Electric machines. The square rod on the image consists of volframe powder, which is compressed under high pressure. The volframe powder has been recovered in the Lumafabriken's tungsten mill, from the Swedish ore. The powder should, after sintering, heating to 3,000 degrees C and after hammering, drawing and spiraling used for light bulbs in bulbs. The rod is enough for 15 mil wire, if it is pulled down to mm diameter.

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Size: 1919px × 2605px
Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No

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