Tungsten Wire
Tungsten filament is a filament made by forging and drawing tungsten strips. Tungsten filaments are mainly used in electric light sources such as incandescent lamps and tungsten halogen lamps. Tungsten filaments are used as various illuminants in light bulbs. Tungsten wire is generally drawn from various wire drawing dies. The main use is to manufacture filaments and high-speed cutting alloy steel, and is also used in optical instruments, chemical instruments, etc.
Main Feature:
1. High melting point: Tungsten has a very high melting point, about 3422°C (6192°F), which is the highest among all pure metals. This means that at high temperatures, tungsten filament can maintain its shape without melting, which is a key reason for its widespread use in lighting technology.
2. Good electrical conductivity: Although not as good as metals like copper or gold, tungsten still has good electrical conductivity, enough to be used as a filament material in incandescent lamps, through which electric current is conducted and light and heat are produced.
3. Anti-corrosion and anti-oxidation: At high temperatures, tungsten can resist oxidation. Although it will slowly oxidize at extremely high temperatures, its service life can be significantly extended by combining with the sealed environment of inert gas within the bulb.
4. Mechanical strength: Even at high temperatures, tungsten wire maintains a certain mechanical strength and toughness, which helps maintain its structural stability and durability.
5. Low coefficient of thermal expansion: Tungsten has a relatively low coefficient of thermal expansion, which means it expands less when the temperature increases, which helps prevent the filament from excessive expansion or contraction during on/off cycles, thereby extending life.
6. Good temperature resistance: Under long-term and continuous high-temperature working conditions, tungsten wire can maintain stable performance and is not prone to deformation or breakage.
7. Ductility: Pure tungsten is actually very brittle and cannot be easily drawn into filaments. Therefore, commercially used tungsten wire often contains small amounts of additives such as rhenium to enhance its ductility and processability.
8. Impact resistance: Due to its high melting point and good mechanical properties, tungsten wire can withstand sudden current or temperature changes without damage.
1. High melting point: Tungsten has a very high melting point, about 3422°C (6192°F), which is the highest among all pure metals. This means that at high temperatures, tungsten filament can maintain its shape without melting, which is a key reason for its widespread use in lighting technology.
2. Good electrical conductivity: Although not as good as metals like copper or gold, tungsten still has good electrical conductivity, enough to be used as a filament material in incandescent lamps, through which electric current is conducted and light and heat are produced.
3. Anti-corrosion and anti-oxidation: At high temperatures, tungsten can resist oxidation. Although it will slowly oxidize at extremely high temperatures, its service life can be significantly extended by combining with the sealed environment of inert gas within the bulb.
4. Mechanical strength: Even at high temperatures, tungsten wire maintains a certain mechanical strength and toughness, which helps maintain its structural stability and durability.
5. Low coefficient of thermal expansion: Tungsten has a relatively low coefficient of thermal expansion, which means it expands less when the temperature increases, which helps prevent the filament from excessive expansion or contraction during on/off cycles, thereby extending life.
6. Good temperature resistance: Under long-term and continuous high-temperature working conditions, tungsten wire can maintain stable performance and is not prone to deformation or breakage.
7. Ductility: Pure tungsten is actually very brittle and cannot be easily drawn into filaments. Therefore, commercially used tungsten wire often contains small amounts of additives such as rhenium to enhance its ductility and processability.
8. Impact resistance: Due to its high melting point and good mechanical properties, tungsten wire can withstand sudden current or temperature changes without damage.
