Tungsten crucibles introduction
1. Appearance: silver grey metal luster
2. Purity: W≥99.95%
3. Density: not less than 18.3g/cm3
4. Supply state: sintering or processing
5. Quality standard: according to customer
Specifications of Tungsten crucibles
| diameter (mm) | thickness (mm) | height (mm) | Surface finish | inner surface finish | Inner bottom finish |
| 30 ~ 50 | 2 ~ 10 | <500 |
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| 50 ~ 100 | 3 ~ 15 | <1000 |
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| 100 ~ 150 | 3 ~ 15 | <1000 |
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| 150 ~ 200 | 5 ~ 20 | <1000 |
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| 200 ~ 300 | 8 ~ 20 | <1000 |
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| 300 ~ 400 | 8 ~ 30 | <1000 |
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| 400 ~ 450 | 8 ~ 30 | <1000 |
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| 450 ~ 600 | 8 ~ 30 | <1000 |
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Special sizes can be manufactured based on customers' requirements
Production process of Tungsten crucible
raw materials (tungsten powder) --- isostatic pressing --- mechanical processing --- IF induction sintering --- mechanical processing–detection check --- tungsten crucibles
Production equipments
CNC vertical turning machine, CNC milling machine, wire cutting machine
Application Tungsten crucibles
Since the melting point of tungsten has reached 3380oC, tungsten crucible is widely applied in industry furnace such as sapphire growth furnace, quartz glass melting furnace, and rare earth smelting furnace. The temperature in working environment of tungsten crucible is above 2000oC. For sapphire crystal growth furnace, high-purity, high- density, no internal-crack tungsten crucible with other features of exact measurement and smooth surface has decisive influence on success ratio of seed growth, quality control of pulling crystal, metamictization pot-committed and service life during sapphire growth process, and we are willing to be checked by professional units.
