The basic process of electroplating is a complex and delicate process, which is usually divided into three parts: pre-plating preparation, electroplating itself and post-plating treatment.
Author: Marisa
The basic process of electroplating is a complex and delicate process, which is usually divided into three parts: pre-plating preparation, electroplating itself and post-plating treatment.
Pretreatment All processes before electroplating are collectively referred to as pretreatment. The purpose is to trim the surface of the workpiece, remove grease, rust, oxide film, etc. on the surface of the workpiece, and provide the required electroplating surface for the subsequent coating deposition. Pretreatment mainly affects the appearance and bonding strength. According to statistics, 60% of electroplating defects are caused by improper pretreatment.
Pretreatment methods include: sandblasting, grinding, polishing, hot dip degreasing, ultrasonic degreasing, electro-degreasing, pickling activation, etc.
Corrosion-resistant electroplating: chemical degreasing - hot water washing - cold water washing - strong etching - cold water washing - electrochemical degreasing - hot water washing - cold water washing - weak etching - cold water washing - electroplating
Decorative electroplating: polishing - solvent rough degreasing - drying - chemical degreasing - hot water washing - cold water washing - weak etching - cold water washing - electrochemical degreasing - hot water washing - cold water washing - weak etching - cold water washing - electroplating
Small parts electroplating: degreasing - cold water washing - weak etching - cold water washing - electroplating
2. Electroplating obtains the required coating on the surface of the workpiece.
The core procedure of the whole process.
3. Post-processing After electroplating, various treatments are performed on the coating to enhance the various properties of the coating, such as corrosion resistance, anti-discoloration ability, solderability, etc.
Post-processing methods include: passivation, neutralization, coloring, anti-discoloration, sealing, etc.