Galvanized sheet metal

Galvanized sheet metal,commonly referred to as galvanized sheet,is mainly made by coating a layer of metallic zinc on the surface of steel or iron plates.This galvanized layer is formed on the surface of the steel plate through a series of production processes,with the main purpose of enhancing the corrosion resistance of the steel plate.The following is a detailed introduction to the material of galvanized sheet metal:

Main materials

The main materials of galvanized sheet metal are steel plate(or iron plate)and metallic zinc.Steel plate,as the substrate,provides sufficient strength and hardness,while metallic zinc serves as the coating,mainly playing a role in corrosion prevention.

Production process

The production process mainly includes steps such as raw material preparation,acid washing,cold rolling,hot-dip galvanizing,post-treatment,cooling and straightening,cutting,and packaging.Among them,hot-dip galvanizing is the core process,which determines the thickness and quality of the galvanized layer on the galvanized sheet metal.In this step,the steel plate enters the molten zinc solution and undergoes a chemical reaction between zinc and the steel plate through immersion plating,forming an alloy layer of zinc and steel.

Material classification

Galvanized sheet metals can be classified into various types based on production processes and material characteristics,such as:
1.Alloyed galvanized steel sheet:produced by hot-dip method,with good weldability and adhesion performance.
2.Hot dip galvanized steel plate:A thin steel plate with a thin layer of zinc attached to its surface,produced by continuous galvanizing.
3.Electroplated galvanized steel plate:The steel plate is galvanized by passing electricity,and the zinc coating is relatively thin,resulting in relatively poor corrosion resistance.
4.Single sided galvanized steel plate:Only one side of the steel plate is coated with zinc,which has better adaptability than steel plates coated with double-sided zinc.
5.Double sided galvanized steel plate:In order to overcome some of the disadvantages of single-sided galvanized steel plate,a thin layer of zinc is plated on the other side of the steel plate.
6.Composite galvanized steel plate:In addition to pure steel,the internal material also includes steel plates made of lead,aluminum and other metals composite,and then coated with a layer of zinc on their surface,which has superior rust prevention and coating performance.
In summary,galvanized sheet metal is a composite material coated with a layer of metallic zinc on the surface of steel or iron plates,which has various excellent characteristics and a wide range of application fields.