Sintered tungsten crucible
Sintered with tungsten powder the sintered tungsten crucibles are multi-purpose production in sintering furnace, large crystal growth furnace. Thickness of sintered tungsten crucibles is usually 8-12 mm; diameter is typically 100-550 mm; height is typically 50-700 mm. Such crucible Purity: W �?� 99.95%; density is usually up 18.2g/cm3, by special needs the density can up 18.8g/cm3 or more.
Features:
1.The overall density of sintered tungsten crucible is fairy high between 18g/cm3 to 18.3g/cm3;
2.Its chemical purity of sintered tungsten crucible can be above 99.95%;
3.The diameter of sintered tungsten crucible can be above 200mm;
4.The surface roughness of tooled crucibles does not exceed Rz 6.3;
5.The use temperature of sintered tungsten crucible should be below 2450�C in vacuum or deoxidize atmosphere.
6. The shapes and dimensions of crucibles are also made in accordance with customers' requirements.
material density size
W >99.95% 18g/cm318.3 g/cm3 Diameter: 100-550mm; Height:50-700mm
Stamped tungsten crucible
The tungsten crucibles can be produced of a tungsten plate by stamping, spinning, or welding. It can be used to produce single-use square or round crucible. Thickness typically 0.5 to 3 mm. Such tungsten crucible Purity: W �?�99.95%; density is usually up 19g/cm3
Forged tungsten crucible
The tungsten crucible can be made of tungsten rod by turning , generally they are smaller and with higher density. Usually the wall thickness 3-10 mm; diameter of 80 mm. They are widely used by sintering furnaces for ceramics and other materials
or vacuum evaporation coating machine. Purity: W �?� 99.95%; density are usually based on different diameters of up to 18.3 to 19g/cm3
Notice:
1.Before use, it is recommended that the consumer anneal (de-gas) crucibles in a vacuum without batch charging;
2.In a furnace, the annulment process should be supported with a vacuum at P< 10-3mmhg;
3.When preparing a sintered tungsten crucible for work, the consumer should not allow a sharp rise or fall in temperature, or abbreviate the recommended time periods for holding temperatures.
Applications
Tungsten crucible is mainly used used for rare earth,sapphire single crystal growth furnace , quartz glass,
Metal extracting, metallurgical industry, machinery processing, glass and ceramic industries, etc.
