One of the most important types of steel that a person in the manufacturing industry should be aware of is galvanized steel. A simple definition of the phrase galvanization is the process of coating a substance with zinc. In this case the steel is coated with zinc. There are basically two main advantages of galvanization. Both of these benefits revolve around the protection of the delicate metal. The fact that it protects the metal from corrosion is the major advantage of this form of steel. The other advantage of opting for galvanized steel is that the coated zinc acts as a sacrificial anode. This prevents the metal from being scratched from abrasive materials.
There are various methods of galvanization that companies offering steel supplies can opt for or already use. Some of the common methods of galvanization include;
- Hot dip galvanization- this is the most common method of galvanization used in the world today. It involves the dipping of the steel in melted iron, hence the name hot dip galvanizing. It is important to ensure that the steel material is thoroughly cleaned before dipping it in the melted zinc. The major reason as to why most people opt for this method of compressed air pipe fittings online is due to the fact that it tends to form a thick coating of zinc on the material. Once the zinc cools or freezes it forms crystal patterns on the surface which is usually referred to as spangles.
- Electric galvanization- it is also referred to as electro galvanizing. An electrolyte solution comprising of zinc sulfate is created and the steel surface dipped in. The zinc components, then form a coating on the steel surface through electrolytic reactions. The major advantage of this method is that the thickness of the coat can be easily controlled as opposed to the prior method.
- Spraying- molten zinc is sprayed on the steel material. The steel surface should be cleaned thoroughly before this process is done. This can be easily done in the case that the lintel steel has already been put into use. The coating is usually heated so as to allow the zinc to fuse with the steel and form an alloy. The best part about this method is that the coat does not peel when the material is bent.
- Painting- this is among some of the oldest methods of galvanization. Zinc powder is usually used in this method for aluminum compressed air systems. The powder is painted on the surface, thus providing some coating. The main advantage of this method is that the paint can be easily applied in situ.
- Sherardizing- the material being galvanized is usually placed in a vacuum room full of zinc dust. The zinc dust settles on the item and once heated the zinc allow coat is formed. The main advantage of this method is that the zinc coat usually adapts or conforms to the physical properties of the item.
These are some of the common methods of steel galvanization and the buyer or client should choose steel that is galvanized using the method of preference.