An Ideal Alternative to Cadmium Plating-Zinc Electroplating

By Nelnash01    9 / Apr / 2018    In Category Industrial

A process known as zinc electroplating is used to protect metals like iron and steel against the impact of corrosion. This process involves the electrodeposition of a thin coating of zinc metal on the surface of another metal object known as substrate. The coating will create a physical barrier which will prevent rust from reaching the underlying metal surface. Zinc has an ability to fight corrosion and is referred as the corrosion prevention workhorse.

Zinc plating is an alternative for cadmium plating and has recently gained popularity. Cadmium plating also provides maximum protection against corrosion. However, it is a toxic substance which can have a cumulative poisoning effect over a long period of time. While zinc cannot match the anti-corrosion capabilities of cadmium, it is a bio friendly alternative and an ideal solution. Zinc finish process will either use a barrel or a rack system. The barrel plating process is used for smaller parts like fasteners and hardware while the rack zinc system is used for large and fragile parts and it provides for a better-quality finish over the barrel method. Barrel method of plating will provide for a greater labor saving and cost. Zinc electroplating is a method of transferring the zinc on the surface of a part through an electric current and this final coating will protect the part from corrosion. It reduces the requirement of maintenance and increases the longevity of the finished part. There are various benefits of plating which include an ease of application, corrosion resistance, improved adhesion and reduced finishing cost for small parts.

Zinc coating will prevent corrosion of the metal by forming a physical barrier. It serves as a sacrificial coating; hence zinc will corrode instead of the metal substrate it is protecting. The main purpose of zinc coating is to protect the underlying metal from corrosion and to save the cost of maintenance and repair on the same. Additionally, zinc will react with oxygen in the atmosphere and will form zinc oxide which subsequently reacts with water to form zinc hydroxide. This will bond with carbon dioxide and produce a thin layer of zinc carbonate that will provide significant corrosion protection. There are a number of factors which contribute on the longevity of zinc coating. The first and most important factor is the quality of coating which is why it is important to choose a reliable and trustworthy company for the services. Thick coatings can increase the protective capabilities on the product. Further, the surrounding environment also plays a crucial role in the formation of corrosion. How and where the products are to be used will also determine the longevity of the coating. Choose zinc coating to reduce maintenance expenses in the future. is one of the leading metal finishing companies offering services including type I, II & III anodizing, CARC painting, passivation, Swiss machining, cadmium plating, copper plating, gold plating, silver plating, tin plating, zinc electroplating, etc. To know more, visit