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Molybdenum rod
ⅠPhysical and chemical properties
1 Forging molybdenum rod
1.1 Purity：Mo≥99.95%；
1.2 Density≥10.1g/cm3；
1.3 Linearity：≤1%；
2 Sintering molybdenum rod
2.1 Purity ：Mo≥99.95%；
2.2 Density：≥9.5 g/cm3；
2.3 Linearity：≤2%
ⅡMeasurements and tolerances
Unit：mm
|
Delivery condition |
Diameter |
Diameter tolerance（%） |
Max length |
|
Forging or sintering |
＜10 |
±0.1 |
2500 |
|
10~30 |
±0.1 |
2000 |
|
|
30~60 |
±0.1 |
1500 |
|
|
60~100 |
±0.2 |
1000 |
|
|
100~200 |
±0.2 |
600 |
|
|
＞200 |
Manufacture according to customers’ requirements |
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Ⅲ Manufacture process and Equipment
|
Sintering molybdenum rod |
|||
|
Item |
Process |
Equipment |
Quality check point |
|
1 |
Mopowder |
|
|
|
2 |
Sieving |
High frequency vibrating sieve |
1 Purity of molybdenum powder |
|
3 |
Mixed powder |
V shape mixer |
2 Fsss，HB |
|
4 |
Check |
|
|
|
5 |
Isostatic pressing |
Isostatic pressing machine |
1 Measurement |
|
6 |
Check |
|
2 Unit net weight and surface quality |
|
7 |
IF sintering |
IF induction sintering furnace |
1 Measurements, unit net weight, |
|
8 |
Alignment |
200Tpressing machine |
2 Density ,linearity、surface quality |
|
9 |
Check |
|
3 Quality standard：GB/T17992-1999 |
|
10 |
Package |
|
4 Show certificate of quality |
Forging molybdenum rod
| Item | Process | Equipment | Quality check points |
| 1 | Sintering Mo rod | Density of product | |
| 2 | Forge | Forging air-hammer | Measurements |
| 3 | Machining | Lathe, grinder | Linearity, surface quality |
| 4 | Check | Quality standard: GB/T 17792-1999 | |
| 5 | Package | Show certificate of quality |
Molybdenum rod is used as electrodes for quartz glass melting, seed shafts for sapphire growth furnace, heating elements
in high-temperature furnace.
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