Function Of Galvanization And Its Operating Principle
Function:
Galvanizing the metal can make it corrosion resistant.
Without protective zinc coating, metal will always be exposed to elements and will be oxidized and corroded faster.
In terms of corrosion prevention, galvanized steel is an economical and effective alternative to austenitic stainless steel, aluminum and other materials.
Operating principle:
First, it forms a protective coating that separates the metal from the surrounding environment. The zinc layer prevents water, moisture and other elements in the air from corroding the steel. If the zinc coating is scratched carelessly, and the scratch is very deep, the metal is exposed and easy to corrode.
Galvanizing can also protect metals by “galvanic corrosion”. When two metals with different electrochemical composition contact with the existing electrolyte, electrical corrosion will occur. According to the atomic structure of two metals, one is the anode and the other is the cathode. The rate of anodic corrosion is faster than its own corrosion, while the rate of cathodic corrosion is slower than its own corrosion. Zinc is used for galvanizing because it acts as an anode when in contact with many different types of metals. Since the zinc coating in contact with the base metal is usually an anode, the corrosivity of the base metal or cathode is slowed down.
drum closures before galvanization
drum closures after galvanization
Short comments: Galvanizing is one of the most widely used methods used to protect metals from corrosion. It applies a thin zinc coating on the thicker base metal, which can make the metal affected by the surrounding environment.
Which Is Better, Cold-rolled Steel Sheet or Galvanized Steel Sheet?July 24, 2023With the rapid development of industrialization, steel, as an important building material, is widely used in various industries. In the steel market, cold-rolled steel and galvanized steel are two com...view
The introduction of drum closureJune 10, 2023Closure Flange will protect drum content with maximum security, free from leakage and contamination.Finished with zinc plated passivation in Chrome 3 and Chrome 6, or coated with epoxy phenolic.NBR, E...view
New Green Joins Hands With The Domestic Top Robot ESTUNJune 30, 2022The notice of the State Council on printing and distributing the carbon peak action plan before 2030 also puts forward the carbon peak action for industry. This promotes green and low-carbon developme...view
Steel Price Rise! How Long Can The Price Rise Last?July 1, 2022After May 1, the domestic steel market continues to maintain the rising trend, period is synchronized upward, period screw break through the early high point (April 17, 3435 yuan), the highest reached...view
Selection Of High-strength Bolt MaterialsJuly 4, 2022The correct selection of fastener materials in fastener manufacturing is an important part because the performance of fasteners is closely related to their materials. Cold heading steel is a steel for...view