What is electrophoresis?

Electrophoresis is a special coating technology and one of the most commonly used methods for coating metal workpieces.

Electrophoresis process is divided into anode electrophoresis and cathode electrophoresis. If the coating particles are negatively charged and the workpiece is an anode, the coating particles are deposited on the workpiece under the action of electric field force to form a thin film, which is called anodic electrophoresis; Conversely, if the coating particles are positively charged and the workpiece is cathode, the coating particles are deposited on the workpiece to form a thin film, which is called cathodic electrophoresis.

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Under certain conditions, the distance (i.e. mobility) that charged particles move in unit time under the action of unit electric field intensity is constant, which is the physical and chemical characteristic constant of charged particles.

Different charged particles electrophorese in the same electric field because of different charges or different charge-mass ratios, and after a certain period of time, they separate from each other because of different moving distances. The separation distance is proportional to the applied electric field voltage and electrophoresis time.