Tungsten crucible applications:
Pure tungsten crucible applications are contain of vacuum inert gases below 2600 degrees. Tungsten has high melting and boiling point, high temperature strength, resist corrosion, high thermal conductivity, small thermal expansion coefficient, good hardenability, so tungsten is widely used in rare earth smelting, quartz glass, electronic spraying, crystal growth and other industries.
Tungsten crucible is made from pure tungsten sheet, tungsten plate and pure tungsten rod by corresponding processes.
Pure tungsten crucible is one of tungsten products. Tungsten crucible can be devided into sintered, punched and spinned crucibles, and machined ones from tungsten plate, welded ones, etc..
Tungsten crucible is widely used to the sapphire growth furnaces, quartz glass melting furnace, crystal furnace, induction furnace, sintering metal mold of high melting point, electronic beam coating, and rare earth smelting furnace.
Characteristics of tungsten crucible:
Tungsten crucible has high purity, high density, no crack, precise size, smooth inside wall and outside wall.
The possible internal injuries of tungsten crucible, such as porosity, slag and cracks are double strictly inspected to ensure the quality of tungsten crucible.
The crystal structure of tungsten crucible is compact.
| Material | Density | Size |
| w 99.95% | 19.1g/cm3(Forging） | Diameter：10-100mm; High：10-120mm |
| w 99.95% | 18.3g/cm3(Sintering） | Diameter：100-650mm; High：50-850mm |
2.Measurements and tolerances(mm)
| Delivery condition | Specification | Thickness | Roughness(μm) | |
| Diameter | Height | |||
| Sinter | 10~700 | 10~1000 | 5~30 | |
| Finished sinter | 10~650 | 10~850 | 7~25 | <2.5 |
Manufacturing process and equipment
| Item | Process | Equipment | Quality Check point |
| 1 | Tungsten powder | 1.Purity of tungsten powder | |
| 2 | Sieving | High frequency vibrating screen | 2.Fsss,HB |
| 3 | Mixed powder | V shape mixer | 3.Green strength |
| 4 | Isostatic pressing | Isostatic pressing machine | 1.Measurement of rough-processed billet |
| 5 | Rough billet lathing | CNC vertical turning machine | 2.Surface quality of rough-processed billet |
| 6 | IF sintering | IF induction sintering furnace | 1.Outside measurements of finished product |
| 7 | Competitive products lathing | High-accuracy vertical turning machine | 2.Surface quality and roughness of finished product,density |
If you have enquiry about tungsten crucible, molybdenum crucible and other products, please feel free to contact us!
We will transport tungsten crucible as soon as possible after order being confirmed.
Our German customer ordered 2 pcs of pure tungsten crucibles. She speaks highly of our tungsten crucibles.
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