The diameter and thickness of the heating wire is a parameter related to the maximum operating temperature. The larger the diameter of the heating wire, the easier it is to overcome the deformation problem at high temperature and prolong its own service life. When the heating wire operates below the maximum operating temperature, the diameter shall not be less than 3mm, and the thickness of the flat belt shall not be less than 2mm. The service life of the heating wire is also largely related to the diameter and thickness of the heating wire. When the heating wire is used in a high-temperature environment, a protective oxide film will be formed on the surface, and the oxide film will age after a period of time, forming a cycle of continuous generation and destruction. This process is also the process of continuous consumption of elements inside the electric furnace wire. Electric furnace wire with larger diameter and thickness has more element content and longer service life.
1. The main advantages and disadvantages of the iron-chromium-aluminum alloy series: Advantages: the iron-chromium-aluminum electric heating alloy has a high service temperature, the maximum service temperature can reach 1400 degrees, (0Cr21A16Nb, 0Cr27A17Mo2, etc.), long service life, high surface load, and good oxidation resistance , high resistivity, cheap and so on. Disadvantages: Mainly low strength at high temperature. As the temperature increases, its plasticity increases, and the components are easily deformed, and it is not easy to bend and repair.
2. The main advantages and disadvantages of nickel-chromium electric heating alloy series: Advantages: high temperature strength is higher than that of iron-chromium-aluminum, not easy to deform under high temperature use, its structure is not easy to change, good plasticity, easy to repair, high emissivity, non-magnetic, corrosion resistance Strong, long service life, etc. Disadvantages: Due to the use of rare nickel metal materials, the price of this series of products is up to several times higher than that of Fe-Cr-Al, and the use temperature is lower than that of Fe-Cr-Al
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