Anodizing: Anodizing is a method to form an oxide film on the surface of a workpiece or product by using the electrolysis principle of direct current and alternating current to increase corrosion resistance and make the appearance beautiful.
Electroplating treatment: Electroplating treatment is a method in which the workpiece is used as the cathode and the material forming the plating layer is used as the anode, and both of them are placed in a bath with electroplating solution, and then DC or AC DC is applied to ionize the material forming the plating layer, and then the material runs from the electroplating solution to the surface of the workpiece and firmly adheres to it to form plating layers with different thicknesses.
Immersion method: firstly, degrease the oil on the clean castings or products, and then rinse with warm water at 25-30℃ for heat preservation. Then put it in a soaking machine for sealing, vacuumize it to 0.7-0.8MPa, keep the temperature at about 65℃, and then inject the prepared wetting agent into the soaking machine. After soaking for 8- 10 hour, dry compressed air is introduced to keep the pressure around 0.4MPa, and then it is kept for 8- 10 hour. Finally, the casting or product is deflated and taken out for air drying.
Surface spraying method: spray paint on cast aluminum parts or aluminum alloy components and products to improve their corrosion resistance. For castings or products requiring good corrosion resistance, aluminum castings or products should be anodized or chemically oxidized before spraying. The purpose is to increase its corrosion resistance, and the second is to make the paint bond more firmly, and then brush the primer and topcoat.
Shot peening method: aluminum alloy castings are loaded into the drum of shot peening machine and sprayed onto the surface of the castings with high-speed elastic flow. Because the casting keeps rotating at the same time, all its surfaces are strengthened by the injection of projectiles.
Vacuum spraying method: the product or profile to be sprayed is put into the vacuum chamber of the spraying machine as the cathode, and the material forming the spraying coating is used as the anode. After the vacuum chamber is closed, the vacuum is pumped to a certain extent, and the spraying material is sputtered and deposited on the product or profile with a high-power plasma gun as a cathode, forming a layer of 2- 10um spraying coating with various bright luster.