Causes of pitting on the surface of electrophoretic paint film and treatment method
During the process of electrophoretic processing of the product, paint film defects such as watermarks, shrinkage, pits, and piles of paint sometimes occur due to various reasons. Today we will analyze the pitting problems of the electrophoretic paint film. To know how to deal with pitting problems, we need to know what is pitting and what are the causes? The following Hongheshun electrophoretic paint manufacturers will analyze and explain to you.
The so-called pitting: refers to the phenomenon of foreign matter on the surface of the electrophoretic paint film. On the surface of the electrophoretic paint film after drying and curing, there will be hard particles with rough feel when touched by hand. Some are fine particles visible to the naked eye. This phenomenon is collectively called pitting. So what causes the pitting of the electrophoretic paint film? What are the solutions? Let ’s continue to listen to the technical staff of Hongheshun Electrophoretic Paint Manufacturer to analyze the common causes and solutions of pitting.
Causes of pitting: There are coarse particles in the electrophoresis bath.
Solution: Check the circulation system of the electrophoresis tank, or replace the filter bag (cotton core) to increase the circulation filtration strength of the electrophoresis tank fluid.
Sting cause 2: There are dust particles in the curing oven, which are attracted to the surface of the workpiece.
Solution: Regularly clean the inner wall of the oven to remove dust.
Stinging cause 3: Incomplete cleaning before electrophoresis, and particles are present on the workpiece during electrophoresis
Solution: strengthen pre-treatment water washing and degreasing, or frequently change the washing water before electrophoresis, or increase the number of cleanings.
Stinking cause 4: The environment in the production workshop is poor, and floating objects such as dust in the air are adsorbed on the workpieces in the drainage area, which affects the quality of the paint film.
Solution: Clean up the sundries in the production workshop, improve the sanitation of the workshop, and prevent dust and floating materials from appearing in the production workshop.
Sting cause 5: Particles on the surface of the metal workpiece itself, such as burrs, etc.
Solution: Check whether there is a problem on the surface of the workpiece. If there is a problem, you need to solve the defect of the product itself and perform hanging electrophoresis.
Shenzhen Hongheshun Technology Co., Ltd. is a cathodic electrophoretic paint manufacturer with independent research and development and strong electrophoretic technology. The company has specialized technical personnel responsible for proofing and solving problems in customer production. Meet the customer's performance requirements, and develop the process and production process for the customer's proofing. The design of the electrophoresis process is reasonable, which can better meet customer production needs while saving capital investment. At the same time, the company has professional electrophoresis technical engineers to provide after-sale guarantee services to ensure the smooth production of electrophoresis coating.
Friends who need electrophoretic paint or electrophoretic equipment can visit the website: http://luyzsw.com/ for more information, or call: 0755-89264486 for consultation.