关键词: 电泳花纹；干湿不均；漆膜缺陷；汽车涂装

Abstract: The electrophoretic hash marking is one of the common quality defects in the production process of automotive painting. This type of defect not only affects the appearance quality of the coating but also affects the anti-corrosion performance, and has a significant impact on the on-site production rhythm of the painting workshop. Due to the different shapes and causes of electrophoretic hash marking, this article combines practical work experience to summarize four common types of electrophoretic hash marking on site: uneven dry and wet hash marking, alkaline corrosive hash marking, polluting hash marking, and phosphating corrosion hash marking types and their root causes. A summary study is conducted to eliminate such defects and form on-site control experience for effective control. This article is of great significance for subsequent on-site quality control and personnel indicators.

Key words: Electrophoretic hash marking; Uneven wetting and drying; Paint film defects;Automobile coating