In recent years, the problem of environmental pollution has become increasingly serious, and the problem of energy shortage is also imminent. In the face of these two crises, people have launched scientific research on pollution control and environmental protection.

Nano tungsten carbide is the main material of cemented carbide because of its high hardness and high strength. Two problems that restrict the development of nano-tungsten carbide cemented carbide are the difficulty in preparation of nano-tungsten carbide powder and the rapid growth of tungsten carbide particles in liquid phase sintering.

Scheelite is a kind of mineral resource which is not easy to be mined. It often coexists with calcium gangue, has low geological grade and is relatively difficult to beneficiate. In order to obtain qualified scheelite concentrate in industry, flotation technology is widely used in the process of selecting scheelite. The most traditional method is heating flotation.

Ø9x200mm tungsten copper rod with diameter of Ø9mm and length of 200mm, the general diameter tolerance is ±0.5mm and length tolerance is 0 to +5mm. With excellent electrical and thermal conductivity, uniform microstructure, high temperature resistance, high strength, arc erosion resistance, high density; moderate conductivity and thermal conductivity.

Ø8x200mm tungsten copper rod with diameter of Ø8mm and length of 200mm, the general diameter tolerance is ±0.5mm and length tolerance is 0 to +5mm. As a contact material, it has very good machinability and thermal shock resistance. Due to arcing during contact and breaking, the contact material will rise by several thousand degrees Celsius in a fraction of a second.

Ø7x200mm tungsten copper rod with diameter of Ø7mm and length of 200mm, the general diameter tolerance is ±0.5mm and length tolerance is 0 to +5mm. which has excellent mechanical strength and excellent arc erosion resistance. In practical applications, it is widely used in vacuum electrical contacts, transformer switch contactors, and some electric and electric forging industries.

Ø6x200mm tungsten copper rod with diameter of Ø6mm and length of 200mm, the general diameter tolerance is ±0.5mm and length tolerance is 0 to +5mm. It has good electrical and thermal conductivity, arc ablation resistance and high material erosion rate, especially in the corrosion of molds made of tungsten steel and high temperature resistant super hard alloys.

Ø5x200mm tungsten copper rod with diameter of Ø5mm and length of 200mm, according to the content of tungsten and copper, the main proportion or grade of Ø5x200mm tungsten copper rod includes W50, W55, W60, W65, W70, W75, W80, W85, W90 and so on. Different proportions of tungsten and copper rods have different uses.

Ø4x200mm tungsten copper rod with diameter of Ø4mm and length of 200mm, can be widely used in high temperature materials, high voltage switches electrical alloys, electrical processing electrodes, microelectronic materials, as parts and components widely used in aerospace, aviation, electronics, power, metallurgy, machinery, sports equipment and other industries.

Ø3x200mm tungsten copper rod with diameter of Ø3mm and length of 200mm. Which with the characteristics of high hardness, high density and high strength of tungsten, it also has excellent electrical and thermal conductivity and plasticity of copper. It has good arc breaking performance, small thermal expansion coefficient and can maintain a certain dimensional stability at high temperatures.