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Potassium-Doped Tungsten Wire

Potassium-Doped Tungsten Wire is a specialized high-temperature wire with excellent creep resistance and mechanical strength. It is widely used in lighting applications, such as incandescent and halogen lamp filaments, as well as in vacuum devices, due to its ability to withstand extreme heat without sagging or evaporating.

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Potassium-Doped Tungsten Wire is manufactured using pure tungsten metal combined with trace amounts of potassium to enhance its high-temperature performance. This wire is produced through powder metallurgy and plastic processing methods, including wire drawing, electrolytic polishing, and other techniques.

 

Key Features:

1. High Melting Point: Capable of withstanding extreme temperatures without deformation or melting.

2. High Strength and Durability: Offers excellent mechanical strength and longevity, especially at high temperatures.

3. Low Evaporation Rate: Reduces vaporization even in high-temperature environments, which extends the wire's useful life.

4. Corrosion Resistance: Provides resistance to acids, alkalis, and other corrosive substances.

5. Creep Resistance: Enhanced by potassium doping, the wire can resist sagging or deformation, even at very high temperatures.


Applications:

1. Lighting Industry: Used primarily in incandescent and halogen lamps as filament material due to its excellent durability and stable performance under high heat.

2. Electron Tubes and Vacuum Devices: Its low evaporation and high melting point make it ideal for use in high-temperature vacuum environments.

3. High-Temperature Heating Elements: Frequently used in various heating elements and furnace applications due to its excellent thermal properties.


Physical properties:

(1)Diameter: 15um min. Diameter tolerance, winding property, tensile strength, straightness, and high-temperature properties as per GT/B4181-2017. 

(2)Surface properties: Smooth surface without mould spots, cracks, burr, pit or groove. The dark wire appears evenly black with light blue permitted, and the white wire appears silver white or silver grey. 

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