Molybdenum Crucible
Molybdenum crucible is sintered or forged from the ultimate material—molybdenum powder. Generally speaking, molybdenum crucible is used pure molybdenum, for its purity can prevent melting metal powder from mingling. The density of molybdenum crucible is more than 9.8g/cm3, and its working temperature is among 1100℃. Therefore, it is another ring choice, besides tungsten crucible in metal melting industry.
Molybdenum crucible is widely used in metallurgical industry, rare earth industry, artificial crystal, and machinery.
There are three technologies using in making molybdenum crucible, as following:
|
(1) pressing --> sintering --> tooling. (2) pressing --> sintering --> forging --> tooling. (3) sheets --> deep drawing --> tooling |
In our company, molybdenum crucible making has a set standard in its size and tolerance. Please refer to the following table.
|
Delivery condition |
Size(mm) |
Tolerance(mm) |
||
|
Diameter(mm) |
High(mm) |
Diameter(mm) |
High(mm) |
|
|
Sintering |
10-500 |
10-600 |
±5 |
±5 |
|
Forging |
10-130 |
10-200 |
±1 |
±2 |
|
Sintering and Machining |
100-450 |
10-500 |
±0.5 |
±1 |
Impurity content is another consideration in making molybdenum crucible:
|
Fe:0.0045% |
Al:0.001% |
Si:0.001% |
Mg:0.001% |
|
Ca:0.001% |
Ni:0.001% |
Ti:0.001% |
C:0.002% |
|
P:0.0008% |
Pb:0.0001% |
Bi:0.0001% |
Na:0.001% |
|
K:0.001% |
Sb:0.001% |
Cr:0.016% |
W:0.01% |
