China is one of the richest tungsten resources storage countries in the world. Therefore, as deep processing product of tungsten, tungsten crucible industry has been continuously developed in China. The main applications of tungsten crucible in China are rare earth smelting, quartz glass, electronic spraying, crystal growth, etc.

Nowadays, our country has a production capacity for some conventional tungsten crucible, but there still exist some problems for the high-tech products. For example, the manufacturing technique for complex shape of the tungsten crucible is relatively rare, but such products play an important role in the area of high technology. And for instance, quartz glass has been widely applied in laser technology, astronomy and sophisticated technology. With the rapid development of modern technology, as the core components of quartz glass, tungsten crucible has a wide range prospects for development. The next few years, the development direction of the tungsten crucible will be large-size, high-quality, low-cost characteristics of tungsten crucible

With the rise of the tungsten industry in our country, the exploitation of tungsten resources has become a major problem. Our country has been exporting tungsten raw materials for a long time, which will affect the production of tungsten crucible. On the other hand, the utilization of the tungsten crucible is not enough. Tungsten Crucible has a long life time for using so that users can reuse it for many times. It can not only save costs but also protect the ecological environment. In addition, changing the export structure of the tungsten crucible which can save a lot of foreign exchange and improve our economy.

In recent years, the rapid development of chemical vapor deposition of can produce complex shape tungsten products in China. This is an important research direction of pure tungsten manufacturing technique. Such tungsten crucible that made by chemical vapor deposition process will be gradually on the market. Isostatic - sintering process in our country has reached the international advanced level and the scale of China's tungsten crucible development would be expanded with continuously improvement of the process. With the deepening of China's tungsten crucible research, international influence of domestic tungsten crucible is gradually rising, the tungsten crucible industry of China will occupy a major position in the international area in the future.

The main raw material of tungsten crucible is tungsten, and it is mainly formed through the deep processing of tungsten. Thanks to the high melting point and boiling point, a good thermal conductivity, low thermal expansion coefficient, a strong abrasion and corrosion resistance and other excellent properties of tungsten, tungsten crucible is widely applied in smelting of rare earth, quartz glass and crystal growth industries.

As an important member in the smelting of rare earth, functional performance and life time of tungsten crucible is very important. In the past, smelting of rare earth mainly use crucible which is welded by tungsten, molybdenum, or tantalum slab. But because there are many problems of this kind of crucible which would have seriously impact on their life time. The problems of welded crucible are more serious for high temperature or high purity rare earth metals. welding production out of the crucible short life is even more obvious. To solve this problem, the researchers developed a sintered tungsten crucible which can deal with the problem of crack of welding process. Sintered tungsten crucible has a high density, a high purity, long life time and other properties which make the rare earth smelting industry pay more attention to it. Compared with other types of crucibles, on the one hand, tungsten crucible would produce less pollution when smelting metal. On the other hand, its life time is longer, so the tungsten crucible is widely applied in rare earth industry.

Because of the melting point of tungsten can reach 3600℃, tungsten crucible can be considered as the cord cage and widely applied to the furnace of sapphire products. And the temperature tungsten crucible is generally above 2000 ℃ while working. Especially for sapphire products furnace, characteristics of a high purity, high density, crack-free, precise size, smooth inner and outer walls of the tungsten crucible can greatly improves the success rate of seed of the growth of sapphire crystal. In addition, tungsten crucible also plays a key role in controlling the quality of crystal pulling and the life time of sapphire products.

Quartz glass is an amorphous material which is only made of silica. The raw materials of it are crystal, silica and silicide, and quartz glass can be formed by high temperature melting or chemical vapor deposition. Therefore, it need for a high melting point and boiling point tungsten crucible as the core cage. In addition, the tungsten crucible can also greatly improve the rate of finished quartz glass.