Tungsten

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Tungsten Wire Tensile Strength and Ductility 17

The tensile strength and ductility of tungsten wire complement each other. Its high strength ensures structural stability, while its moderate ductility enables it to be processed into complex shapes. Tungsten wire’s ultra-high tensile strength and controllable ductility make it widely used in lighting, electronics, aerospace, and other fields. 1. Tensile Strength Tungsten wire’s extremely high tensile strength is one of its key properties as a high-temperature and structural material. The tensile strength of pure tungsten is typically between 800 and…

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Uses of Tungsten Wire in Modern Industry 17

As a key material in modern industry, tungsten wire boasts a wide range of applications due to its high melting point, high hardness, corrosion resistance, electrical and thermal conductivity, and high-temperature stability. It plays an irreplaceable role in lighting, electronics, medical, and new energy fields. Although traditional applications have declined, emerging technologies (such as photovoltaic tungsten wire) are driving continued growth in demand. Main Applications of Tungsten wire in Modern Industry 1. Lighting Industry The widespread adoption of LED technology…

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Role of Tungsten Wires in Vacuum Tubes 15

Tungsten wires in vacuum tubes primarily serve as hot cathodes (thermal electron emission sources). By emitting thermal electrons through heating, they provide a stable operating current for the vacuum tube, supporting functions such as signal amplification, oscillation, rectification, and display. 1. Emitting Thermal Electrons Tungsten wires are often used as cathode materials in vacuum tubes due to their extremely high melting point (approximately 3422°C) and excellent thermal stability. When heated to high temperatures (typically above 2000°C), electrons on the tungsten…

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Tungsten Wire Manufacturing Process 14

Tungsten Wire Manufacturing Process: 1. Raw Material Preparation (Tungsten Powder Preparation) Tungsten Ore Extraction: Tungsten trioxide (WO?) or tungstate is extracted from tungsten ore (such as wolframite or scheelite). Chemical Reduction: Tungsten trioxide is reduced with hydrogen to produce high-purity tungsten powder. The reduction process is typically performed at high temperatures, resulting in tungsten powder with uniform particle size. 2. Doping (Optional) To improve the properties of tungsten wire (such as its resistance to high-temperature deformation), trace amounts of dopants…

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The Discovery and History of Tungsten Wire 13

The discovery and history of tungsten wires is a crucial chapter in the development of materials science and lighting technology, culminating in the efforts of numerous scientists and engineers. Tungsten (chemical symbol W), a metal with a high melting point and exceptional hardness, attracted the attention of scientists as early as the late 18th century. In 1783, Spanish chemists Juan José Eliosa and Fausto Eliosa first isolated tungsten from ore and named it “wolfram” (from the German for “wolf’s foam”).…

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Chemical and Physical Properties of Tungsten wire 8

Tungsten wire’s unique chemical and physical properties make it widely used in light bulbs, electronic devices, and high-temperature industrial applications. I. Chemical Properties of Tungsten Wire 1. Chemical Stability: Tungsten is chemically stable at room temperature and does not readily react with oxygen, water, acids, or alkalis. At high temperatures (such as those found in incandescent lamps), tungsten slowly oxidizes to form tungsten trioxide (WO?). Therefore, bulbs must be filled with an inert gas (such as argon or nitrogen) or…

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Applications of Tungsten wire in High-Temperature Lighting Systems 9

Although high-efficiency lighting technologies such as LEDs are gradually replacing traditional incandescent lamps, tungsten wire still holds irreplaceable advantages in high-temperature lighting systems due to its superior physical and chemical properties, particularly in incandescent lamps and certain specialty lighting equipment. 1. Properties of Tungsten wire Tungsten has an extremely high melting point (approximately 3422°C), one of the highest melting points of naturally occurring metals. This allows it to maintain structural stability at high temperatures. Furthermore, tungsten has moderate resistivity, a…

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Tungsten Wire Applications in Professional Lighting Equipment 7

Tungsten wire has a wide range of applications in professional lighting equipment, especially in stage lighting, film and television shooting, photography studios, and medical lighting, due to its high melting point, high temperature resistance, and good electrical conductivity. I. Characteristics and Advantages of Tungsten Wire Tungsten wire has a melting point of up to 3422°C, making it stable at high temperatures and suitable for the manufacture of high-temperature light-emitting devices such as incandescent and halogen lamps. When energized, tungsten wire…

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Role of Tungsten Wire in the Electric Lighting Industry 7

Tungsten wire, thanks to its high melting point, high-temperature resistance, and chemical stability, plays a crucial role in the electric lighting industry. From incandescent lamps to halogen lamps and then to specialty lighting, the use of tungsten wire has driven the advancement of lighting technology. Despite competition from emerging technologies, tungsten wire maintains its unique value in specific areas and has been a cornerstone of the century-long development of the electric lighting industry. I. The Role of Tungsten wire in…

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Uses of Tungsten Wire in High-Temperature, Low-Vapor-Pressure Environments 8

Tungsten wire’s application in high-temperature, low-vapor-pressure environments is due to its high melting point, low vapor pressure, and excellent thermal stability and mechanical strength. From lighting to industrial heating to high-tech fields, tungsten wire plays an irreplaceable role in modern technology. 1. Incandescent and Halogen Lamps Tungsten wire is the core light-emitting element in traditional incandescent and halogen lamps. Due to its high melting point of 3422°C, tungsten can operate stably at temperatures of 2000-3000°C without melting or significant evaporation.…

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