Electrophoretic coating (electro-coating) is a coating method that uses an applied electric field to migrate particles and pigments, such as resins and resins, which are suspended in electrophoretic solution, and deposited on the base surface of one of the electrodes. The principle of invention of electrophoresis coating and at the end of 1930s, but the development of the technology and industrial application after 1963, electrophoresis coating is a kind of special coating developed in recent 30 years is the formation method, construction technology has practical significance for waterborne coatings. Water soluble, non-toxic, easy to control the characteristics of automation, automotive, building materials, hardware, home appliances and other industries have been widely used.

Electrophoresis coating is the conductive coated workpiece, as cathodic electrophoretic coating steeping in water dilution, the concentration is relatively low in (or anode), in the groove of the anode electrophoresis equipment and the corresponding (or cathode), direct current through a certain period of time in between the two, through physical and chemical the effect of precipitation in the paint is coated on the workpiece, a coating method to form a uniform, water insoluble film.

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