An electrophoresis test device and a mixing tank process using the same

Abstract

The invention discloses an electrophoresis test apparatus and a bath blending process using the same. The process comprises the following steps: sampling of solutions respectively in a new bath and in an old bath; mixing; detection of parameters of mixed bath solutions; loading of the mixed bath solutions onto the electrophoresis test apparatus for detection of the physical property parameters of an electrophoresis paint film; etc. According to the invention, small-scale small-dosage test before normal bath blending is carried out by using the electrophoresis test apparatus; the usage amounts of the solutions in the new bath and in the old bath during bath blending test are small; preparation is rapid; the solutions of a variety of ratios can be used for the bath blending test; if test results cannot meet requirements in examination, ratios can be repeatedly changed for preparation of the solutions until process requirements are met; after each performance meet requirements, the solutions are added into a large bath in proportion for normal production; and thus, the problem of waste of cost due to batch quality accidents probably caused by direct bath blending in the prior art is overcome, and production risks are reduced.

Description

technical field [0001] The invention relates to an automobile painting test device and a paint debugging process using the device, more specifically, it relates to an electrophoresis test device and a tank mixing process using the device. Background technique [0002] Cathodic electrophoresis coating is a very important coating process in the production of car coating. The pre-treated body is driven by the conveying equipment into the water-soluble paint in the cathodic electrophoresis tank. Under the action of a DC electric field, the resin and pigment base material in the water-soluble paint are evenly precipitated on the surface of the cathode body, and deposited to form a water-insoluble paint film. Cathodic electrophoresis includes four processes: electrophoresis, electrodeposition, electroosmosis, and electrolysis. In the production process of electrophoretic coating, as the electrochemical reaction continues, the bath solution is continuously consumed and its quality ...

AI Technical Summary

Problems solved by technology

However, this method has the following defects: after the adjustment of the mixing tank is completed, the physical and chemical parameters of the mixing tank itself are often easy to meet the process requirements, but even so, due to the constant changes in the old electrophoresis tank solution, the appearance of the paint film produced in actual production is also not good. Some changes will occur and some defects will be formed, such as rough paint film, pinholes, mottled spots, shrinkage cavities, loss of gloss, etc. At this time, the production has already been carried out. When the performance of the paint film produced by the bath solution is not up to standard, quite a lot of defective products with the above defects have been produced, resulting in batch quality accidents

The present invention aims to solve the technical problem that cannot be produced in large quantities in the assembly line coating production process, and provides a kind of automobile coating pretreatment and electrophoresis production process, which has the advantages of less investment, less floor space, less operation and maintenance costs, and a Strong selectivity, improved product quality, etc.

However, this process does not involve the mixed tank process and the solution of related problems in the mixed tank process

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