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Do you know about tungsten crucible?
A tungsten crucible is a container used for high-temperature applications, typically made from high-purity tungsten. Due to tungsten’s extremely high melting point (approximately 3,422°C or 6,172°F), it remains stable under extreme heat, making it widely used for melting and handling other metals, alloys, and ceramic materials that require very high temperatures. Characteristics: High Melting Point: Tungsten has a very high melting point, allowing it to withstand extreme heat environments. Corrosion Resistance: Tungsten crucibles exhibit good corrosion resistance in most chemical environments. Strength: Tungsten maintains high mechanical strength even at elevated temperatures. Low Reactivity: Compared to many other materials, tungsten has weak reactions with most chemicals, helping to preserve the purity of samples. Applications: Metallurgy: Used for melting precious metals like gold and silver, as well as refractory metals. Laboratory Research: Employed as containers in chemical analysis and materials science research. Semiconductor Industry: Used in the production of single-crystal silicon and other semiconductor materials. Glass Manufacturing: Used for preparing special types of glass and ceramic materials. Usage Considerations: While tungsten crucibles are heat-resistant, they can react with oxygen in the air under certain conditions, so protective atmospheres should be considered during use. Careful cleaning before and after use is essential to...
2024-08-13 Learn More
About non-ferrous materials- Tungsten
ChatGPT Tungsten products refer to various grades and types of products made from tungsten ore. These products can be categorized into tungsten ore, tungstate salts, tungsten powders, pure tungsten products, tungsten alloys, hard alloys, and other tungsten derivatives. Tungsten Ore: White Tungsten Ore (Scheelite) Black Tungsten Ore (Wolframite) Tungstate Salts: Tungstate salts are generally divided into tungsten oxides, tungsten chlorides, and tungsten fluorides. Tungstate (WO4 2-): Tungstate salts contain the tungstate anion (WO4 2-) or polytungstate anion (W7O24 6-). Ammonium, alkali metals, alkaline earth metals, and many heavy metal cations can form tungstate salts. Common tungstate salts include: Sodium Tungstate (Na2WO4·2H2O) Calcium Tungstate (CaWO4) Cobalt Tungstate (CoWO4) Cadmium Tungstate (CdWO4) Ferrous Tungstate (FeWO4) Ammonium Paratungstate [(NH4)6W7O24·6H2O] Zinc Tungstate (5ZnO·12WO3) Calcium tungstate and ferrous tungstate are found in scheelite and wolframite, respectively. Ammonium salts and alkali metal tungstates are water-soluble, while other tungstates are not. Tungstates are typically prepared by heating metal oxides or hydroxides with tungsten trioxide. Tungstates are widely used as functional materials; for instance, calcium tungstate is an important X-ray luminescent material, and sodium tungstate is used to prepare dyes and pigments. Tungsten Powders: Tungsten powder products include pure tungsten powder, tungsten carbide powder, alloy powders with additional...
2024-08-08 Learn More
Tungsten-Copper Electrical Alloys for High-Voltage Switches
Tungsten-copper (W-Cu) electrical alloys are extensively used in high-voltage switch applications due to their exceptional properties. These materials leverage the high melting point and excellent thermal and electrical conductivity of copper, combined with the high strength and arc resistance of tungsten. The unique combination of these elements results in a material that can effectively dissipate heat and withstand the high temperatures and mechanical stresses encountered in high-voltage switchgear operations. In high-voltage and ultra-high-voltage switchgear, tungsten-copper alloys are crucial for ensuring reliable performance and longevity. They are commonly used in the contacts of 128kV SF6 circuit breakers, high-voltage vacuum load switches (ranging from 12kV to 40.5kV and 1000A), and surge arresters. These applications benefit from the alloys’ excellent resistance to electrical corrosion, arc erosion, and their ability to operate under high voltage. The use of tungsten-copper in high-voltage vacuum switches offers several advantages, including compact size, ease of maintenance, and wide application range. These switches are capable of operating in harsh environments, such as humid, flammable, explosive, and corrosive conditions, making them highly versatile and reliable in various industrial settings.
2024-08-05 Learn More
Tungsten-nickel-iron alloy (W-Ni-Fe alloy) is an important engineering material
Tungsten-nickel-iron alloy (W-Ni-Fe alloy) is an important engineering material characterized by high density, high strength, high hardness, good wear resistance, excellent corrosion resistance, good thermal stability, and high-temperature stability. It has a wide range of applications in many fields. Military Applications Armor-piercing Ammunition: Due to its high density and good mechanical properties, tungsten-nickel-iron alloy is often used as the core material for armor-piercing shells to enhance their penetration capabilities. Missile and Rocket Components: In the manufacturing of missiles and rockets, this alloy is used to make counterweights, gyroscope rotors, and other key components to ensure flight stability and accuracy. Radiation Shielding: In the protective systems of nuclear weapons and reactors, tungsten-nickel-iron alloy is used as a radiation shielding material due to its excellent radiation absorption capabilities. Aerospace Engine Components: In aerospace engines, this alloy is used to manufacture turbine blades, bearings, and other components that operate in high-temperature and high-pressure environments because of its good thermal stability and wear resistance. Counterweights and Balancing: Counterweights and balance components in aircraft and other aerospace vehicles are often made from tungsten-nickel-iron alloy to ensure flight safety. Gyroscopes: Gyroscopes are the core components of navigation systems. The high density and stability of tungsten-nickel-iron alloy...
2024-08-01 Learn More

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