What are some common issues encountered by electroplating plants when using decorative chromium additives? Let's take a look and propose solutions, hoping to provide some insights for electroplating plants.
Chromium plating on porous workpieces, with no chromium layer around the holes
Extensive hydrogen evolution at the cathode
Chromium plating exhibits low current efficiency and high current density. During the electroplating process, hydrogen gas is extensively evolved at the cathode. At pore locations, gas accumulates more densely. Due to the large volume of gas gathering, the plating solution around the pores is displaced, preventing chromium ions from discharging in the vicinity of the pores. Consequently, no chromium layer forms around the pores.
Treatment method: Plug the pores with lead, rubber, or plastic to facilitate the discharge of chromium ions.
The sulfuric acid content in the chromium plating solution continues to increase
Insufficient rinsing after acid activation
Before using chromium plating additives, workpieces require pretreatment activation. The activation solution typically used in electroplating plants is a 5% to 10% sulfuric acid solution. Due to complex workpiece geometries, improper cleaning procedures, or inadequate rinsing, trace amounts of sulfate ions may be introduced into the chromium plating bath.
About us
Guangdong Bigely Technology Co., Ltd. ,founded in 2003, is a high-tech enterprise integrating R & D，production, sales and service, specializing in theproduction of electroplating additives. As a famous electroplating additives source manufacturer in China, Our products are widely used to meet the plating needs of different industries and exported to many countries from all over the world. They can meet the environmental protection standard after use, mainly used in automobile parts, sanitary ware, electronic products, hardware, furniture, building accessories and other fields.
If you need our high-quality electroplating additives, please contact us. We can provide you samples for test, and also provide a series of services.
