Manufacturing process of tungsten crucible:
We have special production in 

tungsten crucible

 manufacture. The process includes isostatic pressing, mechanical processing, sintering, mechanical processing, detection check and other further processing.

Tungsten crucible applications:
Tungsten crucible is widely used to the sapphire growth furnaces, quartz glass melting furnace, crystal furnace, induction furnace, sintering metal mold of high melting point, electronic beam coating, and rare earth smelting furnace.

Properties of tungsten crucible:
Our tungsten crucible has advantages of high purity, high density, low resistivity, high strength, low thermal expansion, erosion resistance. In addition, the surface of our tungsten crucible polished, therefore, there is no crack and the inside and outside wall is smooth.

Specifications of tungsten crucible:
 
Condition: Sintering or forging.

Material	Density	Size
w 99.95%	19.1g/cm3(Forging)	Diameter:10-100mm;  High:10-120mm
w 99.95%	18.3g/cm3(Sintering)	Diameter:100-650mm; High:50-850mm

Measurements and tolerances(mm)

Delivery condition	Specification		Thickness	Roughness(μm)
	Diameter	Height
Sinter	10~700	10~1000	5~30
Finished sinter	10~650	10~850	7~25	<2.5

Manufacturing process and equipment

Item	Process	Equipment	Quality Check point
1	Tungsten powder		1.Purity of tungsten powder
2	Sieving	High frequency vibrating screen	2.Fsss,HB
3	Mixed powder	V shape mixer	3.Green strength
4	Isostatic pressing	Isostatic pressing machine	1.Measurement of rough-processed billet
5	Rough billet lathing	CNC vertical turning machine	2.Surface quality of rough-processed billet
6	IF sintering	IF induction sintering furnace	1.Outside measurements of finished product