1. Roller plating "barrel" plating
Large and small batch parts can be efficiently plated where adequate solution exchange and replacement is essential to meet thickness requirements. The load current density of the workpiece in the cylinder is usually optimized by workpiece contact during rotation.
However, some types of parts are not ideal for most traditional roller plating. For example, in most types of rolling plating, the friction between the workpiece and the piece may be scratched, and dented or worn parts are more vulnerable to damage. On the contrary, some flat workpieces are not ideal in rolling plating due to the adhesion, sticking together sheet workpieces during the process, which results in a lack of coating or uneven coating thickness.
Parts are also more likely to be "nested within each other" during roll plating, depending on the geometry and tolerances of certain parts.
2. Hang plating
Suitable for fine and large workpieces. It can fix the workpiece to the fixed position of the hanger by hanging in the bath. This prevents damage to the workpiece during processing and helps to process a large number of parts that cannot be rolled. And they are easier to rinse and dry stains.
The biggest problem of hanging plating is that the workpiece directly connected to the hanging device will be affected by the potential difference between the electroplating power line and the distribution efficiency.
3. Selective plating
This process applies partial plating to selected areas of the workpiece. The process is accomplished by controlled depth plating, which involves fixing the part in a manner that provides continuous electrical contact and immersing the area to be coated in an plating solution to a defined depth.
Selective plating is ideal for special applications where precious metals require functional plating to achieve performance and cost savings by reducing the surface area required for the sheet.
While this is an effective method for electroplating individual parts and reducing costs, it does require processing and labor expenses for machining the parts. There are also restrictions on part size and geometry that prevent certain parts from being selectively coated.
4. Vibration plating
This method is suitable for small or fragile components. Vibration plating is used for smaller parts with deep inner diameters, count holes, fragile tips/ends, or parts that can be bent by rolling plating. By incorporating a vibrating or pulsating basket that transfers kinetic energy to the load, the component moves in a clockwise fashion to the button contacts at the bottom of the basket. These contacts transmit current to the load of the part and provide a very consistent current intensity throughout the machining process.
Heavy, large area parts and parts that are easily tangled and easily nested together cannot be used in vibrational plating baskets because they will not be able to move in a uniform manner. Conversely, smaller parts without sufficient weight cannot vibrate in the electroplating basket.
5. Jet plating
This plating method is designed for small fine parts, flat parts, parts with holes, parts with convex plates, parts easily nested and difficult geometric shapes that are difficult for vibration plating or conventional rolling plating.
How to put together smaller parts, fragile parts, as well as parts with deep dents, opposite holes and blind holes has long puzzled the world aviation, electronics, connector, IC packaging industry.
Jet plating allows precision products to circulate through the plating head in a manner similar to being adsorbed in a fountain. Plating deposition takes place only in the bottom cone of the plating head (the bottom of the fountain). The workpiece sandwiched in the fountain stream is returned to the plating bed through the deflector plate, a process that takes place under the solution and ensures that no parts are damaged. This method eliminates the problem of parts coupling or nesting together, and the movement of parts within the plating head provides a uniform thickness distribution superior to roll and vibration plating.
6. Brush plating
This method is suitable for local product repair, belongs to the late use of the product of a process, we have a little understanding of it.
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