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Vacuum Tube
Characteristics：
Vacuum tubes assimilate the advanced 12 layers of spattering deposition of trivalent technology, high borosilicate glass, gradual change of ALN/AIN-SS/CU selective complex absorptive coating.Ang these make vacuum tubes have high performance of absorption and low reflection ratio. Through the interlayer, vacuum has a unique effect of thermo, with its temperature up to 380℃ of idle sunning, performing a strong heating ability.
Technical Parameters:
Tube structure |
All-glass double deck co-axial structure |
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Glass material |
High Borosilicate 3.3 glass |
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Outer tube diameter and glass thickness |
φ47±0.7mm; Glass thickness 1.6±0.15mm |
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φ58±0.7mm; Glass thickness 1.6±0.15mm |
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φ70±0.7mm; Glass thickness 1.6±0.15mm |
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Inner tube diameter and glass thickness |
φ37±0.7mm; Glass thickness 1.6±0.15mm |
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φ47±0.7mm; Glass thickness 1.6±0.15mm |
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φ58±0.7mm; Glass thickness 1.6±0.15mm |
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Tube length |
800mm, 1200mm, 1500mm, 1600mm, 1800mm, 1900mm, 2000mm, 2100mm, etc |
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Absorption coating property |
Coating material |
CU/SS-ALN(H)/SS-ALN(L)/ALN |
Sediment method |
Three target magnetron spattering plation |
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Absorptive ratio |
a=0.92-0.96(AM1.5) |
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Emission ratio |
e=0.04-0.06 (80℃±5℃) |
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Vacuum degree |
P≤5.0x10-3 （PA） |
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Stagnation temperature (temperature inside of empty evacuated tubes |
260-350℃ |
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Average heat loss |
ULT0.4-0.6W/（㎡*℃） |
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Hail resistance |
φ30mm |
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Pressure-endure |
1Mpa |
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