Pretreatment of Electro Plating Line--Degreasing

In the electroplating degreasing process, it is one of the key steps to ensure the quality of electroplating.

Author: Marisa

Electroplating is a physical and chemical process that uses electrolysis to form a uniform, dense, and well adhered coating on metals, alloys, or other conductive materials. In the electroplating process, the cleanliness of the workpiece surface directly affects the quality of the coating. Especially in the electroplating degreasing process, it is one of the key steps to ensure the quality of electroplating.

Before electroplating, if the workpiece is not thoroughly degreased, it will have the following adverse effects on the quality of the coating:

1. Decreased adhesion: Oil stains can form an isolation layer on the surface of the workpiece, preventing the electroplated metal from directly forming a metal bond with the workpiece surface, thereby significantly reducing the adhesion between the coating and the workpiece. This will make the coating easy to peel off, seriously affecting its service life and aesthetics.

2. Causing coating holes: Organic substances such as grease and wax can form bubbles in the plating solution, adhere to the surface of the workpiece, and cause local coating failure, resulting in defects such as pinholes and pores. These holes not only reduce the appearance quality of the coating, but also weaken its protective and mechanical properties.

3. Surface roughness: Incomplete oil removal during electroplating can cause the coating to be locally too thick or uneven, resulting in a rough surface and affecting the appearance and smoothness of the product. In some application fields that require high precision, this may result in products not meeting usage standards.

4. Uneven coating color: Residual oil stains can cause uneven current distribution, resulting in changes in the coating color and inability to maintain uniformity, affecting the appearance and quality of the product.

In summary, the degree of thorough degreasing of workpieces directly affects the quality of electroplating coatings. Therefore, in electroplating production, attention should be paid to and use special electroplating degreasing powder, and chemical degreasing, ultrasonic cleaning and other methods should be used to thoroughly remove oil stains on the surface of the workpiece. At the same time, it is necessary to strengthen process control, regularly inspect and maintain cleaning equipment to ensure oil removal efficiency, thereby ensuring the quality of electroplating product coatings and meeting the requirements of different application fields.