A family's day with Tungsten
We leave the mother at the golf course to have have a look at the
children.
Daughter and Son:
They both left home after breakfast and use the train to go to school.
A new electric locomotive with several thousand horse power accelerates the train with ease. In the engine we find high voltage switches.
electric locomotive
Tungsten-copper arcing contacts are used for high performance switches
with switching currents up to 100 kA.
Their contact zone consists of Tungsten-Copper parts, which are
resistant to spark erosion. The engine gets the current from the overhead
contact line, which has a special profile to withstand the high velocity at
which the train is driving under the wire. For its manufacture Cemented Carbide
drawing dyes are used and the same is true for all the wires we find in the
engine. The thin copper sheet parts of the engine and the transformers were die
cut by the use of Cemented Carbide tools.
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