08-22-2018, 06:39 AM
1.Traditional aluminum and aluminum alloy plating
Aluminum and aluminum alloy electrolysis in the electrolyte can form a coating, but the coating binding force is not strong, easy to peel. Therefore, aluminum can be first deposited in the aqueous solution containing zinc oxide compounds and then electroplating, this method is either zinc displacement or deposition. It is also possible to first obtain a thin porous oxide film on the surface of aluminum and aluminum alloys by anodizing the power supply to perform electroplating.
1.1General aluminum and aluminum alloy plating process
Aluminum and aluminum alloy electroplating processes are pre-plated, electroplated and post-plated. Pre-plating treatment is the most critical process related to the quality of electroplated products. Its main purpose is to remove the grease on the surface of aluminum and aluminum alloys, naturally forming an oxide film and other dirt.
Conventional general processes are: degreasing-washing-demineralization-washing-pickling-washing-activation-washing-primary zincation-washing-removal-zinc-washing-secondary zincation-washing-neutral nickel-plating-washing- Subsequent plating.
There is also a wave of the anodized film instead of zinc immersion process in the subsequent plating.
Aluminum and aluminum alloy electrolysis in the electrolyte can form a coating, but the coating binding force is not strong, easy to peel. Therefore, aluminum can be first deposited in the aqueous solution containing zinc oxide compounds and then electroplating, this method is either zinc displacement or deposition. It is also possible to first obtain a thin porous oxide film on the surface of aluminum and aluminum alloys by anodizing the power supply to perform electroplating.
1.1General aluminum and aluminum alloy plating process
Aluminum and aluminum alloy electroplating processes are pre-plated, electroplated and post-plated. Pre-plating treatment is the most critical process related to the quality of electroplated products. Its main purpose is to remove the grease on the surface of aluminum and aluminum alloys, naturally forming an oxide film and other dirt.
Conventional general processes are: degreasing-washing-demineralization-washing-pickling-washing-activation-washing-primary zincation-washing-removal-zinc-washing-secondary zincation-washing-neutral nickel-plating-washing- Subsequent plating.
There is also a wave of the anodized film instead of zinc immersion process in the subsequent plating.