Molybdenum Crucible
Molybdenum crucible is widely used in metallurgy, chemical industry and rare earth manufacturing enterprises as a container for melting metals and alloys. In recent years, with the more and more serious pollution caused by the use of traditional resources in China, the development of new green energy has become a top priority, which is more obvious in the monocrystalline silicon, polycrystalline silicon, sapphire preparation industry. The new energy raw materials such as silicon and sapphire are prepared at very high temperature, so mo crucible with very high temperature resistance is usually used.
Specification of Molybdenum Crucible
Forge molybdenum crucible
Purity
Density
Sizes
Tolerance
Wall thickness
roughness
99.95%
≥10.1g/ cm3
Dia(mm):
Height(mm):
Dia:
Height:
4-20mm
Ra=1.6mic
10-500
10-750mm
+/-5.0mm
+/-5.0mm
Sinter molybdenum crucible
Purity
Density
Sizes
Tolerance
Wall thickness
roughness
99.95%
≥9.8g/ cm3
Dia(mm):
Height(mm):
Dia:
Height:
8-20mm
Ra=1.6mic
10-500
10-750mm
+/-5.0mm
+/-5.0mm
Sintering and Mechining
Purity
Density
Sizes
Tolerance
Wall thickness
roughness
99.95%
≥9.8g/ cm3
Dia(mm):
Height(mm):
Dia:
Height:
8-20mm
Ra=1.6mic
10-450
10-450mm
+/-5.0mm
+/-1.0mm
urity(%)
Ag
Ni
P
Cu
Pb
N
<0.0001
<0.0005
<0.001
<0.0001
<0.0001
<0.002
Si
Mg
Ca
Sn
Ba
Cd
<0.001
<0.0001
<0.001
<0.0001
<0.0003
<0.001
Na
C
Fe
O
H
Mo
<0.0024
<0.0033
<0.0016
<0.0062
<0.0006
>99.97
Application of Molybdenum Crucible
Since the melting point of molybdenum is as high as 2610℃, molybdenum crucible is widely used in the core vessel of sapphire single crystal growth furnace, quartz glass melting furnace, rare earth smelting furnace and other industrial furnaces, and its working temperature environment is generally above 2000℃. Especially for the sapphire single crystal growth furnace, molybdenum crucible with high purity, high density, no internal cracks, precise size, smooth inner and outer walls, etc. plays a key role in the success rate of seed crystal, quality control of crystal drawing, decrystallizing and sticking pot and service life of sapphire crystal growth process.
Production Process of Molybdenum Crucible
Molybdenum powder – sieving – billet – isostatic pressing – rough billet car processing – medium frequency sintering – fine car processing – packaging.
Features of Molybdenum Crucible
01.
High density
02.
Good corrosion resistance
03.
The surface roughness of tooled crucibles does not exceed Rz 6.3
04.
The use temperature below 2450ºC in vacuum or deoxidize atmosphere
05.
Manufactured based on customers’ requirement
