Processes: Cataphoretic dip priming
KTL (cathodic dip coating): an electrochemical process where the workpiece is coated in an immersion bath. It is suitable for painting complicated structures and large quantities. The items to be painted are immersed in an electrically conductive aqueous dipping varnish and a direct voltage field is applied between the items to be painted and a counter electrode.
The basic principle of cathodic electrodeposition dip painting is to percipitate water-soluble binding agents on the surface of the article to be painted which acts as an electrode and in doing so, create a sealed, adhesive coating film. Prior to this, the workpiece has to be pre-treated in order to ensure a clean and active surface.
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