Brochure/Catalogue

5. Electro-polishing
The Klippon
®
TB enclosure range is supplied as
standard with an electro-polished nish which
increases corrosion resistance and reduces surface
deposits and germs. We have installed one of the most
modern computer-controlled electro-polishing facilities
in the world at our production site. This facility was
designed and optimised especially for electro-polishing
our stainless steel enclosures.
INFO: The electro-polishing process
The enclosures are hung in variably sized titanium units,
contacted and then dipped into a pool under computer
control. This pool contains a mixture of phosphoric and
sulphuric acids; this is referred to as the electrolyte.This
pool contains a mixture of phosphoric and sulphuric acids;
this is referred to as the electrolyte. The enclosures are
then anodised in a DC circuit. Up to 1500 A is applied to
each enclosure. Afterwards, leftover electrolyte is rinsed
off during a six-stage rinsing process that reaches into
the surface pores. Finally, a hot bath in deionised water is
used to free the surface of calcium carbonate residue. The
enclosure is then dried automatically.
INFO: Characteristics
• Less chance for surface germs and deposits
• Prevents discolouration of the enclosure surface
• Passivation of the surface
• Removal of surface contaminants
• Decorative gloss
• Pure metal, voltage-free surfaces
• Good corrosion resistance and fatigue strength
• Reduced formation of deposit coatings
• Optimal when welding and soldering
A closer look at Weidmüller’s production of stainless steel enclosures
A cross-section of the enclosure
surface before the
electro-polishing:
Germs and dust take hold easily
on the rough enclosure surface
which could lead to a higher risk of
corrosion.
A cross-section of the enclosure
surface after the electro-polishing:
The electro-polishing process
removes the spikes and thus
smooths the surface. This reduces
nucleation and signicantly
improves the corrosion resistance.
18 2454030000