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Tungsten Crucible
1). Sintering tungsten crucible
Density: 18.0 - 18.7 g/cm3
Working temperature: 1800 - 2, 600 DC
Diameter: 100 - 600mm (max. )
Cubage: 0.5 - 100 litres
2). Forging tungsten crucible
Density: 18.5 - 19.0 g/cm3
Working temperature: 1800 - 2, 600 DC
Diameter: 18 - 120mm (max. )
Cubage: 20 - 500 ml
Introduction to niobium crucible
Niobium crucibles are made of high-purity niobium metal, which has strong resistance to high temperature and deformation. According to different processing methods, niobium crucibles can be divided into four types: stamping, machining, sintering and welding. in:
Stamped niobium crucible
Stamping niobium crucible is produced by selecting high-quality niobium plate or niobium foil, using a suitable mold for single or multiple stamping, and finally producing qualified products. The process has moderate cost, high dimensional accuracy and relatively high mechanical properties, and is suitable for the production of small and medium-sized crucibles.
Processing niobium crucible
The machining of niobium crucibles is to select high-quality niobium rods, and finally produce qualified niobium crucibles through turning. The niobium crucible produced by this process has excellent mechanical properties, but a large amount of niobium material is wasted, and the price of niobium material is relatively expensive, so the cost of the niobium crucible is relatively high.
Sintered niobium crucible
The sintered niobium crucible is to select the appropriate niobium powder, press it by isostatic pressing technology, and then carry out vacuum high-temperature sintering to produce the niobium crucible blank, and then cooperate with mechanical processing to finally produce the required size. This process is suitable for the production of medium and large niobium crucibles.
Welded niobium crucible
Welded niobium crucible is rolled niobium plate or niobium foil of appropriate size, welded at the joint, welded a circular plate at the other end of the cylinder, and finally carried out proper surface and weld treatment, dimensional correction, and finally produced a qualified crucible . The production cost of this process is low, and it is suitable for industries that do not have strict requirements on the size of the crucible.
According to different shapes, niobium crucibles can be divided into round, conical, square, rectangular, cylindrical, boat-shaped, etc., and can be widely used in rare earth smelting, high-temperature sintered plates, chemical corrosion-resistant containers, sputtering evaporation containers, etc.
Application of niobium crucible
Niobium crucibles have strong high temperature resistance and deformation resistance, and can be widely used in rare earth smelting, high temperature sintered plates, chemical corrosion resistant containers, sputtering evaporation containers and other occasions.
| Product name | Wholesale high-quality high-strength high-density corrosion-resistant niobium crucibles |
| Density | 8.53g/cm3 |
| Purity | 99.95% min niobium |
| Melting point | 2468℃ |
| Technique | Sintering, Stamping, Spinning |
| Shape | Crucible, cup, pot, container |
| Dimension | According to customer's needs or drawings |
| Feature | High temperature resistance, high corrosion resistance |
| Application | Vacuum coating industry, medical industry, electronic industry |
Technical specifications
Diameter(mm)
Thickness(mm)
Height(mm)
Surface finish
inner surface finish
inner bottom finish
30-50
2-10
≤200
≤Ra2.0
≤Ra2.4
≤Ra2.8
50-100
3-15
≤300
≤Ra2.0
≤Ra2.4
≤Ra2.8
100-150
3-15
≤350
≤Ra2.0
≤Ra2.4
≤Ra2.8
150-200
5-20
≤400
≤Ra2.0
≤Ra2.4
≤Ra2.8
200-300
8-25
≤500
≤Ra2.0
≤Ra2.4
≤Ra2.8
300-400
8-30
≤600
≤Ra2.0
≤Ra2.4
≤Ra2.8
400-450
8-30
≤650
≤Ra2.0
≤Ra2.4
≤Ra2.8
450-600
8-35
≤800
≤Ra2.0
≤Ra2.4
≤Ra2.8
Specifications
1.According to different processing methods, tungsten crucibles for vacuum coating can be mainly divided into sintered molding, press molding, spinning molding, turning forming and welding forming.
2.Turning forming is mainly applied. We recommend the working temperature of the tungsten crucible for vacuum coating should be controlled below 2600℃.
3.We can produce tungsten crucible for vacuum coating according to the customer drawing.
Features:
1. High Temperature Resistance
2. Low Pollution
3. Long Service Life
4. Easy to machine
5. Good bio compatibility
6.Good corrosion resistance
Applications:
1. Sapphire crystal growing furnace industry
2. Vacuum coating industry
3. Sintering metal mold of high melting point
4. Rare earth smelting furnace
5. Quartz glass melting furnace
6.Widely used in other industries: machinery processing and medicine field.
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