As we all known, tungsten and molybdenum are all rare metal, the content is very low in the earth's crust. Many superior properties make the range of applications is increasingly wide. Tungsten and molybdenum have a high melting point, large proportion, high strength, high hardness, good electrical conductivity and thermal conductivity and corrosion resistance and a series of excellent comprehensive performance, so they are the ideal high temperature and high strength structural material.
Tungsten and molybdenum are important additive elements of steel and non-ferrous metals. Tungsten steel and molybdenum steel all have high strength, hardness and corrosion resistance and longer service life both at room temperature and high temperature. Addition of tungsten and molybdenum in non-ferrous alloys also can improve the strength of the alloy, wear resistance and corrosion resistance.
Tungsten carbide is a kind of hard alloy material which is widely applied at present. And it has very high hardness and red hardness. Generally, it is used for cutting, wear parts, mold, measuring tools and mining equipment. At present, the consumption of tungsten accounts for more than 40% of the total consumption. With the development of rocket and missile technology, more and more strict requirements for materials are put forward. Tungsten and molybdenum has also developed a new way of application in this regard; such as the rocket engine nozzle and high heat flux components, and satellites, the important structure material of spacecraft and the space shuttle
In the atomic energy industry, tungsten and molybdenum as an indispensable element for added package materials alloy and high temperature resistant component. In the electronic industry and electric light source industry, tungsten and molybdenum and its alloys are used for welding electrodes and other structural elements, In the machinery industry and electrical industry, they are used for manufacturing the spring wire in all kinds of precision instruments, the heating body in high temperature resistance, spiral coil used by vacuum plating and boat etc.
In addition, tungsten and molybdenum compounds have wide application in the textile, pharmaceutical, glass and other industries. The production of tungsten and molybdenum products used in electric vacuum is the important part of tungsten and molybdenum metallurgy.
China's tungsten reserves accounted for more than 50% of the world. Molybdenum reserves are also very rich. In terms of tungsten and molybdenum powder metallurgy, we have already made great achievements, however, our country still has a large gap compared with the developed countries in the world, we must redouble our efforts, and make, the tungsten and molybdenum products in China to enter the world market, catch up with and surpass the advanced world levels in a short period.