Medal electroplating is a key electroplating process for medal making. The electroplating process is divided into electroplating and electrophoresis. Electroplating includes electrodeposition, electroless deposition, conversion film formation, surface cleaning, flattening, brightening, micro-roughening, etc. Including surface treatment processing operations. Electrophoretic paint film has the advantages of plump, uniform, flat and smooth coating. The hardness, adhesion, corrosion resistance, impact performance and penetration performance of electrophoretic paint film are obviously better than other coating processes. What is the difference between medal plating and electrophoresis?
The electrophoresis process is divided into anodic electrophoresis and cathodic electrophoresis. If the paint particles are negatively charged, the workpiece is the anode, and the paint particles are deposited on the workpiece to form a film under the action of the electric field force, which is called anodic electrophoresis; on the contrary, if the paint particles are positively charged, the workpiece is the cathode, and the paint particles are deposited on the workpiece. cathodic electrophoresis.
Electroplating is the process of using the principle of electrolysis to coat a thin layer of other metals or alloys on the surface of certain metals. Such as rust), improve wear resistance, electrical conductivity, reflectivity, corrosion resistance (copper sulfate, etc.) and enhance aesthetics. The outer layers of many coins are also electroplated.
Third, the difference between the two
There is also a very obvious difference in appearance. The medals painted by electroplating can have bright gold and matte gold in appearance, while the medals painted by electrophoresis will be relatively dark in color. Color is produced by electrophoresis. Electroplating coloring generally attaches a layer of metal film to the surface of the medal, while electrophoretic coloring uses an electric field to directionally migrate the pigment and deposit it on the surface of the medal.
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