step involved in electroplating
Answers
The following describes the steps taken in a typical zinc electroplating process.
Step 1 – Cleaning the Substrate. ...
Step 2 – Activation of the Substrate. ...
Step 3 – Preparation of the Plating Solution. ...
Step 4 – Zinc Electroplating. ...
Step 5 – Rinsing and Drying.
1. Disassembly – Dissembling all of the connected parts ensures there is an even coat of electroplating solution on all of the surface area.
2. Stripping – Removes particles which can blister or flake a plate-layer. In addition, it is also common for objects to arrive at the shop with old metal coatings. These surfaces are removed to work on the metals base layer.
3. Polishing – Refines and evens surfaces in preparation for plating. smoothing and polishing the smallest imperfections make all of the difference.
4.Cleaning – Object is dipped into cleaning solution and electrified. Without a properly cleaned surface, even the most expensive metal coatings will fail to adhere or protect an object from the outside environment.
5. Set-Up – This step requires a power supply which will provide an electric current for the electroplating process. During set-up, a plater will connect the negative electrical lead of the rectifier to the substrate and place the positive lead directly in the plating solution.
6. Plate Bath – While in the plate bath, deposition begins. During this step, the metal atoms on the anode begin to oxidize and dissolve into the electrolyte solution where they adhere to the surface of the cathode. The longer an object is exposed to a current, the thicker the plating will become. This may take anywhere from 5 to 45 minutes depending on desired thickness. In addition, metal polishing can also help to remove any remaining oxidation on an objects surface. Overall, polishing is the line of defense against the most common issues that may occur during the plating process