Electroplating method

Electroplating can be divided into hanging plating, rolling plating, continuous plating, and brush plating, which are mainly related to the size and batch size of the parts to be plated. Hanging plating is suitable for general size products, such as car bumpers, bicycle handlebars, etc. Roll plating is suitable for small parts, fasteners, washers, pins, etc. Continuous plating is suitable for mass production of wire and strip. Brush plating is suitable for local plating or repair. Electroplating solutions include acidic, alkaline, and acidic and neutral solutions with chromium agents added. Regardless of the plating method used, the plating bath, hanger, etc. in contact with the product to be plated and the plating solution should have a certain degree of universality.
Coating classification
According to the composition of the coating, it can be divided into three categories: single metal coating, alloy coating, and composite coating.
If classified by purpose, it can be divided into:
① Protective coating;
② Protective decorative coating;
③ Decorative coating;
④ Repair coating;
⑤ Functional coating
Single metal electroplating
Single metal electroplating has a history of over 170 years, and there are 33 metals on the periodic table that can be electrodeposited from aqueous solutions. More than 10 commonly used methods include electroplating, nickel, chromium, copper, tin, iron, cobalt, cadmium, lead, gold, silver, etc. The coating formed by simultaneously depositing two or more elements on the cathode is an alloy coating. Alloy coatings have organizational structures and properties that a single metal coating does not possess, such as amorphous Ni-P alloys, various Sn alloys that are not present in the phase diagram, and alloy coatings with special decorative appearances, particularly high corrosion resistance, excellent weldability, and magnetic properties.