Tungsten News

Tungsten News
China Tungsten Industry Economic Overview in 2020 357

China Tungsten Industry Development Report (2020)Ⅱ In 2020, in the face of the severe and complex international situation and the arduous tasks of domestic reform, development and stability, especially the severe impact of the COVID-19, under the strong leadership of the Party Central Committee with Xi Jinping at the core, the country will do a solid job of “six stability”, fully implement the “six guarantees” tasks, coordinate epidemic prevention and control, and achieve significant results in economic and social development.…

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Tungsten News
International Tungsten Industry Development Overview 192

China Tungsten Industry Development Report (2020)Ⅰ In 2020, in the face of the severe and complex international situation and the arduous tasks of domestic reform, development and stability, especially the severe impact of the COVID-19, under the strong leadership of the Party Central Committee with Xi Jinping at the core, the country will do a solid job of “six stability”, fully implement the “six guarantees” tasks, coordinate epidemic prevention and control, and achieve significant results in economic and social development.…

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Tungsten News
Electron Beam Melting for tungsten components 172

Tungsten components manufacture use Electron Beam Melting (abbreviation EBM) is an additive manufacturing method. Electrons accelerated under vacuum selectively melt metal powder andproduce a 3D component in an additive way layer by layer. The big advantage of this method consists in the energy source used the electron beam. It is used to pre-heat the metal powder and the carrier plate prior to melting, as a result of which deformation and inherent stress are reduced. It is possible to process materials…

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Tungsten News
Performance of the Coated Cemented Carbide Tools 1,845

The ratio of coated cemented carbide tools in metal processing industry is increasing steadily. In recent 10 years, its quality and performance have been significantly improved. On the one hand, due to the quality improvement of the coating , it will be better to control porosity and thickness; on the other hand, the metallurgical technology between the coating and the substrate interface has also been improved, therefore can increase the adhesion of the coating and prevent the interfacial reaction that reduces the strength. Increasing cutting speed can significantly…

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Tungsten News
Molybdenum Sputtering Target Is Essential for Semiconductor Chip 266

Nowadays, sputtering targets have a wide range of applications, from semiconductor chip to the film deposition of various materials in integrated circuit processing, to energy-saving glass, familiar golden tungsten carbide coting made of titanium nitride and wire-resistance coatings for tools and daily necessities. Many materials can be obtained in the form of sputtering targets during fabrication of CDs and DVDs. Sputtering is a mature technology, which can deposit films of various materials on many shapes and sizes of substrates. This…

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Molybdenum Sputtering Target for Flat Panel Displays, Marking China’s Breakthrough on This Technology 288

China has developed the first G6 super-large high-end molybdenum target with completely independent intellectual property rights, and put into mass production in 2018. This means that China is the first country that can produce super-size target for semiconductors in the Asia-Pacific region, and breaks the European monopoly on this core technology. As we all known, limited by equipment and technology, China have to import a large number of this kind of product every year, but now, the breakthrough means that…

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How do Impurities of Glass Material Affect Service Life of Molybdenum Electrode? 301

Among the types of cups and pots on the market, glass is the healthiest, safest, and most widely used cups, according to relevant research data. There are various kinds of glasses in the market, but only those with pure glass material, crystal clear body, and moist feel are deeply loved by consumers. How to produce high-quality glass? The production process of glass is batching, melting, forming, sintering and annealing. Among them, melting is extremely important for the quantity of finished…

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Tungsten News
Forging and Annealing Process of Pure Tungsten Bar 230

Pure tungsten bar is made of 99.95% tungsten power and its forging and annealing process is shown by test. The bar has physical properties e.g. density 19.3g/cm3, melting point (liquid) 3422℃, electricity conductivity 30% IACS min and hardness 69hra min. It owns special characters including low thermal expansion, good thermal conductivity, sufficient resistance and high elastic modulus. The bar is widely applied in various fields, e.g. support line, lead-in line, printer needle, various electrodes, quartz furnace, filament, high-speed tools, automatic products, sputtering target and heating devices…

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Tungsten News
Tungsten Copper Resistance Welding Influential Factors 161

There are many factors, which can influence the welding effort of resistance welding, which is applied tungsten copper as electrodes, such as welding current, time, pressure, electrode shape and properties and workpiece surface condition. 1.0 Influence of welding current The influence of current on heat generation is greater than both resistance and time. Therefore, in the spot welding process, it is a parameter that must be strictly controlled. The main causes of current changes are grid voltage fluctuations and changes…

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Tungsten News
Tungsten Copper Resistance Welding Types 163

There are four types of resistance welding, which can use tungsten copper bonded copper electrode as welding tip, spot welding, seam welding, butt welding and projection welding. Spot welding assembles the weldment into a lap joint and presses it between two cylindrical electrodes to melt the base metal using resistance heat to form a solder joint, which is mainly used for thin plate welding. The processes are preloading to ensure good contact of the workpiece, energizing to form nugget and…

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