Metal vanity mirrors require a low-voltage, high-current power supply to the electroplating bath and an electrolytic installation consisting of the electroplating solution, the part to be plated (cathode), and the anode. The composition of cosmetic mirror liquid varies depending on the coating layer, but all contain the main salt that provides metal ions, the complexing agent that can complex the metal ions in the main salt to form a complex, the buffer used to stabilize the pH of the solution, and the anode activator. and special additives.

The process of electroplating metal cosmetic mirror is a process in which the metal ions in the plating solution are restored to metal atoms by the reaction of the electrode under the action of an external electric field, and the metal accumulation is stopped on the cathode. Therefore, this is a metal electro-piling process including liquid-phase mass transfer, electrochemical reaction and electro-crystallization.

In the plating tank with electroplating brand cosmetic mirrors, the cleaned and specially pretreated parts to be plated are used as cathodes, and the anodes are made of plated metal, and the two poles are connected to the negative and positive poles of the DC power supply respectively. The electroplating solution is composed of an aqueous solution containing metal-plating compounds, conductive salts, buffers, pH conditioners, and additives. After electrification, the metal ions in the electroplating solution move to the cathode under the action of the potential difference to form a plating layer. The metal of the anode makes up the metal ions into the electroplating bath to maintain the concentration of the metal ions being plated.

In some cases, such as chrome plating, it is an insoluble anode made of lead and lead-antimony alloy, which only plays the role of transmitting electrons and conducting current. The concentration of chromium ions in the electrolyte needs to be maintained by regularly adding chromium compounds to the plating solution. When electroplating high-end cosmetic mirrors, the quality of anode material, composition of electroplating solution, temperature, current density, energization time, stirring intensity, precipitated impurities, power waveform, etc. will affect the quality of the coating, and it is necessary to stop the control in time.

First of all, the liquid for electroplating cosmetic mirrors has six elements: main salt, additional salt, complexing agent, buffer, anode activator and additives. The principle of electroplating includes four aspects: electroplating solution, electroplating reaction, electrode and reaction principle, and the process of electro-deposition of metal. Electrochemical reaction in the reaction of electroplating metal makeup mirror: the following figure is the electroplating installation diagram, the part to be plated is the cathode, which is connected to the negative pole of the DC power supply, the metal anode is combined with the positive pole of the DC power supply, and both the anode and the cathode are immersed in the plating solution middle.

When a certain potential is applied between the cathode and the anode, the following reaction occurs at the cathode: the metal ion Mn+ diffused from the inside of the plating solution to the interface between the electrode and the plating solution takes n electrons from the cathode and restores it to metal M. On the other hand, at the anode, the complete opposite reaction to that of the cathode occurs, that is, the dissolution of metal M occurs at the anode interface, releasing n electrons to generate metal ions Mn+.