Essentials for Galvanisation

Before sending your steel for galvanising there are a few essential things that the client needs to keep in mind, to make sure the process is performed safely, efficiently and produce the best possible quality on your end product.

The galvanising process exists out of several steps: after degreasing, pickling and fluxing, the steel materials are submerged in a zinc bath containing a molten zinc-alloy at a temperature of around 447ºC. The zinc that covers the material bonds with the steel, creating an unbreakable layer that protects the steel from corrosion. Galvanised materials are very durable, maintenance-free and they provide unique protection.

To get the most optimised protection, clients need to remove these manufacturing defects before sending their work for galvanising.There are two main methods for galvanizing steel; these are hot-dip galvanizing and cold galvanizing.

Galvanisation or galvanization (or galvanizing as it is most commonly called) is the process of applying a protective zinc coating to iron or steel, to prevent rusting.

The most common method of galvanizing is to hot dip the metal in a bath of molten zinc. Zinc is more reactive metal than iron, hence it reacts with oxygen to form a protective oxide layer, which prevents inner iron from getting in contact with oxygen.

To weld galvanized steel successfully, a skilled welder is required. Furthermore, to solve the coating issue, the zinc coating should be removed from the area where you are welding. A filler material can also be used on the zinc-coated portion of the welding area.