Method for electrolytic wax removal from automobile covering part

Abstract

The invention discloses a method for electrolytic wax removal from an automobile covering part. The method comprises the following operation steps: 1, an electrolytic wax removal solution is prepared, 4-trimethylsilyl styrene, sodium methallyl sulfonate, diethylene glycol chloroformate, a nonionic surfactant, a diffusion agent, tetrabutyl ammonium fluoride, sodium hexafluorophosphate and water are uniformly mixed, and then are continuously stirred for 30-40 minutes by adopting the rotate speed of 400-500 r / min; and 2, electrolysis is carried out, a workpiece is subjected to cathode electrolysis for 2-4 minutes, and is subjected to anode electrolysis for 1-2 minutes, then the workpiece is washed by hot water at the temperature of 50-60 DEG C, and the electrolytic wax removal is completed. The method for the electrolytic wax removal from the automobile covering part has the advantages that the electrolytic wax removal solution is green and environment-friendly, the wax removal effect is remarkable so that the wax on the workpiece surface can fall off quickly, and the service life of the wax removal solution can be effectively prolonged.

Description

technical field [0001] The invention belongs to the field of wax removal of automobile cover parts, and in particular relates to a method for electrolytic wax removal of automobile cover parts. Background technique [0002] In the past, organic solvents such as trichlorethylene have been used to remove wax before electroplating of automobile panels. However, organic solvents cause serious environmental pollution and high production costs, and have gradually been replaced by wax removal water. Although the dewaxing water cleaning process avoids the pollution of organic solvents such as trichlorethylene to the environment, it still has problems such as long dewaxing time and high energy consumption, and the metal surface is not hydrophilic after dewaxing with dewaxing water, so it is necessary to add a Alkaline stripping process, in the production, the "wax film" is often not clean, resulting in defects such as pitting and blooming on the surface of the electroplated coating. ...

AI Technical Summary

Problems solved by technology

[0002] In the past, organic solvents such as trichlorethylene have been used to remove wax before electroplating of automobile panels. However, organic solvents cause serious environmental pollution and high production costs, so they have been gradually replaced by wax removal water.

Although the dewaxing water cleaning process avoids the pollution of organic solvents such as trichlorethylene to the environment, it still has problems such as long dewaxing time and high energy consumption, and the metal surface is not hydrophilic after dewaxing with dewaxing water, so it is necessary to add a Alkaline stripping process, the "wax film" is often not clean during production, resulting in defects such as pitting and blooming on the surface of the electroplated coating

However, in the existing electrolytic wax removal process, since the detached wax will pollute the wax removal liquid, it is necessary to frequently replace the wax removal liquid