Electrophoretic coating method

Abstract

The invention discloses an electrophoretic coating method. The method includes the steps of workpiece pretreatment, electrophoretic coating, on-tank cleaning, ultra-filtration washing and drying. An electrophoretic tank is installed between two side plates; the side plates are installed at the top end of a base plate and used for supporting; and a control table is fixedly installed at the position, corresponding to one side of a drying chamber, of the top end of the base plate. The structure is scientific and reasonable, and usage is safe and convenient; dust fibers attached to the surface ofa workpiece in the moving process can be reduced through a driving motor, the alternate electrophoretic tank, a sliding plate and a mounting connecting plate, the rejection rate of the workpiece is reduced, and the workpiece electrophoretic coating and drying efficiency is improved; and through the arrangement of a water suction pump, an electromagnetic attracting pipe, a separation filter screen,grading filter screens and a storage hopper, iron-containing substances and impurities in the electrophoresis liquid can be collected, the electrophoresis liquid can flow back for use, and the utilization rate of water resources is increased.

Description

technical field [0001] The invention relates to the technical field of electrophoretic coating, in particular to an electrophoretic coating coating method. Background technique [0002] Electrophoretic coating is a coating method that uses an external electric field to make the particles such as pigments and resins suspended in the electrophoretic liquid directional migrate and deposit on the substrate surface of one of the electrodes. The principle of electrophoretic coating was invented in the late 1930s, but it was developed This technology was applied in industry after 1963. Electrophoretic coating is a special coating film formation method developed in the past 30 years. It is the most practical construction process for water-based coatings. It is water-soluble, non-toxic, Easy automatic control and other characteristics, it has been widely used in industries such as automobiles, building materials, hardware, and home appliances; [0003] At present, in the electrophor...

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Problems solved by technology

[0004] The present invention provides a technical solution, which can effectively solve the problem in the above-mentioned background technology that after electrophoresis in the electrophoresis tank, the workpiece will be directly taken out for drying. The drying chamber and the electrophoresis tank are separated and independent, and the workpiece will be moved to the drying chamber after electrophoresis. The required distance is long, and dust fibers are easily attached to the surface, which leads to poor electrophoretic coating effect of the workpiece, which easily leads to an increase in the reject rate of the electrophoretic coating of the workpiece, and affects the efficiency and effect of the electrophoretic coating of the workpiece.

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