The ion source of the multi-arc coating machine is based on cold cathode vacuum arc discharge. The cathode target material has spots moving around. The spots emit metal vapor and ionize into ions. The ions are deposited on the surface of the workpiece to form a coating. The working principle of the ion source of the multi-arc coating machine is to generate arc discharge in a vacuum environment through the cathode target material to form a high-density plasma. When the current passes through the target material, tiny spots will form on the surface and move at high speed. These spots will evaporate and ionize the target material to produce metal ions. These ions are accelerated to fly toward the workpiece under the action of the electric field, and finally deposited on the surface to form a uniform and dense coating.
