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• Time of issue:2021-10-21
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(Summary description)　　Ceramic cylinders can be used in engines. If you want to improve the performance of the cylinders, you can use electroplating process to achieve it. It is mainly the process of plating other metals or alloys on the surface of some metals using the principle of electrolysis. Let's look at it together. Look at the knowledge of electroplating.
　　
　　Plating requires an electrolytic device composed of a low-voltage and high-current power supply for the electroplating tank, a plating solution, the parts to be plated (cathode) and an anode. The composition of the electroplating solution depends on the electroplating, but they all contain the main salt that provides metal ions, the complexing agent that forms complexes with the metal ions in the main salt, and also contains buffers that stabilize the acidity of the solution, anode activators and special additives, such as brighteners. , Grain refiner, refining agent, wetting agent, stress remover, mist inhibitor and other electroplating process is that the metal ions in the plating solution are reduced to metal atoms through electrode reaction under the action of an external electric field, and deposited on the cathode The process of metal. Therefore, this is a metal electrodeposition process, including hydroelectricity, electrochemical reaction, electrocrystallization and other stages.
　　
　　In the plating tank containing the plating solution, the plating solution after cleaning and special pretreatment is made of metal plated with a cathode to make the anode, and the anode is connected to the anode and the cathode of the DC power supply respectively. The plating solution is composed of an aqueous solution containing electroplating metal compounds, conductive salts, buffers, pH adjusters, additives, and the like. After power on, the metal ions in the plating solution move to the cathode under the action of the potential difference to form a plating layer. The anode metal forms metal ions in the plating solution to maintain the concentration of plating metal ions. In some cases, such as chromium plating, an insoluble anode made of lead and lead alloys only serves to transfer electrons and conduct current. The concentration of chromium ions in the electrolyte should be maintained by adding chromium compounds to the plating solution regularly. During electroplating, the quality of anode material, the composition of the plating solution, temperature, current density, electrical time, bending strength, precipitation of impurities, power waveform, etc. will affect the quality of electroplating, so it must be controlled in time.
　　
　　 The above is the detailed introduction of electroplating knowledge. The electroplating principle consists of four aspects: electroplating solution, electroplating reaction, electrode and reaction principle, and metal electrodeposition process.