Electrode columns made from carbon and graphite are screwed together from
individual elements, for example, the electrodes and nipples. The elements have
directionally structured contact surfaces. Such a structure of the contact surfaces
gives rise to the elements of a column demonstrating increased resistance to loosening
after intensive machine screwing or screwing applied by hand, which, therefore,
is often inadequate, whereby a higher level of operational reliability is achieved,
in particular, in the case of electrode columns that are screwed together by hand.
