What is Hot Dip Galvanizing
Hot dip galvanizing is a popular variety of galvanizing due to its ability to bond with steel while retaining its non-ferrous properties. Hot dip galvanizing provides excellent protection both internally and externally from corrosion, it self-regulates when weakened, sacrifices itself for the support of the base metal and has a longer life-span of up to 50 years or more without corrosion or mechanical damage. This type of galvanizing is also known as hot dip galvanizing. The galvanizing process consists of heating the steel piece to a specific temperature and then dipping it into an acid solution, which in turn eats away at the surface of the steel. After a while, the surface of the steel develops what is known as pigmentation, which occurs when the steel returns to its original color following the treatment.
This hot dip galvanizing process is achieved using zinc or aluminum. The two most commonly used metals are zinc and aluminum because they can undergo the entire galvanizing process without causing damage. In addition to these two types of metal, hot dip galvanizing can also be achieved using steel, stainless steel, copper and other alloys. This process is also referred to as galvanic electroplating because galvanized steel or pieces of stainless steel or copper are coated with an electroplating coating. Electroplating is a popular method of creating protective coatings for items such as auto body parts, medical implants, household safety devices and more.
Hot dip galvanizing is one of the most effective methods of combating corrosion and rust. Hot dip galvanizing is a simple yet highly effective process that allows manufacturers to build durable and attractive products that are free of corrosion and have a long life span. This process is very effective against heavy duty steel or stainless steel items. When you choose a hot-dip galvanizing process for your project, there are several steps you will want to take to ensure your safety and success including:
Safety - this process must be performed with extreme care and utmost integrity. During the hot dip galvanizing process, a mild galvanizing agent is applied to the steel base metal. You must wear eye protection, gloves and protective clothing when handling the hot dip galvanizing solution. If the solution comes in contact with your skin, you should remove it right away to avoid any skin irritation or burning.
Pickling - this process uses a thin layer of hot dip galvanizing solution applied to the metal during the hot dip galvanizing process. This thin layer of hot dip galvanizing will allow the surface of the object to be etched so that the etching will last a long time. A very effective way to pickle an item is to apply it from the bottom (negative) direction of the pickling. Once the object has been etched, the positive (top) direction of pickling is applied to the object. This process will allow the metal object to be engraved for an indefinite period of time.
Zinc Dioxide - this is the main ingredient used in hot-dip galvanizing. Zinc is a popular material for the zinc coating that is applied to the galvanized steel surface during the hot-dip galvanizing process. It helps the metal object to be protected against corrosion, rust, and corrosion spots caused by water. Zinc acts as a protection for the steel surface during the entire processing of hot dip galvanizing. The zinc coating can also help in providing an extra level of resistance to corrosion.