Molybdenum Crucible
Density: ≥ 9.8g/cm3
Appearance: Bright
Production raw material: Mo-1 molybdenum powder
Operating temperature: 1100 ℃~1800 ℃
Purity: Mo≥99.95%
Main applications: metallurgical industry, rare earth industry, monocrystalline silicon, etc
Products Description
Molybdenum crucibles are produced using Mo-1 molybdenum powder. Due to the high melting point of molybdenum (2610 ℃), their operating temperature ranges from 1100 ℃ to 1700 ℃. As a result, molybdenum crucibles are widely used as core containers in industrial furnaces-such as sapphire single crystal growth furnaces, quartz glass melting furnaces, and rare earth smelting furnaces-where the working temperature generally exceeds 2000 ℃. This is especially true for sapphire single-crystal growth furnaces, where molybdenum crucibles with high purity, high density, no internal cracks, precise dimensions, and smooth inner and outer walls play a crucial role in ensuring the success rate of seed crystallization, maintaining quality during crystal pulling, preventing sticking during de-crystallization, and extending service life during sapphire crystal growth.
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Product name
Graphite Customization Graphite Crucible for Optical Vacuum Coating
Material
Graphite
Color
Black
Type
Crucible
Size
customization
Package
Vacuum package
Place of Origin
China, Jiangsu
MOQ
10 PCS
Advan
Durablerable
Usage
evaporation coating
Machining molybdenum crucible
Machining molybdenum crucibles are mainly small-sized crucibles, which are made by machining molybdenum rods through lathes.
Spinning molybdenum crucible
Spinning is a pressure processing method used to form thin-walled hollow rotary parts. It is achieved by using industrial feed mechanisms, such as spinning wheels or rods, to apply pressure to a metal blank that rotates along the same axis as the core mold. This causes continuous local plastic deformation, forming the desired hollow shape. A spinning molybdenum crucible is a thin-walled crucible formed by spinning a molybdenum plate as a whole. This process allows for the production of large-sized thin-walled crucibles.
Sintered molybdenum crucible
A sintered molybdenum crucible is made by adding a molybdenum powder mixture into a mold and pressing it into an initial billet. This billet is then machined by turning to form a coarse billet, which is placed in an intermediate frequency sintering furnace. Hydrogen gas is introduced, and the billet is heated to a temperature of 1900 ℃ for 30 hours. Afterward, water circulation is used to cool the billet for 9-10 hours until it reaches room temperature. Finally, the billet is heated to 1600 ℃ for 1-3 hours, taken out, and forged into the shape of a crucible. The sintered billet is then machined to form a high-quality final product.
comparison of Different process crucibles
| Production process | Machining molybdenum crucible | Spinning molybdenum crucible | Sintered molybdenum crucible |
| Purity | 99.95(%) | ≥99.95% | 99.95(%) |
| density | ≥10.2g/ cm3 | / | ≥9.8g/ cm3 |
| Height | 10-200 | / | 100-1000 |
| Diameter | 10-100 | / | 100-600 |
| Diameter tolerance | +/-5.0 | / | +/-0.5 |
| Height tolerance | +/-5.0 | / | +/-1.0 |
| Thickness | 1-20 | / | 8-20 |
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Please let me know your needs through any of the following contact methods.
Our address
Wenquan Industrial Park, Maying town, Baoji High-tech Development Zone, Shaanxi province
Phone Number
+8618392759938
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