How to Make Tungsten Filament

Details: Category: Tungsten Information; Published on Thursday, 30 April 2015 11:58

Firstly, place the powder into the iron or steel-made tube and then to shape through isostatic pressing which ensures force uniformity of the bar. After pressing, the powder shapes in a small size and can be easily removed. And then sinter the bar in sintering furnaces at at least 1,000℃. The time should be adjusted according to the size of the bar. The next step is to swage in the rotary swaging machine which will enhance the property.

Upon completing the shaping, the next begins drawing. Generally, a tungsten bar weighed 1.5 kilograms can be made into about 40-metered tungsten filament with the diameter of 1.588mm. This is all about the production of tungsten filament.

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