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Tungsten Crucible

Source: tungsten crucible

Tungsten has the characteristics of high melting point, high strength and hardness, good high temperature performance, low resistivity, small expansion coefficient, small electronic work, etc., is the most widely used high temperature resistant metal materials.

Tungsten crucible is one of the metal tungsten products, mainly used as a high-temperature furnace container, can be used in a vacuum or inert gas at 2600 degrees Celsius.

According to the requirements of customers, we can provide the general density (less than 18.3g/cm3) and high density crucible (more than 18.5g/cm3).

In the smooth surface is less than 1.6, even at high temperature for the product in the container of zero pollution.

After special process treatment, the deformation of the bottom of the crucible was significantly improved.

Manufacturing process

We have four kinds of tungsten crucible for you to choose: powder metallurgy sintering integral forming, tungsten sheet riveting, tungsten sheet stamping, tungsten plate spinning.

Powder metallurgy sintering process used most widely, suitable for large size for preparing the crucible, the diameter 100mm~700mm, common crucible shapes are round, square, rectangular type, V type, according to the requirements of customers, we can provide conventional density (less than or equal to 18.3g/cm3) and high density crucible (less than or equal to 19/cm3).

The hot bending forming process of the rolling tungsten plate is adopted in the riveting and welding, and the welding is adopted to prepare the large size thin wall crucible, but the strength is low, but the cost is relatively low due to the limitation of the thin wall.

For the micro and small tungsten crucible, the machining process of the tungsten rod can be used for turning or stamping.

The spinning forming is suitable for producing thin wall tungsten crucible, the technology demand is high, the market acceptance is not high.

Product application

Tungsten crucible, which is made of tungsten metal, has the characteristics of high melting point, high hardness, high temperature performance, low resistivity, small expansion coefficient and small electronic work. It is an important part of sapphire crystal furnace.

Tungsten crucible products through the National more than 100 sapphire crystal factory, quartz glass factory, high temperature heat treatment plant and rare earth smelting plant for many years, the effect is excellent.

Product specifications

Conventional density: 17.8 g/cm3 g/cm3~18.3;

Special process density: greater than 18.5 g/cm3.

Typical specification for tungsten crucible

Note: all specifications can be machined to meet customer high accuracy requirements.

diameter(mm)

wall thickness(mm)

length(mm)

30-50

8-10

<1300

50-100

8-15

100-150

10-15

150-200

12-20

200-300

15-20

300-400

15-30

400-450

15-30

450-550

15-30

550-650

25-35

650-750

25-35

 


Shaanxi Yunzhong Industry Development Co., Ltd