Tungsten crucible is one of the metal tungsten products, mainly divided into sintering molding (applied to powder metallurgy technology), stamping molding, spinning type. Using tungsten rod turning processing (generally small size), welding forming a variety, using pure tungsten plate, tungsten sheet and pure tungsten rod by the corresponding process. Tungsten crucible can be used in vacuum inert gas below 2600 ℃. Tungsten has high melting point, high boiling point, high temperature strength, anti-wear and corrosion resistance, high thermal conductivity, low coefficient of thermal expansion and good hardenability. Tungsten crucible is widely used in rare earth smelting, quartz glass, electronic spraying, crystal growth and other industries·

Tungsten crucible is widely used in rare earth smelting, quartz glass, electronic spraying, crystal growth and other industries due to its high melting point, boiling point, high high temperature strength, anti-corrosion, high thermal conductivity, small coefficient of thermal expansion and good hardenability.

Physical and chemical properties editing

1. Purity: W ≥ 99.95%;

2. 5 g / cm3;

3. Maximum application temperature: 2400 ℃.

Tungsten powder - Screening - batch - isostatic pressing - rough turning - intermediate frequency sintering - fine turning - packaging.

Because the melting point of tungsten is as high as 3410 ℃, tungsten crucible is widely used in sapphire single crystal growth furnace, quartz glass melting furnace, rare earth smelting furnace and other industrial furnaces, and its working temperature is generally above 2000 ℃. Especially for sapphire crystal growth furnace, the tungsten crucible with high purity, high density, no inner crack, accurate size, smooth inner and outer walls plays a key role in the success rate of seed crystal, quality control of crystal drawing, desrystallization and sticking pot and service life of sapphire crystal growth process.