Email Us

Function Of Galvanization And Its Operating Principle


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 galvanizationdrum closures before galvanizationdrum closures after galvanizationdrum 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.

Popular Drum Barrel Fittings

Related Drum Accessories and Fittings News & Blog

  • Discussion On The Second Use Value Of Steel Drums in Yunnan ProvinceDiscussion On The Second Use Value Of Steel Drums in Yunnan ProvinceJuly 1, 2022Varieties, specifications, quantities, uses and trends of steel drums in Yunnan ProvinceThe main varieties of steel drums in Yunnan Province (the standard is called metal drums, the same below) are: 2...view
  • Global Shipping System Under The Impact Of The EpidemicGlobal Shipping System Under The Impact Of The EpidemicJune 30, 2022What has happened to the global shipping system under the impact of the epidemic?1. "Crazy" shipping priceIn the winter of novel corona virus pneumonia, besides the hot vaccine industry, the...view
  • The Evolution of TinplateThe Evolution of TinplateDecember 15, 2023During World War I, the primary concern for wartime rations was their ability to withstand the losses incurred from prolonged transportation and storage. Glass containers, while transparent, could cau...view
  • The Application Of Flex SpoutThe Application Of Flex SpoutJune 30, 20221. The flex spout is applicable to all kinds of oil cans.2. Tear the breakpoint on both sides, pull it up and pull out the oil nozzle3. Rotate the cover as shown in the figure4. The oil nozzle is equi...view
  • UN rating drumsUN rating drumsApril 20, 2023Since 1 January 1991, all dangerous goods in international marine and international or domestic air transport were required to be in packaging displaying the "UN" marking. The mark indicates...view
  • Pre-tightening Force For Fatigue Fracture Of Bolt FastenersPre-tightening Force For Fatigue Fracture Of Bolt FastenersJuly 4, 2022Similar to other metal parts, fastener failures include overload, corrosion-related cracking, embrittlement, creep and fatigue. Due to external loads, fastener overload may occur during installation o...view
No.58 Qinjian Road, Hengshan Industrial Park, Shouchang Town, Jiande City, Zhejiang Province, China