easy to repair, its emissivity is high, it is non-magnetic, it has strong corrosion resistance and long service life.
● Disadvantages: Due to the use of the scarce nickel metal material, the price of this series of products is up to several times higher than that of iron-chromium-aluminum, and the use temperature is lower than that of iron-chromium-aluminum.
2,Main advantages and disadvantages of iron-chromium-aluminum electric heating wire:
●Advantages: The iron-chromium-aluminum electric heating wire has high use temperature, the highest use temperature can reach 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, etc.), long service life, high surface load, good oxidation resistance, high resistivity and low price.
● Disadvantages: Mainly due to low temperature strength, plasticity increases with increasing use temperature, components are easily deformed, and are not easily bent and repaired.