A device for increasing the thickness of the electrophoretic film on the chassis of the vehicle body

Abstract

The invention discloses a device for improving thickness of a car body chassis electrophoresis film. The device includes an electrophoresis tank; the electrophoresis tank is internally provided with anodes and a tank liquid; a plurality of anodes are arranged on the side walls and the bottom surface of the electrophoresis tank, the anodes on the side walls are each externally provided with a protective separation film, and the anodes on the bottom surface are naked anodes; the superficial area of the anodes on the bottom surface is 0.4%-1.6% of the superficial area of an electrophoresis car body as a cathode, the superficial area of the anodes on the side walls is 20%-25% of the superficial area of the electrophoresis car body as the cathode. Through a method of transformation and increasing of related devices in the prior art, the thickness of the car body chassis electrophoresis film is increased, the transformation cost is low, the transformation period is short, at the same time, the thickness of the chassis film is increased on a basis of no increase of the thickness of films of other parts, and the increase of cost brought by the increase of the thickness of the chassis electrophoresis film is reduced to a greatest extent.

Description

technical field [0001] The invention relates to the field of automobile painting, in particular to a device for increasing the thickness of an electrophoretic film on a chassis of a vehicle body. Background technique [0002] At present, in order to meet the anti-corrosion requirements of the car body, electrophoretic paint is applied by cathodic electrophoresis all over the world to improve the anti-corrosion performance of the car body. Since the anode system with an anode diaphragm cannot be installed at the bottom of the tank, in practical applications, the anodes in the cathodic electrophoresis tank are distributed on both sides of the tank in a tubular or plate shape, and the anode is 20% of the area of ​​the electrophoresis body (cathode) -25% between. In the actual production and application process, since the electric field intensity on both sides of the tank is denser than that on the top and bottom, the film thickness on the top and bottom is thinner than that on...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages in the prior art that the thickness of the electrophoretic film on the chassis of the car body cannot meet the use requirements, resulting in weak anti-corrosion ability, and provide a device for increasing the thickness of the electrophoretic film on the chassis of the car body

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