What Are the Applications of Tungsten Wire in Vacuum Equipment?

Tungsten wire has a variety of applications in vacuum equipment because tungsten has excellent high temperature resistance and electrical conductivity, properties that make it an ideal material in vacuum technology. Here are some common applications of tungsten wire in vacuum equipment:

Electronic vacuum tubes and electronic devices: Tungsten wire is widely used as hot cathodes in electronic vacuum tubes (such as triodes, electron tubes) and other electronic devices. When a tungsten wire is heated by an electric current, it can emit electrons, which are used in electronic amplification and other functions in electronic devices.

Vacuum furnaces and heat treatment equipment: In vacuum furnaces and heat treatment equipment, tungsten wire is used as a heating element. Tungsten wire’s high temperature resistance allows it to operate at high temperatures and is used to heat treat metals, ceramics and other materials.

Mass Spectrometer: In a mass spectrometer, tungsten wires are often used as the ionization source. When the tungsten wire is heated by an electric current, it can produce electrons that are used to ionize molecules in the sample into ions for mass spectrometry analysis.

Vacuum sensor: Tungsten wire is used in some vacuum sensors to measure the degree of vacuum. The resistance of the tungsten wire changes with the degree of vacuum, so the degree of vacuum can be determined by measuring the change in resistance.

Vacuum tube furnaces: In some laboratory and industrial applications, tungsten wires are used as the heating element in vacuum tube furnaces for sintering and annealing.

Vacuum arc welding: In vacuum arc welding, a tungsten wire is used as an electrode, creating an arc to melt and join metals.

Vacuum cleaners and vacuum pumps: Some vacuum cleaners and vacuum pumps use tungsten wire as a heating element or electrode to create a vacuum and deliver gases.