Tungsten News

Tungsten News
China Tungsten Industrial Structure in 2020 207

China Tungsten Industry Development Report (2020)Ⅲ 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.…

Read More..
Tungsten News
China Tungsten Industry Economic Overview in 2020 380

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.…

Read More..
Tungsten News
International Tungsten Industry Development Overview 218

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.…

Read More..
Tungsten News
Electron Beam Melting for tungsten components 193

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…

Read More..
Tungsten News
Performance of the Coated Cemented Carbide Tools 1,961

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…

Read More..
Tungsten News
Forging and Annealing Process of Pure Tungsten Bar 252

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…

Read More..
Tungsten News
Tungsten Copper Resistance Welding Influential Factors 187

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…

Read More..
Tungsten News
Tungsten Copper Resistance Welding Types 190

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…

Read More..
Tungsten News
Tungsten Copper for Resistance Welding 189

Tungsten copper is a material with high electricity conductivity, when using for resistance welding, the material is bonded with copper hand. This kind of welding method refers to a method in which electric current passes through the welding objective and the resistance heat generated at the contact point as a heat source to locally heat the objective while pressing for welding. There are many advantages for this kind of welding method, high productivity, low deformation and easy automation realization. The…

Read More..
Tungsten News
Cobalt Doped Nano Tungsten Oxide for Anode Material 149

Compared with commercial graphite anode materials for lithium-ion batteries, nano-transition metal oxide anodes have better lithium storage properties and higher theoretical specific capacity, which are more in line with future social development requirements. As far as the transition metal tungsten trioxide is concerned, it is not only eco-friendly, but also low in price and high in theoretical specific capacity. It is undoubtedly a negative electrode material with great development potential. However, bulk tungsten trioxide has low conductivity and large volume…

Read More..
1 … 14 15 16 17 18 … 23