W and Mo Parts in Sapphire Crystal Furnace Thermal Field
FOTMA specialized in Sapphire crystal growth furnace "thermal field "parts. Set the domestic traditional process, structure, and in recent years the foreign advanced type furnace, continue to market the sapphire crystal furnace tungsten meshes for heating element, long cage structure tungsten heater, the tungsten crucible/molybdenum crucible, heating element, tungsten tube, heat insulation screen, support and base, seed rod, crucible cover etc. sapphire crystal growth furnace thermal field components. And we can provide customers with high-quality 30 kg, 60 kg, 90 kg, 120 kg full set of sapphire crystal growth furnace tungsten, molybdenum parts of thermal field and thermal field.
Tungsten heating elements :
Purity: 99.95%
Density: 19.1g/cm3 Application temperature environment: ≤2400ºC
Cooper base: Cu≥99.95%
Density:≥8.8%
Application temperature environment: ≤1000ºC
| Tungsten Rod Heater |
Tungsten Rod Diameter |
Diameter Tolerance |
Heating Body Width |
Width Tolerance |
Heating Body Height |
Height Tolerance |
Bottom Shape and Bending Radius Design |
| 3.0 |
±0.1 |
≤650 |
±1 |
≤1200 |
±1 |
Customized According to Customer Requirements |
| 4.0 |
±0.1 |
≤600 |
±1 |
≤1150 |
±1 |
| 5.0 |
±0.1 |
≤550 |
±1 |
≤1100 |
±1 |
| 6.0 |
±0.2 |
≤550 |
±1 |
≤1050 |
±1 |
| 7.0 |
±0.2 |
≤500 |
±1 |
≤1000 |
±1 |
| 8.0 |
±0.2 |
≤500 |
±1 |
≤950 |
±1 |
| 9.0 |
±0.2 |
≤450 |
±1 |
≤900 |
±1 |
| Copper Base |
Customized according to customer requirements, processed by CNC machine tools. |
| Tungsten Rod Heater |
Serial Number |
Production Process |
Production Equipment |
Quality Check Point |
| 1 |
Tungsten rod |
|
- Physical and chemical properties;
- Length, straightness, diameter, ovality;
- Surface quality;
|
| 2 |
Clean |
|
| 3 |
Test |
|
| 4 |
Bending or Stamping |
Bending Machine |
- Length and width scale;
- Arc radius;
- Surface quality;
|
| 5 |
Correction |
Correction Die |
| 6 |
Test |
|
| 7 |
Wire Cutting |
Wire Cutting |
- Surface quality;
- Overall dimensions, arc radius, tolerance according to the drawing;
- Present the quality certificate;
|
| 8 |
Clean |
|
| 9 |
Test |
|
| 10 |
Package |
|
Tungsten heater components as sapphire crystal growth furnace heat source, the tungsten crucible inside the liquid turbulence, radial temperature gradient has a decisive role. As a result, high purity, high density, well-made, reasonable design of tungsten heater component to control the quality of the sapphire crystal, the service life of the energy conservation and is of great significance.
Product name: tungsten net heating element
Material grades: W1
Execution standard: GB3875-83
Product specifications: Ф0.3-Φ 4
The surface of the tungsten wire: bright surface Tungsten wire mesh is composed of tungsten preparation for ultra high temperature vacuum annealing furnace.
Tungsten ,molybdenum crucible.
Technological process: W,Mo powder-pressed-sintered-forged-technological processing- finished products inspected-packaged-delivered.
| Product |
Tungsten and Molybdenum Crucible |
| Surface |
Turning, grinding, sintering crucibles |
| Purity |
99.95% |
| Density |
≥10.1g/cm³ |
| Specification |
Ф30-450mm(Maximum outer diameterФ450mm, Maximum inner diameterФ430mm) Height 30-800mm |
| Executive Standard |
American StandardB386 B387 and GB |
| Impurity Content Report(%) |
| Fe |
Ni |
C |
AL |
O |
N |
|
| 0.004 |
0.0006 |
0.001 |
0.0005 |
0.0048 |
0.002 |
|
| Si |
Ca |
Mg |
Cd |
Sb |
Sn |
|
| 0.0013 |
0.001 |
0.0005 |
<0.001 |
<0.0005 |
<0.0005 |
|
| P |
Cu |
Pb |
Bi |
Mo |
|
|
| <0.001 |
<0.0005 |
<0.0005 |
<0.0005 |
>99.95% |
|
|
| Diameter(mm) |
Tolerance |
| <6 |
±0.1 |
| 6-30 |
±0.2 |
| 30-120 |
±0.3 |
| 120-400 |
±0.5 |
| 400-1000 |
±0.8 |
Seed Crystal Clip
A.Physical and chemical properties:
1.Purity: Mo≥99.95%,W≥99.95%;
2.Density: Mo≥10.2g/cm³,W≥19.2g/cm³;
3.Temperature environment: ≤2300ºC;
4.Thermal expansion coefficient (0-1600C):Mo:6×10-6,W:4.98×10-6
5.Yield strength: Mo(1600ºC):50MPa,W(2080ºC):25MPa;
6.Perfect re-crystallize temperature :W 2050ºC,Mo 1050ºC.
B.Product dimensions and tolerances: seed crystal rod custom processing specific dimensions and tolerances according to customer's drawings. More than long sapphire crystal furnace tungsten molybdenum parts according to the drawings of the technical requirements for the design and manufacture, meet the requirements of customers, implement GB/T1804-200, GB1801-79, GB3875-83, GB8918-2006 and FOTMA internal control standard-inspection-packaging-delivery technology processing.
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