Tungsten crucible is an important equipment for rare earth smelting in the market at present. Tungsten crucible has the characteristics of less pollution to smelting metal and long service life, so it is widely used in today's rare earth industry.

1, Application

Tungsten crucible is mainly used for rare earth metal smelting, induction furnace heating body and quartz glass smelting process. Tungsten crucible is one of the products of tungsten, which is made of fw-2 material in tungsten powder. The production process is mainly divided into sintering, stamping and welding.

More and more tungsten crucible manufacturers pay high attention to tungsten crucible because of its high boiling point, high temperature strength, wear resistance and corrosion resistance, low thermal expansion coefficient and other advantages. In the future, rare metals are increasingly scarce, so we should use and maintain them reasonably, so as to better discover the power.

2, Characteristics

Tungsten crucible is widely used in quartz glass melting furnace, rare earth smelting furnace and other industrial furnaces, the working temperature of which is generally above 1900℃. Especially for sapphire single crystal tungsten crucible, it has the characteristics of high purity, high density, no internal cracks and accurate size. Tungsten crucible plays a key role in the quality control of crystal pulling, decrystallizing and sticking pot and the use of sapphire crystal.

Due to the high melting point of tungsten boiling point, high temperature strength of good anti-friction corrosion, heat conductivity of small thermal expansion coefficient, hardenability is good, widely used in rare earth smelting quartz glass, electronic spray crystal growth and other industries.

Tungsten crucible, tungsten bar is known as one of tungsten products, the use of molybdenum bar turning processing molding welding molding a variety of pure tungsten plate tungsten plate and pure tungsten bar after the corresponding process processing. Due to the high temperature when using, we should strictly follow the instructions for production and use, so that both the processed products and our personal safety are guaranteed.

Tungsten and molybdenum products indicate that in recent years, with the pollution caused by the use of traditional resources in China becoming more and more serious, the development of new green energy has become a top priority, which is more obvious in the preparation industry of monocrystalline silicon, polycrystalline silicon and sapphire. In the preparation process of silicon materials and sapphire and other new energy raw materials, they are realized at a very high temperature. Therefore, molybdenum crucible with high high-temperature resistance is usually used. In the actual production process, the traditional molybdenum crucible is usually taken out and dumped together with the melting metal crucible in order to pour out a certain amount of solution during metallurgical melting. Since the temperature of smelting such as steel is above 1500 ° c, the temperature difference between the inside and outside of the furnace is very large and the cooling speed is very fast after taking out the molybdenum crucible together with the molten liquid. Sometimes the liquid slurry has not been completely poured out, and the remaining part will be cooled and solidified and stick together with the molybdenum crucible, which is difficult to clean.