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Tungsten Coiled Filament
We are the manufacturer of single or multiple-strand tungsten coil filament for evaporation over 20 years, samples could be provided for your quality test.
Tungsten Coiled Filament
Bless uses high-quality tungsten wires as raw materials, and after automatic straightening, cleaning, and polishing, it finishes producing a tungsten heating coil for vacuum metalizing. Bless could provide single or multiple spiral tungsten heating coil for evaporation sources. We specialize in many shapes of filament heaters for coating.
$ Order Tungsten Heating Coil directly now.
What shape of tungsten heating coil Bless produce?
The diameter specifications can be customized according to customer requirements. W type, cup type, coil type, NC3 double type of tungsten coil heater for evaporation are available.
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Bless Production Process of Tungsten Filament
- Raw Materials - APT Tungsten Powder
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Bless: Uniform particle size B Company: The size of particle varies
| Company |
WO3 (%) |
Impurity (ppm) |
Poisson's ratio （g/cm3） |
FSSSS (um) |
Particle Size Distribution (%) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| +70 | -70+100 | -100+140 | -140+200 | -200+325 | -325 | |||||
| A company | 88.72 | 214.4 | 2.03 | 38.9 | 0.0 | 0.2 | 3.6 | 21.0 | 39.4 | 35.6 |
| Bless | 89.16 | 90.8 | 2.32 | 48.2 | 0.0 | 4.5 | 45.2 | 24.8 | 16.5 | 8.9 |
- Quality Inspection
. Flaw Detection
Corresponding tests for each process of Tungsten wire. Under flaw detection, there are Grade A (2 crack points per 100 meters), B, and C Grade. The more cracks, the more easily the filaments are broken during processing. We will choose different standards according to different requests for quality grades.
. Equipment
A rolling mill was introduced from Germany, which can deeply process the rod core, which can make the inside structure more uniform. Unlike the early traditional technology, are mainly surface processing.
. Property
The online measuring device in the wire drawing process can monitor the overall diameter uniformity.
The pictures shown are some of the tungsten evaporation filaments we have made.
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