150 year old practice of protecting steel from corrosion using molten zinc at a high temperature is called hot dip galvanizing. This method is often referred to as just “galvanizing” as it is a developed form of galvanizing. Zinc is the root element used in this method of galvanizing. Hot dip galvanizing cannot be done without using zinc. Zinc is used in galvanizing, is a healthy metal which is completely recyclable.
Hot-dip galvanizing is the process whereby fabricated steel, fasteners, structural steel, castings, or small parts, including small parts are immersed in a kettle of molten zinc, resulting in a metallurgically bonded alloy coating that protects the steel from corrosion. Generally flat or coil form of steel from the 10 gauge to 28 gauge range, is also protected from corrosion in a slightly different process by hot-dip galvanizing.
Electro-statically applied zinc, Steel coated with zinc-rich paint, and mechanically applied zinc are commonly known as hot dip galvanizing is used incorrectly in the society. All of these methods of applying zinc to steel for corrosion protection are very different from this method, and may be not appropriate for environmental exposures and many situations.
Hot dip galvanizing generally has lower cost in comparison to other commonly used protective coatings for steel. The application cost of labor coatings as painting has risen far more than the cost of factory applied on hot dip galvanizing.
The initial cost of hot dip galvanizing in some cases is higher than alternative coatings. Galvanizing is invariably more cost effective due to lower maintenance costs during a longer service life. Maintenance is even more costly when structures are located in remote areas. Maintenance process has a negative impact on productivity.
The life of hot dip galvanized steel or iron is more than 50 years in most rural environments, and from 10 to 30 years in most corrosive urban and coastal environments. It is 20% more than alternative coatings.
Immersion in acid ensures uniform cleaning of the steel surface, in contrast organic coatings must be applied on scratchy cleaned surfaces and verified by third party inspection. Additionally, the application of unrefined coatings is limited in terms of prevailing environmental temperature and relative humidity which adds to the cost of applying a paint system.
Prashant Galvanizer has an experienced team of skilled worker for manufacturing Hot Dip Galvanizing plants. The Galvanizer who is famous in Gujarat as the Galvanizer Consultant, provide consulting services to the engineering, galvanizing, and manufacturing industries regarding all phases of hot dip galvanizing.