Tungsten News

Tungsten News
China Implements Export Controls on Tungsten & Molybdenum Items 1

The Ministry of Commerce of the People’s Republic of China and the General Administration of Customs have decided to implement export controls on tungsten, tellurium, bismuth, molybdenum, and indium-related items to safeguard national security and interests and fulfill international obligations such as non-proliferation. The relevant items subject to export control are as follows: I. Tungsten-Related Items (1) 1C117.d. Tungsten-Related Materials: Ammonium Paratungstate (Customs HS Code for reference: 2841801000); Tungsten Oxide (Customs HS Codes for reference: 2825901200, 2825901910, 2825901920); Tungsten Carbide…

Tungsten News
Cutting Methods and Forming Processes of TZM Molybdenum Alloy Plates 46

TZM molybdenum alloy is a material with excellent mechanical properties and high-temperature resistance, widely used in aerospace, nuclear industry, and high-temperature furnace applications. Due to its high hardness, high melting point, and low ductility, the cutting and forming processes of TZM molybdenum alloy plates present certain technical challenges. Below are the primary methods and considerations for cutting and forming TZM alloy plates: Cutting Methods Given the high hardness and low ductility of TZM molybdenum alloy, common cutting methods include mechanical…

Tungsten News
Why TZM Alloy Is an Indispensable Material in High-temperature Industrial Applications? 46

TZM molybdenum alloy is a high-performance alloy based on molybdenum, with small amounts of titanium (Ti), zirconium (Zr), and carbon (C) added. Its name derives from the initials of these additive elements. As an advanced material widely used in aerospace, nuclear industries, and high-temperature industrial applications, TZM alloy is renowned for its exceptional melting point and high-temperature performance. Molybdenum itself is a high-melting-point metal, with a melting point of 2623°C. The melting point of TZM molybdenum alloy, enhanced by the…

Tungsten News
What Factors Influence the Longevity of Barium Tungsten Cathodes? 47

Barium tungsten cathodes are critical components in electron emission devices. The longevity of these cathodes directly impacts the efficiency and operational lifespan of the devices they are used in. Several factors influence the durability and performance of barium tungsten cathodes, as detailed below. Operating Temperature Operating temperature is one of the most significant factors affecting the lifespan of BaW cathodes. These cathodes rely on thermionic emission, which requires elevated temperatures. However, prolonged exposure to excessively high temperatures can accelerate barium…

Tungsten News
What Are the Advantages of Using Barium Tungsten Cathodes in Electron Emission Devices? 42

Barium tungsten cathodes are widely used in electron emission devices, including vacuum tubes, cathode ray tubes (CRTs), and X-ray tubes. These cathodes are renowned for their exceptional performance characteristics, which make them indispensable in applications requiring reliable electron emission. Below are the primary advantages of using these cathodes in such devices. High Electron Emission Efficiency One of the foremost advantages is their ability to emit electrons efficiently. The incorporation of barium, which acts as a reducing agent, significantly lowers the…

Tungsten News
【Know Tungsten】Fine Tungsten Rod: Essential Material for High-Precision Industries 58

A fine tungsten rod with a diameter of 1.0 mm and a length of 38 mm is a small bar made of high-purity tungsten, characterized by its high melting point, high density, high strength, and excellent corrosion resistance. Its precise dimensions and superior physical properties make it widely used in electronic devices, vacuum components, medical equipment, and precision manufacturing. The fine tungsten rod performs exceptionally well in high-temperature environments, maintaining stable physical integrity and excellent conductivity, making it an indispensable…

Tungsten News
【Know Tungsten】Tungsten Heating Rods: Essential Components for High-Temperature Industrial Equipment 47

Tungsten heating rods are electric heating elements made from high-purity tungsten material, known for their high melting point, exceptional strength, resistance to high-temperature oxidation, and outstanding thermal stability. They are widely used in high-temperature industrial equipment such as vacuum furnaces, brazing furnaces, and sintering furnaces, serving applications in aerospace, electronics, and materials research. The high efficiency and long lifespan of tungsten heating rods make them indispensable core components in high-temperature processes, providing stable heat sources in extreme environments to meet…

Tungsten News
【Know Tungsten】High-Performance Barium Tungsten Cathode: Applications and Features 50

The barium tungsten cathode is a high-performance thermionic cathode composed of a porous matrix filled uniformly with barium salts. It features low work function, high emission current, high emission efficiency, and excellent resistance to ion bombardment. Currently, it is primarily used in xenon flash lamp applications, with products including photographic lamps, electronic bayonet lamps, skin rejuvenation and hair removal lamps, solar detection lamps, pump light source lamps, pulsed sterilization lamps, industrial counter lamps, indicator lamps, and signal lamps.

Tungsten News
What Are the Application Areas and Characteristics of Pure Tungsten Sheets? 87

Pure tungsten sheets, known for their superior physical and chemical properties, are widely used across various industrial fields. Below are the main application areas and characteristics: 1. Electronics Industry Tungsten sheets are indispensable materials in the electronics industry, extensively used in the production of vacuum electronic devices such as cathodes, electrodes, and thermionic emitters. Their excellent electrical conductivity and oxidation resistance enable them to remain stable under high-temperature and high-vacuum conditions. Additionally, W sheets are employed in the semiconductor industry,…

Tungsten News
What Are Challenges Faced in Processing Pure Tungsten Sheets? 84

Pure tungsten sheets are known for their exceptional physical and chemical properties, including a high melting point (3410°C), high density, excellent thermal and electrical conductivity, and remarkable resistance to high temperatures. While these properties make tungsten a valuable material for various industrial applications, they also pose significant challenges during its processing. Below are the primary difficulties encountered in processing tungsten sheets: 1. High Melting Point and Hardness Tungsten’s extremely high melting point and intrinsic hardness make it difficult to machine…

1 2 3 … 38