The role of tungsten wire in electric heating materials is mainly reflected in the following aspects:
Excellent resistance performance: Tungsten wire has a high resistivity, which enables it to generate a lot of heat when current passes through it. Due to its resistance characteristics, tungsten wire can effectively convert electrical energy into thermal energy in electric heating materials and is widely used in electric heating equipment such as electric furnaces, heaters and filaments.
High temperature resistance: Tungsten has an extremely high melting point (about 3422°C), so in a high temperature environment, tungsten wire can maintain its physical and chemical stability. This makes tungsten wire not easy to melt or deform when working for a long time at high temperature, and is an ideal choice for electric heating materials.
Good mechanical strength: Even under high temperature conditions, tungsten wire still maintains high mechanical strength. This makes it not easy to break or deform when heated, ensuring the service life and reliability of electric heating elements.
Low volatility: Tungsten has very low volatility at high temperatures, which means that in high-temperature use, it will not evaporate or oxidize as easily as some metals, thus avoiding excessive aging or damage to the electric heating element.
Corrosion resistance: Although tungsten will oxidize when heated at high temperatures in air, tungsten filament has good corrosion resistance in a controlled atmosphere (such as a vacuum or inert gas environment). This makes it perform well in some special applications, such as vacuum electric heating elements.
Thermal conductivity: Tungsten has high thermal conductivity and can quickly conduct the generated heat to the area that needs to be heated. This property makes tungsten filament excel in heating uniformity and efficiency.
Stable emission characteristics: In filament applications, tungsten filament also has stable thermal electron emission capabilities, which can emit light stably at high temperatures. This makes it the main material for incandescent bulb filaments.
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