company news about Tungsten Wire Performance

① High temperature performance. The working temperature of tungsten filament used in incandescent lamps is often between 2300 and 2800°C. Generally, the greater the power of the bulb, the higher the working temperature of the filament. It can be seen that the working temperature of the filament far exceeds the recrystallization temperature of the tungsten filament. At this time , under the action of its own weight, the filament segment between the two hooks will droop. In severe cases, the filament may droop until it collides with the glass shell of the bulb.

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② Room temperature performance. The room temperature performance of tungsten wire is reflected in the wire winding performance. Due to the long processing flow of tungsten wire, if the process management is not good, it is easy for the tungsten wire to produce many small cracks or become locally brittle, so that it is easy to break during winding. The fracture of the winding wire caused by cracks appears in the shape of whiskers, while the fracture caused by the brittleness of the wire appears in the shape of crystal planes.

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③Consistency of wire diameter. The poor consistency of tungsten wire diameter is an important reason why the photoelectric parameters of incandescent bulbs are out of tolerance, and some will also affect the service life of the bulb.